1// Copyright 2009 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5package x509
6
7import (
8	"bytes"
9	"crypto/dsa"
10	"crypto/ecdsa"
11	"crypto/elliptic"
12	"crypto/rand"
13	"crypto/rsa"
14	_ "crypto/sha256"
15	_ "crypto/sha512"
16	"encoding/base64"
17	"encoding/hex"
18	"encoding/pem"
19	"errors"
20	"fmt"
21	"io/ioutil"
22	"math/big"
23	"net"
24	"net/url"
25	"os/exec"
26	"reflect"
27	"runtime"
28	"strings"
29	"testing"
30	"time"
31
32	"github.com/google/certificate-transparency-go/asn1"
33	"github.com/google/certificate-transparency-go/x509/pkix"
34)
35
36func TestParsePKCS1PrivateKey(t *testing.T) {
37	block, _ := pem.Decode([]byte(pemPrivateKey))
38	priv, err := ParsePKCS1PrivateKey(block.Bytes)
39	if err != nil {
40		t.Errorf("Failed to parse private key: %s", err)
41		return
42	}
43	if priv.PublicKey.N.Cmp(rsaPrivateKey.PublicKey.N) != 0 ||
44		priv.PublicKey.E != rsaPrivateKey.PublicKey.E ||
45		priv.D.Cmp(rsaPrivateKey.D) != 0 ||
46		priv.Primes[0].Cmp(rsaPrivateKey.Primes[0]) != 0 ||
47		priv.Primes[1].Cmp(rsaPrivateKey.Primes[1]) != 0 {
48		t.Errorf("got:%+v want:%+v", priv, rsaPrivateKey)
49	}
50
51	// This private key includes an invalid prime that
52	// rsa.PrivateKey.Validate should reject.
53	data := []byte("0\x16\x02\x00\x02\x02\u007f\x00\x02\x0200\x02\x0200\x02\x02\x00\x01\x02\x02\u007f\x00")
54	if _, err := ParsePKCS1PrivateKey(data); err == nil {
55		t.Errorf("parsing invalid private key did not result in an error")
56	}
57}
58
59func TestParsePKIXPublicKey(t *testing.T) {
60	block, _ := pem.Decode([]byte(pemPublicKey))
61	pub, err := ParsePKIXPublicKey(block.Bytes)
62	if err != nil {
63		t.Errorf("Failed to parse RSA public key: %s", err)
64		return
65	}
66	rsaPub, ok := pub.(*rsa.PublicKey)
67	if !ok {
68		t.Errorf("Value returned from ParsePKIXPublicKey was not an RSA public key")
69		return
70	}
71
72	pubBytes2, err := MarshalPKIXPublicKey(rsaPub)
73	if err != nil {
74		t.Errorf("Failed to marshal RSA public key for the second time: %s", err)
75		return
76	}
77	if !bytes.Equal(pubBytes2, block.Bytes) {
78		t.Errorf("Reserialization of public key didn't match. got %x, want %x", pubBytes2, block.Bytes)
79	}
80}
81
82var pemPublicKey = `-----BEGIN PUBLIC KEY-----
83MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA3VoPN9PKUjKFLMwOge6+
84wnDi8sbETGIx2FKXGgqtAKpzmem53kRGEQg8WeqRmp12wgp74TGpkEXsGae7RS1k
85enJCnma4fii+noGH7R0qKgHvPrI2Bwa9hzsH8tHxpyM3qrXslOmD45EH9SxIDUBJ
86FehNdaPbLP1gFyahKMsdfxFJLUvbUycuZSJ2ZnIgeVxwm4qbSvZInL9Iu4FzuPtg
87fINKcbbovy1qq4KvPIrXzhbY3PWDc6btxCf3SE0JdE1MCPThntB62/bLMSQ7xdDR
88FF53oIpvxe/SCOymfWq/LW849Ytv3Xwod0+wzAP8STXG4HSELS4UedPYeHJJJYcZ
89+QIDAQAB
90-----END PUBLIC KEY-----
91`
92
93var pemPrivateKey = `
94-----BEGIN RSA PRIVATE KEY-----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108-----END RSA PRIVATE KEY-----
109`
110
111var testPrivateKey *rsa.PrivateKey
112
113func init() {
114	block, _ := pem.Decode([]byte(pemPrivateKey))
115
116	var err error
117	if testPrivateKey, err = ParsePKCS1PrivateKey(block.Bytes); err != nil {
118		panic("Failed to parse private key: " + err.Error())
119	}
120}
121
122func bigFromString(s string) *big.Int {
123	ret := new(big.Int)
124	ret.SetString(s, 10)
125	return ret
126}
127
128func fromBase10(base10 string) *big.Int {
129	i := new(big.Int)
130	i.SetString(base10, 10)
131	return i
132}
133
134func bigFromHexString(s string) *big.Int {
135	ret := new(big.Int)
136	ret.SetString(s, 16)
137	return ret
138}
139
140var rsaPrivateKey = &rsa.PrivateKey{
141	PublicKey: rsa.PublicKey{
142		N: bigFromString("124737666279038955318614287965056875799409043964547386061640914307192830334599556034328900586693254156136128122194531292927142396093148164407300419162827624945636708870992355233833321488652786796134504707628792159725681555822420087112284637501705261187690946267527866880072856272532711620639179596808018872997"),
143		E: 65537,
144	},
145	D: bigFromString("69322600686866301945688231018559005300304807960033948687567105312977055197015197977971637657636780793670599180105424702854759606794705928621125408040473426339714144598640466128488132656829419518221592374964225347786430566310906679585739468938549035854760501049443920822523780156843263434219450229353270690889"),
146	Primes: []*big.Int{
147		bigFromString("11405025354575369741595561190164746858706645478381139288033759331174478411254205003127028642766986913445391069745480057674348716675323735886284176682955723"),
148		bigFromString("10937079261204603443118731009201819560867324167189758120988909645641782263430128449826989846631183550578761324239709121189827307416350485191350050332642639"),
149	},
150}
151
152func TestMarshalRSAPrivateKey(t *testing.T) {
153	priv := &rsa.PrivateKey{
154		PublicKey: rsa.PublicKey{
155			N: fromBase10("16346378922382193400538269749936049106320265317511766357599732575277382844051791096569333808598921852351577762718529818072849191122419410612033592401403764925096136759934497687765453905884149505175426053037420486697072448609022753683683718057795566811401938833367954642951433473337066311978821180526439641496973296037000052546108507805269279414789035461158073156772151892452251106173507240488993608650881929629163465099476849643165682709047462010581308719577053905787496296934240246311806555924593059995202856826239801816771116902778517096212527979497399966526283516447337775509777558018145573127308919204297111496233"),
156			E: 3,
157		},
158		D: fromBase10("10897585948254795600358846499957366070880176878341177571733155050184921896034527397712889205732614568234385175145686545381899460748279607074689061600935843283397424506622998458510302603922766336783617368686090042765718290914099334449154829375179958369993407724946186243249568928237086215759259909861748642124071874879861299389874230489928271621259294894142840428407196932444474088857746123104978617098858619445675532587787023228852383149557470077802718705420275739737958953794088728369933811184572620857678792001136676902250566845618813972833750098806496641114644760255910789397593428910198080271317419213080834885003"),
159		Primes: []*big.Int{
160			fromBase10("1025363189502892836833747188838978207017355117492483312747347695538428729137306368764177201532277413433182799108299960196606011786562992097313508180436744488171474690412562218914213688661311117337381958560443"),
161			fromBase10("3467903426626310123395340254094941045497208049900750380025518552334536945536837294961497712862519984786362199788654739924501424784631315081391467293694361474867825728031147665777546570788493758372218019373"),
162			fromBase10("4597024781409332673052708605078359346966325141767460991205742124888960305710298765592730135879076084498363772408626791576005136245060321874472727132746643162385746062759369754202494417496879741537284589047"),
163		},
164	}
165
166	derBytes := MarshalPKCS1PrivateKey(priv)
167
168	priv2, err := ParsePKCS1PrivateKey(derBytes)
169	if err != nil {
170		t.Errorf("error parsing serialized key: %s", err)
171		return
172	}
173	if priv.PublicKey.N.Cmp(priv2.PublicKey.N) != 0 ||
174		priv.PublicKey.E != priv2.PublicKey.E ||
175		priv.D.Cmp(priv2.D) != 0 ||
176		len(priv2.Primes) != 3 ||
177		priv.Primes[0].Cmp(priv2.Primes[0]) != 0 ||
178		priv.Primes[1].Cmp(priv2.Primes[1]) != 0 ||
179		priv.Primes[2].Cmp(priv2.Primes[2]) != 0 {
180		t.Errorf("got:%+v want:%+v", priv, priv2)
181	}
182}
183
184func TestMarshalRSAPublicKey(t *testing.T) {
185	pub := &rsa.PublicKey{
186		N: fromBase10("16346378922382193400538269749936049106320265317511766357599732575277382844051791096569333808598921852351577762718529818072849191122419410612033592401403764925096136759934497687765453905884149505175426053037420486697072448609022753683683718057795566811401938833367954642951433473337066311978821180526439641496973296037000052546108507805269279414789035461158073156772151892452251106173507240488993608650881929629163465099476849643165682709047462010581308719577053905787496296934240246311806555924593059995202856826239801816771116902778517096212527979497399966526283516447337775509777558018145573127308919204297111496233"),
187		E: 3,
188	}
189	derBytes := MarshalPKCS1PublicKey(pub)
190	pub2, err := ParsePKCS1PublicKey(derBytes)
191	if err != nil {
192		t.Errorf("ParsePKCS1PublicKey: %s", err)
193	}
194	if pub.N.Cmp(pub2.N) != 0 || pub.E != pub2.E {
195		t.Errorf("ParsePKCS1PublicKey = %+v, want %+v", pub, pub2)
196	}
197
198	// It's never been documented that asn1.Marshal/Unmarshal on rsa.PublicKey works,
199	// but it does, and we know of code that depends on it.
200	// Lock that in, even though we'd prefer that people use MarshalPKCS1PublicKey and ParsePKCS1PublicKey.
201	derBytes2, err := asn1.Marshal(*pub)
202	if err != nil {
203		t.Errorf("Marshal(rsa.PublicKey): %v", err)
204	} else if !bytes.Equal(derBytes, derBytes2) {
205		t.Errorf("Marshal(rsa.PublicKey) = %x, want %x", derBytes2, derBytes)
206	}
207	pub3 := new(rsa.PublicKey)
208	rest, err := asn1.Unmarshal(derBytes, pub3)
209	if err != nil {
210		t.Errorf("Unmarshal(rsa.PublicKey): %v", err)
211	}
212	if len(rest) != 0 || pub.N.Cmp(pub3.N) != 0 || pub.E != pub3.E {
213		t.Errorf("Unmarshal(rsa.PublicKey) = %+v, %q want %+v, %q", pub, rest, pub2, []byte(nil))
214	}
215
216	publicKeys := []struct {
217		derBytes          []byte
218		expectedErrSubstr string
219	}{
220		{
221			derBytes: []byte{
222				0x30, 6, // SEQUENCE, 6 bytes
223				0x02, 1, // INTEGER, 1 byte
224				17,
225				0x02, 1, // INTEGER, 1 byte
226				3, // 3
227			},
228		}, {
229			derBytes: []byte{
230				0x30, 6, // SEQUENCE
231				0x02, 1, // INTEGER, 1 byte
232				0xff,    // -1
233				0x02, 1, // INTEGER, 1 byte
234				3,
235			},
236			expectedErrSubstr: "zero or negative",
237		}, {
238			derBytes: []byte{
239				0x30, 6, // SEQUENCE
240				0x02, 1, // INTEGER, 1 byte
241				17,
242				0x02, 1, // INTEGER, 1 byte
243				0xff, // -1
244			},
245			expectedErrSubstr: "zero or negative",
246		}, {
247			derBytes: []byte{
248				0x30, 6, // SEQUENCE
249				0x02, 1, // INTEGER, 1 byte
250				17,
251				0x02, 1, // INTEGER, 1 byte
252				3,
253				1,
254			},
255			expectedErrSubstr: "trailing data",
256		}, {
257			derBytes: []byte{
258				0x30, 9, // SEQUENCE
259				0x02, 1, // INTEGER, 1 byte
260				17,
261				0x02, 4, // INTEGER, 4 bytes
262				0x7f, 0xff, 0xff, 0xff,
263			},
264		}, {
265			derBytes: []byte{
266				0x30, 10, // SEQUENCE
267				0x02, 1, // INTEGER, 1 byte
268				17,
269				0x02, 5, // INTEGER, 5 bytes
270				0x00, 0x80, 0x00, 0x00, 0x00,
271			},
272			// On 64-bit systems, encoding/asn1 will accept the
273			// public exponent, but ParsePKCS1PublicKey will return
274			// an error. On 32-bit systems, encoding/asn1 will
275			// return the error. The common substring of both error
276			// is the word “large”.
277			expectedErrSubstr: "large",
278		},
279	}
280
281	for i, test := range publicKeys {
282		shouldFail := len(test.expectedErrSubstr) > 0
283		pub, err := ParsePKCS1PublicKey(test.derBytes)
284		if shouldFail {
285			if err == nil {
286				t.Errorf("#%d: unexpected success, got %#v", i, pub)
287			} else if !strings.Contains(err.Error(), test.expectedErrSubstr) {
288				t.Errorf("#%d: expected error containing %q, got %s", i, test.expectedErrSubstr, err)
289			}
290		} else {
291			if err != nil {
292				t.Errorf("#%d: unexpected failure: %s", i, err)
293				continue
294			}
295			reserialized := MarshalPKCS1PublicKey(pub)
296			if !bytes.Equal(reserialized, test.derBytes) {
297				t.Errorf("#%d: failed to reserialize: got %x, expected %x", i, reserialized, test.derBytes)
298			}
299		}
300	}
301}
302
303type matchHostnamesTest struct {
304	pattern, host string
305	ok            bool
306}
307
308var matchHostnamesTests = []matchHostnamesTest{
309	{"a.b.c", "a.b.c", true},
310	{"a.b.c", "b.b.c", false},
311	{"", "b.b.c", false},
312	{"a.b.c", "", false},
313	{"example.com", "example.com", true},
314	{"example.com", "www.example.com", false},
315	{"*.example.com", "example.com", false},
316	{"*.example.com", "www.example.com", true},
317	{"*.example.com", "www.example.com.", true},
318	{"*.example.com", "xyz.www.example.com", false},
319	{"*.*.example.com", "xyz.www.example.com", false},
320	{"*.www.*.com", "xyz.www.example.com", false},
321	{"*bar.example.com", "foobar.example.com", false},
322	{"f*.example.com", "foobar.example.com", false},
323	{"", ".", false},
324	{".", "", false},
325	{".", ".", false},
326	{"example.com", "example.com.", true},
327	{"example.com.", "example.com", true},
328	{"example.com.", "example.com.", true},
329	{"*.com.", "example.com.", true},
330	{"*.com.", "example.com", true},
331	{"*.com", "example.com", true},
332	{"*.com", "example.com.", true},
333}
334
335func TestMatchHostnames(t *testing.T) {
336	for i, test := range matchHostnamesTests {
337		r := matchHostnames(test.pattern, test.host)
338		if r != test.ok {
339			t.Errorf("#%d mismatch got: %t want: %t when matching '%s' against '%s'", i, r, test.ok, test.host, test.pattern)
340		}
341	}
342}
343
344func TestMatchIP(t *testing.T) {
345	// Check that pattern matching is working.
346	c := &Certificate{
347		DNSNames: []string{"*.foo.bar.baz"},
348		Subject: pkix.Name{
349			CommonName: "*.foo.bar.baz",
350		},
351	}
352	err := c.VerifyHostname("quux.foo.bar.baz")
353	if err != nil {
354		t.Fatalf("VerifyHostname(quux.foo.bar.baz): %v", err)
355	}
356
357	// But check that if we change it to be matching against an IP address,
358	// it is rejected.
359	c = &Certificate{
360		DNSNames: []string{"*.2.3.4"},
361		Subject: pkix.Name{
362			CommonName: "*.2.3.4",
363		},
364	}
365	err = c.VerifyHostname("1.2.3.4")
366	if err == nil {
367		t.Fatalf("VerifyHostname(1.2.3.4) should have failed, did not")
368	}
369
370	c = &Certificate{
371		IPAddresses: []net.IP{net.ParseIP("127.0.0.1"), net.ParseIP("::1")},
372	}
373	err = c.VerifyHostname("127.0.0.1")
374	if err != nil {
375		t.Fatalf("VerifyHostname(127.0.0.1): %v", err)
376	}
377	err = c.VerifyHostname("::1")
378	if err != nil {
379		t.Fatalf("VerifyHostname(::1): %v", err)
380	}
381	err = c.VerifyHostname("[::1]")
382	if err != nil {
383		t.Fatalf("VerifyHostname([::1]): %v", err)
384	}
385}
386
387func TestCertificateParse(t *testing.T) {
388	s, _ := hex.DecodeString(certBytes)
389	certs, err := ParseCertificates(s)
390	if IsFatal(err) {
391		t.Error(err)
392	}
393	if len(certs) != 2 {
394		t.Errorf("Wrong number of certs: got %d want 2", len(certs))
395		return
396	}
397
398	err = certs[0].CheckSignatureFrom(certs[1])
399	if err != nil {
400		t.Error(err)
401	}
402
403	if err := certs[0].VerifyHostname("mail.google.com"); err != nil {
404		t.Error(err)
405	}
406
407	const expectedExtensions = 4
408	if n := len(certs[0].Extensions); n != expectedExtensions {
409		t.Errorf("want %d extensions, got %d", expectedExtensions, n)
410	}
411}
412
413func TestMismatchedSignatureAlgorithm(t *testing.T) {
414	der, _ := pem.Decode([]byte(rsaPSSSelfSignedPEM))
415	if der == nil {
416		t.Fatal("Failed to find PEM block")
417	}
418
419	cert, err := ParseCertificate(der.Bytes)
420	if err != nil {
421		t.Fatal(err)
422	}
423
424	if err = cert.CheckSignature(ECDSAWithSHA256, nil, nil); err == nil {
425		t.Fatal("CheckSignature unexpectedly return no error")
426	}
427
428	const expectedSubstring = " but have public key of type "
429	if !strings.Contains(err.Error(), expectedSubstring) {
430		t.Errorf("Expected error containing %q, but got %q", expectedSubstring, err)
431	}
432}
433
434var certBytes = "308203223082028ba00302010202106edf0d9499fd4533dd1297fc42a93be1300d06092a864886" +
435	"f70d0101050500304c310b3009060355040613025a4131253023060355040a131c546861777465" +
436	"20436f6e73756c74696e67202850747929204c74642e311630140603550403130d546861777465" +
437	"20534743204341301e170d3039303332353136343932395a170d3130303332353136343932395a" +
438	"3069310b3009060355040613025553311330110603550408130a43616c69666f726e6961311630" +
439	"140603550407130d4d6f756e7461696e205669657731133011060355040a130a476f6f676c6520" +
440	"496e63311830160603550403130f6d61696c2e676f6f676c652e636f6d30819f300d06092a8648" +
441	"86f70d010101050003818d0030818902818100c5d6f892fccaf5614b064149e80a2c9581a218ef" +
442	"41ec35bd7a58125ae76f9ea54ddc893abbeb029f6b73616bf0ffd868791fba7af9c4aebf3706ba" +
443	"3eeaeed27435b4ddcfb157c05f351d66aa87fee0de072d66d773affbd36ab78bef090e0cc861a9" +
444	"03ac90dd98b51c9c41566c017f0beec3bff391051ffba0f5cc6850ad2a590203010001a381e730" +
445	"81e430280603551d250421301f06082b0601050507030106082b06010505070302060960864801" +
446	"86f842040130360603551d1f042f302d302ba029a0278625687474703a2f2f63726c2e74686177" +
447	"74652e636f6d2f54686177746553474343412e63726c307206082b060105050701010466306430" +
448	"2206082b060105050730018616687474703a2f2f6f6373702e7468617774652e636f6d303e0608" +
449	"2b060105050730028632687474703a2f2f7777772e7468617774652e636f6d2f7265706f736974" +
450	"6f72792f5468617774655f5347435f43412e637274300c0603551d130101ff04023000300d0609" +
451	"2a864886f70d01010505000381810062f1f3050ebc105e497c7aedf87e24d2f4a986bb3b837bd1" +
452	"9b91ebcad98b065992f6bd2b49b7d6d3cb2e427a99d606c7b1d46352527fac39e6a8b6726de5bf" +
453	"70212a52cba07634a5e332011bd1868e78eb5e3c93cf03072276786f207494feaa0ed9d53b2110" +
454	"a76571f90209cdae884385c882587030ee15f33d761e2e45a6bc308203233082028ca003020102" +
455	"020430000002300d06092a864886f70d0101050500305f310b3009060355040613025553311730" +
456	"15060355040a130e566572695369676e2c20496e632e31373035060355040b132e436c61737320" +
457	"33205075626c6963205072696d6172792043657274696669636174696f6e20417574686f726974" +
458	"79301e170d3034303531333030303030305a170d3134303531323233353935395a304c310b3009" +
459	"060355040613025a4131253023060355040a131c54686177746520436f6e73756c74696e672028" +
460	"50747929204c74642e311630140603550403130d5468617774652053474320434130819f300d06" +
461	"092a864886f70d010101050003818d0030818902818100d4d367d08d157faecd31fe7d1d91a13f" +
462	"0b713cacccc864fb63fc324b0794bd6f80ba2fe10493c033fc093323e90b742b71c403c6d2cde2" +
463	"2ff50963cdff48a500bfe0e7f388b72d32de9836e60aad007bc4644a3b847503f270927d0e62f5" +
464	"21ab693684317590f8bfc76c881b06957cc9e5a8de75a12c7a68dfd5ca1c875860190203010001" +
465	"a381fe3081fb30120603551d130101ff040830060101ff020100300b0603551d0f040403020106" +
466	"301106096086480186f842010104040302010630280603551d110421301fa41d301b3119301706" +
467	"035504031310507269766174654c6162656c332d313530310603551d1f042a30283026a024a022" +
468	"8620687474703a2f2f63726c2e766572697369676e2e636f6d2f706361332e63726c303206082b" +
469	"0601050507010104263024302206082b060105050730018616687474703a2f2f6f6373702e7468" +
470	"617774652e636f6d30340603551d25042d302b06082b0601050507030106082b06010505070302" +
471	"06096086480186f8420401060a6086480186f845010801300d06092a864886f70d010105050003" +
472	"81810055ac63eadea1ddd2905f9f0bce76be13518f93d9052bc81b774bad6950a1eededcfddb07" +
473	"e9e83994dcab72792f06bfab8170c4a8edea5334edef1e53d906c7562bd15cf4d18a8eb42bb137" +
474	"9048084225c53e8acb7feb6f04d16dc574a2f7a27c7b603c77cd0ece48027f012fb69b37e02a2a" +
475	"36dcd585d6ace53f546f961e05af"
476
477var certWithSCTListPEM = `
478-----BEGIN CERTIFICATE-----
479MIIHkzCCBnugAwIBAgIUHz6ZOwEjk6zhU9v3n2Jo3qeucqYwDQYJKoZIhvcNAQEL
480BQAwSTELMAkGA1UEBhMCQk0xGTAXBgNVBAoTEFF1b1ZhZGlzIExpbWl0ZWQxHzAd
481BgNVBAMTFlF1b1ZhZGlzIEVWIFNTTCBJQ0EgRzEwHhcNMTcwMjA4MTQxNTU3WhcN
482MTgwMjA4MTQyNTAwWjCByzETMBEGCysGAQQBgjc8AgEDEwJHQjEYMBYGA1UEDwwP
483QnVzaW5lc3MgRW50aXR5MREwDwYDVQQFEwhTQzA5NTAwMDELMAkGA1UEBhMCR0Ix
484EjAQBgNVBAgMCUVkaW5idXJnaDESMBAGA1UEBwwJRWRpbmJ1cmdoMSEwHwYDVQQK
485DBhMbG95ZHMgQmFua2luZyBHcm91cCBQTEMxEjAQBgNVBAsMCUdST1VQIElUMjEb
486MBkGA1UEAwwSd3d3Lmxsb3lkc2JhbmsuY29tMIIBIjANBgkqhkiG9w0BAQEFAAOC
487AQ8AMIIBCgKCAQEAyRkzN3UmnYbuIW7V4P5qyF/3iCdJwaw/avb0tpOJTa/svtM2
4889KxtVtgwqAPCSuWgjHh6lx+OzXBOh0cM1+gOvjscIJ7k6J0UKouhxrZ02G6CHiNS
4890P3ztsW1CVYAnEQqnhC+hBSl+Ut7DdcsReOUaUrIbO8T0psfsBnez6VtcLB74Hi0
490y6s2AOwPKG7zRjMcMEylOYyGMrUI4ooGsf7IBzMOdMZpkAMUEe6KZ/8AssZOH7F9
491OacCBcGHwN3qp/AG02+tXGaS9DWCS9/seMWqyhE8YPk+iGV3sFZEueBMxixVObFZ
4920Ezwv3cCel6v2mlA5OweteDI57VG4/7OI45CawIDAQABo4ID7jCCA+owdwYIKwYB
493BQUHAQEEazBpMDgGCCsGAQUFBzAChixodHRwOi8vdHJ1c3QucXVvdmFkaXNnbG9i
494YWwuY29tL3F2ZXZzc2wxLmNydDAtBggrBgEFBQcwAYYhaHR0cDovL2V2Lm9jc3Au
495cXVvdmFkaXNnbG9iYWwuY29tMB0GA1UdDgQWBBSIASoK0Cmqs5B06CJUUzq5nQ6c
496IDAMBgNVHRMBAf8EAjAAMB8GA1UdIwQYMBaAFFVYhs66fHZOmROpD9Nsn8L10zzj
497MFEGA1UdIARKMEgwRgYMKwYBBAG+WAACZAECMDYwNAYIKwYBBQUHAgEWKGh0dHA6
498Ly93d3cucXVvdmFkaXNnbG9iYWwuY29tL3JlcG9zaXRvcnkwOwYDVR0fBDQwMjAw
499oC6gLIYqaHR0cDovL2NybC5xdW92YWRpc2dsb2JhbC5jb20vcXZldnNzbDEuY3Js
500MA4GA1UdDwEB/wQEAwIFoDAdBgNVHSUEFjAUBggrBgEFBQcDAgYIKwYBBQUHAwEw
501gd8GA1UdEQSB1zCB1IISd3d3Lmxsb3lkc2JhbmsuY29tghRzdGF0aWMuaGFsaWZh
502eC5jby51a4IUd3d3Lmxsb3lkc2JhbmsuY28udWuCFGltYWdlcy5oYWxpZmF4LmNv
503LnVrghh3d3cuYmFua29mc2NvdGxhbmQuY28udWuCD3d3dy5oYWxpZmF4LmNvbYIT
504d3d3Lmxsb3lkc3RzYi5jby51a4IRd3d3Lmxsb3lkc3RzYi5jb22CEXd3dy5oYWxp
505ZmF4LmNvLnVrghZ3d3cuYmFua29mc2NvdGxhbmQuY29tMIIBfgYKKwYBBAHWeQIE
506AgSCAW4EggFqAWgAdgC72d+8H4pxtZOUI5eqkntHOFeVCqtS6BqQlmQ2jh7RhQAA
507AVoeHdwIAAAEAwBHMEUCIQD3fh/6Cp3I44poKfhA7IkhjInvl8qC9JkooycB7NfE
508lgIgMihc8F0Ap1gIU7WUCxWgV0nUxeWp34mp+g0IPnNJ1KcAdgCkuQmQtBhYFIe7
509E6LMZ3AKPDWYBPkb37jjd80OyA3cEAAAAVoeHdwaAAAEAwBHMEUCIA45u9pfeirN
510Hn8K0xHDCUfCihQSFJo0YYmFxYEgO8GEAiEAwDXdmIkkv3lJ1td+RjTzXMBIjp9R
5113Ii1GumOGKe8IqcAdgBWFAaaL9fC7NP14b1Esj7HRna5vJkRXMDvlJhV1onQ3QAA
512AVoeHdxAAAAEAwBHMEUCIEfe5grRiTvaHZJ4e4glbGftZ87n1pQf2lVeyBMUq0Xa
513AiEA/+W+qCcVd3hHVaYJryO67SYCbUBinU5/6je8eDLOEM4wDQYJKoZIhvcNAQEL
514BQADggEBADGdRf8XpQRPzxv+NeUr5i4q49JI8M/umbwSEXkHJmaDD4CDiUGkFUNR
515Tte0HDRvjbu5y9xub09MgdMl84qvfjsph54rUVK7LWVphi6CC21XbRP5gEwKBeA2
516wAZU1IhhWBy6DaW4CjpTu1Ji3FJqHqKklFrZTMSS+xoqfYbbN96q1mJHQhyDdRlC
517JvNuS1lDM0u3+g/MHNpQM1aGZVKtwpzRABIYhydSJrO14TzWJjbKm1UTnKiwvHbt
518p1ATnYNDZKj3Ec8EASXGTHHoorX0jZpMiNxHv4p4BUinsNFttkhudMGbCfbjjqef
519UfUJESblkeQVpcnndMfnsHSahCVd96k=
520-----END CERTIFICATE-----
521`
522
523// The cert above contains the following SCTs, each of which is a TLS-encoded
524// SignedCertificateTimestamp structure from RFC6962 s3.2.
525/*
526   struct {
527       Version sct_version;
528       LogID id;
529       uint64 timestamp;
530       CtExtensions extensions;
531       digitally-signed struct {
532           Version sct_version;
533           SignatureType signature_type = certificate_timestamp;
534           uint64 timestamp;
535           LogEntryType entry_type;
536           select(entry_type) {
537               case x509_entry: ASN.1Cert;
538               case precert_entry: PreCert;
539           } signed_entry;
540          CtExtensions extensions;
541       };
542   } SignedCertificateTimestamp;
543*/
544
545var wantSCTs = []string{
546	("00" + // Version: v1(0)
547		"bbd9dfbc1f8a71b593942397aa927b473857950aab52e81a909664368e1ed185" + // LogID: Google Skydiver
548		"0000015a1e1ddc08" + // Timestamp
549		"0000" + // No Extensions
550		("04" + "03" + // SHA-256, ECDSA
551			("0047" +
552				"3045022100f77e1ffa0a9dc8e38a6829f840ec89218c89ef97ca82f49928a32701ecd7c496022032285cf05d00a7580853b5940b15a05749d4c5e5a9df89a9fa0d083e7349d4a7"))),
553
554	("00" + // Version: v1(0)
555		"a4b90990b418581487bb13a2cc67700a3c359804f91bdfb8e377cd0ec80ddc10" + // LogID: Google Pilot
556		"0000015a1e1ddc1a" +
557		"0000" + // No Extensions
558		("04" + "03" + // SHA-256, ECDSA
559			("0047" +
560				"304502200e39bbda5f7a2acd1e7f0ad311c30947c28a1412149a34618985c581203bc184022100c035dd988924bf7949d6d77e4634f35cc0488e9f51dc88b51ae98e18a7bc22a7"))),
561	("00" + // Version: v1(0)
562		"5614069a2fd7c2ecd3f5e1bd44b23ec74676b9bc99115cc0ef949855d689d0dd" + // LogID: Digicert Log Server
563		"0000015a1e1ddc40" + // Timestamp
564		"0000" + // No Extensions
565		("04" + "03" + // SHA-256, ECDSA
566			("0047" +
567				"3045022047dee60ad1893bda1d92787b88256c67ed67cee7d6941fda555ec81314ab45da022100ffe5bea8271577784755a609af23baed26026d40629d4e7fea37bc7832ce10ce"))),
568}
569
570func TestParseCertificateSCTs(t *testing.T) {
571	pemBlock, _ := pem.Decode([]byte(certWithSCTListPEM))
572	cert, err := ParseCertificate(pemBlock.Bytes)
573	if err != nil {
574		t.Fatalf("ParseCertificate()=_,%v; want _, nil", err)
575	}
576	if len(cert.RawSCT) == 0 {
577		t.Errorf("len(cert.RawSCT)=0, want >0")
578	}
579	for i, got := range cert.SCTList.SCTList {
580		want, _ := hex.DecodeString(wantSCTs[i])
581		if !bytes.Equal(got.Val, want) {
582			t.Errorf("SCT[%d]=%x; want %x", i, got.Val, want)
583		}
584	}
585}
586
587func parseCIDR(s string) *net.IPNet {
588	_, net, err := net.ParseCIDR(s)
589	if err != nil {
590		panic(err)
591	}
592	return net
593}
594
595func parseURI(s string) *url.URL {
596	uri, err := url.Parse(s)
597	if err != nil {
598		panic(err)
599	}
600	return uri
601}
602
603func TestCreateSelfSignedCertificate(t *testing.T) {
604	random := rand.Reader
605
606	ecdsaPriv, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
607	if err != nil {
608		t.Fatalf("Failed to generate ECDSA key: %s", err)
609	}
610
611	tests := []struct {
612		name      string
613		pub, priv interface{}
614		checkSig  bool
615		sigAlgo   SignatureAlgorithm
616	}{
617		{"RSA/RSA", &testPrivateKey.PublicKey, testPrivateKey, true, SHA1WithRSA},
618		{"RSA/ECDSA", &testPrivateKey.PublicKey, ecdsaPriv, false, ECDSAWithSHA384},
619		{"ECDSA/RSA", &ecdsaPriv.PublicKey, testPrivateKey, false, SHA256WithRSA},
620		{"ECDSA/ECDSA", &ecdsaPriv.PublicKey, ecdsaPriv, true, ECDSAWithSHA1},
621		{"RSAPSS/RSAPSS", &testPrivateKey.PublicKey, testPrivateKey, true, SHA256WithRSAPSS},
622		{"ECDSA/RSAPSS", &ecdsaPriv.PublicKey, testPrivateKey, false, SHA256WithRSAPSS},
623		{"RSAPSS/ECDSA", &testPrivateKey.PublicKey, ecdsaPriv, false, ECDSAWithSHA384},
624	}
625
626	testExtKeyUsage := []ExtKeyUsage{ExtKeyUsageClientAuth, ExtKeyUsageServerAuth}
627	testUnknownExtKeyUsage := []asn1.ObjectIdentifier{[]int{1, 2, 3}, []int{2, 59, 1}}
628	extraExtensionData := []byte("extra extension")
629
630	for _, test := range tests {
631		commonName := "test.example.com"
632		template := Certificate{
633			// SerialNumber is negative to ensure that negative
634			// values are parsed. This is due to the prevalence of
635			// buggy code that produces certificates with negative
636			// serial numbers.
637			SerialNumber: big.NewInt(-1),
638			Subject: pkix.Name{
639				CommonName:   commonName,
640				Organization: []string{"Σ Acme Co"},
641				Country:      []string{"US"},
642				ExtraNames: []pkix.AttributeTypeAndValue{
643					{
644						Type:  []int{2, 5, 4, 42},
645						Value: "Gopher",
646					},
647					// This should override the Country, above.
648					{
649						Type:  []int{2, 5, 4, 6},
650						Value: "NL",
651					},
652				},
653			},
654			NotBefore: time.Unix(1000, 0),
655			NotAfter:  time.Unix(100000, 0),
656
657			SignatureAlgorithm: test.sigAlgo,
658
659			SubjectKeyId: []byte{1, 2, 3, 4},
660			KeyUsage:     KeyUsageCertSign,
661
662			ExtKeyUsage:        testExtKeyUsage,
663			UnknownExtKeyUsage: testUnknownExtKeyUsage,
664
665			BasicConstraintsValid: true,
666			IsCA: true,
667
668			OCSPServer:            []string{"http://ocsp.example.com"},
669			IssuingCertificateURL: []string{"http://crt.example.com/ca1.crt"},
670
671			DNSNames:       []string{"test.example.com"},
672			EmailAddresses: []string{"gopher@golang.org"},
673			IPAddresses:    []net.IP{net.IPv4(127, 0, 0, 1).To4(), net.ParseIP("2001:4860:0:2001::68")},
674			URIs:           []*url.URL{parseURI("https://foo.com/wibble#foo")},
675
676			PolicyIdentifiers:       []asn1.ObjectIdentifier{[]int{1, 2, 3}},
677			PermittedDNSDomains:     []string{".example.com", "example.com"},
678			ExcludedDNSDomains:      []string{"bar.example.com"},
679			PermittedIPRanges:       []*net.IPNet{parseCIDR("192.168.1.1/16"), parseCIDR("1.2.3.4/8")},
680			ExcludedIPRanges:        []*net.IPNet{parseCIDR("2001:db8::/48")},
681			PermittedEmailAddresses: []string{"foo@example.com"},
682			ExcludedEmailAddresses:  []string{".example.com", "example.com"},
683			PermittedURIDomains:     []string{".bar.com", "bar.com"},
684			ExcludedURIDomains:      []string{".bar2.com", "bar2.com"},
685
686			CRLDistributionPoints: []string{"http://crl1.example.com/ca1.crl", "http://crl2.example.com/ca1.crl"},
687
688			RawSCT: []byte{0xde, 0xad}, // Ignored because SCTList provided.
689			SCTList: SignedCertificateTimestampList{
690				SCTList: []SerializedSCT{
691					{Val: []byte{0x01, 0x02, 0x03}},
692					{Val: []byte{0x04, 0x05, 0x06}},
693				},
694			},
695
696			ExtraExtensions: []pkix.Extension{
697				{
698					Id:    []int{1, 2, 3, 4},
699					Value: extraExtensionData,
700				},
701				// This extension should override the SubjectKeyId, above.
702				{
703					Id:       OIDExtensionSubjectKeyId,
704					Critical: false,
705					Value:    []byte{0x04, 0x04, 4, 3, 2, 1},
706				},
707			},
708		}
709
710		derBytes, err := CreateCertificate(random, &template, &template, test.pub, test.priv)
711		if err != nil {
712			t.Errorf("%s: failed to create certificate: %s", test.name, err)
713			continue
714		}
715
716		cert, err := ParseCertificate(derBytes)
717		if err != nil {
718			t.Errorf("%s: failed to parse certificate: %s", test.name, err)
719			continue
720		}
721
722		if len(cert.PolicyIdentifiers) != 1 || !cert.PolicyIdentifiers[0].Equal(template.PolicyIdentifiers[0]) {
723			t.Errorf("%s: failed to parse policy identifiers: got:%#v want:%#v", test.name, cert.PolicyIdentifiers, template.PolicyIdentifiers)
724		}
725
726		if len(cert.PermittedDNSDomains) != 2 || cert.PermittedDNSDomains[0] != ".example.com" || cert.PermittedDNSDomains[1] != "example.com" {
727			t.Errorf("%s: failed to parse name constraints: %#v", test.name, cert.PermittedDNSDomains)
728		}
729
730		if len(cert.ExcludedDNSDomains) != 1 || cert.ExcludedDNSDomains[0] != "bar.example.com" {
731			t.Errorf("%s: failed to parse name constraint exclusions: %#v", test.name, cert.ExcludedDNSDomains)
732		}
733
734		if len(cert.PermittedIPRanges) != 2 || cert.PermittedIPRanges[0].String() != "192.168.0.0/16" || cert.PermittedIPRanges[1].String() != "1.0.0.0/8" {
735			t.Errorf("%s: failed to parse IP constraints: %#v", test.name, cert.PermittedIPRanges)
736		}
737
738		if len(cert.ExcludedIPRanges) != 1 || cert.ExcludedIPRanges[0].String() != "2001:db8::/48" {
739			t.Errorf("%s: failed to parse IP constraint exclusions: %#v", test.name, cert.ExcludedIPRanges)
740		}
741
742		if len(cert.PermittedEmailAddresses) != 1 || cert.PermittedEmailAddresses[0] != "foo@example.com" {
743			t.Errorf("%s: failed to parse permitted email addreses: %#v", test.name, cert.PermittedEmailAddresses)
744		}
745
746		if len(cert.ExcludedEmailAddresses) != 2 || cert.ExcludedEmailAddresses[0] != ".example.com" || cert.ExcludedEmailAddresses[1] != "example.com" {
747			t.Errorf("%s: failed to parse excluded email addreses: %#v", test.name, cert.ExcludedEmailAddresses)
748		}
749
750		if len(cert.PermittedURIDomains) != 2 || cert.PermittedURIDomains[0] != ".bar.com" || cert.PermittedURIDomains[1] != "bar.com" {
751			t.Errorf("%s: failed to parse permitted URIs: %#v", test.name, cert.PermittedURIDomains)
752		}
753
754		if len(cert.ExcludedURIDomains) != 2 || cert.ExcludedURIDomains[0] != ".bar2.com" || cert.ExcludedURIDomains[1] != "bar2.com" {
755			t.Errorf("%s: failed to parse excluded URIs: %#v", test.name, cert.ExcludedURIDomains)
756		}
757
758		if cert.Subject.CommonName != commonName {
759			t.Errorf("%s: subject wasn't correctly copied from the template. Got %s, want %s", test.name, cert.Subject.CommonName, commonName)
760		}
761
762		if len(cert.Subject.Country) != 1 || cert.Subject.Country[0] != "NL" {
763			t.Errorf("%s: ExtraNames didn't override Country", test.name)
764		}
765
766		for _, ext := range cert.Extensions {
767			if ext.Id.Equal(OIDExtensionSubjectAltName) {
768				if ext.Critical {
769					t.Fatal("SAN extension is marked critical")
770				}
771			}
772		}
773
774		found := false
775		for _, atv := range cert.Subject.Names {
776			if atv.Type.Equal([]int{2, 5, 4, 42}) {
777				found = true
778				break
779			}
780		}
781		if !found {
782			t.Errorf("%s: Names didn't contain oid 2.5.4.42 from ExtraNames", test.name)
783		}
784
785		if cert.Issuer.CommonName != commonName {
786			t.Errorf("%s: issuer wasn't correctly copied from the template. Got %s, want %s", test.name, cert.Issuer.CommonName, commonName)
787		}
788
789		if cert.SignatureAlgorithm != test.sigAlgo {
790			t.Errorf("%s: SignatureAlgorithm wasn't copied from template. Got %v, want %v", test.name, cert.SignatureAlgorithm, test.sigAlgo)
791		}
792
793		if !reflect.DeepEqual(cert.ExtKeyUsage, testExtKeyUsage) {
794			t.Errorf("%s: extkeyusage wasn't correctly copied from the template. Got %v, want %v", test.name, cert.ExtKeyUsage, testExtKeyUsage)
795		}
796
797		if !reflect.DeepEqual(cert.UnknownExtKeyUsage, testUnknownExtKeyUsage) {
798			t.Errorf("%s: unknown extkeyusage wasn't correctly copied from the template. Got %v, want %v", test.name, cert.UnknownExtKeyUsage, testUnknownExtKeyUsage)
799		}
800
801		if !reflect.DeepEqual(cert.OCSPServer, template.OCSPServer) {
802			t.Errorf("%s: OCSP servers differ from template. Got %v, want %v", test.name, cert.OCSPServer, template.OCSPServer)
803		}
804
805		if !reflect.DeepEqual(cert.IssuingCertificateURL, template.IssuingCertificateURL) {
806			t.Errorf("%s: Issuing certificate URLs differ from template. Got %v, want %v", test.name, cert.IssuingCertificateURL, template.IssuingCertificateURL)
807		}
808
809		if !reflect.DeepEqual(cert.DNSNames, template.DNSNames) {
810			t.Errorf("%s: SAN DNS names differ from template. Got %v, want %v", test.name, cert.DNSNames, template.DNSNames)
811		}
812
813		if !reflect.DeepEqual(cert.EmailAddresses, template.EmailAddresses) {
814			t.Errorf("%s: SAN emails differ from template. Got %v, want %v", test.name, cert.EmailAddresses, template.EmailAddresses)
815		}
816
817		if len(cert.URIs) != 1 || cert.URIs[0].String() != "https://foo.com/wibble#foo" {
818			t.Errorf("%s: URIs differ from template. Got %v, want %v", test.name, cert.URIs, template.URIs)
819		}
820
821		if !reflect.DeepEqual(cert.IPAddresses, template.IPAddresses) {
822			t.Errorf("%s: SAN IPs differ from template. Got %v, want %v", test.name, cert.IPAddresses, template.IPAddresses)
823		}
824
825		if !reflect.DeepEqual(cert.CRLDistributionPoints, template.CRLDistributionPoints) {
826			t.Errorf("%s: CRL distribution points differ from template. Got %v, want %v", test.name, cert.CRLDistributionPoints, template.CRLDistributionPoints)
827		}
828
829		if !reflect.DeepEqual(cert.SCTList, template.SCTList) {
830			t.Errorf("%s: SCTList differs from template. Got %v, want %v", test.name, cert.SCTList, template.SCTList)
831		}
832
833		if !bytes.Equal(cert.SubjectKeyId, []byte{4, 3, 2, 1}) {
834			t.Errorf("%s: ExtraExtensions didn't override SubjectKeyId", test.name)
835		}
836
837		if !bytes.Contains(derBytes, extraExtensionData) {
838			t.Errorf("%s: didn't find extra extension in DER output", test.name)
839		}
840
841		if test.checkSig {
842			err = cert.CheckSignatureFrom(cert)
843			if err != nil {
844				t.Errorf("%s: signature verification failed: %s", test.name, err)
845			}
846		}
847	}
848}
849
850// Self-signed certificate using ECDSA with SHA1 & secp256r1
851var ecdsaSHA1CertPem = `
852-----BEGIN CERTIFICATE-----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865-----END CERTIFICATE-----
866`
867
868// Self-signed certificate using ECDSA with SHA256 & secp256r1
869var ecdsaSHA256p256CertPem = `
870-----BEGIN CERTIFICATE-----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883-----END CERTIFICATE-----
884`
885
886// Self-signed certificate using ECDSA with SHA256 & secp384r1
887var ecdsaSHA256p384CertPem = `
888-----BEGIN CERTIFICATE-----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902-----END CERTIFICATE-----
903`
904
905// Self-signed certificate using ECDSA with SHA384 & secp521r1
906var ecdsaSHA384p521CertPem = `
907-----BEGIN CERTIFICATE-----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922-----END CERTIFICATE-----
923`
924
925var ecdsaTests = []struct {
926	sigAlgo SignatureAlgorithm
927	pemCert string
928}{
929	{ECDSAWithSHA1, ecdsaSHA1CertPem},
930	{ECDSAWithSHA256, ecdsaSHA256p256CertPem},
931	{ECDSAWithSHA256, ecdsaSHA256p384CertPem},
932	{ECDSAWithSHA384, ecdsaSHA384p521CertPem},
933}
934
935func TestECDSA(t *testing.T) {
936	for i, test := range ecdsaTests {
937		pemBlock, _ := pem.Decode([]byte(test.pemCert))
938		cert, err := ParseCertificate(pemBlock.Bytes)
939		if err != nil {
940			t.Errorf("%d: failed to parse certificate: %s", i, err)
941			continue
942		}
943		if sa := cert.SignatureAlgorithm; sa != test.sigAlgo {
944			t.Errorf("%d: signature algorithm is %v, want %v", i, sa, test.sigAlgo)
945		}
946		if parsedKey, ok := cert.PublicKey.(*ecdsa.PublicKey); !ok {
947			t.Errorf("%d: wanted an ECDSA public key but found: %#v", i, parsedKey)
948		}
949		if pka := cert.PublicKeyAlgorithm; pka != ECDSA {
950			t.Errorf("%d: public key algorithm is %v, want ECDSA", i, pka)
951		}
952		if err = cert.CheckSignatureFrom(cert); err != nil {
953			t.Errorf("%d: certificate verification failed: %s", i, err)
954		}
955	}
956}
957
958// Self-signed certificate using DSA with SHA1
959var dsaCertPem = `-----BEGIN CERTIFICATE-----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982-----END CERTIFICATE-----
983`
984
985func TestParseCertificateWithDsaPublicKey(t *testing.T) {
986	expectedKey := &dsa.PublicKey{
987		Parameters: dsa.Parameters{
988			P: bigFromHexString("00BC84B52743B169158BB85974E3E832AF5EFCFC42B264349095313A4A013EEE069A1B937D92E51ACF297A1C77880DF25C8607D8204B4DC45651305EF4A63B40C7D8C42D91EDA397D8F51CBC9D0A531FE2C6F1E55E9357D205C39D395358968CBEDAC11320C607BE16CB9DB492B6E78163305A34DD99CE43C64927D13A0040EB97"),
989			Q: bigFromHexString("009A67067F66A323F5D4EC7902C73FE5D9E36FA74F"),
990			G: bigFromHexString("009147778295BF5893542BC41BA806898A29E43261DBC85441C37D92E97ED80D323D44825FDDE8374D0FF15877798812682599B216BBCC31B9DCCAD527465FEAFFD7FC2A193612E575E34E7A98AF4D10339FE47390A518CB9975B3160B1D0285D1418D0977C52994F43C29A053E3D685834104C9FAFDC221E38BE9F3989D7A8E42"),
991		},
992		Y: bigFromHexString("59A27C269FCDE45AA2160A5C980C19211A820095091AB9C5DC8309AB7EC1B3A48C2E267C6D35FEE9B71BCBB92F16AC8E559129347FB5C00BEEDD10BA8915C90698755CA965735A32DC7575BED806E1E38F768FFBC24E41123DC73F1C6E9E4D0C9E692128853AFE29DC665FA993DCA9C903B7BF00B6442B9A76A5DADC6186317A"),
993	}
994	pemBlock, _ := pem.Decode([]byte(dsaCertPem))
995	cert, err := ParseCertificate(pemBlock.Bytes)
996	if err != nil {
997		t.Fatalf("Failed to parse certificate: %s", err)
998	}
999	if cert.PublicKeyAlgorithm != DSA {
1000		t.Errorf("Parsed key algorithm was not DSA")
1001	}
1002	parsedKey, ok := cert.PublicKey.(*dsa.PublicKey)
1003	if !ok {
1004		t.Fatalf("Parsed key was not a DSA key: %s", err)
1005	}
1006	if expectedKey.Y.Cmp(parsedKey.Y) != 0 ||
1007		expectedKey.P.Cmp(parsedKey.P) != 0 ||
1008		expectedKey.Q.Cmp(parsedKey.Q) != 0 ||
1009		expectedKey.G.Cmp(parsedKey.G) != 0 {
1010		t.Fatal("Parsed key differs from expected key")
1011	}
1012}
1013
1014func TestParseCertificateWithDSASignatureAlgorithm(t *testing.T) {
1015	pemBlock, _ := pem.Decode([]byte(dsaCertPem))
1016	cert, err := ParseCertificate(pemBlock.Bytes)
1017	if err != nil {
1018		t.Fatalf("Failed to parse certificate: %s", err)
1019	}
1020	if cert.SignatureAlgorithm != DSAWithSHA1 {
1021		t.Errorf("Parsed signature algorithm was not DSAWithSHA1")
1022	}
1023}
1024
1025func TestVerifyCertificateWithDSASignature(t *testing.T) {
1026	pemBlock, _ := pem.Decode([]byte(dsaCertPem))
1027	cert, err := ParseCertificate(pemBlock.Bytes)
1028	if err != nil {
1029		t.Fatalf("Failed to parse certificate: %s", err)
1030	}
1031	// test cert is self-signed
1032	if err = cert.CheckSignatureFrom(cert); err != nil {
1033		t.Fatalf("DSA Certificate verification failed: %s", err)
1034	}
1035}
1036
1037var rsaPSSSelfSignedPEM = `-----BEGIN CERTIFICATE-----
1038MIIGHjCCA9KgAwIBAgIBdjBBBgkqhkiG9w0BAQowNKAPMA0GCWCGSAFlAwQCAQUA
1039oRwwGgYJKoZIhvcNAQEIMA0GCWCGSAFlAwQCAQUAogMCASAwbjELMAkGA1UEBhMC
1040SlAxHDAaBgNVBAoME0phcGFuZXNlIEdvdmVybm1lbnQxKDAmBgNVBAsMH1RoZSBN
1041aW5pc3RyeSBvZiBGb3JlaWduIEFmZmFpcnMxFzAVBgNVBAMMDmUtcGFzc3BvcnRD
1042U0NBMB4XDTEzMDUxNDA1MDczMFoXDTI5MDUxNDA1MDczMFowbjELMAkGA1UEBhMC
1043SlAxHDAaBgNVBAoME0phcGFuZXNlIEdvdmVybm1lbnQxKDAmBgNVBAsMH1RoZSBN
1044aW5pc3RyeSBvZiBGb3JlaWduIEFmZmFpcnMxFzAVBgNVBAMMDmUtcGFzc3BvcnRD
1045U0NBMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAx/E3WRVxcCDXhoST
10468nVSLjW6hwM4Ni99AegWzcGtfGFo0zjFA1Cl5URqxauvYu3gQgQHBGA1CovWeGrl
1047yVSRzOL1imcYsSgLOcnhVYB3Xcrof4ebv9+W+TwNdc9YzAwcj8rNd5nP6PKXIQ+W
1048PCkEOXdyb80YEnxuT+NPjkVfFSPBS7QYZpvT2fwy4fZ0eh48253+7VleSmTO0mqj
10497TlzaG56q150SLZbhpOd8jD8bM/wACnLCPR88wj4hCcDLEwoLyY85HJCTIQQMnoT
1050UpqyzEeupPREIm6yi4d8C9YqIWFn2YTnRcWcmMaJLzq+kYwKoudfnoC6RW2vzZXn
1051defQs68IZuK+uALu9G3JWGPgu0CQGj0JNDT8zkiDV++4eNrZczWKjr1YnAL+VbLK
1052bApwL2u19l2WDpfUklimhWfraqHNIUKU6CjZOG31RzXcplIj0mtqs0E1r7r357Es
1053yFoB28iNo4cz1lCulh0E4WJzWzLZcT4ZspHHRCFyvYnXoibXEV1nULq8ByKKG0FS
10547nn4SseoV+8PvjHLPhmHGMvi4mxkbcXdV3wthHT1/HXdqY84A4xHWt1+sB/TpTek
1055tDhFlEfcUygvTu58UtOnysomOVVeERmi7WSujfzKsGJAJYeetiA5R+zX7BxeyFVE
1056qW0zh1Tkwh0S8LRe5diJh4+6FG0CAwEAAaNfMF0wHQYDVR0OBBYEFD+oahaikBTV
1057Urk81Uz7kRS2sx0aMA4GA1UdDwEB/wQEAwIBBjAYBgNVHSAEETAPMA0GCyqDCIaP
1058fgYFAQEBMBIGA1UdEwEB/wQIMAYBAf8CAQAwQQYJKoZIhvcNAQEKMDSgDzANBglg
1059hkgBZQMEAgEFAKEcMBoGCSqGSIb3DQEBCDANBglghkgBZQMEAgEFAKIDAgEgA4IC
1060AQAaxWBQn5CZuNBfyzL57mn31ukHUFd61OMROSX3PT7oCv1Dy+C2AdRlxOcbN3/n
1061li0yfXUUqiY3COlLAHKRlkr97mLtxEFoJ0R8nVN2IQdChNQM/XSCzSGyY8NVa1OR
1062TTpEWLnexJ9kvIdbFXwUqdTnAkOI0m7Rg8j+E+lRRHg1xDAA1qKttrtUj3HRQWf3
1063kNTu628SiMvap6aIdncburaK56MP7gkR1Wr/ichOfjIA3Jgw2PapI31i0GqeMd66
1064U1+lC9FeyMAJpuSVp/SoiYzYo+79SFcVoM2yw3yAnIKg7q9GLYYqzncdykT6C06c
106515gWFI6igmReAsD9ITSvYh0jLrLHfEYcPTOD3ZXJ4EwwHtWSoO3gq1EAtOYKu/Lv
1066C8zfBsZcFdsHvsSiYeBU8Oioe42mguky3Ax9O7D805Ek6R68ra07MW/G4YxvV7IN
10672BfSaYy8MX9IG0ZMIOcoc0FeF5xkFmJ7kdrlTaJzC0IE9PNxNaH5QnOAFB8vxHcO
1068FioUxb6UKdHcPLR1VZtAdTdTMjSJxUqD/35Cdfqs7oDJXz8f6TXO2Tdy6G++YUs9
1069qsGZWxzFvvkXUkQSl0dQQ5jO/FtUJcAVXVVp20LxPemfatAHpW31WdJYeWSQWky2
1070+f9b5TXKXVyjlUL7uHxowWrT2AtTchDH22wTEtqLEF9Z3Q==
1071-----END CERTIFICATE-----`
1072
1073func TestRSAPSSSelfSigned(t *testing.T) {
1074	der, _ := pem.Decode([]byte(rsaPSSSelfSignedPEM))
1075	if der == nil {
1076		t.Fatal("Failed to find PEM block")
1077	}
1078
1079	cert, err := ParseCertificate(der.Bytes)
1080	if err != nil {
1081		t.Fatal(err)
1082	}
1083
1084	if err = cert.CheckSignatureFrom(cert); err != nil {
1085		t.Fatal(err)
1086	}
1087}
1088
1089const (
1090	pemCertificate = `-----BEGIN CERTIFICATE-----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1108-----END CERTIFICATE-----`
1109	pemPrecertificate = `-----BEGIN CERTIFICATE-----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1126-----END CERTIFICATE-----`
1127)
1128
1129func TestIsPrecertificate(t *testing.T) {
1130	tests := []struct {
1131		desc    string
1132		certPEM string
1133		want    bool
1134	}{
1135		{
1136			desc:    "certificate",
1137			certPEM: pemCertificate,
1138			want:    false,
1139		},
1140		{
1141			desc:    "precertificate",
1142			certPEM: pemPrecertificate,
1143			want:    true,
1144		},
1145		{
1146			desc:    "nil",
1147			certPEM: "",
1148			want:    false,
1149		},
1150	}
1151
1152	for _, test := range tests {
1153		var cert *Certificate
1154		if test.certPEM != "" {
1155			var err error
1156			cert, err = certificateFromPEM(test.certPEM)
1157			if err != nil {
1158				t.Errorf("%s: error parsing certificate: %s", test.desc, err)
1159				continue
1160			}
1161		}
1162		if got := cert.IsPrecertificate(); got != test.want {
1163			t.Errorf("%s: c.IsPrecertificate() = %t, want %t", test.desc, got, test.want)
1164		}
1165	}
1166}
1167
1168func TestCRLCreation(t *testing.T) {
1169	block, _ := pem.Decode([]byte(pemPrivateKey))
1170	priv, _ := ParsePKCS1PrivateKey(block.Bytes)
1171	block, _ = pem.Decode([]byte(pemCertificate))
1172	cert, _ := ParseCertificate(block.Bytes)
1173
1174	loc := time.FixedZone("Oz/Atlantis", int((2 * time.Hour).Seconds()))
1175
1176	now := time.Unix(1000, 0).In(loc)
1177	nowUTC := now.UTC()
1178	expiry := time.Unix(10000, 0)
1179
1180	revokedCerts := []pkix.RevokedCertificate{
1181		{
1182			SerialNumber:   big.NewInt(1),
1183			RevocationTime: nowUTC,
1184		},
1185		{
1186			SerialNumber: big.NewInt(42),
1187			// RevocationTime should be converted to UTC before marshaling.
1188			RevocationTime: now,
1189		},
1190	}
1191	expectedCerts := []pkix.RevokedCertificate{
1192		{
1193			SerialNumber:   big.NewInt(1),
1194			RevocationTime: nowUTC,
1195		},
1196		{
1197			SerialNumber:   big.NewInt(42),
1198			RevocationTime: nowUTC,
1199		},
1200	}
1201
1202	crlBytes, err := cert.CreateCRL(rand.Reader, priv, revokedCerts, now, expiry)
1203	if err != nil {
1204		t.Errorf("error creating CRL: %s", err)
1205	}
1206
1207	parsedCRL, err := ParseDERCRL(crlBytes)
1208	if err != nil {
1209		t.Errorf("error reparsing CRL: %s", err)
1210	}
1211	if !reflect.DeepEqual(parsedCRL.TBSCertList.RevokedCertificates, expectedCerts) {
1212		t.Errorf("RevokedCertificates mismatch: got %v; want %v.",
1213			parsedCRL.TBSCertList.RevokedCertificates, expectedCerts)
1214	}
1215}
1216
1217func fromBase64(in string) []byte {
1218	out := make([]byte, base64.StdEncoding.DecodedLen(len(in)))
1219	n, err := base64.StdEncoding.Decode(out, []byte(in))
1220	if err != nil {
1221		panic("failed to base64 decode")
1222	}
1223	return out[:n]
1224}
1225
1226func TestParseDERCRL(t *testing.T) {
1227	derBytes := fromBase64(derCRLBase64)
1228	certList, err := ParseDERCRL(derBytes)
1229	if err != nil {
1230		t.Errorf("error parsing: %s", err)
1231		return
1232	}
1233	numCerts := len(certList.TBSCertList.RevokedCertificates)
1234	expected := 88
1235	if numCerts != expected {
1236		t.Errorf("bad number of revoked certificates. got: %d want: %d", numCerts, expected)
1237	}
1238
1239	if certList.HasExpired(time.Unix(1302517272, 0)) {
1240		t.Errorf("CRL has expired (but shouldn't have)")
1241	}
1242
1243	// Can't check the signature here without a package cycle.
1244}
1245
1246func TestCRLWithoutExpiry(t *testing.T) {
1247	derBytes := fromBase64("MIHYMIGZMAkGByqGSM44BAMwEjEQMA4GA1UEAxMHQ2FybERTUxcNOTkwODI3MDcwMDAwWjBpMBMCAgDIFw05OTA4MjIwNzAwMDBaMBMCAgDJFw05OTA4MjIwNzAwMDBaMBMCAgDTFw05OTA4MjIwNzAwMDBaMBMCAgDSFw05OTA4MjIwNzAwMDBaMBMCAgDUFw05OTA4MjQwNzAwMDBaMAkGByqGSM44BAMDLwAwLAIUfmVSdjP+NHMX0feW+aDU2G1cfT0CFAJ6W7fVWxjBz4fvftok8yqDnDWh")
1248	certList, err := ParseDERCRL(derBytes)
1249	if err != nil {
1250		t.Fatal(err)
1251	}
1252	if !certList.TBSCertList.NextUpdate.IsZero() {
1253		t.Errorf("NextUpdate is not the zero value")
1254	}
1255}
1256
1257func TestParsePEMCRL(t *testing.T) {
1258	pemBytes := fromBase64(pemCRLBase64)
1259	certList, err := ParseCRL(pemBytes)
1260	if err != nil {
1261		t.Errorf("error parsing: %s", err)
1262		return
1263	}
1264	numCerts := len(certList.TBSCertList.RevokedCertificates)
1265	expected := 2
1266	if numCerts != expected {
1267		t.Errorf("bad number of revoked certificates. got: %d want: %d", numCerts, expected)
1268	}
1269
1270	if certList.HasExpired(time.Unix(1302517272, 0)) {
1271		t.Errorf("CRL has expired (but shouldn't have)")
1272	}
1273
1274	// Can't check the signature here without a package cycle.
1275}
1276
1277func TestNonFatalErrors(t *testing.T) {
1278	nfe := NonFatalErrors{}
1279
1280	nfe.AddError(errors.New("one"))
1281	nfe.AddError(errors.New("two"))
1282	nfe.AddError(errors.New("three"))
1283
1284	if !nfe.HasError() {
1285		t.Fatal("NonFatalError claimed not to have an error")
1286	}
1287
1288	if !strings.Contains(nfe.Error(), "one; two; three") {
1289		t.Fatalf("Didn't see expected string from Error(), got '%s'", nfe.Error())
1290	}
1291}
1292
1293func TestIsFatal(t *testing.T) {
1294	tests := []struct {
1295		err  error
1296		want bool
1297	}{
1298		{err: errors.New("normal error"), want: true},
1299		{err: NonFatalErrors{}, want: false},
1300		{err: nil, want: false},
1301		{err: &Errors{}, want: false},
1302		{err: &Errors{Errs: []Error{{ID: 1, Summary: "test", Fatal: true}}}, want: true},
1303		{err: &Errors{Errs: []Error{{ID: 1, Summary: "test", Fatal: false}}}, want: false},
1304	}
1305	for _, test := range tests {
1306		got := IsFatal(test.err)
1307		if got != test.want {
1308			t.Errorf("IsFatal(%T %v)=%v, want %v", test.err, test.err, got, test.want)
1309		}
1310	}
1311}
1312
1313const (
1314	tbsNoPoison = "30820245a003020102020842822a5b866fbfeb300d06092a864886f70d01010b" +
1315		"05003071310b3009060355040613024742310f300d060355040813064c6f6e64" +
1316		"6f6e310f300d060355040713064c6f6e646f6e310f300d060355040a1306476f" +
1317		"6f676c65310c300a060355040b1303456e673121301f0603550403131846616b" +
1318		"654365727469666963617465417574686f72697479301e170d31363037313731" +
1319		"31313534305a170d3139303331393131313534305a3066310b30090603550406" +
1320		"130255533113301106035504080c0a43616c69666f726e696131163014060355" +
1321		"04070c0d4d6f756e7461696e205669657731133011060355040a0c0a476f6f67" +
1322		"6c6520496e633115301306035504030c0c2a2e676f6f676c652e636f6d305930" +
1323		"1306072a8648ce3d020106082a8648ce3d03010703420004c4093984f5158d12" +
1324		"54b2029cf901e26d3547d40dd011616609351dcb121495b23fff35bd228e4dfc" +
1325		"38502d22d6981ecaa023afa4967e32d1825f3157fb28ff37a381ce3081cb301d" +
1326		"0603551d250416301406082b0601050507030106082b06010505070302306806" +
1327		"082b06010505070101045c305a302b06082b06010505073002861f687474703a" +
1328		"2f2f706b692e676f6f676c652e636f6d2f47494147322e637274302b06082b06" +
1329		"010505073001861f687474703a2f2f636c69656e7473312e676f6f676c652e63" +
1330		"6f6d2f6f637370301d0603551d0e04160414dbf46e63eee2dcbebf38604f9831" +
1331		"d06444f163d830210603551d20041a3018300c060a2b06010401d67902050130" +
1332		"08060667810c010202"
1333	tbsPoisonFirst = "3082025aa003020102020842822a5b866fbfeb300d06092a864886f70d01010b" +
1334		"05003071310b3009060355040613024742310f300d060355040813064c6f6e64" +
1335		"6f6e310f300d060355040713064c6f6e646f6e310f300d060355040a1306476f" +
1336		"6f676c65310c300a060355040b1303456e673121301f0603550403131846616b" +
1337		"654365727469666963617465417574686f72697479301e170d31363037313731" +
1338		"31313534305a170d3139303331393131313534305a3066310b30090603550406" +
1339		"130255533113301106035504080c0a43616c69666f726e696131163014060355" +
1340		"04070c0d4d6f756e7461696e205669657731133011060355040a0c0a476f6f67" +
1341		"6c6520496e633115301306035504030c0c2a2e676f6f676c652e636f6d305930" +
1342		"1306072a8648ce3d020106082a8648ce3d03010703420004c4093984f5158d12" +
1343		"54b2029cf901e26d3547d40dd011616609351dcb121495b23fff35bd228e4dfc" +
1344		"38502d22d6981ecaa023afa4967e32d1825f3157fb28ff37a381e33081e03013" +
1345		"060a2b06010401d6790204030101ff04020500301d0603551d25041630140608" +
1346		"2b0601050507030106082b06010505070302306806082b06010505070101045c" +
1347		"305a302b06082b06010505073002861f687474703a2f2f706b692e676f6f676c" +
1348		"652e636f6d2f47494147322e637274302b06082b06010505073001861f687474" +
1349		"703a2f2f636c69656e7473312e676f6f676c652e636f6d2f6f637370301d0603" +
1350		"551d0e04160414dbf46e63eee2dcbebf38604f9831d06444f163d83021060355" +
1351		"1d20041a3018300c060a2b06010401d6790205013008060667810c010202"
1352	tbsPoisonLast = "3082025aa003020102020842822a5b866fbfeb300d06092a864886f70d01010b" +
1353		"05003071310b3009060355040613024742310f300d060355040813064c6f6e64" +
1354		"6f6e310f300d060355040713064c6f6e646f6e310f300d060355040a1306476f" +
1355		"6f676c65310c300a060355040b1303456e673121301f0603550403131846616b" +
1356		"654365727469666963617465417574686f72697479301e170d31363037313731" +
1357		"31313534305a170d3139303331393131313534305a3066310b30090603550406" +
1358		"130255533113301106035504080c0a43616c69666f726e696131163014060355" +
1359		"04070c0d4d6f756e7461696e205669657731133011060355040a0c0a476f6f67" +
1360		"6c6520496e633115301306035504030c0c2a2e676f6f676c652e636f6d305930" +
1361		"1306072a8648ce3d020106082a8648ce3d03010703420004c4093984f5158d12" +
1362		"54b2029cf901e26d3547d40dd011616609351dcb121495b23fff35bd228e4dfc" +
1363		"38502d22d6981ecaa023afa4967e32d1825f3157fb28ff37a381e33081e0301d" +
1364		"0603551d250416301406082b0601050507030106082b06010505070302306806" +
1365		"082b06010505070101045c305a302b06082b06010505073002861f687474703a" +
1366		"2f2f706b692e676f6f676c652e636f6d2f47494147322e637274302b06082b06" +
1367		"010505073001861f687474703a2f2f636c69656e7473312e676f6f676c652e63" +
1368		"6f6d2f6f637370301d0603551d0e04160414dbf46e63eee2dcbebf38604f9831" +
1369		"d06444f163d830210603551d20041a3018300c060a2b06010401d67902050130" +
1370		"08060667810c0102023013060a2b06010401d6790204030101ff04020500"
1371	tbsPoisonMiddle = "3082025aa003020102020842822a5b866fbfeb300d06092a864886f70d01010b" +
1372		"05003071310b3009060355040613024742310f300d060355040813064c6f6e64" +
1373		"6f6e310f300d060355040713064c6f6e646f6e310f300d060355040a1306476f" +
1374		"6f676c65310c300a060355040b1303456e673121301f0603550403131846616b" +
1375		"654365727469666963617465417574686f72697479301e170d31363037313731" +
1376		"31313534305a170d3139303331393131313534305a3066310b30090603550406" +
1377		"130255533113301106035504080c0a43616c69666f726e696131163014060355" +
1378		"04070c0d4d6f756e7461696e205669657731133011060355040a0c0a476f6f67" +
1379		"6c6520496e633115301306035504030c0c2a2e676f6f676c652e636f6d305930" +
1380		"1306072a8648ce3d020106082a8648ce3d03010703420004c4093984f5158d12" +
1381		"54b2029cf901e26d3547d40dd011616609351dcb121495b23fff35bd228e4dfc" +
1382		"38502d22d6981ecaa023afa4967e32d1825f3157fb28ff37a381e33081e0301d" +
1383		"0603551d250416301406082b0601050507030106082b06010505070302306806" +
1384		"082b06010505070101045c305a302b06082b06010505073002861f687474703a" +
1385		"2f2f706b692e676f6f676c652e636f6d2f47494147322e637274302b06082b06" +
1386		"010505073001861f687474703a2f2f636c69656e7473312e676f6f676c652e63" +
1387		"6f6d2f6f6373703013060a2b06010401d6790204030101ff04020500301d0603" +
1388		"551d0e04160414dbf46e63eee2dcbebf38604f9831d06444f163d83021060355" +
1389		"1d20041a3018300c060a2b06010401d6790205013008060667810c010202"
1390	tbsPoisonTwice = "3082026fa003020102020842822a5b866fbfeb300d06092a864886f70d01010b" +
1391		"05003071310b3009060355040613024742310f300d060355040813064c6f6e64" +
1392		"6f6e310f300d060355040713064c6f6e646f6e310f300d060355040a1306476f" +
1393		"6f676c65310c300a060355040b1303456e673121301f0603550403131846616b" +
1394		"654365727469666963617465417574686f72697479301e170d31363037313731" +
1395		"31313534305a170d3139303331393131313534305a3066310b30090603550406" +
1396		"130255533113301106035504080c0a43616c69666f726e696131163014060355" +
1397		"04070c0d4d6f756e7461696e205669657731133011060355040a0c0a476f6f67" +
1398		"6c6520496e633115301306035504030c0c2a2e676f6f676c652e636f6d305930" +
1399		"1306072a8648ce3d020106082a8648ce3d03010703420004c4093984f5158d12" +
1400		"54b2029cf901e26d3547d40dd011616609351dcb121495b23fff35bd228e4dfc" +
1401		"38502d22d6981ecaa023afa4967e32d1825f3157fb28ff37a381f83081f5301d" +
1402		"0603551d250416301406082b0601050507030106082b06010505070302306806" +
1403		"082b06010505070101045c305a302b06082b06010505073002861f687474703a" +
1404		"2f2f706b692e676f6f676c652e636f6d2f47494147322e637274302b06082b06" +
1405		"010505073001861f687474703a2f2f636c69656e7473312e676f6f676c652e63" +
1406		"6f6d2f6f6373703013060a2b06010401d6790204030101ff04020500301d0603" +
1407		"551d0e04160414dbf46e63eee2dcbebf38604f9831d06444f163d83013060a2b" +
1408		"06010401d6790204030101ff0402050030210603551d20041a3018300c060a2b" +
1409		"06010401d6790205013008060667810c010202"
1410)
1411
1412func TestRemoveCTPoison(t *testing.T) {
1413	var tests = []struct {
1414		name   string // for human consumption
1415		tbs    string // hex encoded
1416		want   string // hex encoded
1417		errstr string
1418	}{
1419		{name: "invalid-der", tbs: "01020304", errstr: "failed to parse"},
1420		{name: "trailing-data", tbs: tbsPoisonMiddle + "01020304", errstr: "trailing data"},
1421		{name: "no-poison-ext", tbs: tbsNoPoison, errstr: "no extension of specified type present"},
1422		{name: "two-poison-exts", tbs: tbsPoisonTwice, errstr: "multiple extensions of specified type present"},
1423		{name: "poison-first", tbs: tbsPoisonFirst, want: tbsNoPoison},
1424		{name: "poison-last", tbs: tbsPoisonLast, want: tbsNoPoison},
1425		{name: "poison-middle", tbs: tbsPoisonMiddle, want: tbsNoPoison},
1426	}
1427	for _, test := range tests {
1428		in, _ := hex.DecodeString(test.tbs)
1429		got, err := RemoveCTPoison(in)
1430		if test.errstr != "" {
1431			if err == nil {
1432				t.Errorf("RemoveCTPoison(%s)=%s,nil; want error %q", test.name, hex.EncodeToString(got), test.errstr)
1433			} else if !strings.Contains(err.Error(), test.errstr) {
1434				t.Errorf("RemoveCTPoison(%s)=nil,%q; want error %q", test.name, err, test.errstr)
1435			}
1436			continue
1437		}
1438		want, _ := hex.DecodeString(test.want)
1439		if err != nil {
1440			t.Errorf("RemoveCTPoison(%s)=nil,%q; want %s,nil", test.name, err, test.want)
1441		} else if !bytes.Equal(got, want) {
1442			t.Errorf("RemoveCTPoison(%s)=%s,nil; want %s,nil", test.name, hex.EncodeToString(got), test.want)
1443		}
1444	}
1445}
1446
1447func makeCert(t *testing.T, template, issuer *Certificate) *Certificate {
1448	t.Helper()
1449	certData, err := CreateCertificate(rand.Reader, template, issuer, &testPrivateKey.PublicKey, testPrivateKey)
1450	if err != nil {
1451		t.Fatalf("failed to create pre-cert: %v", err)
1452	}
1453	cert, err := ParseCertificate(certData)
1454	if err != nil {
1455		t.Fatalf("failed to re-parse pre-cert: %v", err)
1456	}
1457	return cert
1458}
1459
1460func TestBuildPrecertTBS(t *testing.T) {
1461	poisonExt := pkix.Extension{Id: OIDExtensionCTPoison, Critical: true, Value: asn1.NullBytes}
1462	preIssuerKeyID := []byte{0x19, 0x09, 0x19, 0x70}
1463	issuerKeyID := []byte{0x07, 0x07, 0x20, 0x07}
1464	preCertTemplate := Certificate{
1465		Version:         3,
1466		SerialNumber:    big.NewInt(123),
1467		Issuer:          pkix.Name{CommonName: "precert Issuer"},
1468		Subject:         pkix.Name{CommonName: "precert subject"},
1469		NotBefore:       time.Now(),
1470		NotAfter:        time.Now().Add(3 * time.Hour),
1471		ExtraExtensions: []pkix.Extension{poisonExt},
1472		AuthorityKeyId:  preIssuerKeyID,
1473	}
1474	preIssuerTemplate := Certificate{
1475		Version:        3,
1476		SerialNumber:   big.NewInt(1234),
1477		Issuer:         pkix.Name{CommonName: "real Issuer"},
1478		Subject:        pkix.Name{CommonName: "precert Issuer"},
1479		NotBefore:      time.Now(),
1480		NotAfter:       time.Now().Add(3 * time.Hour),
1481		AuthorityKeyId: issuerKeyID,
1482		SubjectKeyId:   preIssuerKeyID,
1483		ExtKeyUsage:    []ExtKeyUsage{ExtKeyUsageCertificateTransparency},
1484	}
1485	actualIssuerTemplate := Certificate{
1486		Version:      3,
1487		SerialNumber: big.NewInt(12345),
1488		Issuer:       pkix.Name{CommonName: "real Issuer"},
1489		Subject:      pkix.Name{CommonName: "real Issuer"},
1490		NotBefore:    time.Now(),
1491		NotAfter:     time.Now().Add(3 * time.Hour),
1492		SubjectKeyId: issuerKeyID,
1493	}
1494	preCertWithAKI := makeCert(t, &preCertTemplate, &preIssuerTemplate)
1495	preIssuerWithAKI := makeCert(t, &preIssuerTemplate, &actualIssuerTemplate)
1496
1497	preIssuerTemplate.AuthorityKeyId = nil
1498	actualIssuerTemplate.SubjectKeyId = nil
1499	preIssuerWithoutAKI := makeCert(t, &preIssuerTemplate, &actualIssuerTemplate)
1500
1501	preCertTemplate.AuthorityKeyId = nil
1502	preIssuerTemplate.SubjectKeyId = nil
1503	preCertWithoutAKI := makeCert(t, &preCertTemplate, &preIssuerTemplate)
1504
1505	preIssuerTemplate.ExtKeyUsage = nil
1506	invalidPreIssuer := makeCert(t, &preIssuerTemplate, &actualIssuerTemplate)
1507
1508	akiPrefix := []byte{0x30, 0x06, 0x80, 0x04} // SEQUENCE { [0] { ... } }
1509	var tests = []struct {
1510		name      string
1511		tbs       *Certificate
1512		preIssuer *Certificate
1513		wantAKI   []byte
1514		wantErr   bool
1515	}{
1516		{
1517			name:    "no-preIssuer-provided",
1518			tbs:     preCertWithAKI,
1519			wantAKI: append(akiPrefix, preIssuerKeyID...),
1520		},
1521		{
1522			name:      "both-with-AKI",
1523			tbs:       preCertWithAKI,
1524			preIssuer: preIssuerWithAKI,
1525			wantAKI:   append(akiPrefix, issuerKeyID...),
1526		},
1527		{
1528			name:      "invalid-preIssuer",
1529			tbs:       preCertWithAKI,
1530			preIssuer: invalidPreIssuer,
1531			wantErr:   true,
1532		},
1533		{
1534			name:      "both-without-AKI",
1535			tbs:       preCertWithoutAKI,
1536			preIssuer: preIssuerWithoutAKI,
1537		},
1538		{
1539			name:      "precert-with-preIssuer-without-AKI",
1540			tbs:       preCertWithAKI,
1541			preIssuer: preIssuerWithoutAKI,
1542		},
1543		{
1544			name:      "precert-without-preIssuer-with-AKI",
1545			tbs:       preCertWithoutAKI,
1546			preIssuer: preIssuerWithAKI,
1547			wantAKI:   append(akiPrefix, issuerKeyID...),
1548		},
1549	}
1550	for _, test := range tests {
1551		got, err := BuildPrecertTBS(test.tbs.RawTBSCertificate, test.preIssuer)
1552		if err != nil {
1553			if !test.wantErr {
1554				t.Errorf("BuildPrecertTBS(%s)=nil,%q; want _,nil", test.name, err)
1555			}
1556			continue
1557		}
1558		if test.wantErr {
1559			t.Errorf("BuildPrecertTBS(%s)=_,nil; want _,non-nil", test.name)
1560		}
1561
1562		var tbs tbsCertificate
1563		if rest, err := asn1.Unmarshal(got, &tbs); err != nil {
1564			t.Errorf("BuildPrecertTBS(%s) gave unparsable TBS: %v", test.name, err)
1565			continue
1566		} else if len(rest) > 0 {
1567			t.Errorf("BuildPrecertTBS(%s) gave extra data in DER", test.name)
1568		}
1569		if test.preIssuer != nil {
1570			if got, want := tbs.Issuer.FullBytes, test.preIssuer.RawIssuer; !bytes.Equal(got, want) {
1571				t.Errorf("BuildPrecertTBS(%s).Issuer=%x, want %x", test.name, got, want)
1572			}
1573		}
1574		var gotAKI []byte
1575		for _, ext := range tbs.Extensions {
1576			if ext.Id.Equal(OIDExtensionAuthorityKeyId) {
1577				gotAKI = ext.Value
1578				break
1579			}
1580		}
1581		if gotAKI != nil {
1582			if test.wantAKI != nil {
1583				if !reflect.DeepEqual(gotAKI, test.wantAKI) {
1584					t.Errorf("BuildPrecertTBS(%s).Extensions[AKI]=%+v, want %+v", test.name, gotAKI, test.wantAKI)
1585				}
1586			} else {
1587				t.Errorf("BuildPrecertTBS(%s).Extensions[AKI]=%+v, want nil", test.name, gotAKI)
1588			}
1589		} else if test.wantAKI != nil {
1590			t.Errorf("BuildPrecertTBS(%s).Extensions[AKI]=nil, want %+v", test.name, test.wantAKI)
1591		}
1592	}
1593}
1594
1595func TestImports(t *testing.T) {
1596	//	testenv.MustHaveGoRun(t)
1597
1598	// Replace testenv.GoToolPath(t) with "go" for use outside of Go repo.
1599	if err := exec.Command("go", "run", "x509_test_import.go").Run(); err != nil {
1600		t.Errorf("failed to run x509_test_import.go: %s", err)
1601	}
1602}
1603
1604const derCRLBase64 = "MIINqzCCDJMCAQEwDQYJKoZIhvcNAQEFBQAwVjEZMBcGA1UEAxMQUEtJIEZJTk1FQ0NBTklDQTEVMBMGA1UEChMMRklOTUVDQ0FOSUNBMRUwEwYDVQQLEwxGSU5NRUNDQU5JQ0ExCzAJBgNVBAYTAklUFw0xMTA1MDQxNjU3NDJaFw0xMTA1MDQyMDU3NDJaMIIMBzAhAg4Ze1od49Lt1qIXBydAzhcNMDkwNzE2MDg0MzIyWjAAMCECDl0HSL9bcZ1Ci/UHJ0DPFw0wOTA3MTYwODQzMTNaMAAwIQIOESB9tVAmX3cY7QcnQNAXDTA5MDcxNjA4NDUyMlowADAhAg4S1tGAQ3mHt8uVBydA1RcNMDkwODA0MTUyNTIyWjAAMCECDlQ249Y7vtC25ScHJ0DWFw0wOTA4MDQxNTI1MzdaMAAwIQIOISMop3NkA4PfYwcnQNkXDTA5MDgwNDExMDAzNFowADAhAg56/BMoS29KEShTBydA2hcNMDkwODA0MTEwMTAzWjAAMCECDnBp/22HPH5CSWoHJ0DbFw0wOTA4MDQxMDU0NDlaMAAwIQIOV9IP+8CD8bK+XAcnQNwXDTA5MDgwNDEwNTcxN1owADAhAg4v5aRz0IxWqYiXBydA3RcNMDkwODA0MTA1NzQ1WjAAMCECDlOU34VzvZAybQwHJ0DeFw0wOTA4MDQxMDU4MjFaMAAwIAINO4CD9lluIxcwBydBAxcNMDkwNzIyMTUzMTU5WjAAMCECDgOllfO8Y1QA7/wHJ0ExFw0wOTA3MjQxMTQxNDNaMAAwIQIOJBX7jbiCdRdyjgcnQUQXDTA5MDkxNjA5MzAwOFowADAhAg5iYSAgmDrlH/RZBydBRRcNMDkwOTE2MDkzMDE3WjAAMCECDmu6k6srP3jcMaQHJ0FRFw0wOTA4MDQxMDU2NDBaMAAwIQIOX8aHlO0V+WVH4QcnQVMXDTA5MDgwNDEwNTcyOVowADAhAg5flK2rg3NnsRgDBydBzhcNMTEwMjAxMTUzMzQ2WjAAMCECDg35yJDL1jOPTgoHJ0HPFw0xMTAyMDExNTM0MjZaMAAwIQIOMyFJ6+e9iiGVBQcnQdAXDTA5MDkxODEzMjAwNVowADAhAg5Emb/Oykucmn8fBydB1xcNMDkwOTIxMTAxMDQ3WjAAMCECDjQKCncV+MnUavMHJ0HaFw0wOTA5MjIwODE1MjZaMAAwIQIOaxiFUt3dpd+tPwcnQfQXDTEwMDYxODA4NDI1MVowADAhAg5G7P8nO0tkrMt7BydB9RcNMTAwNjE4MDg0MjMwWjAAMCECDmTCC3SXhmDRst4HJ0H2Fw0wOTA5MjgxMjA3MjBaMAAwIQIOHoGhUr/pRwzTKgcnQfcXDTA5MDkyODEyMDcyNFowADAhAg50wrcrCiw8mQmPBydCBBcNMTAwMjE2MTMwMTA2WjAAMCECDifWmkvwyhEqwEcHJ0IFFw0xMDAyMTYxMzAxMjBaMAAwIQIOfgPmlW9fg+osNgcnQhwXDTEwMDQxMzA5NTIwMFowADAhAg4YHAGuA6LgCk7tBydCHRcNMTAwNDEzMDk1MTM4WjAAMCECDi1zH1bxkNJhokAHJ0IsFw0xMDA0MTMwOTU5MzBaMAAwIQIOMipNccsb/wo2fwcnQi0XDTEwMDQxMzA5NTkwMFowADAhAg46lCmvPl4GpP6ABydCShcNMTAwMTE5MDk1MjE3WjAAMCECDjaTcaj+wBpcGAsHJ0JLFw0xMDAxMTkwOTUyMzRaMAAwIQIOOMC13EOrBuxIOQcnQloXDTEwMDIwMTA5NDcwNVowADAhAg5KmZl+krz4RsmrBydCWxcNMTAwMjAxMDk0NjQwWjAAMCECDmLG3zQJ/fzdSsUHJ0JiFw0xMDAzMDEwOTUxNDBaMAAwIQIOP39ksgHdojf4owcnQmMXDTEwMDMwMTA5NTExN1owADAhAg4LDQzvWNRlD6v9BydCZBcNMTAwMzAxMDk0NjIyWjAAMCECDkmNfeclaFhIaaUHJ0JlFw0xMDAzMDEwOTQ2MDVaMAAwIQIOT/qWWfpH/m8NTwcnQpQXDTEwMDUxMTA5MTgyMVowADAhAg5m/ksYxvCEgJSvBydClRcNMTAwNTExMDkxODAxWjAAMCECDgvf3Ohq6JOPU9AHJ0KWFw0xMDA1MTEwOTIxMjNaMAAwIQIOKSPas10z4jNVIQcnQpcXDTEwMDUxMTA5MjEwMlowADAhAg4mCWmhoZ3lyKCDBydCohcNMTEwNDI4MTEwMjI1WjAAMCECDkeiyRsBMK0Gvr4HJ0KjFw0xMTA0MjgxMTAyMDdaMAAwIQIOa09b/nH2+55SSwcnQq4XDTExMDQwMTA4Mjk0NlowADAhAg5O7M7iq7gGplr1BydCrxcNMTEwNDAxMDgzMDE3WjAAMCECDjlT6mJxUjTvyogHJ0K1Fw0xMTAxMjcxNTQ4NTJaMAAwIQIODS/l4UUFLe21NAcnQrYXDTExMDEyNzE1NDgyOFowADAhAg5lPRA0XdOUF6lSBydDHhcNMTEwMTI4MTQzNTA1WjAAMCECDixKX4fFGGpENwgHJ0MfFw0xMTAxMjgxNDM1MzBaMAAwIQIORNBkqsPnpKTtbAcnQ08XDTEwMDkwOTA4NDg0MlowADAhAg5QL+EMM3lohedEBydDUBcNMTAwOTA5MDg0ODE5WjAAMCECDlhDnHK+HiTRAXcHJ0NUFw0xMDEwMTkxNjIxNDBaMAAwIQIOdBFqAzq/INz53gcnQ1UXDTEwMTAxOTE2MjA0NFowADAhAg4OjR7s8MgKles1BydDWhcNMTEwMTI3MTY1MzM2WjAAMCECDmfR/elHee+d0SoHJ0NbFw0xMTAxMjcxNjUzNTZaMAAwIQIOBTKv2ui+KFMI+wcnQ5YXDTEwMDkxNTEwMjE1N1owADAhAg49F3c/GSah+oRUBydDmxcNMTEwMTI3MTczMjMzWjAAMCECDggv4I61WwpKFMMHJ0OcFw0xMTAxMjcxNzMyNTVaMAAwIQIOXx/Y8sEvwS10LAcnQ6UXDTExMDEyODExMjkzN1owADAhAg5LSLbnVrSKaw/9BydDphcNMTEwMTI4MTEyOTIwWjAAMCECDmFFoCuhKUeACQQHJ0PfFw0xMTAxMTExMDE3MzdaMAAwIQIOQTDdFh2fSPF6AAcnQ+AXDTExMDExMTEwMTcxMFowADAhAg5B8AOXX61FpvbbBydD5RcNMTAxMDA2MTAxNDM2WjAAMCECDh41P2Gmi7PkwI4HJ0PmFw0xMDEwMDYxMDE2MjVaMAAwIQIOWUHGLQCd+Ale9gcnQ/0XDTExMDUwMjA3NTYxMFowADAhAg5Z2c9AYkikmgWOBydD/hcNMTEwNTAyMDc1NjM0WjAAMCECDmf/UD+/h8nf+74HJ0QVFw0xMTA0MTUwNzI4MzNaMAAwIQIOICvj4epy3MrqfwcnRBYXDTExMDQxNTA3Mjg1NlowADAhAg4bouRMfOYqgv4xBydEHxcNMTEwMzA4MTYyNDI1WjAAMCECDhebWHGoKiTp7pEHJ0QgFw0xMTAzMDgxNjI0NDhaMAAwIQIOX+qnxxAqJ8LtawcnRDcXDTExMDEzMTE1MTIyOFowADAhAg4j0fICqZ+wkOdqBydEOBcNMTEwMTMxMTUxMTQxWjAAMCECDhmXjsV4SUpWtAMHJ0RLFw0xMTAxMjgxMTI0MTJaMAAwIQIODno/w+zG43kkTwcnREwXDTExMDEyODExMjM1MlowADAhAg4b1gc88767Fr+LBydETxcNMTEwMTI4MTEwMjA4WjAAMCECDn+M3Pa1w2nyFeUHJ0RQFw0xMTAxMjgxMDU4NDVaMAAwIQIOaduoyIH61tqybAcnRJUXDTEwMTIxNTA5NDMyMlowADAhAg4nLqQPkyi3ESAKBydElhcNMTAxMjE1MDk0MzM2WjAAMCECDi504NIMH8578gQHJ0SbFw0xMTAyMTQxNDA1NDFaMAAwIQIOGuaM8PDaC5u1egcnRJwXDTExMDIxNDE0MDYwNFowADAhAg4ehYq/BXGnB5PWBydEnxcNMTEwMjA0MDgwOTUxWjAAMCECDkSD4eS4FxW5H20HJ0SgFw0xMTAyMDQwODA5MjVaMAAwIQIOOCcb6ilYObt1egcnRKEXDTExMDEyNjEwNDEyOVowADAhAg58tISWCCwFnKGnBydEohcNMTEwMjA0MDgxMzQyWjAAMCECDn5rjtabY/L/WL0HJ0TJFw0xMTAyMDQxMTAzNDFaMAAwDQYJKoZIhvcNAQEFBQADggEBAGnF2Gs0+LNiYCW1Ipm83OXQYP/bd5tFFRzyz3iepFqNfYs4D68/QihjFoRHQoXEB0OEe1tvaVnnPGnEOpi6krwekquMxo4H88B5SlyiFIqemCOIss0SxlCFs69LmfRYvPPvPEhoXtQ3ZThe0UvKG83GOklhvGl6OaiRf4Mt+m8zOT4Wox/j6aOBK6cw6qKCdmD+Yj1rrNqFGg1CnSWMoD6S6mwNgkzwdBUJZ22BwrzAAo4RHa2Uy3ef1FjwD0XtU5N3uDSxGGBEDvOe5z82rps3E22FpAA8eYl8kaXtmWqyvYU0epp4brGuTxCuBMCAsxt/OjIjeNNQbBGkwxgfYA0="
1605
1606const pemCRLBase64 = "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"
1607
1608func TestCreateCertificateRequest(t *testing.T) {
1609	random := rand.Reader
1610
1611	ecdsa256Priv, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
1612	if err != nil {
1613		t.Fatalf("Failed to generate ECDSA key: %s", err)
1614	}
1615
1616	ecdsa384Priv, err := ecdsa.GenerateKey(elliptic.P384(), rand.Reader)
1617	if err != nil {
1618		t.Fatalf("Failed to generate ECDSA key: %s", err)
1619	}
1620
1621	ecdsa521Priv, err := ecdsa.GenerateKey(elliptic.P521(), rand.Reader)
1622	if err != nil {
1623		t.Fatalf("Failed to generate ECDSA key: %s", err)
1624	}
1625
1626	tests := []struct {
1627		name    string
1628		priv    interface{}
1629		sigAlgo SignatureAlgorithm
1630	}{
1631		{"RSA", testPrivateKey, SHA1WithRSA},
1632		{"ECDSA-256", ecdsa256Priv, ECDSAWithSHA1},
1633		{"ECDSA-384", ecdsa384Priv, ECDSAWithSHA1},
1634		{"ECDSA-521", ecdsa521Priv, ECDSAWithSHA1},
1635	}
1636
1637	for _, test := range tests {
1638		template := CertificateRequest{
1639			Subject: pkix.Name{
1640				CommonName:   "test.example.com",
1641				Organization: []string{"Σ Acme Co"},
1642			},
1643			SignatureAlgorithm: test.sigAlgo,
1644			DNSNames:           []string{"test.example.com"},
1645			EmailAddresses:     []string{"gopher@golang.org"},
1646			IPAddresses:        []net.IP{net.IPv4(127, 0, 0, 1).To4(), net.ParseIP("2001:4860:0:2001::68")},
1647		}
1648
1649		derBytes, err := CreateCertificateRequest(random, &template, test.priv)
1650		if err != nil {
1651			t.Errorf("%s: failed to create certificate request: %s", test.name, err)
1652			continue
1653		}
1654
1655		out, err := ParseCertificateRequest(derBytes)
1656		if err != nil {
1657			t.Errorf("%s: failed to create certificate request: %s", test.name, err)
1658			continue
1659		}
1660
1661		err = out.CheckSignature()
1662		if err != nil {
1663			t.Errorf("%s: failed to check certificate request signature: %s", test.name, err)
1664			continue
1665		}
1666
1667		if out.Subject.CommonName != template.Subject.CommonName {
1668			t.Errorf("%s: output subject common name and template subject common name don't match", test.name)
1669		} else if len(out.Subject.Organization) != len(template.Subject.Organization) {
1670			t.Errorf("%s: output subject organisation and template subject organisation don't match", test.name)
1671		} else if len(out.DNSNames) != len(template.DNSNames) {
1672			t.Errorf("%s: output DNS names and template DNS names don't match", test.name)
1673		} else if len(out.EmailAddresses) != len(template.EmailAddresses) {
1674			t.Errorf("%s: output email addresses and template email addresses don't match", test.name)
1675		} else if len(out.IPAddresses) != len(template.IPAddresses) {
1676			t.Errorf("%s: output IP addresses and template IP addresses names don't match", test.name)
1677		}
1678	}
1679}
1680
1681func marshalAndParseCSR(t *testing.T, template *CertificateRequest) *CertificateRequest {
1682	derBytes, err := CreateCertificateRequest(rand.Reader, template, testPrivateKey)
1683	if err != nil {
1684		t.Fatal(err)
1685	}
1686
1687	csr, err := ParseCertificateRequest(derBytes)
1688	if err != nil {
1689		t.Fatal(err)
1690	}
1691
1692	return csr
1693}
1694
1695func TestCertificateRequestOverrides(t *testing.T) {
1696	sanContents, err := marshalSANs([]string{"foo.example.com"}, nil, nil, nil)
1697	if err != nil {
1698		t.Fatal(err)
1699	}
1700
1701	template := CertificateRequest{
1702		Subject: pkix.Name{
1703			CommonName:   "test.example.com",
1704			Organization: []string{"Σ Acme Co"},
1705		},
1706		DNSNames: []string{"test.example.com"},
1707
1708		// An explicit extension should override the DNSNames from the
1709		// template.
1710		ExtraExtensions: []pkix.Extension{
1711			{
1712				Id:    OIDExtensionSubjectAltName,
1713				Value: sanContents,
1714			},
1715		},
1716	}
1717
1718	csr := marshalAndParseCSR(t, &template)
1719
1720	if len(csr.DNSNames) != 1 || csr.DNSNames[0] != "foo.example.com" {
1721		t.Errorf("Extension did not override template. Got %v\n", csr.DNSNames)
1722	}
1723
1724	// If there is already an attribute with X.509 extensions then the
1725	// extra extensions should be added to it rather than creating a CSR
1726	// with two extension attributes.
1727
1728	template.Attributes = []pkix.AttributeTypeAndValueSET{
1729		{
1730			Type: oidExtensionRequest,
1731			Value: [][]pkix.AttributeTypeAndValue{
1732				{
1733					{
1734						Type:  OIDExtensionAuthorityInfoAccess,
1735						Value: []byte("foo"),
1736					},
1737				},
1738			},
1739		},
1740	}
1741
1742	csr = marshalAndParseCSR(t, &template)
1743	if l := len(csr.Attributes); l != 1 {
1744		t.Errorf("incorrect number of attributes: %d\n", l)
1745	}
1746
1747	if !csr.Attributes[0].Type.Equal(oidExtensionRequest) ||
1748		len(csr.Attributes[0].Value) != 1 ||
1749		len(csr.Attributes[0].Value[0]) != 2 {
1750		t.Errorf("bad attributes: %#v\n", csr.Attributes)
1751	}
1752
1753	sanContents2, err := marshalSANs([]string{"foo2.example.com"}, nil, nil, nil)
1754	if err != nil {
1755		t.Fatal(err)
1756	}
1757
1758	// Extensions in Attributes should override those in ExtraExtensions.
1759	template.Attributes[0].Value[0] = append(template.Attributes[0].Value[0], pkix.AttributeTypeAndValue{
1760		Type:  OIDExtensionSubjectAltName,
1761		Value: sanContents2,
1762	})
1763
1764	csr = marshalAndParseCSR(t, &template)
1765
1766	if len(csr.DNSNames) != 1 || csr.DNSNames[0] != "foo2.example.com" {
1767		t.Errorf("Attributes did not override ExtraExtensions. Got %v\n", csr.DNSNames)
1768	}
1769}
1770
1771func TestParseCertificateRequest(t *testing.T) {
1772	for _, csrBase64 := range csrBase64Array {
1773		csrBytes := fromBase64(csrBase64)
1774		csr, err := ParseCertificateRequest(csrBytes)
1775		if err != nil {
1776			t.Fatalf("failed to parse CSR: %s", err)
1777		}
1778
1779		if len(csr.EmailAddresses) != 1 || csr.EmailAddresses[0] != "gopher@golang.org" {
1780			t.Errorf("incorrect email addresses found: %v", csr.EmailAddresses)
1781		}
1782
1783		if len(csr.DNSNames) != 1 || csr.DNSNames[0] != "test.example.com" {
1784			t.Errorf("incorrect DNS names found: %v", csr.DNSNames)
1785		}
1786
1787		if len(csr.Subject.Country) != 1 || csr.Subject.Country[0] != "AU" {
1788			t.Errorf("incorrect Subject name: %v", csr.Subject)
1789		}
1790
1791		found := false
1792		for _, e := range csr.Extensions {
1793			if e.Id.Equal(OIDExtensionBasicConstraints) {
1794				found = true
1795				break
1796			}
1797		}
1798		if !found {
1799			t.Errorf("basic constraints extension not found in CSR")
1800		}
1801	}
1802}
1803
1804func TestCriticalFlagInCSRRequestedExtensions(t *testing.T) {
1805	// This CSR contains an extension request where the extensions have a
1806	// critical flag in them. In the past we failed to handle this.
1807	const csrBase64 = "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"
1808
1809	csrBytes := fromBase64(csrBase64)
1810	csr, err := ParseCertificateRequest(csrBytes)
1811	if err != nil {
1812		t.Fatalf("failed to parse CSR: %s", err)
1813	}
1814
1815	expected := []struct {
1816		Id    asn1.ObjectIdentifier
1817		Value []byte
1818	}{
1819		{OIDExtensionBasicConstraints, fromBase64("MAYBAf8CAQA=")},
1820		{OIDExtensionKeyUsage, fromBase64("AwIChA==")},
1821	}
1822
1823	if n := len(csr.Extensions); n != len(expected) {
1824		t.Fatalf("expected to find %d extensions but found %d", len(expected), n)
1825	}
1826
1827	for i, extension := range csr.Extensions {
1828		if !extension.Id.Equal(expected[i].Id) {
1829			t.Fatalf("extension #%d has unexpected type %v (expected %v)", i, extension.Id, expected[i].Id)
1830		}
1831
1832		if !bytes.Equal(extension.Value, expected[i].Value) {
1833			t.Fatalf("extension #%d has unexpected contents %x (expected %x)", i, extension.Value, expected[i].Value)
1834		}
1835	}
1836}
1837
1838// serialiseAndParse generates a self-signed certificate from template and
1839// returns a parsed version of it.
1840func serialiseAndParse(t *testing.T, template *Certificate) *Certificate {
1841	derBytes, err := CreateCertificate(rand.Reader, template, template, &testPrivateKey.PublicKey, testPrivateKey)
1842	if err != nil {
1843		t.Fatalf("failed to create certificate: %s", err)
1844		return nil
1845	}
1846
1847	cert, err := ParseCertificate(derBytes)
1848	if err != nil {
1849		t.Fatalf("failed to parse certificate: %s", err)
1850		return nil
1851	}
1852
1853	return cert
1854}
1855
1856func TestMaxPathLen(t *testing.T) {
1857	template := &Certificate{
1858		SerialNumber: big.NewInt(1),
1859		Subject: pkix.Name{
1860			CommonName: "Σ Acme Co",
1861		},
1862		NotBefore: time.Unix(1000, 0),
1863		NotAfter:  time.Unix(100000, 0),
1864
1865		BasicConstraintsValid: true,
1866		IsCA: true,
1867	}
1868
1869	cert1 := serialiseAndParse(t, template)
1870	if m := cert1.MaxPathLen; m != -1 {
1871		t.Errorf("Omitting MaxPathLen didn't turn into -1, got %d", m)
1872	}
1873	if cert1.MaxPathLenZero {
1874		t.Errorf("Omitting MaxPathLen resulted in MaxPathLenZero")
1875	}
1876
1877	template.MaxPathLen = 1
1878	cert2 := serialiseAndParse(t, template)
1879	if m := cert2.MaxPathLen; m != 1 {
1880		t.Errorf("Setting MaxPathLen didn't work. Got %d but set 1", m)
1881	}
1882	if cert2.MaxPathLenZero {
1883		t.Errorf("Setting MaxPathLen resulted in MaxPathLenZero")
1884	}
1885
1886	template.MaxPathLen = 0
1887	template.MaxPathLenZero = true
1888	cert3 := serialiseAndParse(t, template)
1889	if m := cert3.MaxPathLen; m != 0 {
1890		t.Errorf("Setting MaxPathLenZero didn't work, got %d", m)
1891	}
1892	if !cert3.MaxPathLenZero {
1893		t.Errorf("Setting MaxPathLen to zero didn't result in MaxPathLenZero")
1894	}
1895}
1896
1897func TestNoAuthorityKeyIdInSelfSignedCert(t *testing.T) {
1898	template := &Certificate{
1899		SerialNumber: big.NewInt(1),
1900		Subject: pkix.Name{
1901			CommonName: "Σ Acme Co",
1902		},
1903		NotBefore: time.Unix(1000, 0),
1904		NotAfter:  time.Unix(100000, 0),
1905
1906		BasicConstraintsValid: true,
1907		IsCA:         true,
1908		SubjectKeyId: []byte{1, 2, 3, 4},
1909	}
1910
1911	if cert := serialiseAndParse(t, template); len(cert.AuthorityKeyId) != 0 {
1912		t.Fatalf("self-signed certificate contained default authority key id")
1913	}
1914
1915	template.AuthorityKeyId = []byte{1, 2, 3, 4}
1916	if cert := serialiseAndParse(t, template); len(cert.AuthorityKeyId) == 0 {
1917		t.Fatalf("self-signed certificate erased explicit authority key id")
1918	}
1919}
1920
1921func TestASN1BitLength(t *testing.T) {
1922	tests := []struct {
1923		bytes  []byte
1924		bitLen int
1925	}{
1926		{nil, 0},
1927		{[]byte{0x00}, 0},
1928		{[]byte{0x00, 0x00}, 0},
1929		{[]byte{0xf0}, 4},
1930		{[]byte{0x88}, 5},
1931		{[]byte{0xff}, 8},
1932		{[]byte{0xff, 0x80}, 9},
1933		{[]byte{0xff, 0x81}, 16},
1934	}
1935
1936	for i, test := range tests {
1937		if got := asn1BitLength(test.bytes); got != test.bitLen {
1938			t.Errorf("#%d: calculated bit-length of %d for %x, wanted %d", i, got, test.bytes, test.bitLen)
1939		}
1940	}
1941}
1942
1943func TestVerifyEmptyCertificate(t *testing.T) {
1944	if _, err := new(Certificate).Verify(VerifyOptions{}); err != errNotParsed {
1945		t.Errorf("Verifying empty certificate resulted in unexpected error: %q (wanted %q)", err, errNotParsed)
1946	}
1947}
1948
1949func TestInsecureAlgorithmErrorString(t *testing.T) {
1950	tests := []struct {
1951		sa   SignatureAlgorithm
1952		want string
1953	}{
1954		{MD2WithRSA, "x509: cannot verify signature: insecure algorithm MD2-RSA"},
1955		{-1, "x509: cannot verify signature: insecure algorithm -1"},
1956		{0, "x509: cannot verify signature: insecure algorithm 0"},
1957		{9999, "x509: cannot verify signature: insecure algorithm 9999"},
1958	}
1959	for i, tt := range tests {
1960		if got := fmt.Sprint(InsecureAlgorithmError(tt.sa)); got != tt.want {
1961			t.Errorf("%d. mismatch.\n got: %s\nwant: %s\n", i, got, tt.want)
1962		}
1963	}
1964}
1965
1966// These CSR was generated with OpenSSL:
1967//  openssl req -out CSR.csr -new -sha256 -nodes -keyout privateKey.key -config openssl.cnf
1968//
1969// With openssl.cnf containing the following sections:
1970//   [ v3_req ]
1971//   basicConstraints = CA:FALSE
1972//   keyUsage = nonRepudiation, digitalSignature, keyEncipherment
1973//   subjectAltName = email:gopher@golang.org,DNS:test.example.com
1974//   [ req_attributes ]
1975//   challengePassword = ignored challenge
1976//   unstructuredName  = ignored unstructured name
1977var csrBase64Array = [...]string{
1978	// Just [ v3_req ]
1979	"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",
1980	// Both [ v3_req ] and [ req_attributes ]
1981	"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",
1982}
1983
1984var md5cert = `
1985-----BEGIN CERTIFICATE-----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1997-----END CERTIFICATE-----
1998`
1999
2000func TestMD5(t *testing.T) {
2001	pemBlock, _ := pem.Decode([]byte(md5cert))
2002	cert, err := ParseCertificate(pemBlock.Bytes)
2003	if err != nil {
2004		t.Fatalf("failed to parse certificate: %s", err)
2005	}
2006	if sa := cert.SignatureAlgorithm; sa != MD5WithRSA {
2007		t.Errorf("signature algorithm is %v, want %v", sa, MD5WithRSA)
2008	}
2009	if err = cert.CheckSignatureFrom(cert); err == nil {
2010		t.Fatalf("certificate verification succeeded incorrectly")
2011	}
2012	if _, ok := err.(InsecureAlgorithmError); !ok {
2013		t.Fatalf("certificate verification returned %v (%T), wanted InsecureAlgorithmError", err, err)
2014	}
2015}
2016
2017// certMissingRSANULL contains an RSA public key where the AlgorithmIdentifer
2018// parameters are omitted rather than being an ASN.1 NULL.
2019const certMissingRSANULL = `
2020-----BEGIN CERTIFICATE-----
2021MIIB7TCCAVigAwIBAgIBADALBgkqhkiG9w0BAQUwJjEQMA4GA1UEChMHQWNtZSBD
2022bzESMBAGA1UEAxMJMTI3LjAuMC4xMB4XDTExMTIwODA3NTUxMloXDTEyMTIwNzA4
2023MDAxMlowJjEQMA4GA1UEChMHQWNtZSBDbzESMBAGA1UEAxMJMTI3LjAuMC4xMIGc
2024MAsGCSqGSIb3DQEBAQOBjAAwgYgCgYBO0Hsx44Jk2VnAwoekXh6LczPHY1PfZpIG
2025hPZk1Y/kNqcdK+izIDZFI7Xjla7t4PUgnI2V339aEu+H5Fto5OkOdOwEin/ekyfE
2026ARl6vfLcPRSr0FTKIQzQTW6HLlzF0rtNS0/Otiz3fojsfNcCkXSmHgwa2uNKWi7e
2027E5xMQIhZkwIDAQABozIwMDAOBgNVHQ8BAf8EBAMCAKAwDQYDVR0OBAYEBAECAwQw
2028DwYDVR0jBAgwBoAEAQIDBDALBgkqhkiG9w0BAQUDgYEANh+zegx1yW43RmEr1b3A
2029p0vMRpqBWHyFeSnIyMZn3TJWRSt1tukkqVCavh9a+hoV2cxVlXIWg7nCto/9iIw4
2030hB2rXZIxE0/9gzvGnfERYraL7KtnvshksBFQRlgXa5kc0x38BvEO5ZaoDPl4ILdE
2031GFGNEH5PlGffo05wc46QkYU=
2032-----END CERTIFICATE-----`
2033
2034func TestRSAMissingNULLParameters(t *testing.T) {
2035	block, _ := pem.Decode([]byte(certMissingRSANULL))
2036	if _, err := ParseCertificate(block.Bytes); err == nil {
2037		t.Error("unexpected success when parsing certificate with missing RSA NULL parameter")
2038	} else if !strings.Contains(err.Error(), "missing NULL") {
2039		t.Errorf("unrecognised error when parsing certificate with missing RSA NULL parameter: %s", err)
2040	}
2041}
2042
2043const certISOOID = `
2044-----BEGIN CERTIFICATE-----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2056-----END CERTIFICATE-----`
2057
2058func TestISOOIDInCertificate(t *testing.T) {
2059	block, _ := pem.Decode([]byte(certISOOID))
2060	if cert, err := ParseCertificate(block.Bytes); err != nil {
2061		t.Errorf("certificate with ISO OID failed to parse: %s", err)
2062	} else if cert.SignatureAlgorithm == UnknownSignatureAlgorithm {
2063		t.Errorf("ISO OID not recognised in certificate")
2064	}
2065}
2066
2067// certMultipleRDN contains a RelativeDistinguishedName with two elements (the
2068// common name and serial number). This particular certificate was the first
2069// such certificate in the “Pilot” Certificate Transparency log.
2070const certMultipleRDN = `
2071-----BEGIN CERTIFICATE-----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2101-----END CERTIFICATE-----`
2102
2103func TestMultipleRDN(t *testing.T) {
2104	block, _ := pem.Decode([]byte(certMultipleRDN))
2105	cert, err := ParseCertificate(block.Bytes)
2106	if err != nil {
2107		t.Fatalf("certificate with two elements in an RDN failed to parse: %v", err)
2108	}
2109
2110	if want := "eportal.mss.edus.si"; cert.Subject.CommonName != want {
2111		t.Errorf("got common name of %q, but want %q", cert.Subject.CommonName, want)
2112	}
2113
2114	if want := "1236484010010"; cert.Subject.SerialNumber != want {
2115		t.Errorf("got serial number of %q, but want %q", cert.Subject.SerialNumber, want)
2116	}
2117}
2118
2119func TestSystemCertPool(t *testing.T) {
2120	if runtime.GOOS == "windows" {
2121		t.Skip("not implemented on Windows; Issue 16736, 18609")
2122	}
2123	_, err := SystemCertPool()
2124	if err != nil {
2125		t.Fatal(err)
2126	}
2127}
2128
2129const emptyNameConstraintsPEM = `
2130-----BEGIN CERTIFICATE-----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2147-----END CERTIFICATE-----`
2148
2149func TestEmptyNameConstraints(t *testing.T) {
2150	block, _ := pem.Decode([]byte(emptyNameConstraintsPEM))
2151	_, err := ParseCertificate(block.Bytes)
2152	if err == nil {
2153		t.Fatal("unexpected success")
2154	}
2155
2156	const expected = "empty name constraints"
2157	if str := err.Error(); !strings.Contains(str, expected) {
2158		t.Errorf("expected %q in error but got %q", expected, str)
2159	}
2160}
2161
2162func TestPKIXNameString(t *testing.T) {
2163	pem, err := hex.DecodeString(certBytes)
2164	if err != nil {
2165		t.Fatal(err)
2166	}
2167	certs, err := ParseCertificates(pem)
2168	if IsFatal(err) {
2169		t.Fatal(err)
2170	}
2171
2172	tests := []struct {
2173		dn   pkix.Name
2174		want string
2175	}{
2176		{pkix.Name{
2177			CommonName:         "Steve Kille",
2178			Organization:       []string{"Isode Limited"},
2179			OrganizationalUnit: []string{"RFCs"},
2180			Locality:           []string{"Richmond"},
2181			Province:           []string{"Surrey"},
2182			StreetAddress:      []string{"The Square"},
2183			PostalCode:         []string{"TW9 1DT"},
2184			SerialNumber:       "RFC 2253",
2185			Country:            []string{"GB"},
2186		}, "SERIALNUMBER=RFC 2253,CN=Steve Kille,OU=RFCs,O=Isode Limited,POSTALCODE=TW9 1DT,STREET=The Square,L=Richmond,ST=Surrey,C=GB"},
2187		{certs[0].Subject,
2188			"CN=mail.google.com,O=Google Inc,L=Mountain View,ST=California,C=US"},
2189		{pkix.Name{
2190			Organization: []string{"#Google, Inc. \n-> 'Alphabet\" "},
2191			Country:      []string{"US"},
2192		}, "O=\\#Google\\, Inc. \n-\\> 'Alphabet\\\"\\ ,C=US"},
2193		{pkix.Name{
2194			CommonName:   "foo.com",
2195			Organization: []string{"Gopher Industries"},
2196			ExtraNames: []pkix.AttributeTypeAndValue{
2197				{Type: asn1.ObjectIdentifier([]int{2, 5, 4, 3}), Value: "bar.com"}},
2198		}, "CN=bar.com,O=Gopher Industries"},
2199		{pkix.Name{
2200			Locality: []string{"Gophertown"},
2201			ExtraNames: []pkix.AttributeTypeAndValue{
2202				{Type: asn1.ObjectIdentifier([]int{1, 2, 3, 4, 5}), Value: "golang.org"}},
2203		}, "1.2.3.4.5=#130a676f6c616e672e6f7267,L=Gophertown"},
2204	}
2205
2206	for i, test := range tests {
2207		if got := test.dn.String(); got != test.want {
2208			t.Errorf("#%d: String() = \n%s\n, want \n%s", i, got, test.want)
2209		}
2210	}
2211}
2212
2213func TestRDNSequenceString(t *testing.T) {
2214	// Test some extra cases that get lost in pkix.Name conversions such as
2215	// multi-valued attributes.
2216
2217	var (
2218		oidCountry            = []int{2, 5, 4, 6}
2219		oidOrganization       = []int{2, 5, 4, 10}
2220		oidOrganizationalUnit = []int{2, 5, 4, 11}
2221		oidCommonName         = []int{2, 5, 4, 3}
2222	)
2223
2224	tests := []struct {
2225		seq  pkix.RDNSequence
2226		want string
2227	}{
2228		{
2229			seq: pkix.RDNSequence{
2230				pkix.RelativeDistinguishedNameSET{
2231					pkix.AttributeTypeAndValue{Type: oidCountry, Value: "US"},
2232				},
2233				pkix.RelativeDistinguishedNameSET{
2234					pkix.AttributeTypeAndValue{Type: oidOrganization, Value: "Widget Inc."},
2235				},
2236				pkix.RelativeDistinguishedNameSET{
2237					pkix.AttributeTypeAndValue{Type: oidOrganizationalUnit, Value: "Sales"},
2238					pkix.AttributeTypeAndValue{Type: oidCommonName, Value: "J. Smith"},
2239				},
2240			},
2241			want: "OU=Sales+CN=J. Smith,O=Widget Inc.,C=US",
2242		},
2243	}
2244
2245	for i, test := range tests {
2246		if got := test.seq.String(); got != test.want {
2247			t.Errorf("#%d: String() = \n%s\n, want \n%s", i, got, test.want)
2248		}
2249	}
2250}
2251
2252const criticalNameConstraintWithUnknownTypePEM = `
2253-----BEGIN CERTIFICATE-----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2271-----END CERTIFICATE-----`
2272
2273func TestCriticalNameConstraintWithUnknownType(t *testing.T) {
2274	block, _ := pem.Decode([]byte(criticalNameConstraintWithUnknownTypePEM))
2275	cert, err := ParseCertificate(block.Bytes)
2276	if err != nil {
2277		t.Fatalf("unexpected parsing failure: %s", err)
2278	}
2279
2280	if l := len(cert.UnhandledCriticalExtensions); l != 1 {
2281		t.Fatalf("expected one unhandled critical extension, but found %d", l)
2282	}
2283}
2284
2285const badIPMaskPEM = `
2286-----BEGIN CERTIFICATE-----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2303-----END CERTIFICATE-----`
2304
2305func TestBadIPMask(t *testing.T) {
2306	block, _ := pem.Decode([]byte(badIPMaskPEM))
2307	_, err := ParseCertificate(block.Bytes)
2308	if err == nil {
2309		t.Fatalf("unexpected success")
2310	}
2311
2312	const expected = "contained invalid mask"
2313	if !strings.Contains(err.Error(), expected) {
2314		t.Fatalf("expected %q in error but got: %s", expected, err)
2315	}
2316}
2317
2318const additionalGeneralSubtreePEM = `
2319-----BEGIN CERTIFICATE-----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2357-----END CERTIFICATE-----`
2358
2359func TestAdditionFieldsInGeneralSubtree(t *testing.T) {
2360	// Very rarely, certificates can include additional fields in the
2361	// GeneralSubtree structure. This tests that such certificates can be
2362	// parsed.
2363	block, _ := pem.Decode([]byte(additionalGeneralSubtreePEM))
2364	if _, err := ParseCertificate(block.Bytes); IsFatal(err) {
2365		t.Fatalf("failed to parse certificate: %s", err)
2366	}
2367}
2368
2369func TestEmptySubject(t *testing.T) {
2370	template := Certificate{
2371		SerialNumber: big.NewInt(1),
2372		DNSNames:     []string{"example.com"},
2373	}
2374
2375	derBytes, err := CreateCertificate(rand.Reader, &template, &template, &testPrivateKey.PublicKey, testPrivateKey)
2376	if err != nil {
2377		t.Fatalf("failed to create certificate: %s", err)
2378	}
2379
2380	cert, err := ParseCertificate(derBytes)
2381	if err != nil {
2382		t.Fatalf("failed to parse certificate: %s", err)
2383	}
2384
2385	for _, ext := range cert.Extensions {
2386		if ext.Id.Equal(OIDExtensionSubjectAltName) {
2387			if !ext.Critical {
2388				t.Fatal("SAN extension is not critical")
2389			}
2390			return
2391		}
2392	}
2393
2394	t.Fatal("SAN extension is missing")
2395}
2396
2397// multipleURLsInCRLDPPEM contains two URLs in a single CRL DistributionPoint
2398// structure. It is taken from https://crt.sh/?id=12721534.
2399const multipleURLsInCRLDPPEM = `
2400-----BEGIN CERTIFICATE-----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2433-----END CERTIFICATE-----
2434`
2435
2436func TestMultipleURLsInCRLDP(t *testing.T) {
2437	block, _ := pem.Decode([]byte(multipleURLsInCRLDPPEM))
2438	cert, err := ParseCertificate(block.Bytes)
2439	if err != nil {
2440		t.Fatalf("failed to parse certificate: %s", err)
2441	}
2442
2443	want := []string{
2444		"http://epscd.catcert.net/crl/ec-acc.crl",
2445		"http://epscd2.catcert.net/crl/ec-acc.crl",
2446	}
2447	if got := cert.CRLDistributionPoints; !reflect.DeepEqual(got, want) {
2448		t.Errorf("CRL distribution points = %#v, want #%v", got, want)
2449	}
2450}
2451
2452func TestParseCertificateFail(t *testing.T) {
2453	var tests = []struct {
2454		desc    string
2455		in      string
2456		wantErr string
2457	}{
2458		{desc: "SubjectInfoEmpty", in: "testdata/invalid/xf-ext-subject-info-empty.pem", wantErr: "empty SubjectInfoAccess"},
2459		{desc: "RSAParamsNonNULL", in: "testdata/invalid/xf-pubkey-rsa-param-nonnull.pem", wantErr: "RSA key missing NULL parameters"},
2460		{desc: "EmptyEKU", in: "testdata/invalid/xf-ext-extended-key-usage-empty.pem", wantErr: "empty ExtendedKeyUsage"},
2461		{desc: "SECp192r1TooShort", in: "testdata/invalid/xf-pubkey-ecdsa-secp192r1.pem", wantErr: "insecure curve (secp192r1)"},
2462	}
2463	for _, test := range tests {
2464		t.Run(test.desc, func(t *testing.T) {
2465			data, err := ioutil.ReadFile(test.in)
2466			if err != nil {
2467				t.Fatalf("failed to read test data: %v", err)
2468			}
2469			block, _ := pem.Decode(data)
2470			got, err := ParseCertificate(block.Bytes)
2471			if err == nil {
2472				t.Fatalf("ParseCertificate()=%+v,nil; want nil, err containing %q", got, test.wantErr)
2473			}
2474			if !strings.Contains(err.Error(), test.wantErr) {
2475				t.Fatalf("ParseCertificate()=_,%v; want nil, err containing %q", err, test.wantErr)
2476			}
2477		})
2478	}
2479}
2480