1 /* SHA512 module */
2
3 /* This module provides an interface to NIST's SHA-512 and SHA-384 Algorithms */
4
5 /* See below for information about the original code this module was
6 based upon. Additional work performed by:
7
8 Andrew Kuchling (amk@amk.ca)
9 Greg Stein (gstein@lyra.org)
10 Trevor Perrin (trevp@trevp.net)
11
12 Copyright (C) 2005-2007 Gregory P. Smith (greg@krypto.org)
13 Licensed to PSF under a Contributor Agreement.
14
15 */
16
17 /* SHA objects */
18
19 #include "Python.h"
20 #include "structmember.h"
21 #include "hashlib.h"
22 #include "pystrhex.h"
23
24 /*[clinic input]
25 module _sha512
26 class SHA512Type "SHAobject *" "&PyType_Type"
27 [clinic start generated code]*/
28 /*[clinic end generated code: output=da39a3ee5e6b4b0d input=81a3ccde92bcfe8d]*/
29
30 /* Some useful types */
31
32 typedef unsigned char SHA_BYTE;
33
34 #if SIZEOF_INT == 4
35 typedef unsigned int SHA_INT32; /* 32-bit integer */
36 typedef unsigned long long SHA_INT64; /* 64-bit integer */
37 #else
38 /* not defined. compilation will die. */
39 #endif
40
41 /* The SHA block size and message digest sizes, in bytes */
42
43 #define SHA_BLOCKSIZE 128
44 #define SHA_DIGESTSIZE 64
45
46 /* The structure for storing SHA info */
47
48 typedef struct {
49 PyObject_HEAD
50 SHA_INT64 digest[8]; /* Message digest */
51 SHA_INT32 count_lo, count_hi; /* 64-bit bit count */
52 SHA_BYTE data[SHA_BLOCKSIZE]; /* SHA data buffer */
53 int local; /* unprocessed amount in data */
54 int digestsize;
55 } SHAobject;
56
57 #include "clinic/sha512module.c.h"
58
59 /* When run on a little-endian CPU we need to perform byte reversal on an
60 array of longwords. */
61
62 #if PY_LITTLE_ENDIAN
longReverse(SHA_INT64 * buffer,int byteCount)63 static void longReverse(SHA_INT64 *buffer, int byteCount)
64 {
65 SHA_INT64 value;
66
67 byteCount /= sizeof(*buffer);
68 while (byteCount--) {
69 value = *buffer;
70
71 ((unsigned char*)buffer)[0] = (unsigned char)(value >> 56) & 0xff;
72 ((unsigned char*)buffer)[1] = (unsigned char)(value >> 48) & 0xff;
73 ((unsigned char*)buffer)[2] = (unsigned char)(value >> 40) & 0xff;
74 ((unsigned char*)buffer)[3] = (unsigned char)(value >> 32) & 0xff;
75 ((unsigned char*)buffer)[4] = (unsigned char)(value >> 24) & 0xff;
76 ((unsigned char*)buffer)[5] = (unsigned char)(value >> 16) & 0xff;
77 ((unsigned char*)buffer)[6] = (unsigned char)(value >> 8) & 0xff;
78 ((unsigned char*)buffer)[7] = (unsigned char)(value ) & 0xff;
79
80 buffer++;
81 }
82 }
83 #endif
84
SHAcopy(SHAobject * src,SHAobject * dest)85 static void SHAcopy(SHAobject *src, SHAobject *dest)
86 {
87 dest->local = src->local;
88 dest->digestsize = src->digestsize;
89 dest->count_lo = src->count_lo;
90 dest->count_hi = src->count_hi;
91 memcpy(dest->digest, src->digest, sizeof(src->digest));
92 memcpy(dest->data, src->data, sizeof(src->data));
93 }
94
95
96 /* ------------------------------------------------------------------------
97 *
98 * This code for the SHA-512 algorithm was noted as public domain. The
99 * original headers are pasted below.
100 *
101 * Several changes have been made to make it more compatible with the
102 * Python environment and desired interface.
103 *
104 */
105
106 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
107 *
108 * LibTomCrypt is a library that provides various cryptographic
109 * algorithms in a highly modular and flexible manner.
110 *
111 * The library is free for all purposes without any express
112 * guarantee it works.
113 *
114 * Tom St Denis, tomstdenis@iahu.ca, https://www.libtom.net
115 */
116
117
118 /* SHA512 by Tom St Denis */
119
120 /* Various logical functions */
121 #define ROR64(x, y) \
122 ( ((((x) & 0xFFFFFFFFFFFFFFFFULL)>>((unsigned long long)(y) & 63)) | \
123 ((x)<<((unsigned long long)(64-((y) & 63))))) & 0xFFFFFFFFFFFFFFFFULL)
124 #define Ch(x,y,z) (z ^ (x & (y ^ z)))
125 #define Maj(x,y,z) (((x | y) & z) | (x & y))
126 #define S(x, n) ROR64((x),(n))
127 #define R(x, n) (((x) & 0xFFFFFFFFFFFFFFFFULL) >> ((unsigned long long)n))
128 #define Sigma0(x) (S(x, 28) ^ S(x, 34) ^ S(x, 39))
129 #define Sigma1(x) (S(x, 14) ^ S(x, 18) ^ S(x, 41))
130 #define Gamma0(x) (S(x, 1) ^ S(x, 8) ^ R(x, 7))
131 #define Gamma1(x) (S(x, 19) ^ S(x, 61) ^ R(x, 6))
132
133
134 static void
sha512_transform(SHAobject * sha_info)135 sha512_transform(SHAobject *sha_info)
136 {
137 int i;
138 SHA_INT64 S[8], W[80], t0, t1;
139
140 memcpy(W, sha_info->data, sizeof(sha_info->data));
141 #if PY_LITTLE_ENDIAN
142 longReverse(W, (int)sizeof(sha_info->data));
143 #endif
144
145 for (i = 16; i < 80; ++i) {
146 W[i] = Gamma1(W[i - 2]) + W[i - 7] + Gamma0(W[i - 15]) + W[i - 16];
147 }
148 for (i = 0; i < 8; ++i) {
149 S[i] = sha_info->digest[i];
150 }
151
152 /* Compress */
153 #define RND(a,b,c,d,e,f,g,h,i,ki) \
154 t0 = h + Sigma1(e) + Ch(e, f, g) + ki + W[i]; \
155 t1 = Sigma0(a) + Maj(a, b, c); \
156 d += t0; \
157 h = t0 + t1;
158
159 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],0,0x428a2f98d728ae22ULL);
160 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],1,0x7137449123ef65cdULL);
161 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],2,0xb5c0fbcfec4d3b2fULL);
162 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],3,0xe9b5dba58189dbbcULL);
163 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],4,0x3956c25bf348b538ULL);
164 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],5,0x59f111f1b605d019ULL);
165 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],6,0x923f82a4af194f9bULL);
166 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],7,0xab1c5ed5da6d8118ULL);
167 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],8,0xd807aa98a3030242ULL);
168 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],9,0x12835b0145706fbeULL);
169 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],10,0x243185be4ee4b28cULL);
170 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],11,0x550c7dc3d5ffb4e2ULL);
171 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],12,0x72be5d74f27b896fULL);
172 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],13,0x80deb1fe3b1696b1ULL);
173 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],14,0x9bdc06a725c71235ULL);
174 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],15,0xc19bf174cf692694ULL);
175 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],16,0xe49b69c19ef14ad2ULL);
176 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],17,0xefbe4786384f25e3ULL);
177 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],18,0x0fc19dc68b8cd5b5ULL);
178 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],19,0x240ca1cc77ac9c65ULL);
179 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],20,0x2de92c6f592b0275ULL);
180 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],21,0x4a7484aa6ea6e483ULL);
181 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],22,0x5cb0a9dcbd41fbd4ULL);
182 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],23,0x76f988da831153b5ULL);
183 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],24,0x983e5152ee66dfabULL);
184 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],25,0xa831c66d2db43210ULL);
185 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],26,0xb00327c898fb213fULL);
186 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],27,0xbf597fc7beef0ee4ULL);
187 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],28,0xc6e00bf33da88fc2ULL);
188 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],29,0xd5a79147930aa725ULL);
189 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],30,0x06ca6351e003826fULL);
190 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],31,0x142929670a0e6e70ULL);
191 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],32,0x27b70a8546d22ffcULL);
192 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],33,0x2e1b21385c26c926ULL);
193 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],34,0x4d2c6dfc5ac42aedULL);
194 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],35,0x53380d139d95b3dfULL);
195 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],36,0x650a73548baf63deULL);
196 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],37,0x766a0abb3c77b2a8ULL);
197 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],38,0x81c2c92e47edaee6ULL);
198 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],39,0x92722c851482353bULL);
199 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],40,0xa2bfe8a14cf10364ULL);
200 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],41,0xa81a664bbc423001ULL);
201 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],42,0xc24b8b70d0f89791ULL);
202 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],43,0xc76c51a30654be30ULL);
203 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],44,0xd192e819d6ef5218ULL);
204 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],45,0xd69906245565a910ULL);
205 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],46,0xf40e35855771202aULL);
206 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],47,0x106aa07032bbd1b8ULL);
207 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],48,0x19a4c116b8d2d0c8ULL);
208 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],49,0x1e376c085141ab53ULL);
209 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],50,0x2748774cdf8eeb99ULL);
210 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],51,0x34b0bcb5e19b48a8ULL);
211 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],52,0x391c0cb3c5c95a63ULL);
212 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],53,0x4ed8aa4ae3418acbULL);
213 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],54,0x5b9cca4f7763e373ULL);
214 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],55,0x682e6ff3d6b2b8a3ULL);
215 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],56,0x748f82ee5defb2fcULL);
216 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],57,0x78a5636f43172f60ULL);
217 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],58,0x84c87814a1f0ab72ULL);
218 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],59,0x8cc702081a6439ecULL);
219 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],60,0x90befffa23631e28ULL);
220 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],61,0xa4506cebde82bde9ULL);
221 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],62,0xbef9a3f7b2c67915ULL);
222 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],63,0xc67178f2e372532bULL);
223 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],64,0xca273eceea26619cULL);
224 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],65,0xd186b8c721c0c207ULL);
225 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],66,0xeada7dd6cde0eb1eULL);
226 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],67,0xf57d4f7fee6ed178ULL);
227 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],68,0x06f067aa72176fbaULL);
228 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],69,0x0a637dc5a2c898a6ULL);
229 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],70,0x113f9804bef90daeULL);
230 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],71,0x1b710b35131c471bULL);
231 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],72,0x28db77f523047d84ULL);
232 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],73,0x32caab7b40c72493ULL);
233 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],74,0x3c9ebe0a15c9bebcULL);
234 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],75,0x431d67c49c100d4cULL);
235 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],76,0x4cc5d4becb3e42b6ULL);
236 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],77,0x597f299cfc657e2aULL);
237 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],78,0x5fcb6fab3ad6faecULL);
238 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],79,0x6c44198c4a475817ULL);
239
240 #undef RND
241
242 /* feedback */
243 for (i = 0; i < 8; i++) {
244 sha_info->digest[i] = sha_info->digest[i] + S[i];
245 }
246
247 }
248
249
250
251 /* initialize the SHA digest */
252
253 static void
sha512_init(SHAobject * sha_info)254 sha512_init(SHAobject *sha_info)
255 {
256 sha_info->digest[0] = Py_ULL(0x6a09e667f3bcc908);
257 sha_info->digest[1] = Py_ULL(0xbb67ae8584caa73b);
258 sha_info->digest[2] = Py_ULL(0x3c6ef372fe94f82b);
259 sha_info->digest[3] = Py_ULL(0xa54ff53a5f1d36f1);
260 sha_info->digest[4] = Py_ULL(0x510e527fade682d1);
261 sha_info->digest[5] = Py_ULL(0x9b05688c2b3e6c1f);
262 sha_info->digest[6] = Py_ULL(0x1f83d9abfb41bd6b);
263 sha_info->digest[7] = Py_ULL(0x5be0cd19137e2179);
264 sha_info->count_lo = 0L;
265 sha_info->count_hi = 0L;
266 sha_info->local = 0;
267 sha_info->digestsize = 64;
268 }
269
270 static void
sha384_init(SHAobject * sha_info)271 sha384_init(SHAobject *sha_info)
272 {
273 sha_info->digest[0] = Py_ULL(0xcbbb9d5dc1059ed8);
274 sha_info->digest[1] = Py_ULL(0x629a292a367cd507);
275 sha_info->digest[2] = Py_ULL(0x9159015a3070dd17);
276 sha_info->digest[3] = Py_ULL(0x152fecd8f70e5939);
277 sha_info->digest[4] = Py_ULL(0x67332667ffc00b31);
278 sha_info->digest[5] = Py_ULL(0x8eb44a8768581511);
279 sha_info->digest[6] = Py_ULL(0xdb0c2e0d64f98fa7);
280 sha_info->digest[7] = Py_ULL(0x47b5481dbefa4fa4);
281 sha_info->count_lo = 0L;
282 sha_info->count_hi = 0L;
283 sha_info->local = 0;
284 sha_info->digestsize = 48;
285 }
286
287
288 /* update the SHA digest */
289
290 static void
sha512_update(SHAobject * sha_info,SHA_BYTE * buffer,Py_ssize_t count)291 sha512_update(SHAobject *sha_info, SHA_BYTE *buffer, Py_ssize_t count)
292 {
293 Py_ssize_t i;
294 SHA_INT32 clo;
295
296 clo = sha_info->count_lo + ((SHA_INT32) count << 3);
297 if (clo < sha_info->count_lo) {
298 ++sha_info->count_hi;
299 }
300 sha_info->count_lo = clo;
301 sha_info->count_hi += (SHA_INT32) count >> 29;
302 if (sha_info->local) {
303 i = SHA_BLOCKSIZE - sha_info->local;
304 if (i > count) {
305 i = count;
306 }
307 memcpy(((SHA_BYTE *) sha_info->data) + sha_info->local, buffer, i);
308 count -= i;
309 buffer += i;
310 sha_info->local += (int)i;
311 if (sha_info->local == SHA_BLOCKSIZE) {
312 sha512_transform(sha_info);
313 }
314 else {
315 return;
316 }
317 }
318 while (count >= SHA_BLOCKSIZE) {
319 memcpy(sha_info->data, buffer, SHA_BLOCKSIZE);
320 buffer += SHA_BLOCKSIZE;
321 count -= SHA_BLOCKSIZE;
322 sha512_transform(sha_info);
323 }
324 memcpy(sha_info->data, buffer, count);
325 sha_info->local = (int)count;
326 }
327
328 /* finish computing the SHA digest */
329
330 static void
sha512_final(unsigned char digest[SHA_DIGESTSIZE],SHAobject * sha_info)331 sha512_final(unsigned char digest[SHA_DIGESTSIZE], SHAobject *sha_info)
332 {
333 int count;
334 SHA_INT32 lo_bit_count, hi_bit_count;
335
336 lo_bit_count = sha_info->count_lo;
337 hi_bit_count = sha_info->count_hi;
338 count = (int) ((lo_bit_count >> 3) & 0x7f);
339 ((SHA_BYTE *) sha_info->data)[count++] = 0x80;
340 if (count > SHA_BLOCKSIZE - 16) {
341 memset(((SHA_BYTE *) sha_info->data) + count, 0,
342 SHA_BLOCKSIZE - count);
343 sha512_transform(sha_info);
344 memset((SHA_BYTE *) sha_info->data, 0, SHA_BLOCKSIZE - 16);
345 }
346 else {
347 memset(((SHA_BYTE *) sha_info->data) + count, 0,
348 SHA_BLOCKSIZE - 16 - count);
349 }
350
351 /* GJS: note that we add the hi/lo in big-endian. sha512_transform will
352 swap these values into host-order. */
353 sha_info->data[112] = 0;
354 sha_info->data[113] = 0;
355 sha_info->data[114] = 0;
356 sha_info->data[115] = 0;
357 sha_info->data[116] = 0;
358 sha_info->data[117] = 0;
359 sha_info->data[118] = 0;
360 sha_info->data[119] = 0;
361 sha_info->data[120] = (hi_bit_count >> 24) & 0xff;
362 sha_info->data[121] = (hi_bit_count >> 16) & 0xff;
363 sha_info->data[122] = (hi_bit_count >> 8) & 0xff;
364 sha_info->data[123] = (hi_bit_count >> 0) & 0xff;
365 sha_info->data[124] = (lo_bit_count >> 24) & 0xff;
366 sha_info->data[125] = (lo_bit_count >> 16) & 0xff;
367 sha_info->data[126] = (lo_bit_count >> 8) & 0xff;
368 sha_info->data[127] = (lo_bit_count >> 0) & 0xff;
369 sha512_transform(sha_info);
370 digest[ 0] = (unsigned char) ((sha_info->digest[0] >> 56) & 0xff);
371 digest[ 1] = (unsigned char) ((sha_info->digest[0] >> 48) & 0xff);
372 digest[ 2] = (unsigned char) ((sha_info->digest[0] >> 40) & 0xff);
373 digest[ 3] = (unsigned char) ((sha_info->digest[0] >> 32) & 0xff);
374 digest[ 4] = (unsigned char) ((sha_info->digest[0] >> 24) & 0xff);
375 digest[ 5] = (unsigned char) ((sha_info->digest[0] >> 16) & 0xff);
376 digest[ 6] = (unsigned char) ((sha_info->digest[0] >> 8) & 0xff);
377 digest[ 7] = (unsigned char) ((sha_info->digest[0] ) & 0xff);
378 digest[ 8] = (unsigned char) ((sha_info->digest[1] >> 56) & 0xff);
379 digest[ 9] = (unsigned char) ((sha_info->digest[1] >> 48) & 0xff);
380 digest[10] = (unsigned char) ((sha_info->digest[1] >> 40) & 0xff);
381 digest[11] = (unsigned char) ((sha_info->digest[1] >> 32) & 0xff);
382 digest[12] = (unsigned char) ((sha_info->digest[1] >> 24) & 0xff);
383 digest[13] = (unsigned char) ((sha_info->digest[1] >> 16) & 0xff);
384 digest[14] = (unsigned char) ((sha_info->digest[1] >> 8) & 0xff);
385 digest[15] = (unsigned char) ((sha_info->digest[1] ) & 0xff);
386 digest[16] = (unsigned char) ((sha_info->digest[2] >> 56) & 0xff);
387 digest[17] = (unsigned char) ((sha_info->digest[2] >> 48) & 0xff);
388 digest[18] = (unsigned char) ((sha_info->digest[2] >> 40) & 0xff);
389 digest[19] = (unsigned char) ((sha_info->digest[2] >> 32) & 0xff);
390 digest[20] = (unsigned char) ((sha_info->digest[2] >> 24) & 0xff);
391 digest[21] = (unsigned char) ((sha_info->digest[2] >> 16) & 0xff);
392 digest[22] = (unsigned char) ((sha_info->digest[2] >> 8) & 0xff);
393 digest[23] = (unsigned char) ((sha_info->digest[2] ) & 0xff);
394 digest[24] = (unsigned char) ((sha_info->digest[3] >> 56) & 0xff);
395 digest[25] = (unsigned char) ((sha_info->digest[3] >> 48) & 0xff);
396 digest[26] = (unsigned char) ((sha_info->digest[3] >> 40) & 0xff);
397 digest[27] = (unsigned char) ((sha_info->digest[3] >> 32) & 0xff);
398 digest[28] = (unsigned char) ((sha_info->digest[3] >> 24) & 0xff);
399 digest[29] = (unsigned char) ((sha_info->digest[3] >> 16) & 0xff);
400 digest[30] = (unsigned char) ((sha_info->digest[3] >> 8) & 0xff);
401 digest[31] = (unsigned char) ((sha_info->digest[3] ) & 0xff);
402 digest[32] = (unsigned char) ((sha_info->digest[4] >> 56) & 0xff);
403 digest[33] = (unsigned char) ((sha_info->digest[4] >> 48) & 0xff);
404 digest[34] = (unsigned char) ((sha_info->digest[4] >> 40) & 0xff);
405 digest[35] = (unsigned char) ((sha_info->digest[4] >> 32) & 0xff);
406 digest[36] = (unsigned char) ((sha_info->digest[4] >> 24) & 0xff);
407 digest[37] = (unsigned char) ((sha_info->digest[4] >> 16) & 0xff);
408 digest[38] = (unsigned char) ((sha_info->digest[4] >> 8) & 0xff);
409 digest[39] = (unsigned char) ((sha_info->digest[4] ) & 0xff);
410 digest[40] = (unsigned char) ((sha_info->digest[5] >> 56) & 0xff);
411 digest[41] = (unsigned char) ((sha_info->digest[5] >> 48) & 0xff);
412 digest[42] = (unsigned char) ((sha_info->digest[5] >> 40) & 0xff);
413 digest[43] = (unsigned char) ((sha_info->digest[5] >> 32) & 0xff);
414 digest[44] = (unsigned char) ((sha_info->digest[5] >> 24) & 0xff);
415 digest[45] = (unsigned char) ((sha_info->digest[5] >> 16) & 0xff);
416 digest[46] = (unsigned char) ((sha_info->digest[5] >> 8) & 0xff);
417 digest[47] = (unsigned char) ((sha_info->digest[5] ) & 0xff);
418 digest[48] = (unsigned char) ((sha_info->digest[6] >> 56) & 0xff);
419 digest[49] = (unsigned char) ((sha_info->digest[6] >> 48) & 0xff);
420 digest[50] = (unsigned char) ((sha_info->digest[6] >> 40) & 0xff);
421 digest[51] = (unsigned char) ((sha_info->digest[6] >> 32) & 0xff);
422 digest[52] = (unsigned char) ((sha_info->digest[6] >> 24) & 0xff);
423 digest[53] = (unsigned char) ((sha_info->digest[6] >> 16) & 0xff);
424 digest[54] = (unsigned char) ((sha_info->digest[6] >> 8) & 0xff);
425 digest[55] = (unsigned char) ((sha_info->digest[6] ) & 0xff);
426 digest[56] = (unsigned char) ((sha_info->digest[7] >> 56) & 0xff);
427 digest[57] = (unsigned char) ((sha_info->digest[7] >> 48) & 0xff);
428 digest[58] = (unsigned char) ((sha_info->digest[7] >> 40) & 0xff);
429 digest[59] = (unsigned char) ((sha_info->digest[7] >> 32) & 0xff);
430 digest[60] = (unsigned char) ((sha_info->digest[7] >> 24) & 0xff);
431 digest[61] = (unsigned char) ((sha_info->digest[7] >> 16) & 0xff);
432 digest[62] = (unsigned char) ((sha_info->digest[7] >> 8) & 0xff);
433 digest[63] = (unsigned char) ((sha_info->digest[7] ) & 0xff);
434 }
435
436 /*
437 * End of copied SHA code.
438 *
439 * ------------------------------------------------------------------------
440 */
441
442 static PyTypeObject SHA384type;
443 static PyTypeObject SHA512type;
444
445
446 static SHAobject *
newSHA384object(void)447 newSHA384object(void)
448 {
449 return (SHAobject *)PyObject_New(SHAobject, &SHA384type);
450 }
451
452 static SHAobject *
newSHA512object(void)453 newSHA512object(void)
454 {
455 return (SHAobject *)PyObject_New(SHAobject, &SHA512type);
456 }
457
458 /* Internal methods for a hash object */
459
460 static void
SHA512_dealloc(PyObject * ptr)461 SHA512_dealloc(PyObject *ptr)
462 {
463 PyObject_Del(ptr);
464 }
465
466
467 /* External methods for a hash object */
468
469 /*[clinic input]
470 SHA512Type.copy
471
472 Return a copy of the hash object.
473 [clinic start generated code]*/
474
475 static PyObject *
SHA512Type_copy_impl(SHAobject * self)476 SHA512Type_copy_impl(SHAobject *self)
477 /*[clinic end generated code: output=adea896ed3164821 input=9f5f31e6c457776a]*/
478 {
479 SHAobject *newobj;
480
481 if (((PyObject*)self)->ob_type == &SHA512type) {
482 if ( (newobj = newSHA512object())==NULL)
483 return NULL;
484 } else {
485 if ( (newobj = newSHA384object())==NULL)
486 return NULL;
487 }
488
489 SHAcopy(self, newobj);
490 return (PyObject *)newobj;
491 }
492
493 /*[clinic input]
494 SHA512Type.digest
495
496 Return the digest value as a bytes object.
497 [clinic start generated code]*/
498
499 static PyObject *
SHA512Type_digest_impl(SHAobject * self)500 SHA512Type_digest_impl(SHAobject *self)
501 /*[clinic end generated code: output=1080bbeeef7dde1b input=f6470dd359071f4b]*/
502 {
503 unsigned char digest[SHA_DIGESTSIZE];
504 SHAobject temp;
505
506 SHAcopy(self, &temp);
507 sha512_final(digest, &temp);
508 return PyBytes_FromStringAndSize((const char *)digest, self->digestsize);
509 }
510
511 /*[clinic input]
512 SHA512Type.hexdigest
513
514 Return the digest value as a string of hexadecimal digits.
515 [clinic start generated code]*/
516
517 static PyObject *
SHA512Type_hexdigest_impl(SHAobject * self)518 SHA512Type_hexdigest_impl(SHAobject *self)
519 /*[clinic end generated code: output=7373305b8601e18b input=498b877b25cbe0a2]*/
520 {
521 unsigned char digest[SHA_DIGESTSIZE];
522 SHAobject temp;
523
524 /* Get the raw (binary) digest value */
525 SHAcopy(self, &temp);
526 sha512_final(digest, &temp);
527
528 return _Py_strhex((const char *)digest, self->digestsize);
529 }
530
531 /*[clinic input]
532 SHA512Type.update
533
534 obj: object
535 /
536
537 Update this hash object's state with the provided string.
538 [clinic start generated code]*/
539
540 static PyObject *
SHA512Type_update(SHAobject * self,PyObject * obj)541 SHA512Type_update(SHAobject *self, PyObject *obj)
542 /*[clinic end generated code: output=1cf333e73995a79e input=ded2b46656566283]*/
543 {
544 Py_buffer buf;
545
546 GET_BUFFER_VIEW_OR_ERROUT(obj, &buf);
547
548 sha512_update(self, buf.buf, buf.len);
549
550 PyBuffer_Release(&buf);
551 Py_RETURN_NONE;
552 }
553
554 static PyMethodDef SHA_methods[] = {
555 SHA512TYPE_COPY_METHODDEF
556 SHA512TYPE_DIGEST_METHODDEF
557 SHA512TYPE_HEXDIGEST_METHODDEF
558 SHA512TYPE_UPDATE_METHODDEF
559 {NULL, NULL} /* sentinel */
560 };
561
562 static PyObject *
SHA512_get_block_size(PyObject * self,void * closure)563 SHA512_get_block_size(PyObject *self, void *closure)
564 {
565 return PyLong_FromLong(SHA_BLOCKSIZE);
566 }
567
568 static PyObject *
SHA512_get_name(PyObject * self,void * closure)569 SHA512_get_name(PyObject *self, void *closure)
570 {
571 if (((SHAobject *)self)->digestsize == 64)
572 return PyUnicode_FromStringAndSize("sha512", 6);
573 else
574 return PyUnicode_FromStringAndSize("sha384", 6);
575 }
576
577 static PyGetSetDef SHA_getseters[] = {
578 {"block_size",
579 (getter)SHA512_get_block_size, NULL,
580 NULL,
581 NULL},
582 {"name",
583 (getter)SHA512_get_name, NULL,
584 NULL,
585 NULL},
586 {NULL} /* Sentinel */
587 };
588
589 static PyMemberDef SHA_members[] = {
590 {"digest_size", T_INT, offsetof(SHAobject, digestsize), READONLY, NULL},
591 {NULL} /* Sentinel */
592 };
593
594 static PyTypeObject SHA384type = {
595 PyVarObject_HEAD_INIT(NULL, 0)
596 "_sha512.sha384", /*tp_name*/
597 sizeof(SHAobject), /*tp_basicsize*/
598 0, /*tp_itemsize*/
599 /* methods */
600 SHA512_dealloc, /*tp_dealloc*/
601 0, /*tp_vectorcall_offset*/
602 0, /*tp_getattr*/
603 0, /*tp_setattr*/
604 0, /*tp_as_async*/
605 0, /*tp_repr*/
606 0, /*tp_as_number*/
607 0, /*tp_as_sequence*/
608 0, /*tp_as_mapping*/
609 0, /*tp_hash*/
610 0, /*tp_call*/
611 0, /*tp_str*/
612 0, /*tp_getattro*/
613 0, /*tp_setattro*/
614 0, /*tp_as_buffer*/
615 Py_TPFLAGS_DEFAULT, /*tp_flags*/
616 0, /*tp_doc*/
617 0, /*tp_traverse*/
618 0, /*tp_clear*/
619 0, /*tp_richcompare*/
620 0, /*tp_weaklistoffset*/
621 0, /*tp_iter*/
622 0, /*tp_iternext*/
623 SHA_methods, /* tp_methods */
624 SHA_members, /* tp_members */
625 SHA_getseters, /* tp_getset */
626 };
627
628 static PyTypeObject SHA512type = {
629 PyVarObject_HEAD_INIT(NULL, 0)
630 "_sha512.sha512", /*tp_name*/
631 sizeof(SHAobject), /*tp_basicsize*/
632 0, /*tp_itemsize*/
633 /* methods */
634 SHA512_dealloc, /*tp_dealloc*/
635 0, /*tp_vectorcall_offset*/
636 0, /*tp_getattr*/
637 0, /*tp_setattr*/
638 0, /*tp_as_async*/
639 0, /*tp_repr*/
640 0, /*tp_as_number*/
641 0, /*tp_as_sequence*/
642 0, /*tp_as_mapping*/
643 0, /*tp_hash*/
644 0, /*tp_call*/
645 0, /*tp_str*/
646 0, /*tp_getattro*/
647 0, /*tp_setattro*/
648 0, /*tp_as_buffer*/
649 Py_TPFLAGS_DEFAULT, /*tp_flags*/
650 0, /*tp_doc*/
651 0, /*tp_traverse*/
652 0, /*tp_clear*/
653 0, /*tp_richcompare*/
654 0, /*tp_weaklistoffset*/
655 0, /*tp_iter*/
656 0, /*tp_iternext*/
657 SHA_methods, /* tp_methods */
658 SHA_members, /* tp_members */
659 SHA_getseters, /* tp_getset */
660 };
661
662
663 /* The single module-level function: new() */
664
665 /*[clinic input]
666 _sha512.sha512
667
668 string: object(c_default="NULL") = b''
669
670 Return a new SHA-512 hash object; optionally initialized with a string.
671 [clinic start generated code]*/
672
673 static PyObject *
_sha512_sha512_impl(PyObject * module,PyObject * string)674 _sha512_sha512_impl(PyObject *module, PyObject *string)
675 /*[clinic end generated code: output=8b865a2df73bd387 input=e69bad9ae9b6a308]*/
676 {
677 SHAobject *new;
678 Py_buffer buf;
679
680 if (string)
681 GET_BUFFER_VIEW_OR_ERROUT(string, &buf);
682
683 if ((new = newSHA512object()) == NULL) {
684 if (string)
685 PyBuffer_Release(&buf);
686 return NULL;
687 }
688
689 sha512_init(new);
690
691 if (PyErr_Occurred()) {
692 Py_DECREF(new);
693 if (string)
694 PyBuffer_Release(&buf);
695 return NULL;
696 }
697 if (string) {
698 sha512_update(new, buf.buf, buf.len);
699 PyBuffer_Release(&buf);
700 }
701
702 return (PyObject *)new;
703 }
704
705 /*[clinic input]
706 _sha512.sha384
707
708 string: object(c_default="NULL") = b''
709
710 Return a new SHA-384 hash object; optionally initialized with a string.
711 [clinic start generated code]*/
712
713 static PyObject *
_sha512_sha384_impl(PyObject * module,PyObject * string)714 _sha512_sha384_impl(PyObject *module, PyObject *string)
715 /*[clinic end generated code: output=ae4b2e26decf81e8 input=c9327788d4ea4545]*/
716 {
717 SHAobject *new;
718 Py_buffer buf;
719
720 if (string)
721 GET_BUFFER_VIEW_OR_ERROUT(string, &buf);
722
723 if ((new = newSHA384object()) == NULL) {
724 if (string)
725 PyBuffer_Release(&buf);
726 return NULL;
727 }
728
729 sha384_init(new);
730
731 if (PyErr_Occurred()) {
732 Py_DECREF(new);
733 if (string)
734 PyBuffer_Release(&buf);
735 return NULL;
736 }
737 if (string) {
738 sha512_update(new, buf.buf, buf.len);
739 PyBuffer_Release(&buf);
740 }
741
742 return (PyObject *)new;
743 }
744
745
746 /* List of functions exported by this module */
747
748 static struct PyMethodDef SHA_functions[] = {
749 _SHA512_SHA512_METHODDEF
750 _SHA512_SHA384_METHODDEF
751 {NULL, NULL} /* Sentinel */
752 };
753
754
755 /* Initialize this module. */
756
757 #define insint(n,v) { PyModule_AddIntConstant(m,n,v); }
758
759
760 static struct PyModuleDef _sha512module = {
761 PyModuleDef_HEAD_INIT,
762 "_sha512",
763 NULL,
764 -1,
765 SHA_functions,
766 NULL,
767 NULL,
768 NULL,
769 NULL
770 };
771
772 PyMODINIT_FUNC
PyInit__sha512(void)773 PyInit__sha512(void)
774 {
775 PyObject *m;
776
777 Py_TYPE(&SHA384type) = &PyType_Type;
778 if (PyType_Ready(&SHA384type) < 0)
779 return NULL;
780 Py_TYPE(&SHA512type) = &PyType_Type;
781 if (PyType_Ready(&SHA512type) < 0)
782 return NULL;
783
784 m = PyModule_Create(&_sha512module);
785 if (m == NULL)
786 return NULL;
787
788 Py_INCREF((PyObject *)&SHA384type);
789 PyModule_AddObject(m, "SHA384Type", (PyObject *)&SHA384type);
790 Py_INCREF((PyObject *)&SHA512type);
791 PyModule_AddObject(m, "SHA512Type", (PyObject *)&SHA512type);
792 return m;
793 }
794