1 /* $OpenBSD: evp.h,v 1.50 2016/04/28 16:06:53 jsing Exp $ */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3  * All rights reserved.
4  *
5  * This package is an SSL implementation written
6  * by Eric Young (eay@cryptsoft.com).
7  * The implementation was written so as to conform with Netscapes SSL.
8  *
9  * This library is free for commercial and non-commercial use as long as
10  * the following conditions are aheared to.  The following conditions
11  * apply to all code found in this distribution, be it the RC4, RSA,
12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
13  * included with this distribution is covered by the same copyright terms
14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15  *
16  * Copyright remains Eric Young's, and as such any Copyright notices in
17  * the code are not to be removed.
18  * If this package is used in a product, Eric Young should be given attribution
19  * as the author of the parts of the library used.
20  * This can be in the form of a textual message at program startup or
21  * in documentation (online or textual) provided with the package.
22  *
23  * Redistribution and use in source and binary forms, with or without
24  * modification, are permitted provided that the following conditions
25  * are met:
26  * 1. Redistributions of source code must retain the copyright
27  *    notice, this list of conditions and the following disclaimer.
28  * 2. Redistributions in binary form must reproduce the above copyright
29  *    notice, this list of conditions and the following disclaimer in the
30  *    documentation and/or other materials provided with the distribution.
31  * 3. All advertising materials mentioning features or use of this software
32  *    must display the following acknowledgement:
33  *    "This product includes cryptographic software written by
34  *     Eric Young (eay@cryptsoft.com)"
35  *    The word 'cryptographic' can be left out if the rouines from the library
36  *    being used are not cryptographic related :-).
37  * 4. If you include any Windows specific code (or a derivative thereof) from
38  *    the apps directory (application code) you must include an acknowledgement:
39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40  *
41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51  * SUCH DAMAGE.
52  *
53  * The licence and distribution terms for any publically available version or
54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
55  * copied and put under another distribution licence
56  * [including the GNU Public Licence.]
57  */
58 
59 #ifndef HEADER_ENVELOPE_H
60 #define HEADER_ENVELOPE_H
61 
62 #include <openssl/opensslconf.h>
63 
64 #include <openssl/ossl_typ.h>
65 
66 #ifndef OPENSSL_NO_BIO
67 #include <openssl/bio.h>
68 #endif
69 
70 /*
71 #define EVP_RC2_KEY_SIZE		16
72 #define EVP_RC4_KEY_SIZE		16
73 #define EVP_BLOWFISH_KEY_SIZE		16
74 #define EVP_CAST5_KEY_SIZE		16
75 #define EVP_RC5_32_12_16_KEY_SIZE	16
76 */
77 #define EVP_MAX_MD_SIZE			64	/* longest known is SHA512 */
78 #define EVP_MAX_KEY_LENGTH		64
79 #define EVP_MAX_IV_LENGTH		16
80 #define EVP_MAX_BLOCK_LENGTH		32
81 
82 #define PKCS5_SALT_LEN			8
83 /* Default PKCS#5 iteration count */
84 #define PKCS5_DEFAULT_ITER		2048
85 
86 #include <openssl/objects.h>
87 
88 #define EVP_PK_RSA	0x0001
89 #define EVP_PK_DSA	0x0002
90 #define EVP_PK_DH	0x0004
91 #define EVP_PK_EC	0x0008
92 #define EVP_PKT_SIGN	0x0010
93 #define EVP_PKT_ENC	0x0020
94 #define EVP_PKT_EXCH	0x0040
95 #define EVP_PKS_RSA	0x0100
96 #define EVP_PKS_DSA	0x0200
97 #define EVP_PKS_EC	0x0400
98 #define EVP_PKT_EXP	0x1000 /* <= 512 bit key */
99 
100 #define EVP_PKEY_NONE	NID_undef
101 #define EVP_PKEY_RSA	NID_rsaEncryption
102 #define EVP_PKEY_RSA2	NID_rsa
103 #define EVP_PKEY_DSA	NID_dsa
104 #define EVP_PKEY_DSA1	NID_dsa_2
105 #define EVP_PKEY_DSA2	NID_dsaWithSHA
106 #define EVP_PKEY_DSA3	NID_dsaWithSHA1
107 #define EVP_PKEY_DSA4	NID_dsaWithSHA1_2
108 #define EVP_PKEY_DH	NID_dhKeyAgreement
109 #define EVP_PKEY_EC	NID_X9_62_id_ecPublicKey
110 #define EVP_PKEY_GOSTR01 NID_id_GostR3410_2001
111 #define EVP_PKEY_GOSTIMIT NID_id_Gost28147_89_MAC
112 #define EVP_PKEY_HMAC	NID_hmac
113 #define EVP_PKEY_CMAC	NID_cmac
114 #define EVP_PKEY_GOSTR12_256 NID_id_tc26_gost3410_2012_256
115 #define EVP_PKEY_GOSTR12_512 NID_id_tc26_gost3410_2012_512
116 
117 #ifdef	__cplusplus
118 extern "C" {
119 #endif
120 
121 /* Type needs to be a bit field
122  * Sub-type needs to be for variations on the method, as in, can it do
123  * arbitrary encryption.... */
124 struct evp_pkey_st {
125 	int type;
126 	int save_type;
127 	int references;
128 	const EVP_PKEY_ASN1_METHOD *ameth;
129 	ENGINE *engine;
130 	union	{
131 		char *ptr;
132 #ifndef OPENSSL_NO_RSA
133 		struct rsa_st *rsa;	/* RSA */
134 #endif
135 #ifndef OPENSSL_NO_DSA
136 		struct dsa_st *dsa;	/* DSA */
137 #endif
138 #ifndef OPENSSL_NO_DH
139 		struct dh_st *dh;	/* DH */
140 #endif
141 #ifndef OPENSSL_NO_EC
142 		struct ec_key_st *ec;	/* ECC */
143 #endif
144 #ifndef OPENSSL_NO_GOST
145 		struct gost_key_st *gost; /* GOST */
146 #endif
147 	} pkey;
148 	int save_parameters;
149 	STACK_OF(X509_ATTRIBUTE) *attributes; /* [ 0 ] */
150 } /* EVP_PKEY */;
151 
152 #define EVP_PKEY_MO_SIGN	0x0001
153 #define EVP_PKEY_MO_VERIFY	0x0002
154 #define EVP_PKEY_MO_ENCRYPT	0x0004
155 #define EVP_PKEY_MO_DECRYPT	0x0008
156 
157 typedef int evp_sign_method(int type, const unsigned char *m,
158     unsigned int m_length, unsigned char *sigret, unsigned int *siglen,
159     void *key);
160 typedef int evp_verify_method(int type, const unsigned char *m,
161     unsigned int m_length, const unsigned char *sigbuf, unsigned int siglen,
162     void *key);
163 
164 #ifndef EVP_MD
165 struct env_md_st {
166 	int type;
167 	int pkey_type;
168 	int md_size;
169 	unsigned long flags;
170 	int (*init)(EVP_MD_CTX *ctx);
171 	int (*update)(EVP_MD_CTX *ctx, const void *data, size_t count);
172 	int (*final)(EVP_MD_CTX *ctx, unsigned char *md);
173 	int (*copy)(EVP_MD_CTX *to, const EVP_MD_CTX *from);
174 	int (*cleanup)(EVP_MD_CTX *ctx);
175 
176 	evp_sign_method *sign;
177 	evp_verify_method *verify;
178 	int required_pkey_type[5]; /*EVP_PKEY_xxx */
179 	int block_size;
180 	int ctx_size; /* how big does the ctx->md_data need to be */
181 	/* control function */
182 	int (*md_ctrl)(EVP_MD_CTX *ctx, int cmd, int p1, void *p2);
183 } /* EVP_MD */;
184 
185 #define EVP_MD_FLAG_ONESHOT	0x0001 /* digest can only handle a single
186 					* block */
187 
188 #define EVP_MD_FLAG_PKEY_DIGEST	0x0002 /* digest is a "clone" digest used
189 					* which is a copy of an existing
190 					* one for a specific public key type.
191 					* EVP_dss1() etc */
192 
193 /* Digest uses EVP_PKEY_METHOD for signing instead of MD specific signing */
194 
195 #define EVP_MD_FLAG_PKEY_METHOD_SIGNATURE	0x0004
196 
197 /* DigestAlgorithmIdentifier flags... */
198 
199 #define EVP_MD_FLAG_DIGALGID_MASK		0x0018
200 
201 /* NULL or absent parameter accepted. Use NULL */
202 
203 #define EVP_MD_FLAG_DIGALGID_NULL		0x0000
204 
205 /* NULL or absent parameter accepted. Use NULL for PKCS#1 otherwise absent */
206 
207 #define EVP_MD_FLAG_DIGALGID_ABSENT		0x0008
208 
209 /* Custom handling via ctrl */
210 
211 #define EVP_MD_FLAG_DIGALGID_CUSTOM		0x0018
212 
213 #define EVP_MD_FLAG_FIPS	0x0400 /* Note if suitable for use in FIPS mode */
214 
215 /* Digest ctrls */
216 
217 #define	EVP_MD_CTRL_DIGALGID			0x1
218 #define	EVP_MD_CTRL_MICALG			0x2
219 #define	EVP_MD_CTRL_SET_KEY			0x3
220 #define	EVP_MD_CTRL_GOST_SET_SBOX		0x4
221 
222 /* Minimum Algorithm specific ctrl value */
223 
224 #define	EVP_MD_CTRL_ALG_CTRL			0x1000
225 
226 #define EVP_PKEY_NULL_method	NULL,NULL,{0,0,0,0}
227 
228 #ifndef OPENSSL_NO_DSA
229 #define EVP_PKEY_DSA_method	(evp_sign_method *)DSA_sign, \
230 				(evp_verify_method *)DSA_verify, \
231 				{EVP_PKEY_DSA,EVP_PKEY_DSA2,EVP_PKEY_DSA3, \
232 					EVP_PKEY_DSA4,0}
233 #else
234 #define EVP_PKEY_DSA_method	EVP_PKEY_NULL_method
235 #endif
236 
237 #ifndef OPENSSL_NO_ECDSA
238 #define EVP_PKEY_ECDSA_method   (evp_sign_method *)ECDSA_sign, \
239 				(evp_verify_method *)ECDSA_verify, \
240                                  {EVP_PKEY_EC,0,0,0}
241 #else
242 #define EVP_PKEY_ECDSA_method   EVP_PKEY_NULL_method
243 #endif
244 
245 #ifndef OPENSSL_NO_RSA
246 #define EVP_PKEY_RSA_method	(evp_sign_method *)RSA_sign, \
247 				(evp_verify_method *)RSA_verify, \
248 				{EVP_PKEY_RSA,EVP_PKEY_RSA2,0,0}
249 #define EVP_PKEY_RSA_ASN1_OCTET_STRING_method \
250 				(evp_sign_method *)RSA_sign_ASN1_OCTET_STRING, \
251 				(evp_verify_method *)RSA_verify_ASN1_OCTET_STRING, \
252 				{EVP_PKEY_RSA,EVP_PKEY_RSA2,0,0}
253 #else
254 #define EVP_PKEY_RSA_method	EVP_PKEY_NULL_method
255 #define EVP_PKEY_RSA_ASN1_OCTET_STRING_method EVP_PKEY_NULL_method
256 #endif
257 
258 #endif /* !EVP_MD */
259 
260 struct env_md_ctx_st {
261 	const EVP_MD *digest;
262 	ENGINE *engine; /* functional reference if 'digest' is ENGINE-provided */
263 	unsigned long flags;
264 	void *md_data;
265 	/* Public key context for sign/verify */
266 	EVP_PKEY_CTX *pctx;
267 	/* Update function: usually copied from EVP_MD */
268 	int (*update)(EVP_MD_CTX *ctx, const void *data, size_t count);
269 } /* EVP_MD_CTX */;
270 
271 /* values for EVP_MD_CTX flags */
272 
273 #define EVP_MD_CTX_FLAG_ONESHOT		0x0001 /* digest update will be called
274 						* once only */
275 #define EVP_MD_CTX_FLAG_CLEANED		0x0002 /* context has already been
276 						* cleaned */
277 #define EVP_MD_CTX_FLAG_REUSE		0x0004 /* Don't free up ctx->md_data
278 						* in EVP_MD_CTX_cleanup */
279 /* FIPS and pad options are ignored in 1.0.0, definitions are here
280  * so we don't accidentally reuse the values for other purposes.
281  */
282 
283 #define EVP_MD_CTX_FLAG_NON_FIPS_ALLOW	0x0008	/* Allow use of non FIPS digest
284 						 * in FIPS mode */
285 
286 /* The following PAD options are also currently ignored in 1.0.0, digest
287  * parameters are handled through EVP_DigestSign*() and EVP_DigestVerify*()
288  * instead.
289  */
290 #define EVP_MD_CTX_FLAG_PAD_MASK	0xF0	/* RSA mode to use */
291 #define EVP_MD_CTX_FLAG_PAD_PKCS1	0x00	/* PKCS#1 v1.5 mode */
292 #define EVP_MD_CTX_FLAG_PAD_X931	0x10	/* X9.31 mode */
293 #define EVP_MD_CTX_FLAG_PAD_PSS		0x20	/* PSS mode */
294 
295 #define EVP_MD_CTX_FLAG_NO_INIT		0x0100 /* Don't initialize md_data */
296 
297 struct evp_cipher_st {
298 	int nid;
299 	int block_size;
300 	int key_len;		/* Default value for variable length ciphers */
301 	int iv_len;
302 	unsigned long flags;	/* Various flags */
303 	int (*init)(EVP_CIPHER_CTX *ctx, const unsigned char *key,
304 	    const unsigned char *iv, int enc);	/* init key */
305 	int (*do_cipher)(EVP_CIPHER_CTX *ctx, unsigned char *out,
306 	    const unsigned char *in, size_t inl);/* encrypt/decrypt data */
307 	int (*cleanup)(EVP_CIPHER_CTX *); /* cleanup ctx */
308 	int ctx_size;		/* how big ctx->cipher_data needs to be */
309 	int (*set_asn1_parameters)(EVP_CIPHER_CTX *, ASN1_TYPE *); /* Populate a ASN1_TYPE with parameters */
310 	int (*get_asn1_parameters)(EVP_CIPHER_CTX *, ASN1_TYPE *); /* Get parameters from a ASN1_TYPE */
311 	int (*ctrl)(EVP_CIPHER_CTX *, int type, int arg, void *ptr); /* Miscellaneous operations */
312 	void *app_data;		/* Application data */
313 } /* EVP_CIPHER */;
314 
315 /* Values for cipher flags */
316 
317 /* Modes for ciphers */
318 
319 #define		EVP_CIPH_STREAM_CIPHER		0x0
320 #define		EVP_CIPH_ECB_MODE		0x1
321 #define		EVP_CIPH_CBC_MODE		0x2
322 #define		EVP_CIPH_CFB_MODE		0x3
323 #define		EVP_CIPH_OFB_MODE		0x4
324 #define		EVP_CIPH_CTR_MODE		0x5
325 #define		EVP_CIPH_GCM_MODE		0x6
326 #define		EVP_CIPH_CCM_MODE		0x7
327 #define		EVP_CIPH_XTS_MODE		0x10001
328 #define 	EVP_CIPH_MODE			0xF0007
329 /* Set if variable length cipher */
330 #define 	EVP_CIPH_VARIABLE_LENGTH	0x8
331 /* Set if the iv handling should be done by the cipher itself */
332 #define 	EVP_CIPH_CUSTOM_IV		0x10
333 /* Set if the cipher's init() function should be called if key is NULL */
334 #define 	EVP_CIPH_ALWAYS_CALL_INIT	0x20
335 /* Call ctrl() to init cipher parameters */
336 #define 	EVP_CIPH_CTRL_INIT		0x40
337 /* Don't use standard key length function */
338 #define 	EVP_CIPH_CUSTOM_KEY_LENGTH	0x80
339 /* Don't use standard block padding */
340 #define 	EVP_CIPH_NO_PADDING		0x100
341 /* cipher handles random key generation */
342 #define 	EVP_CIPH_RAND_KEY		0x200
343 /* cipher has its own additional copying logic */
344 #define 	EVP_CIPH_CUSTOM_COPY		0x400
345 /* Allow use default ASN1 get/set iv */
346 #define		EVP_CIPH_FLAG_DEFAULT_ASN1	0x1000
347 /* Buffer length in bits not bytes: CFB1 mode only */
348 #define		EVP_CIPH_FLAG_LENGTH_BITS	0x2000
349 /* Note if suitable for use in FIPS mode */
350 #define		EVP_CIPH_FLAG_FIPS		0x4000
351 /* Allow non FIPS cipher in FIPS mode */
352 #define		EVP_CIPH_FLAG_NON_FIPS_ALLOW	0x8000
353 /* Cipher handles any and all padding logic as well
354  * as finalisation.
355  */
356 #define 	EVP_CIPH_FLAG_CUSTOM_CIPHER	0x100000
357 #define		EVP_CIPH_FLAG_AEAD_CIPHER	0x200000
358 
359 /* ctrl() values */
360 
361 #define		EVP_CTRL_INIT			0x0
362 #define 	EVP_CTRL_SET_KEY_LENGTH		0x1
363 #define 	EVP_CTRL_GET_RC2_KEY_BITS	0x2
364 #define 	EVP_CTRL_SET_RC2_KEY_BITS	0x3
365 #define 	EVP_CTRL_GET_RC5_ROUNDS		0x4
366 #define 	EVP_CTRL_SET_RC5_ROUNDS		0x5
367 #define 	EVP_CTRL_RAND_KEY		0x6
368 #define 	EVP_CTRL_PBE_PRF_NID		0x7
369 #define 	EVP_CTRL_COPY			0x8
370 #define 	EVP_CTRL_GCM_SET_IVLEN		0x9
371 #define 	EVP_CTRL_GCM_GET_TAG		0x10
372 #define 	EVP_CTRL_GCM_SET_TAG		0x11
373 #define		EVP_CTRL_GCM_SET_IV_FIXED	0x12
374 #define		EVP_CTRL_GCM_IV_GEN		0x13
375 #define		EVP_CTRL_CCM_SET_IVLEN		EVP_CTRL_GCM_SET_IVLEN
376 #define		EVP_CTRL_CCM_GET_TAG		EVP_CTRL_GCM_GET_TAG
377 #define		EVP_CTRL_CCM_SET_TAG		EVP_CTRL_GCM_SET_TAG
378 #define		EVP_CTRL_CCM_SET_L		0x14
379 #define		EVP_CTRL_CCM_SET_MSGLEN		0x15
380 /* AEAD cipher deduces payload length and returns number of bytes
381  * required to store MAC and eventual padding. Subsequent call to
382  * EVP_Cipher even appends/verifies MAC.
383  */
384 #define		EVP_CTRL_AEAD_TLS1_AAD		0x16
385 /* Used by composite AEAD ciphers, no-op in GCM, CCM... */
386 #define		EVP_CTRL_AEAD_SET_MAC_KEY	0x17
387 /* Set the GCM invocation field, decrypt only */
388 #define		EVP_CTRL_GCM_SET_IV_INV		0x18
389 /* Set the S-BOX NID for GOST ciphers */
390 #define		EVP_CTRL_GOST_SET_SBOX		0x19
391 
392 /* GCM TLS constants */
393 /* Length of fixed part of IV derived from PRF */
394 #define EVP_GCM_TLS_FIXED_IV_LEN			4
395 /* Length of explicit part of IV part of TLS records */
396 #define EVP_GCM_TLS_EXPLICIT_IV_LEN			8
397 /* Length of tag for TLS */
398 #define EVP_GCM_TLS_TAG_LEN				16
399 
400 typedef struct evp_cipher_info_st {
401 	const EVP_CIPHER *cipher;
402 	unsigned char iv[EVP_MAX_IV_LENGTH];
403 } EVP_CIPHER_INFO;
404 
405 struct evp_cipher_ctx_st {
406 	const EVP_CIPHER *cipher;
407 	ENGINE *engine;	/* functional reference if 'cipher' is ENGINE-provided */
408 	int encrypt;		/* encrypt or decrypt */
409 	int buf_len;		/* number we have left */
410 
411 	unsigned char  oiv[EVP_MAX_IV_LENGTH];	/* original iv */
412 	unsigned char  iv[EVP_MAX_IV_LENGTH];	/* working iv */
413 	unsigned char buf[EVP_MAX_BLOCK_LENGTH];/* saved partial block */
414 	int num;				/* used by cfb/ofb/ctr mode */
415 
416 	void *app_data;		/* application stuff */
417 	int key_len;		/* May change for variable length cipher */
418 	unsigned long flags;	/* Various flags */
419 	void *cipher_data; /* per EVP data */
420 	int final_used;
421 	int block_mask;
422 	unsigned char final[EVP_MAX_BLOCK_LENGTH];/* possible final block */
423 } /* EVP_CIPHER_CTX */;
424 
425 typedef struct evp_Encode_Ctx_st {
426 	int num;	/* number saved in a partial encode/decode */
427 	int length;	/* The length is either the output line length
428 			 * (in input bytes) or the shortest input line
429 			 * length that is ok.  Once decoding begins,
430 			 * the length is adjusted up each time a longer
431 			 * line is decoded */
432 	unsigned char enc_data[80];	/* data to encode */
433 	int line_num;	/* number read on current line */
434 	int expect_nl;
435 } EVP_ENCODE_CTX;
436 
437 /* Password based encryption function */
438 typedef int (EVP_PBE_KEYGEN)(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
439     ASN1_TYPE *param, const EVP_CIPHER *cipher, const EVP_MD *md, int en_de);
440 
441 #ifndef OPENSSL_NO_RSA
442 #define EVP_PKEY_assign_RSA(pkey,rsa) EVP_PKEY_assign((pkey),EVP_PKEY_RSA,\
443 					(char *)(rsa))
444 #endif
445 
446 #ifndef OPENSSL_NO_DSA
447 #define EVP_PKEY_assign_DSA(pkey,dsa) EVP_PKEY_assign((pkey),EVP_PKEY_DSA,\
448 					(char *)(dsa))
449 #endif
450 
451 #ifndef OPENSSL_NO_DH
452 #define EVP_PKEY_assign_DH(pkey,dh) EVP_PKEY_assign((pkey),EVP_PKEY_DH,\
453 					(char *)(dh))
454 #endif
455 
456 #ifndef OPENSSL_NO_EC
457 #define EVP_PKEY_assign_EC_KEY(pkey,eckey) EVP_PKEY_assign((pkey),EVP_PKEY_EC,\
458                                         (char *)(eckey))
459 #endif
460 
461 #ifndef OPENSSL_NO_GOST
462 #define EVP_PKEY_assign_GOST(pkey,gostkey) EVP_PKEY_assign((pkey),EVP_PKEY_GOSTR01,\
463                                         (char *)(gostkey))
464 #endif
465 
466 /* Add some extra combinations */
467 #define EVP_get_digestbynid(a) EVP_get_digestbyname(OBJ_nid2sn(a))
468 #define EVP_get_digestbyobj(a) EVP_get_digestbynid(OBJ_obj2nid(a))
469 #define EVP_get_cipherbynid(a) EVP_get_cipherbyname(OBJ_nid2sn(a))
470 #define EVP_get_cipherbyobj(a) EVP_get_cipherbynid(OBJ_obj2nid(a))
471 
472 int EVP_MD_type(const EVP_MD *md);
473 #define EVP_MD_nid(e)			EVP_MD_type(e)
474 #define EVP_MD_name(e)			OBJ_nid2sn(EVP_MD_nid(e))
475 int EVP_MD_pkey_type(const EVP_MD *md);
476 int EVP_MD_size(const EVP_MD *md);
477 int EVP_MD_block_size(const EVP_MD *md);
478 unsigned long EVP_MD_flags(const EVP_MD *md);
479 
480 const EVP_MD *EVP_MD_CTX_md(const EVP_MD_CTX *ctx);
481 #define EVP_MD_CTX_size(e)		EVP_MD_size(EVP_MD_CTX_md(e))
482 #define EVP_MD_CTX_block_size(e)	EVP_MD_block_size(EVP_MD_CTX_md(e))
483 #define EVP_MD_CTX_type(e)		EVP_MD_type(EVP_MD_CTX_md(e))
484 
485 int EVP_CIPHER_nid(const EVP_CIPHER *cipher);
486 #define EVP_CIPHER_name(e)		OBJ_nid2sn(EVP_CIPHER_nid(e))
487 int EVP_CIPHER_block_size(const EVP_CIPHER *cipher);
488 int EVP_CIPHER_key_length(const EVP_CIPHER *cipher);
489 int EVP_CIPHER_iv_length(const EVP_CIPHER *cipher);
490 unsigned long EVP_CIPHER_flags(const EVP_CIPHER *cipher);
491 #define EVP_CIPHER_mode(e)		(EVP_CIPHER_flags(e) & EVP_CIPH_MODE)
492 
493 const EVP_CIPHER * EVP_CIPHER_CTX_cipher(const EVP_CIPHER_CTX *ctx);
494 int EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX *ctx);
495 int EVP_CIPHER_CTX_block_size(const EVP_CIPHER_CTX *ctx);
496 int EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx);
497 int EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX *ctx);
498 int EVP_CIPHER_CTX_copy(EVP_CIPHER_CTX *out, const EVP_CIPHER_CTX *in);
499 void * EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX *ctx);
500 void EVP_CIPHER_CTX_set_app_data(EVP_CIPHER_CTX *ctx, void *data);
501 #define EVP_CIPHER_CTX_type(c)         EVP_CIPHER_type(EVP_CIPHER_CTX_cipher(c))
502 unsigned long EVP_CIPHER_CTX_flags(const EVP_CIPHER_CTX *ctx);
503 #define EVP_CIPHER_CTX_mode(e)		(EVP_CIPHER_CTX_flags(e) & EVP_CIPH_MODE)
504 
505 #define EVP_ENCODE_LENGTH(l)	(((l+2)/3*4)+(l/48+1)*2+80)
506 #define EVP_DECODE_LENGTH(l)	((l+3)/4*3+80)
507 
508 #define EVP_SignInit_ex(a,b,c)		EVP_DigestInit_ex(a,b,c)
509 #define EVP_SignInit(a,b)		EVP_DigestInit(a,b)
510 #define EVP_SignUpdate(a,b,c)		EVP_DigestUpdate(a,b,c)
511 #define	EVP_VerifyInit_ex(a,b,c)	EVP_DigestInit_ex(a,b,c)
512 #define	EVP_VerifyInit(a,b)		EVP_DigestInit(a,b)
513 #define	EVP_VerifyUpdate(a,b,c)		EVP_DigestUpdate(a,b,c)
514 #define EVP_OpenUpdate(a,b,c,d,e)	EVP_DecryptUpdate(a,b,c,d,e)
515 #define EVP_SealUpdate(a,b,c,d,e)	EVP_EncryptUpdate(a,b,c,d,e)
516 #define EVP_DigestSignUpdate(a,b,c)	EVP_DigestUpdate(a,b,c)
517 #define EVP_DigestVerifyUpdate(a,b,c)	EVP_DigestUpdate(a,b,c)
518 
519 #define BIO_set_md(b,md)		BIO_ctrl(b,BIO_C_SET_MD,0,(char *)md)
520 #define BIO_get_md(b,mdp)		BIO_ctrl(b,BIO_C_GET_MD,0,(char *)mdp)
521 #define BIO_get_md_ctx(b,mdcp)     BIO_ctrl(b,BIO_C_GET_MD_CTX,0,(char *)mdcp)
522 #define BIO_set_md_ctx(b,mdcp)     BIO_ctrl(b,BIO_C_SET_MD_CTX,0,(char *)mdcp)
523 #define BIO_get_cipher_status(b)	BIO_ctrl(b,BIO_C_GET_CIPHER_STATUS,0,NULL)
524 #define BIO_get_cipher_ctx(b,c_pp)	BIO_ctrl(b,BIO_C_GET_CIPHER_CTX,0,(char *)c_pp)
525 
526 int EVP_Cipher(EVP_CIPHER_CTX *c, unsigned char *out, const unsigned char *in,
527     unsigned int inl);
528 
529 #define EVP_add_cipher_alias(n,alias) \
530 	OBJ_NAME_add((alias),OBJ_NAME_TYPE_CIPHER_METH|OBJ_NAME_ALIAS,(n))
531 #define EVP_add_digest_alias(n,alias) \
532 	OBJ_NAME_add((alias),OBJ_NAME_TYPE_MD_METH|OBJ_NAME_ALIAS,(n))
533 #define EVP_delete_cipher_alias(alias) \
534 	OBJ_NAME_remove(alias,OBJ_NAME_TYPE_CIPHER_METH|OBJ_NAME_ALIAS);
535 #define EVP_delete_digest_alias(alias) \
536 	OBJ_NAME_remove(alias,OBJ_NAME_TYPE_MD_METH|OBJ_NAME_ALIAS);
537 
538 void EVP_MD_CTX_init(EVP_MD_CTX *ctx);
539 int EVP_MD_CTX_cleanup(EVP_MD_CTX *ctx);
540 EVP_MD_CTX *EVP_MD_CTX_create(void);
541 void EVP_MD_CTX_destroy(EVP_MD_CTX *ctx);
542 int EVP_MD_CTX_copy_ex(EVP_MD_CTX *out, const EVP_MD_CTX *in);
543 void EVP_MD_CTX_set_flags(EVP_MD_CTX *ctx, int flags);
544 void EVP_MD_CTX_clear_flags(EVP_MD_CTX *ctx, int flags);
545 int EVP_MD_CTX_ctrl(EVP_MD_CTX *ctx, int type, int arg, void *ptr);
546 int EVP_MD_CTX_test_flags(const EVP_MD_CTX *ctx, int flags);
547 int EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl);
548 int EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *d, size_t cnt);
549 int EVP_DigestFinal_ex(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *s);
550 int EVP_Digest(const void *data, size_t count, unsigned char *md,
551     unsigned int *size, const EVP_MD *type, ENGINE *impl);
552 
553 int EVP_MD_CTX_copy(EVP_MD_CTX *out, const EVP_MD_CTX *in);
554 int EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type);
555 int EVP_DigestFinal(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *s);
556 
557 int EVP_read_pw_string(char *buf, int length, const char *prompt, int verify);
558 int EVP_read_pw_string_min(char *buf, int minlen, int maxlen,
559     const char *prompt, int verify);
560 void EVP_set_pw_prompt(const char *prompt);
561 char *EVP_get_pw_prompt(void);
562 
563 int EVP_BytesToKey(const EVP_CIPHER *type, const EVP_MD *md,
564     const unsigned char *salt, const unsigned char *data, int datal, int count,
565     unsigned char *key, unsigned char *iv);
566 
567 void EVP_CIPHER_CTX_set_flags(EVP_CIPHER_CTX *ctx, int flags);
568 void EVP_CIPHER_CTX_clear_flags(EVP_CIPHER_CTX *ctx, int flags);
569 int EVP_CIPHER_CTX_test_flags(const EVP_CIPHER_CTX *ctx, int flags);
570 
571 int EVP_EncryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
572     const unsigned char *key, const unsigned char *iv);
573 int EVP_EncryptInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
574     ENGINE *impl, const unsigned char *key, const unsigned char *iv);
575 int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
576     const unsigned char *in, int inl);
577 int EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl);
578 #ifndef LIBRESSL_INTERNAL
579 int EVP_EncryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl);
580 #endif
581 
582 int EVP_DecryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
583     const unsigned char *key, const unsigned char *iv);
584 int EVP_DecryptInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
585     ENGINE *impl, const unsigned char *key, const unsigned char *iv);
586 int EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
587     const unsigned char *in, int inl);
588 int EVP_DecryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *outm, int *outl);
589 #ifndef LIBRESSL_INTERNAL
590 int EVP_DecryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *outm, int *outl);
591 #endif
592 
593 int EVP_CipherInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
594     const unsigned char *key, const unsigned char *iv, int enc);
595 int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
596     ENGINE *impl, const unsigned char *key, const unsigned char *iv, int enc);
597 int EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
598     const unsigned char *in, int inl);
599 int EVP_CipherFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *outm, int *outl);
600 #ifndef LIBRESSL_INTERNAL
601 int EVP_CipherFinal(EVP_CIPHER_CTX *ctx, unsigned char *outm, int *outl);
602 #endif
603 
604 int EVP_SignFinal(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *s,
605     EVP_PKEY *pkey);
606 
607 int EVP_VerifyFinal(EVP_MD_CTX *ctx, const unsigned char *sigbuf,
608     unsigned int siglen, EVP_PKEY *pkey);
609 
610 int EVP_DigestSignInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
611     const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey);
612 int EVP_DigestSignFinal(EVP_MD_CTX *ctx, unsigned char *sigret, size_t *siglen);
613 
614 int EVP_DigestVerifyInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
615     const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey);
616 int EVP_DigestVerifyFinal(EVP_MD_CTX *ctx, unsigned char *sig, size_t siglen);
617 
618 int EVP_OpenInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *type,
619     const unsigned char *ek, int ekl, const unsigned char *iv, EVP_PKEY *priv);
620 int EVP_OpenFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl);
621 
622 int EVP_SealInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *type,
623     unsigned char **ek, int *ekl, unsigned char *iv, EVP_PKEY **pubk,
624     int npubk);
625 int EVP_SealFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl);
626 
627 void EVP_EncodeInit(EVP_ENCODE_CTX *ctx);
628 void EVP_EncodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,
629     const unsigned char *in, int inl);
630 void EVP_EncodeFinal(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl);
631 int EVP_EncodeBlock(unsigned char *t, const unsigned char *f, int n);
632 
633 void EVP_DecodeInit(EVP_ENCODE_CTX *ctx);
634 int EVP_DecodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,
635     const unsigned char *in, int inl);
636 int EVP_DecodeFinal(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl);
637 int EVP_DecodeBlock(unsigned char *t, const unsigned char *f, int n);
638 
639 void EVP_CIPHER_CTX_init(EVP_CIPHER_CTX *a);
640 int EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *a);
641 EVP_CIPHER_CTX *EVP_CIPHER_CTX_new(void);
642 void EVP_CIPHER_CTX_free(EVP_CIPHER_CTX *a);
643 int EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *x, int keylen);
644 int EVP_CIPHER_CTX_set_padding(EVP_CIPHER_CTX *c, int pad);
645 int EVP_CIPHER_CTX_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr);
646 int EVP_CIPHER_CTX_rand_key(EVP_CIPHER_CTX *ctx, unsigned char *key);
647 
648 #ifndef OPENSSL_NO_BIO
649 BIO_METHOD *BIO_f_md(void);
650 BIO_METHOD *BIO_f_base64(void);
651 BIO_METHOD *BIO_f_cipher(void);
652 void BIO_set_cipher(BIO *b, const EVP_CIPHER *c, const unsigned char *k,
653     const unsigned char *i, int enc);
654 #endif
655 
656 const EVP_MD *EVP_md_null(void);
657 #ifndef OPENSSL_NO_MD4
658 const EVP_MD *EVP_md4(void);
659 #endif
660 #ifndef OPENSSL_NO_MD5
661 const EVP_MD *EVP_md5(void);
662 #endif
663 #ifndef OPENSSL_NO_SHA
664 const EVP_MD *EVP_sha1(void);
665 const EVP_MD *EVP_dss(void);
666 const EVP_MD *EVP_dss1(void);
667 const EVP_MD *EVP_ecdsa(void);
668 #endif
669 #ifndef OPENSSL_NO_SHA256
670 const EVP_MD *EVP_sha224(void);
671 const EVP_MD *EVP_sha256(void);
672 #endif
673 #ifndef OPENSSL_NO_SHA512
674 const EVP_MD *EVP_sha384(void);
675 const EVP_MD *EVP_sha512(void);
676 #endif
677 #ifndef OPENSSL_NO_RIPEMD
678 const EVP_MD *EVP_ripemd160(void);
679 #endif
680 #ifndef OPENSSL_NO_WHIRLPOOL
681 const EVP_MD *EVP_whirlpool(void);
682 #endif
683 #ifndef OPENSSL_NO_GOST
684 const EVP_MD *EVP_gostr341194(void);
685 const EVP_MD *EVP_gost2814789imit(void);
686 const EVP_MD *EVP_streebog256(void);
687 const EVP_MD *EVP_streebog512(void);
688 #endif
689 const EVP_CIPHER *EVP_enc_null(void);		/* does nothing :-) */
690 #ifndef OPENSSL_NO_DES
691 const EVP_CIPHER *EVP_des_ecb(void);
692 const EVP_CIPHER *EVP_des_ede(void);
693 const EVP_CIPHER *EVP_des_ede3(void);
694 const EVP_CIPHER *EVP_des_ede_ecb(void);
695 const EVP_CIPHER *EVP_des_ede3_ecb(void);
696 const EVP_CIPHER *EVP_des_cfb64(void);
697 # define EVP_des_cfb EVP_des_cfb64
698 const EVP_CIPHER *EVP_des_cfb1(void);
699 const EVP_CIPHER *EVP_des_cfb8(void);
700 const EVP_CIPHER *EVP_des_ede_cfb64(void);
701 # define EVP_des_ede_cfb EVP_des_ede_cfb64
702 const EVP_CIPHER *EVP_des_ede3_cfb64(void);
703 # define EVP_des_ede3_cfb EVP_des_ede3_cfb64
704 const EVP_CIPHER *EVP_des_ede3_cfb1(void);
705 const EVP_CIPHER *EVP_des_ede3_cfb8(void);
706 const EVP_CIPHER *EVP_des_ofb(void);
707 const EVP_CIPHER *EVP_des_ede_ofb(void);
708 const EVP_CIPHER *EVP_des_ede3_ofb(void);
709 const EVP_CIPHER *EVP_des_cbc(void);
710 const EVP_CIPHER *EVP_des_ede_cbc(void);
711 const EVP_CIPHER *EVP_des_ede3_cbc(void);
712 const EVP_CIPHER *EVP_desx_cbc(void);
713 #endif
714 #ifndef OPENSSL_NO_RC4
715 const EVP_CIPHER *EVP_rc4(void);
716 const EVP_CIPHER *EVP_rc4_40(void);
717 #ifndef OPENSSL_NO_MD5
718 const EVP_CIPHER *EVP_rc4_hmac_md5(void);
719 #endif
720 #endif
721 #ifndef OPENSSL_NO_IDEA
722 const EVP_CIPHER *EVP_idea_ecb(void);
723 const EVP_CIPHER *EVP_idea_cfb64(void);
724 # define EVP_idea_cfb EVP_idea_cfb64
725 const EVP_CIPHER *EVP_idea_ofb(void);
726 const EVP_CIPHER *EVP_idea_cbc(void);
727 #endif
728 #ifndef OPENSSL_NO_RC2
729 const EVP_CIPHER *EVP_rc2_ecb(void);
730 const EVP_CIPHER *EVP_rc2_cbc(void);
731 const EVP_CIPHER *EVP_rc2_40_cbc(void);
732 const EVP_CIPHER *EVP_rc2_64_cbc(void);
733 const EVP_CIPHER *EVP_rc2_cfb64(void);
734 # define EVP_rc2_cfb EVP_rc2_cfb64
735 const EVP_CIPHER *EVP_rc2_ofb(void);
736 #endif
737 #ifndef OPENSSL_NO_BF
738 const EVP_CIPHER *EVP_bf_ecb(void);
739 const EVP_CIPHER *EVP_bf_cbc(void);
740 const EVP_CIPHER *EVP_bf_cfb64(void);
741 # define EVP_bf_cfb EVP_bf_cfb64
742 const EVP_CIPHER *EVP_bf_ofb(void);
743 #endif
744 #ifndef OPENSSL_NO_CAST
745 const EVP_CIPHER *EVP_cast5_ecb(void);
746 const EVP_CIPHER *EVP_cast5_cbc(void);
747 const EVP_CIPHER *EVP_cast5_cfb64(void);
748 # define EVP_cast5_cfb EVP_cast5_cfb64
749 const EVP_CIPHER *EVP_cast5_ofb(void);
750 #endif
751 #ifndef OPENSSL_NO_AES
752 const EVP_CIPHER *EVP_aes_128_ecb(void);
753 const EVP_CIPHER *EVP_aes_128_cbc(void);
754 const EVP_CIPHER *EVP_aes_128_cfb1(void);
755 const EVP_CIPHER *EVP_aes_128_cfb8(void);
756 const EVP_CIPHER *EVP_aes_128_cfb128(void);
757 # define EVP_aes_128_cfb EVP_aes_128_cfb128
758 const EVP_CIPHER *EVP_aes_128_ofb(void);
759 const EVP_CIPHER *EVP_aes_128_ctr(void);
760 const EVP_CIPHER *EVP_aes_128_ccm(void);
761 const EVP_CIPHER *EVP_aes_128_gcm(void);
762 const EVP_CIPHER *EVP_aes_128_xts(void);
763 const EVP_CIPHER *EVP_aes_192_ecb(void);
764 const EVP_CIPHER *EVP_aes_192_cbc(void);
765 const EVP_CIPHER *EVP_aes_192_cfb1(void);
766 const EVP_CIPHER *EVP_aes_192_cfb8(void);
767 const EVP_CIPHER *EVP_aes_192_cfb128(void);
768 # define EVP_aes_192_cfb EVP_aes_192_cfb128
769 const EVP_CIPHER *EVP_aes_192_ofb(void);
770 const EVP_CIPHER *EVP_aes_192_ctr(void);
771 const EVP_CIPHER *EVP_aes_192_ccm(void);
772 const EVP_CIPHER *EVP_aes_192_gcm(void);
773 const EVP_CIPHER *EVP_aes_256_ecb(void);
774 const EVP_CIPHER *EVP_aes_256_cbc(void);
775 const EVP_CIPHER *EVP_aes_256_cfb1(void);
776 const EVP_CIPHER *EVP_aes_256_cfb8(void);
777 const EVP_CIPHER *EVP_aes_256_cfb128(void);
778 # define EVP_aes_256_cfb EVP_aes_256_cfb128
779 const EVP_CIPHER *EVP_aes_256_ofb(void);
780 const EVP_CIPHER *EVP_aes_256_ctr(void);
781 const EVP_CIPHER *EVP_aes_256_ccm(void);
782 const EVP_CIPHER *EVP_aes_256_gcm(void);
783 const EVP_CIPHER *EVP_aes_256_xts(void);
784 #if !defined(OPENSSL_NO_SHA) && !defined(OPENSSL_NO_SHA1)
785 const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha1(void);
786 const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha1(void);
787 #endif
788 #endif
789 #ifndef OPENSSL_NO_CAMELLIA
790 const EVP_CIPHER *EVP_camellia_128_ecb(void);
791 const EVP_CIPHER *EVP_camellia_128_cbc(void);
792 const EVP_CIPHER *EVP_camellia_128_cfb1(void);
793 const EVP_CIPHER *EVP_camellia_128_cfb8(void);
794 const EVP_CIPHER *EVP_camellia_128_cfb128(void);
795 # define EVP_camellia_128_cfb EVP_camellia_128_cfb128
796 const EVP_CIPHER *EVP_camellia_128_ofb(void);
797 const EVP_CIPHER *EVP_camellia_192_ecb(void);
798 const EVP_CIPHER *EVP_camellia_192_cbc(void);
799 const EVP_CIPHER *EVP_camellia_192_cfb1(void);
800 const EVP_CIPHER *EVP_camellia_192_cfb8(void);
801 const EVP_CIPHER *EVP_camellia_192_cfb128(void);
802 # define EVP_camellia_192_cfb EVP_camellia_192_cfb128
803 const EVP_CIPHER *EVP_camellia_192_ofb(void);
804 const EVP_CIPHER *EVP_camellia_256_ecb(void);
805 const EVP_CIPHER *EVP_camellia_256_cbc(void);
806 const EVP_CIPHER *EVP_camellia_256_cfb1(void);
807 const EVP_CIPHER *EVP_camellia_256_cfb8(void);
808 const EVP_CIPHER *EVP_camellia_256_cfb128(void);
809 # define EVP_camellia_256_cfb EVP_camellia_256_cfb128
810 const EVP_CIPHER *EVP_camellia_256_ofb(void);
811 #endif
812 
813 #ifndef OPENSSL_NO_CHACHA
814 const EVP_CIPHER *EVP_chacha20(void);
815 #endif
816 
817 #ifndef OPENSSL_NO_GOST
818 const EVP_CIPHER *EVP_gost2814789_ecb(void);
819 const EVP_CIPHER *EVP_gost2814789_cfb64(void);
820 const EVP_CIPHER *EVP_gost2814789_cnt(void);
821 #endif
822 
823 void OPENSSL_add_all_algorithms_noconf(void);
824 void OPENSSL_add_all_algorithms_conf(void);
825 
826 #ifdef OPENSSL_LOAD_CONF
827 #define OpenSSL_add_all_algorithms() OPENSSL_add_all_algorithms_conf()
828 #else
829 #define OpenSSL_add_all_algorithms() OPENSSL_add_all_algorithms_noconf()
830 #endif
831 
832 void OpenSSL_add_all_ciphers(void);
833 void OpenSSL_add_all_digests(void);
834 
835 #define SSLeay_add_all_algorithms() OpenSSL_add_all_algorithms()
836 #define SSLeay_add_all_ciphers() OpenSSL_add_all_ciphers()
837 #define SSLeay_add_all_digests() OpenSSL_add_all_digests()
838 
839 int EVP_add_cipher(const EVP_CIPHER *cipher);
840 int EVP_add_digest(const EVP_MD *digest);
841 
842 const EVP_CIPHER *EVP_get_cipherbyname(const char *name);
843 const EVP_MD *EVP_get_digestbyname(const char *name);
844 void EVP_cleanup(void);
845 
846 void EVP_CIPHER_do_all(void (*fn)(const EVP_CIPHER *ciph, const char *from,
847     const char *to, void *x), void *arg);
848 void EVP_CIPHER_do_all_sorted(void (*fn)(const EVP_CIPHER *ciph,
849     const char *from, const char *to, void *x), void *arg);
850 
851 void EVP_MD_do_all(void (*fn)(const EVP_MD *ciph, const char *from,
852     const char *to, void *x), void *arg);
853 void EVP_MD_do_all_sorted(void (*fn)(const EVP_MD *ciph, const char *from,
854     const char *to, void *x), void *arg);
855 
856 int EVP_PKEY_decrypt_old(unsigned char *dec_key, const unsigned char *enc_key,
857     int enc_key_len, EVP_PKEY *private_key);
858 int EVP_PKEY_encrypt_old(unsigned char *enc_key, const unsigned char *key,
859     int key_len, EVP_PKEY *pub_key);
860 int EVP_PKEY_type(int type);
861 int EVP_PKEY_id(const EVP_PKEY *pkey);
862 int EVP_PKEY_base_id(const EVP_PKEY *pkey);
863 int EVP_PKEY_bits(EVP_PKEY *pkey);
864 int EVP_PKEY_size(EVP_PKEY *pkey);
865 int EVP_PKEY_set_type(EVP_PKEY *pkey, int type);
866 int EVP_PKEY_set_type_str(EVP_PKEY *pkey, const char *str, int len);
867 int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key);
868 void *EVP_PKEY_get0(EVP_PKEY *pkey);
869 
870 #ifndef OPENSSL_NO_RSA
871 struct rsa_st;
872 int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, struct rsa_st *key);
873 struct rsa_st *EVP_PKEY_get1_RSA(EVP_PKEY *pkey);
874 #endif
875 #ifndef OPENSSL_NO_DSA
876 struct dsa_st;
877 int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, struct dsa_st *key);
878 struct dsa_st *EVP_PKEY_get1_DSA(EVP_PKEY *pkey);
879 #endif
880 #ifndef OPENSSL_NO_DH
881 struct dh_st;
882 int EVP_PKEY_set1_DH(EVP_PKEY *pkey, struct dh_st *key);
883 struct dh_st *EVP_PKEY_get1_DH(EVP_PKEY *pkey);
884 #endif
885 #ifndef OPENSSL_NO_EC
886 struct ec_key_st;
887 int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, struct ec_key_st *key);
888 struct ec_key_st *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey);
889 #endif
890 #ifndef OPENSSL_NO_GOST
891 struct gost_key_st;
892 #endif
893 
894 EVP_PKEY *EVP_PKEY_new(void);
895 void EVP_PKEY_free(EVP_PKEY *pkey);
896 
897 EVP_PKEY *d2i_PublicKey(int type, EVP_PKEY **a, const unsigned char **pp,
898     long length);
899 int i2d_PublicKey(EVP_PKEY *a, unsigned char **pp);
900 
901 EVP_PKEY *d2i_PrivateKey(int type, EVP_PKEY **a, const unsigned char **pp,
902     long length);
903 EVP_PKEY *d2i_AutoPrivateKey(EVP_PKEY **a, const unsigned char **pp,
904     long length);
905 int i2d_PrivateKey(EVP_PKEY *a, unsigned char **pp);
906 
907 int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from);
908 int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey);
909 int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode);
910 int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b);
911 
912 int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b);
913 
914 int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey, int indent,
915     ASN1_PCTX *pctx);
916 int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey, int indent,
917     ASN1_PCTX *pctx);
918 int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey, int indent,
919     ASN1_PCTX *pctx);
920 
921 int EVP_PKEY_get_default_digest_nid(EVP_PKEY *pkey, int *pnid);
922 
923 int EVP_CIPHER_type(const EVP_CIPHER *ctx);
924 
925 /* calls methods */
926 int EVP_CIPHER_param_to_asn1(EVP_CIPHER_CTX *c, ASN1_TYPE *type);
927 int EVP_CIPHER_asn1_to_param(EVP_CIPHER_CTX *c, ASN1_TYPE *type);
928 
929 /* These are used by EVP_CIPHER methods */
930 int EVP_CIPHER_set_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type);
931 int EVP_CIPHER_get_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type);
932 
933 /* PKCS5 password based encryption */
934 int PKCS5_PBE_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
935     ASN1_TYPE *param, const EVP_CIPHER *cipher, const EVP_MD *md, int en_de);
936 int PKCS5_PBKDF2_HMAC_SHA1(const char *pass, int passlen,
937     const unsigned char *salt, int saltlen, int iter, int keylen,
938     unsigned char *out);
939 int PKCS5_PBKDF2_HMAC(const char *pass, int passlen, const unsigned char *salt,
940     int saltlen, int iter, const EVP_MD *digest, int keylen,
941     unsigned char *out);
942 int PKCS5_v2_PBE_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
943     ASN1_TYPE *param, const EVP_CIPHER *cipher, const EVP_MD *md,
944     int en_de);
945 
946 void PKCS5_PBE_add(void);
947 
948 int EVP_PBE_CipherInit (ASN1_OBJECT *pbe_obj, const char *pass, int passlen,
949     ASN1_TYPE *param, EVP_CIPHER_CTX *ctx, int en_de);
950 
951 /* PBE type */
952 
953 /* Can appear as the outermost AlgorithmIdentifier */
954 #define EVP_PBE_TYPE_OUTER	0x0
955 /* Is an PRF type OID */
956 #define EVP_PBE_TYPE_PRF	0x1
957 
958 int EVP_PBE_alg_add_type(int pbe_type, int pbe_nid, int cipher_nid, int md_nid,
959     EVP_PBE_KEYGEN *keygen);
960 int EVP_PBE_alg_add(int nid, const EVP_CIPHER *cipher, const EVP_MD *md,
961     EVP_PBE_KEYGEN *keygen);
962 int EVP_PBE_find(int type, int pbe_nid, int *pcnid, int *pmnid,
963     EVP_PBE_KEYGEN **pkeygen);
964 void EVP_PBE_cleanup(void);
965 
966 #define ASN1_PKEY_ALIAS		0x1
967 #define ASN1_PKEY_DYNAMIC	0x2
968 #define ASN1_PKEY_SIGPARAM_NULL	0x4
969 
970 #define ASN1_PKEY_CTRL_PKCS7_SIGN	0x1
971 #define ASN1_PKEY_CTRL_PKCS7_ENCRYPT	0x2
972 #define ASN1_PKEY_CTRL_DEFAULT_MD_NID	0x3
973 #define ASN1_PKEY_CTRL_CMS_SIGN		0x5
974 #define ASN1_PKEY_CTRL_CMS_ENVELOPE	0x7
975 
976 int EVP_PKEY_asn1_get_count(void);
977 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_get0(int idx);
978 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find(ENGINE **pe, int type);
979 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find_str(ENGINE **pe,
980     const char *str, int len);
981 int EVP_PKEY_asn1_add0(const EVP_PKEY_ASN1_METHOD *ameth);
982 int EVP_PKEY_asn1_add_alias(int to, int from);
983 int EVP_PKEY_asn1_get0_info(int *ppkey_id, int *pkey_base_id, int *ppkey_flags,
984     const char **pinfo, const char **ppem_str,
985     const EVP_PKEY_ASN1_METHOD *ameth);
986 
987 const EVP_PKEY_ASN1_METHOD* EVP_PKEY_get0_asn1(EVP_PKEY *pkey);
988 EVP_PKEY_ASN1_METHOD* EVP_PKEY_asn1_new(int id, int flags, const char *pem_str,
989     const char *info);
990 void EVP_PKEY_asn1_copy(EVP_PKEY_ASN1_METHOD *dst,
991     const EVP_PKEY_ASN1_METHOD *src);
992 void EVP_PKEY_asn1_free(EVP_PKEY_ASN1_METHOD *ameth);
993 void EVP_PKEY_asn1_set_public(EVP_PKEY_ASN1_METHOD *ameth,
994     int (*pub_decode)(EVP_PKEY *pk, X509_PUBKEY *pub),
995     int (*pub_encode)(X509_PUBKEY *pub, const EVP_PKEY *pk),
996     int (*pub_cmp)(const EVP_PKEY *a, const EVP_PKEY *b),
997     int (*pub_print)(BIO *out, const EVP_PKEY *pkey, int indent,
998     ASN1_PCTX *pctx),
999     int (*pkey_size)(const EVP_PKEY *pk),
1000     int (*pkey_bits)(const EVP_PKEY *pk));
1001 void EVP_PKEY_asn1_set_private(EVP_PKEY_ASN1_METHOD *ameth,
1002     int (*priv_decode)(EVP_PKEY *pk, PKCS8_PRIV_KEY_INFO *p8inf),
1003     int (*priv_encode)(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pk),
1004     int (*priv_print)(BIO *out, const EVP_PKEY *pkey, int indent,
1005     ASN1_PCTX *pctx));
1006 void EVP_PKEY_asn1_set_param(EVP_PKEY_ASN1_METHOD *ameth,
1007     int (*param_decode)(EVP_PKEY *pkey, const unsigned char **pder, int derlen),
1008     int (*param_encode)(const EVP_PKEY *pkey, unsigned char **pder),
1009     int (*param_missing)(const EVP_PKEY *pk),
1010     int (*param_copy)(EVP_PKEY *to, const EVP_PKEY *from),
1011     int (*param_cmp)(const EVP_PKEY *a, const EVP_PKEY *b),
1012     int (*param_print)(BIO *out, const EVP_PKEY *pkey, int indent,
1013     ASN1_PCTX *pctx));
1014 
1015 void EVP_PKEY_asn1_set_free(EVP_PKEY_ASN1_METHOD *ameth,
1016     void (*pkey_free)(EVP_PKEY *pkey));
1017 void EVP_PKEY_asn1_set_ctrl(EVP_PKEY_ASN1_METHOD *ameth,
1018     int (*pkey_ctrl)(EVP_PKEY *pkey, int op, long arg1, void *arg2));
1019 
1020 #define EVP_PKEY_OP_UNDEFINED		0
1021 #define EVP_PKEY_OP_PARAMGEN		(1<<1)
1022 #define EVP_PKEY_OP_KEYGEN		(1<<2)
1023 #define EVP_PKEY_OP_SIGN		(1<<3)
1024 #define EVP_PKEY_OP_VERIFY		(1<<4)
1025 #define EVP_PKEY_OP_VERIFYRECOVER	(1<<5)
1026 #define EVP_PKEY_OP_SIGNCTX		(1<<6)
1027 #define EVP_PKEY_OP_VERIFYCTX		(1<<7)
1028 #define EVP_PKEY_OP_ENCRYPT		(1<<8)
1029 #define EVP_PKEY_OP_DECRYPT		(1<<9)
1030 #define EVP_PKEY_OP_DERIVE		(1<<10)
1031 
1032 #define EVP_PKEY_OP_TYPE_SIG	\
1033 	(EVP_PKEY_OP_SIGN | EVP_PKEY_OP_VERIFY | EVP_PKEY_OP_VERIFYRECOVER \
1034 		| EVP_PKEY_OP_SIGNCTX | EVP_PKEY_OP_VERIFYCTX)
1035 
1036 #define EVP_PKEY_OP_TYPE_CRYPT \
1037 	(EVP_PKEY_OP_ENCRYPT | EVP_PKEY_OP_DECRYPT)
1038 
1039 #define EVP_PKEY_OP_TYPE_NOGEN \
1040 	(EVP_PKEY_OP_SIG | EVP_PKEY_OP_CRYPT | EVP_PKEY_OP_DERIVE)
1041 
1042 #define EVP_PKEY_OP_TYPE_GEN \
1043 		(EVP_PKEY_OP_PARAMGEN | EVP_PKEY_OP_KEYGEN)
1044 
1045 #define	 EVP_PKEY_CTX_set_signature_md(ctx, md)	\
1046 		EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,  \
1047 					EVP_PKEY_CTRL_MD, 0, (void *)md)
1048 
1049 #define EVP_PKEY_CTRL_MD		1
1050 #define EVP_PKEY_CTRL_PEER_KEY		2
1051 
1052 #define EVP_PKEY_CTRL_PKCS7_ENCRYPT	3
1053 #define EVP_PKEY_CTRL_PKCS7_DECRYPT	4
1054 
1055 #define EVP_PKEY_CTRL_PKCS7_SIGN	5
1056 
1057 #define EVP_PKEY_CTRL_SET_MAC_KEY	6
1058 
1059 #define EVP_PKEY_CTRL_DIGESTINIT	7
1060 
1061 /* Used by GOST key encryption in TLS */
1062 #define EVP_PKEY_CTRL_SET_IV 		8
1063 
1064 #define EVP_PKEY_CTRL_CMS_ENCRYPT	9
1065 #define EVP_PKEY_CTRL_CMS_DECRYPT	10
1066 #define EVP_PKEY_CTRL_CMS_SIGN		11
1067 
1068 #define EVP_PKEY_CTRL_CIPHER		12
1069 
1070 #define EVP_PKEY_ALG_CTRL		0x1000
1071 
1072 
1073 #define EVP_PKEY_FLAG_AUTOARGLEN	2
1074 /* Method handles all operations: don't assume any digest related
1075  * defaults.
1076  */
1077 #define EVP_PKEY_FLAG_SIGCTX_CUSTOM	4
1078 
1079 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type);
1080 EVP_PKEY_METHOD* EVP_PKEY_meth_new(int id, int flags);
1081 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
1082     const EVP_PKEY_METHOD *meth);
1083 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src);
1084 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth);
1085 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth);
1086 
1087 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e);
1088 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e);
1089 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(EVP_PKEY_CTX *ctx);
1090 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx);
1091 
1092 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype, int cmd,
1093     int p1, void *p2);
1094 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx, const char *type,
1095     const char *value);
1096 
1097 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx);
1098 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen);
1099 
1100 EVP_PKEY *EVP_PKEY_new_mac_key(int type, ENGINE *e, const unsigned char *key,
1101     int keylen);
1102 
1103 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data);
1104 void *EVP_PKEY_CTX_get_data(EVP_PKEY_CTX *ctx);
1105 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx);
1106 
1107 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx);
1108 
1109 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data);
1110 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx);
1111 
1112 int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx);
1113 int EVP_PKEY_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
1114     const unsigned char *tbs, size_t tbslen);
1115 int EVP_PKEY_verify_init(EVP_PKEY_CTX *ctx);
1116 int EVP_PKEY_verify(EVP_PKEY_CTX *ctx, const unsigned char *sig, size_t siglen,
1117     const unsigned char *tbs, size_t tbslen);
1118 int EVP_PKEY_verify_recover_init(EVP_PKEY_CTX *ctx);
1119 int EVP_PKEY_verify_recover(EVP_PKEY_CTX *ctx, unsigned char *rout,
1120     size_t *routlen, const unsigned char *sig, size_t siglen);
1121 int EVP_PKEY_encrypt_init(EVP_PKEY_CTX *ctx);
1122 int EVP_PKEY_encrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
1123     const unsigned char *in, size_t inlen);
1124 int EVP_PKEY_decrypt_init(EVP_PKEY_CTX *ctx);
1125 int EVP_PKEY_decrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
1126     const unsigned char *in, size_t inlen);
1127 
1128 int EVP_PKEY_derive_init(EVP_PKEY_CTX *ctx);
1129 int EVP_PKEY_derive_set_peer(EVP_PKEY_CTX *ctx, EVP_PKEY *peer);
1130 int EVP_PKEY_derive(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen);
1131 
1132 typedef int EVP_PKEY_gen_cb(EVP_PKEY_CTX *ctx);
1133 
1134 int EVP_PKEY_paramgen_init(EVP_PKEY_CTX *ctx);
1135 int EVP_PKEY_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY **ppkey);
1136 int EVP_PKEY_keygen_init(EVP_PKEY_CTX *ctx);
1137 int EVP_PKEY_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY **ppkey);
1138 
1139 void EVP_PKEY_CTX_set_cb(EVP_PKEY_CTX *ctx, EVP_PKEY_gen_cb *cb);
1140 EVP_PKEY_gen_cb *EVP_PKEY_CTX_get_cb(EVP_PKEY_CTX *ctx);
1141 
1142 int EVP_PKEY_CTX_get_keygen_info(EVP_PKEY_CTX *ctx, int idx);
1143 
1144 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
1145     int (*init)(EVP_PKEY_CTX *ctx));
1146 
1147 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
1148     int (*copy)(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src));
1149 
1150 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
1151     void (*cleanup)(EVP_PKEY_CTX *ctx));
1152 
1153 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
1154     int (*paramgen_init)(EVP_PKEY_CTX *ctx),
1155     int (*paramgen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey));
1156 
1157 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
1158     int (*keygen_init)(EVP_PKEY_CTX *ctx),
1159     int (*keygen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey));
1160 
1161 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
1162     int (*sign_init)(EVP_PKEY_CTX *ctx),
1163     int (*sign)(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
1164     const unsigned char *tbs, size_t tbslen));
1165 
1166 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
1167     int (*verify_init)(EVP_PKEY_CTX *ctx),
1168     int (*verify)(EVP_PKEY_CTX *ctx, const unsigned char *sig, size_t siglen,
1169     const unsigned char *tbs, size_t tbslen));
1170 
1171 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
1172     int (*verify_recover_init)(EVP_PKEY_CTX *ctx),
1173     int (*verify_recover)(EVP_PKEY_CTX *ctx, unsigned char *sig,
1174     size_t *siglen, const unsigned char *tbs, size_t tbslen));
1175 
1176 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
1177     int (*signctx_init)(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx),
1178     int (*signctx)(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
1179     EVP_MD_CTX *mctx));
1180 
1181 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
1182     int (*verifyctx_init)(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx),
1183     int (*verifyctx)(EVP_PKEY_CTX *ctx, const unsigned char *sig, int siglen,
1184     EVP_MD_CTX *mctx));
1185 
1186 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
1187     int (*encrypt_init)(EVP_PKEY_CTX *ctx),
1188     int (*encryptfn)(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
1189     const unsigned char *in, size_t inlen));
1190 
1191 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
1192     int (*decrypt_init)(EVP_PKEY_CTX *ctx),
1193     int (*decrypt)(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
1194     const unsigned char *in, size_t inlen));
1195 
1196 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
1197     int (*derive_init)(EVP_PKEY_CTX *ctx),
1198     int (*derive)(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen));
1199 
1200 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
1201     int (*ctrl)(EVP_PKEY_CTX *ctx, int type, int p1, void *p2),
1202     int (*ctrl_str)(EVP_PKEY_CTX *ctx, const char *type, const char *value));
1203 
1204 /* Authenticated Encryption with Additional Data.
1205  *
1206  * AEAD couples confidentiality and integrity in a single primtive. AEAD
1207  * algorithms take a key and then can seal and open individual messages. Each
1208  * message has a unique, per-message nonce and, optionally, additional data
1209  * which is authenticated but not included in the output. */
1210 
1211 struct evp_aead_st;
1212 typedef struct evp_aead_st EVP_AEAD;
1213 
1214 #ifndef OPENSSL_NO_AES
1215 /* EVP_aes_128_gcm is AES-128 in Galois Counter Mode. */
1216 const EVP_AEAD *EVP_aead_aes_128_gcm(void);
1217 /* EVP_aes_256_gcm is AES-256 in Galois Counter Mode. */
1218 const EVP_AEAD *EVP_aead_aes_256_gcm(void);
1219 #endif
1220 
1221 #if !defined(OPENSSL_NO_CHACHA) && !defined(OPENSSL_NO_POLY1305)
1222 /* EVP_aead_chacha20_poly1305 is ChaCha20 with a Poly1305 authenticator. */
1223 const EVP_AEAD *EVP_aead_chacha20_poly1305(void);
1224 const EVP_AEAD *EVP_aead_chacha20_poly1305_old(void);
1225 #endif
1226 
1227 /* EVP_AEAD_key_length returns the length of the keys used. */
1228 size_t EVP_AEAD_key_length(const EVP_AEAD *aead);
1229 
1230 /* EVP_AEAD_nonce_length returns the length of the per-message nonce. */
1231 size_t EVP_AEAD_nonce_length(const EVP_AEAD *aead);
1232 
1233 /* EVP_AEAD_max_overhead returns the maximum number of additional bytes added
1234  * by the act of sealing data with the AEAD. */
1235 size_t EVP_AEAD_max_overhead(const EVP_AEAD *aead);
1236 
1237 /* EVP_AEAD_max_tag_len returns the maximum tag length when using this AEAD.
1238  * This * is the largest value that can be passed as a tag length to
1239  * EVP_AEAD_CTX_init. */
1240 size_t EVP_AEAD_max_tag_len(const EVP_AEAD *aead);
1241 
1242 /* An EVP_AEAD_CTX represents an AEAD algorithm configured with a specific key
1243  * and message-independent IV. */
1244 typedef struct evp_aead_ctx_st {
1245 	const EVP_AEAD *aead;
1246 	/* aead_state is an opaque pointer to the AEAD specific state. */
1247 	void *aead_state;
1248 } EVP_AEAD_CTX;
1249 
1250 /* EVP_AEAD_MAX_TAG_LENGTH is the maximum tag length used by any AEAD
1251  * defined in this header. */
1252 #define EVP_AEAD_MAX_TAG_LENGTH 16
1253 
1254 /* EVP_AEAD_DEFAULT_TAG_LENGTH is a magic value that can be passed to
1255  * EVP_AEAD_CTX_init to indicate that the default tag length for an AEAD
1256  * should be used. */
1257 #define EVP_AEAD_DEFAULT_TAG_LENGTH 0
1258 
1259 /* EVP_AEAD_init initializes the context for the given AEAD algorithm.
1260  * The implementation argument may be NULL to choose the default implementation.
1261  * Authentication tags may be truncated by passing a tag length. A tag length
1262  * of zero indicates the default tag length should be used. */
1263 int EVP_AEAD_CTX_init(EVP_AEAD_CTX *ctx, const EVP_AEAD *aead,
1264     const unsigned char *key, size_t key_len, size_t tag_len, ENGINE *impl);
1265 
1266 /* EVP_AEAD_CTX_cleanup frees any data allocated for this context. */
1267 void EVP_AEAD_CTX_cleanup(EVP_AEAD_CTX *ctx);
1268 
1269 /* EVP_AEAD_CTX_seal encrypts and authenticates the input and authenticates
1270  * any additional data (AD), the result being written as output. One is
1271  * returned on success, otherwise zero.
1272  *
1273  * This function may be called (with the same EVP_AEAD_CTX) concurrently with
1274  * itself or EVP_AEAD_CTX_open.
1275  *
1276  * At most max_out_len bytes are written as output and, in order to ensure
1277  * success, this value should be the length of the input plus the result of
1278  * EVP_AEAD_overhead. On successful return, out_len is set to the actual
1279  * number of bytes written.
1280  *
1281  * The length of the nonce is must be equal to the result of
1282  * EVP_AEAD_nonce_length for this AEAD.
1283  *
1284  * EVP_AEAD_CTX_seal never results in a partial output. If max_out_len is
1285  * insufficient, zero will be returned and out_len will be set to zero.
1286  *
1287  * If the input and output are aliased then out must be <= in. */
1288 int EVP_AEAD_CTX_seal(const EVP_AEAD_CTX *ctx, unsigned char *out,
1289     size_t *out_len, size_t max_out_len, const unsigned char *nonce,
1290     size_t nonce_len, const unsigned char *in, size_t in_len,
1291     const unsigned char *ad, size_t ad_len);
1292 
1293 /* EVP_AEAD_CTX_open authenticates the input and additional data, decrypting
1294  * the input and writing it as output. One is returned on success, otherwise
1295  * zero.
1296  *
1297  * This function may be called (with the same EVP_AEAD_CTX) concurrently with
1298  * itself or EVP_AEAD_CTX_seal.
1299  *
1300  * At most the number of input bytes are written as output. In order to ensure
1301  * success, max_out_len should be at least the same as the input length. On
1302  * successful return out_len is set to the actual number of bytes written.
1303  *
1304  * The length of nonce must be equal to the result of EVP_AEAD_nonce_length
1305  * for this AEAD.
1306  *
1307  * EVP_AEAD_CTX_open never results in a partial output. If max_out_len is
1308  * insufficient, zero will be returned and out_len will be set to zero.
1309  *
1310  * If the input and output are aliased then out must be <= in. */
1311 int EVP_AEAD_CTX_open(const EVP_AEAD_CTX *ctx, unsigned char *out,
1312     size_t *out_len, size_t max_out_len, const unsigned char *nonce,
1313     size_t nonce_len, const unsigned char *in, size_t in_len,
1314     const unsigned char *ad, size_t ad_len);
1315 
1316 void EVP_add_alg_module(void);
1317 
1318 /* BEGIN ERROR CODES */
1319 /* The following lines are auto generated by the script mkerr.pl. Any changes
1320  * made after this point may be overwritten when the script is next run.
1321  */
1322 void ERR_load_EVP_strings(void);
1323 
1324 /* Error codes for the EVP functions. */
1325 
1326 /* Function codes. */
1327 #define EVP_F_AEAD_AES_GCM_INIT				 187
1328 #define EVP_F_AEAD_AES_GCM_OPEN				 188
1329 #define EVP_F_AEAD_AES_GCM_SEAL				 189
1330 #define EVP_F_AEAD_CHACHA20_POLY1305_INIT		 192
1331 #define EVP_F_AEAD_CHACHA20_POLY1305_OPEN		 193
1332 #define EVP_F_AEAD_CHACHA20_POLY1305_SEAL		 194
1333 #define EVP_F_AEAD_CTX_OPEN				 185
1334 #define EVP_F_AEAD_CTX_SEAL				 186
1335 #define EVP_F_AESNI_INIT_KEY				 165
1336 #define EVP_F_AESNI_XTS_CIPHER				 176
1337 #define EVP_F_AES_INIT_KEY				 133
1338 #define EVP_F_AES_XTS					 172
1339 #define EVP_F_AES_XTS_CIPHER				 175
1340 #define EVP_F_ALG_MODULE_INIT				 177
1341 #define EVP_F_CAMELLIA_INIT_KEY				 159
1342 #define EVP_F_CMAC_INIT					 173
1343 #define EVP_F_D2I_PKEY					 100
1344 #define EVP_F_DO_SIGVER_INIT				 161
1345 #define EVP_F_DSAPKEY2PKCS8				 134
1346 #define EVP_F_DSA_PKEY2PKCS8				 135
1347 #define EVP_F_ECDSA_PKEY2PKCS8				 129
1348 #define EVP_F_ECKEY_PKEY2PKCS8				 132
1349 #define EVP_F_EVP_AEAD_CTX_INIT				 180
1350 #define EVP_F_EVP_AEAD_CTX_OPEN				 190
1351 #define EVP_F_EVP_AEAD_CTX_SEAL				 191
1352 #define EVP_F_EVP_BYTESTOKEY				 200
1353 #define EVP_F_EVP_CIPHERINIT_EX				 123
1354 #define EVP_F_EVP_CIPHER_CTX_COPY			 163
1355 #define EVP_F_EVP_CIPHER_CTX_CTRL			 124
1356 #define EVP_F_EVP_CIPHER_CTX_SET_KEY_LENGTH		 122
1357 #define EVP_F_EVP_CIPHER_GET_ASN1_IV			 201
1358 #define EVP_F_EVP_CIPHER_SET_ASN1_IV			 202
1359 #define EVP_F_EVP_DECRYPTFINAL_EX			 101
1360 #define EVP_F_EVP_DECRYPTUPDATE				 199
1361 #define EVP_F_EVP_DIGESTFINAL_EX			 196
1362 #define EVP_F_EVP_DIGESTINIT_EX				 128
1363 #define EVP_F_EVP_ENCRYPTFINAL_EX			 127
1364 #define EVP_F_EVP_ENCRYPTUPDATE				 198
1365 #define EVP_F_EVP_MD_CTX_COPY_EX			 110
1366 #define EVP_F_EVP_MD_CTX_CTRL				 195
1367 #define EVP_F_EVP_MD_SIZE				 162
1368 #define EVP_F_EVP_OPENINIT				 102
1369 #define EVP_F_EVP_PBE_ALG_ADD				 115
1370 #define EVP_F_EVP_PBE_ALG_ADD_TYPE			 160
1371 #define EVP_F_EVP_PBE_CIPHERINIT			 116
1372 #define EVP_F_EVP_PKCS82PKEY				 111
1373 #define EVP_F_EVP_PKCS82PKEY_BROKEN			 136
1374 #define EVP_F_EVP_PKEY2PKCS8_BROKEN			 113
1375 #define EVP_F_EVP_PKEY_COPY_PARAMETERS			 103
1376 #define EVP_F_EVP_PKEY_CTX_CTRL				 137
1377 #define EVP_F_EVP_PKEY_CTX_CTRL_STR			 150
1378 #define EVP_F_EVP_PKEY_CTX_DUP				 156
1379 #define EVP_F_EVP_PKEY_DECRYPT				 104
1380 #define EVP_F_EVP_PKEY_DECRYPT_INIT			 138
1381 #define EVP_F_EVP_PKEY_DECRYPT_OLD			 151
1382 #define EVP_F_EVP_PKEY_DERIVE				 153
1383 #define EVP_F_EVP_PKEY_DERIVE_INIT			 154
1384 #define EVP_F_EVP_PKEY_DERIVE_SET_PEER			 155
1385 #define EVP_F_EVP_PKEY_ENCRYPT				 105
1386 #define EVP_F_EVP_PKEY_ENCRYPT_INIT			 139
1387 #define EVP_F_EVP_PKEY_ENCRYPT_OLD			 152
1388 #define EVP_F_EVP_PKEY_GET1_DH				 119
1389 #define EVP_F_EVP_PKEY_GET1_DSA				 120
1390 #define EVP_F_EVP_PKEY_GET1_ECDSA			 130
1391 #define EVP_F_EVP_PKEY_GET1_EC_KEY			 131
1392 #define EVP_F_EVP_PKEY_GET1_RSA				 121
1393 #define EVP_F_EVP_PKEY_KEYGEN				 146
1394 #define EVP_F_EVP_PKEY_KEYGEN_INIT			 147
1395 #define EVP_F_EVP_PKEY_NEW				 106
1396 #define EVP_F_EVP_PKEY_PARAMGEN				 148
1397 #define EVP_F_EVP_PKEY_PARAMGEN_INIT			 149
1398 #define EVP_F_EVP_PKEY_SIGN				 140
1399 #define EVP_F_EVP_PKEY_SIGN_INIT			 141
1400 #define EVP_F_EVP_PKEY_VERIFY				 142
1401 #define EVP_F_EVP_PKEY_VERIFY_INIT			 143
1402 #define EVP_F_EVP_PKEY_VERIFY_RECOVER			 144
1403 #define EVP_F_EVP_PKEY_VERIFY_RECOVER_INIT		 145
1404 #define EVP_F_EVP_RIJNDAEL				 126
1405 #define EVP_F_EVP_SIGNFINAL				 107
1406 #define EVP_F_EVP_VERIFYFINAL				 108
1407 #define EVP_F_FIPS_CIPHERINIT				 166
1408 #define EVP_F_FIPS_CIPHER_CTX_COPY			 170
1409 #define EVP_F_FIPS_CIPHER_CTX_CTRL			 167
1410 #define EVP_F_FIPS_CIPHER_CTX_SET_KEY_LENGTH		 171
1411 #define EVP_F_FIPS_DIGESTINIT				 168
1412 #define EVP_F_FIPS_MD_CTX_COPY				 169
1413 #define EVP_F_HMAC_INIT_EX				 174
1414 #define EVP_F_INT_CTX_NEW				 157
1415 #define EVP_F_PKCS5_PBE_KEYIVGEN			 117
1416 #define EVP_F_PKCS5_V2_PBE_KEYIVGEN			 118
1417 #define EVP_F_PKCS5_V2_PBKDF2_KEYIVGEN			 164
1418 #define EVP_F_PKCS8_SET_BROKEN				 112
1419 #define EVP_F_PKEY_SET_TYPE				 158
1420 #define EVP_F_RC2_GET_ASN1_TYPE_AND_IV			 197
1421 #define EVP_F_RC2_MAGIC_TO_METH				 109
1422 #define EVP_F_RC5_CTRL					 125
1423 
1424 /* Reason codes. */
1425 #define EVP_R_AES_IV_SETUP_FAILED			 162
1426 #define EVP_R_AES_KEY_SETUP_FAILED			 143
1427 #define EVP_R_ASN1_LIB					 140
1428 #define EVP_R_BAD_BLOCK_LENGTH				 136
1429 #define EVP_R_BAD_DECRYPT				 100
1430 #define EVP_R_BAD_KEY_LENGTH				 137
1431 #define EVP_R_BN_DECODE_ERROR				 112
1432 #define EVP_R_BN_PUBKEY_ERROR				 113
1433 #define EVP_R_BUFFER_TOO_SMALL				 155
1434 #define EVP_R_CAMELLIA_KEY_SETUP_FAILED			 157
1435 #define EVP_R_CIPHER_PARAMETER_ERROR			 122
1436 #define EVP_R_COMMAND_NOT_SUPPORTED			 147
1437 #define EVP_R_CTRL_NOT_IMPLEMENTED			 132
1438 #define EVP_R_CTRL_OPERATION_NOT_IMPLEMENTED		 133
1439 #define EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH		 138
1440 #define EVP_R_DECODE_ERROR				 114
1441 #define EVP_R_DIFFERENT_KEY_TYPES			 101
1442 #define EVP_R_DIFFERENT_PARAMETERS			 153
1443 #define EVP_R_DISABLED_FOR_FIPS				 163
1444 #define EVP_R_ENCODE_ERROR				 115
1445 #define EVP_R_ERROR_LOADING_SECTION			 165
1446 #define EVP_R_ERROR_SETTING_FIPS_MODE			 166
1447 #define EVP_R_EVP_PBE_CIPHERINIT_ERROR			 119
1448 #define EVP_R_EXPECTING_AN_RSA_KEY			 127
1449 #define EVP_R_EXPECTING_A_DH_KEY			 128
1450 #define EVP_R_EXPECTING_A_DSA_KEY			 129
1451 #define EVP_R_EXPECTING_A_ECDSA_KEY			 141
1452 #define EVP_R_EXPECTING_A_EC_KEY			 142
1453 #define EVP_R_FIPS_MODE_NOT_SUPPORTED			 167
1454 #define EVP_R_INITIALIZATION_ERROR			 134
1455 #define EVP_R_INPUT_NOT_INITIALIZED			 111
1456 #define EVP_R_INVALID_DIGEST				 152
1457 #define EVP_R_INVALID_FIPS_MODE				 168
1458 #define EVP_R_INVALID_KEY_LENGTH			 130
1459 #define EVP_R_INVALID_OPERATION				 148
1460 #define EVP_R_IV_TOO_LARGE				 102
1461 #define EVP_R_KEYGEN_FAILURE				 120
1462 #define EVP_R_MESSAGE_DIGEST_IS_NULL			 159
1463 #define EVP_R_METHOD_NOT_SUPPORTED			 144
1464 #define EVP_R_MISSING_PARAMETERS			 103
1465 #define EVP_R_NO_CIPHER_SET				 131
1466 #define EVP_R_NO_DEFAULT_DIGEST				 158
1467 #define EVP_R_NO_DIGEST_SET				 139
1468 #define EVP_R_NO_DSA_PARAMETERS				 116
1469 #define EVP_R_NO_KEY_SET				 154
1470 #define EVP_R_NO_OPERATION_SET				 149
1471 #define EVP_R_NO_SIGN_FUNCTION_CONFIGURED		 104
1472 #define EVP_R_NO_VERIFY_FUNCTION_CONFIGURED		 105
1473 #define EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE	 150
1474 #define EVP_R_OPERATON_NOT_INITIALIZED			 151
1475 #define EVP_R_OUTPUT_ALIASES_INPUT			 172
1476 #define EVP_R_PKCS8_UNKNOWN_BROKEN_TYPE			 117
1477 #define EVP_R_PRIVATE_KEY_DECODE_ERROR			 145
1478 #define EVP_R_PRIVATE_KEY_ENCODE_ERROR			 146
1479 #define EVP_R_PUBLIC_KEY_NOT_RSA			 106
1480 #define EVP_R_TAG_TOO_LARGE				 171
1481 #define EVP_R_TOO_LARGE					 164
1482 #define EVP_R_UNKNOWN_CIPHER				 160
1483 #define EVP_R_UNKNOWN_DIGEST				 161
1484 #define EVP_R_UNKNOWN_OPTION				 169
1485 #define EVP_R_UNKNOWN_PBE_ALGORITHM			 121
1486 #define EVP_R_UNSUPORTED_NUMBER_OF_ROUNDS		 135
1487 #define EVP_R_UNSUPPORTED_ALGORITHM			 156
1488 #define EVP_R_UNSUPPORTED_CIPHER			 107
1489 #define EVP_R_UNSUPPORTED_KEYLENGTH			 123
1490 #define EVP_R_UNSUPPORTED_KEY_DERIVATION_FUNCTION	 124
1491 #define EVP_R_UNSUPPORTED_KEY_SIZE			 108
1492 #define EVP_R_UNSUPPORTED_PRF				 125
1493 #define EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM		 118
1494 #define EVP_R_UNSUPPORTED_SALT_TYPE			 126
1495 #define EVP_R_WRONG_FINAL_BLOCK_LENGTH			 109
1496 #define EVP_R_WRONG_PUBLIC_KEY_TYPE			 110
1497 
1498 #ifdef  __cplusplus
1499 }
1500 #endif
1501 #endif
1502