xref: /openbsd/lib/libcrypto/evp/evp.h (revision d89ec533)
1 /* $OpenBSD: evp.h,v 1.88 2021/12/12 21:35:46 tb 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_RSA_PSS NID_rsassaPss
103 #define EVP_PKEY_RSA2	NID_rsa
104 #define EVP_PKEY_DSA	NID_dsa
105 #define EVP_PKEY_DSA1	NID_dsa_2
106 #define EVP_PKEY_DSA2	NID_dsaWithSHA
107 #define EVP_PKEY_DSA3	NID_dsaWithSHA1
108 #define EVP_PKEY_DSA4	NID_dsaWithSHA1_2
109 #define EVP_PKEY_DH	NID_dhKeyAgreement
110 #define EVP_PKEY_EC	NID_X9_62_id_ecPublicKey
111 #define EVP_PKEY_GOSTR01 NID_id_GostR3410_2001
112 #define EVP_PKEY_GOSTIMIT NID_id_Gost28147_89_MAC
113 #define EVP_PKEY_HMAC	NID_hmac
114 #define EVP_PKEY_CMAC	NID_cmac
115 #define EVP_PKEY_GOSTR12_256 NID_id_tc26_gost3410_2012_256
116 #define EVP_PKEY_GOSTR12_512 NID_id_tc26_gost3410_2012_512
117 
118 #ifdef	__cplusplus
119 extern "C" {
120 #endif
121 
122 /* Move to evp_locl.h */
123 /* Type needs to be a bit field
124  * Sub-type needs to be for variations on the method, as in, can it do
125  * arbitrary encryption.... */
126 struct evp_pkey_st {
127 	int type;
128 	int save_type;
129 	int references;
130 	const EVP_PKEY_ASN1_METHOD *ameth;
131 	ENGINE *engine;
132 	union	{
133 		char *ptr;
134 #ifndef OPENSSL_NO_RSA
135 		struct rsa_st *rsa;	/* RSA */
136 #endif
137 #ifndef OPENSSL_NO_DSA
138 		struct dsa_st *dsa;	/* DSA */
139 #endif
140 #ifndef OPENSSL_NO_DH
141 		struct dh_st *dh;	/* DH */
142 #endif
143 #ifndef OPENSSL_NO_EC
144 		struct ec_key_st *ec;	/* ECC */
145 #endif
146 #ifndef OPENSSL_NO_GOST
147 		struct gost_key_st *gost; /* GOST */
148 #endif
149 	} pkey;
150 	int save_parameters;
151 	STACK_OF(X509_ATTRIBUTE) *attributes; /* [ 0 ] */
152 } /* EVP_PKEY */;
153 
154 #define EVP_PKEY_MO_SIGN	0x0001
155 #define EVP_PKEY_MO_VERIFY	0x0002
156 #define EVP_PKEY_MO_ENCRYPT	0x0004
157 #define EVP_PKEY_MO_DECRYPT	0x0008
158 
159 typedef int evp_sign_method(int type, const unsigned char *m,
160     unsigned int m_length, unsigned char *sigret, unsigned int *siglen,
161     void *key);
162 typedef int evp_verify_method(int type, const unsigned char *m,
163     unsigned int m_length, const unsigned char *sigbuf, unsigned int siglen,
164     void *key);
165 
166 #ifndef EVP_MD
167 /* Move to evp_locl.h */
168 struct env_md_st {
169 	int type;
170 	int pkey_type;
171 	int md_size;
172 	unsigned long flags;
173 	int (*init)(EVP_MD_CTX *ctx);
174 	int (*update)(EVP_MD_CTX *ctx, const void *data, size_t count);
175 	int (*final)(EVP_MD_CTX *ctx, unsigned char *md);
176 	int (*copy)(EVP_MD_CTX *to, const EVP_MD_CTX *from);
177 	int (*cleanup)(EVP_MD_CTX *ctx);
178 
179 	evp_sign_method *sign;
180 	evp_verify_method *verify;
181 	int required_pkey_type[5]; /*EVP_PKEY_xxx */
182 	int block_size;
183 	int ctx_size; /* how big does the ctx->md_data need to be */
184 	/* control function */
185 	int (*md_ctrl)(EVP_MD_CTX *ctx, int cmd, int p1, void *p2);
186 } /* EVP_MD */;
187 
188 #define EVP_MD_FLAG_ONESHOT	0x0001 /* digest can only handle a single
189 					* block */
190 
191 #define EVP_MD_FLAG_PKEY_DIGEST	0x0002 /* digest is a "clone" digest used
192 					* which is a copy of an existing
193 					* one for a specific public key type.
194 					* EVP_dss1() etc */
195 
196 /* Digest uses EVP_PKEY_METHOD for signing instead of MD specific signing */
197 
198 #define EVP_MD_FLAG_PKEY_METHOD_SIGNATURE	0x0004
199 
200 /* DigestAlgorithmIdentifier flags... */
201 
202 #define EVP_MD_FLAG_DIGALGID_MASK		0x0018
203 
204 /* NULL or absent parameter accepted. Use NULL */
205 
206 #define EVP_MD_FLAG_DIGALGID_NULL		0x0000
207 
208 /* NULL or absent parameter accepted. Use NULL for PKCS#1 otherwise absent */
209 
210 #define EVP_MD_FLAG_DIGALGID_ABSENT		0x0008
211 
212 /* Custom handling via ctrl */
213 
214 #define EVP_MD_FLAG_DIGALGID_CUSTOM		0x0018
215 
216 #define EVP_MD_FLAG_FIPS	0x0400 /* Note if suitable for use in FIPS mode */
217 
218 /* Digest ctrls */
219 
220 #define	EVP_MD_CTRL_DIGALGID			0x1
221 #define	EVP_MD_CTRL_MICALG			0x2
222 #define	EVP_MD_CTRL_SET_KEY			0x3
223 #define	EVP_MD_CTRL_GOST_SET_SBOX		0x4
224 
225 /* Minimum Algorithm specific ctrl value */
226 
227 #define	EVP_MD_CTRL_ALG_CTRL			0x1000
228 
229 #define EVP_PKEY_NULL_method	NULL,NULL,{0,0,0,0}
230 
231 #ifndef OPENSSL_NO_DSA
232 #define EVP_PKEY_DSA_method	(evp_sign_method *)DSA_sign, \
233 				(evp_verify_method *)DSA_verify, \
234 				{EVP_PKEY_DSA,EVP_PKEY_DSA2,EVP_PKEY_DSA3, \
235 					EVP_PKEY_DSA4,0}
236 #else
237 #define EVP_PKEY_DSA_method	EVP_PKEY_NULL_method
238 #endif
239 
240 #ifndef OPENSSL_NO_ECDSA
241 #define EVP_PKEY_ECDSA_method   (evp_sign_method *)ECDSA_sign, \
242 				(evp_verify_method *)ECDSA_verify, \
243                                  {EVP_PKEY_EC,0,0,0}
244 #else
245 #define EVP_PKEY_ECDSA_method   EVP_PKEY_NULL_method
246 #endif
247 
248 #ifndef OPENSSL_NO_RSA
249 #define EVP_PKEY_RSA_method	(evp_sign_method *)RSA_sign, \
250 				(evp_verify_method *)RSA_verify, \
251 				{EVP_PKEY_RSA,EVP_PKEY_RSA2,0,0}
252 #define EVP_PKEY_RSA_ASN1_OCTET_STRING_method \
253 				(evp_sign_method *)RSA_sign_ASN1_OCTET_STRING, \
254 				(evp_verify_method *)RSA_verify_ASN1_OCTET_STRING, \
255 				{EVP_PKEY_RSA,EVP_PKEY_RSA2,0,0}
256 #else
257 #define EVP_PKEY_RSA_method	EVP_PKEY_NULL_method
258 #define EVP_PKEY_RSA_ASN1_OCTET_STRING_method EVP_PKEY_NULL_method
259 #endif
260 
261 #endif /* !EVP_MD */
262 
263 /* Move to evp_locl.h. */
264 struct env_md_ctx_st {
265 	const EVP_MD *digest;
266 	ENGINE *engine; /* functional reference if 'digest' is ENGINE-provided */
267 	unsigned long flags;
268 	void *md_data;
269 	/* Public key context for sign/verify */
270 	EVP_PKEY_CTX *pctx;
271 	/* Update function: usually copied from EVP_MD */
272 	int (*update)(EVP_MD_CTX *ctx, const void *data, size_t count);
273 } /* EVP_MD_CTX */;
274 
275 /* values for EVP_MD_CTX flags */
276 
277 #define EVP_MD_CTX_FLAG_ONESHOT		0x0001 /* digest update will be called
278 						* once only */
279 #define EVP_MD_CTX_FLAG_CLEANED		0x0002 /* context has already been
280 						* cleaned */
281 #define EVP_MD_CTX_FLAG_REUSE		0x0004 /* Don't free up ctx->md_data
282 						* in EVP_MD_CTX_cleanup */
283 /* FIPS and pad options are ignored in 1.0.0, definitions are here
284  * so we don't accidentally reuse the values for other purposes.
285  */
286 
287 #define EVP_MD_CTX_FLAG_NON_FIPS_ALLOW	0x0008	/* Allow use of non FIPS digest
288 						 * in FIPS mode */
289 
290 /* The following PAD options are also currently ignored in 1.0.0, digest
291  * parameters are handled through EVP_DigestSign*() and EVP_DigestVerify*()
292  * instead.
293  */
294 #define EVP_MD_CTX_FLAG_PAD_MASK	0xF0	/* RSA mode to use */
295 #define EVP_MD_CTX_FLAG_PAD_PKCS1	0x00	/* PKCS#1 v1.5 mode */
296 #define EVP_MD_CTX_FLAG_PAD_X931	0x10	/* X9.31 mode */
297 #define EVP_MD_CTX_FLAG_PAD_PSS		0x20	/* PSS mode */
298 
299 #define EVP_MD_CTX_FLAG_NO_INIT		0x0100 /* Don't initialize md_data */
300 
301 /* Move to evp_locl.h */
302 struct evp_cipher_st {
303 	int nid;
304 	int block_size;
305 	int key_len;		/* Default value for variable length ciphers */
306 	int iv_len;
307 	unsigned long flags;	/* Various flags */
308 	int (*init)(EVP_CIPHER_CTX *ctx, const unsigned char *key,
309 	    const unsigned char *iv, int enc);	/* init key */
310 	int (*do_cipher)(EVP_CIPHER_CTX *ctx, unsigned char *out,
311 	    const unsigned char *in, size_t inl);/* encrypt/decrypt data */
312 	int (*cleanup)(EVP_CIPHER_CTX *); /* cleanup ctx */
313 	int ctx_size;		/* how big ctx->cipher_data needs to be */
314 	int (*set_asn1_parameters)(EVP_CIPHER_CTX *, ASN1_TYPE *); /* Populate a ASN1_TYPE with parameters */
315 	int (*get_asn1_parameters)(EVP_CIPHER_CTX *, ASN1_TYPE *); /* Get parameters from a ASN1_TYPE */
316 	int (*ctrl)(EVP_CIPHER_CTX *, int type, int arg, void *ptr); /* Miscellaneous operations */
317 	void *app_data;		/* Application data */
318 } /* EVP_CIPHER */;
319 
320 /* Values for cipher flags */
321 
322 /* Modes for ciphers */
323 
324 #define		EVP_CIPH_STREAM_CIPHER		0x0
325 #define		EVP_CIPH_ECB_MODE		0x1
326 #define		EVP_CIPH_CBC_MODE		0x2
327 #define		EVP_CIPH_CFB_MODE		0x3
328 #define		EVP_CIPH_OFB_MODE		0x4
329 #define		EVP_CIPH_CTR_MODE		0x5
330 #define		EVP_CIPH_GCM_MODE		0x6
331 #define		EVP_CIPH_CCM_MODE		0x7
332 #define		EVP_CIPH_XTS_MODE		0x10001
333 #define		EVP_CIPH_WRAP_MODE		0x10002
334 #define		EVP_CIPH_MODE			0xF0007
335 /* Set if variable length cipher */
336 #define		EVP_CIPH_VARIABLE_LENGTH	0x8
337 /* Set if the iv handling should be done by the cipher itself */
338 #define		EVP_CIPH_CUSTOM_IV		0x10
339 /* Set if the cipher's init() function should be called if key is NULL */
340 #define		EVP_CIPH_ALWAYS_CALL_INIT	0x20
341 /* Call ctrl() to init cipher parameters */
342 #define		EVP_CIPH_CTRL_INIT		0x40
343 /* Don't use standard key length function */
344 #define		EVP_CIPH_CUSTOM_KEY_LENGTH	0x80
345 /* Don't use standard block padding */
346 #define		EVP_CIPH_NO_PADDING		0x100
347 /* cipher handles random key generation */
348 #define		EVP_CIPH_RAND_KEY		0x200
349 /* cipher has its own additional copying logic */
350 #define		EVP_CIPH_CUSTOM_COPY		0x400
351 /* Allow use default ASN1 get/set iv */
352 #define		EVP_CIPH_FLAG_DEFAULT_ASN1	0x1000
353 /* Buffer length in bits not bytes: CFB1 mode only */
354 #define		EVP_CIPH_FLAG_LENGTH_BITS	0x2000
355 /* Note if suitable for use in FIPS mode */
356 #define		EVP_CIPH_FLAG_FIPS		0x4000
357 /* Allow non FIPS cipher in FIPS mode */
358 #define		EVP_CIPH_FLAG_NON_FIPS_ALLOW	0x8000
359 /* Cipher handles any and all padding logic as well
360  * as finalisation.
361  */
362 #define		EVP_CIPH_FLAG_CUSTOM_CIPHER	0x100000
363 #define		EVP_CIPH_FLAG_AEAD_CIPHER	0x200000
364 
365 /*
366  * Cipher context flag to indicate that we can handle wrap mode: if allowed in
367  * older applications, it could overflow buffers.
368  */
369 #define		EVP_CIPHER_CTX_FLAG_WRAP_ALLOW	0x1
370 
371 /* ctrl() values */
372 
373 #define		EVP_CTRL_INIT			0x0
374 #define		EVP_CTRL_SET_KEY_LENGTH		0x1
375 #define		EVP_CTRL_GET_RC2_KEY_BITS	0x2
376 #define		EVP_CTRL_SET_RC2_KEY_BITS	0x3
377 #define		EVP_CTRL_GET_RC5_ROUNDS		0x4
378 #define		EVP_CTRL_SET_RC5_ROUNDS		0x5
379 #define		EVP_CTRL_RAND_KEY		0x6
380 #define		EVP_CTRL_PBE_PRF_NID		0x7
381 #define		EVP_CTRL_COPY			0x8
382 #define		EVP_CTRL_AEAD_SET_IVLEN		0x9
383 #define		EVP_CTRL_AEAD_GET_TAG		0x10
384 #define		EVP_CTRL_AEAD_SET_TAG		0x11
385 #define		EVP_CTRL_GCM_SET_IVLEN		EVP_CTRL_AEAD_SET_IVLEN
386 #define		EVP_CTRL_GCM_GET_TAG		EVP_CTRL_AEAD_GET_TAG
387 #define		EVP_CTRL_GCM_SET_TAG		EVP_CTRL_AEAD_SET_TAG
388 #define		EVP_CTRL_GCM_SET_IV_FIXED	0x12
389 #define		EVP_CTRL_GCM_IV_GEN		0x13
390 #define		EVP_CTRL_CCM_SET_IVLEN		EVP_CTRL_AEAD_SET_IVLEN
391 #define		EVP_CTRL_CCM_GET_TAG		EVP_CTRL_AEAD_GET_TAG
392 #define		EVP_CTRL_CCM_SET_TAG		EVP_CTRL_AEAD_SET_TAG
393 #define		EVP_CTRL_CCM_SET_L		0x14
394 #define		EVP_CTRL_CCM_SET_MSGLEN		0x15
395 /* AEAD cipher deduces payload length and returns number of bytes
396  * required to store MAC and eventual padding. Subsequent call to
397  * EVP_Cipher even appends/verifies MAC.
398  */
399 #define		EVP_CTRL_AEAD_TLS1_AAD		0x16
400 /* Used by composite AEAD ciphers, no-op in GCM, CCM... */
401 #define		EVP_CTRL_AEAD_SET_MAC_KEY	0x17
402 /* Set the GCM invocation field, decrypt only */
403 #define		EVP_CTRL_GCM_SET_IV_INV		0x18
404 /* Set the S-BOX NID for GOST ciphers */
405 #define		EVP_CTRL_GOST_SET_SBOX		0x19
406 
407 /* GCM TLS constants */
408 /* Length of fixed part of IV derived from PRF */
409 #define EVP_GCM_TLS_FIXED_IV_LEN			4
410 /* Length of explicit part of IV part of TLS records */
411 #define EVP_GCM_TLS_EXPLICIT_IV_LEN			8
412 /* Length of tag for TLS */
413 #define EVP_GCM_TLS_TAG_LEN				16
414 
415 typedef struct evp_cipher_info_st {
416 	const EVP_CIPHER *cipher;
417 	unsigned char iv[EVP_MAX_IV_LENGTH];
418 } EVP_CIPHER_INFO;
419 
420 /* Move to evp_locl.h */
421 struct evp_cipher_ctx_st {
422 	const EVP_CIPHER *cipher;
423 	ENGINE *engine;	/* functional reference if 'cipher' is ENGINE-provided */
424 	int encrypt;		/* encrypt or decrypt */
425 	int buf_len;		/* number we have left */
426 
427 	unsigned char  oiv[EVP_MAX_IV_LENGTH];	/* original iv */
428 	unsigned char  iv[EVP_MAX_IV_LENGTH];	/* working iv */
429 	unsigned char buf[EVP_MAX_BLOCK_LENGTH];/* saved partial block */
430 	int num;				/* used by cfb/ofb/ctr mode */
431 
432 	void *app_data;		/* application stuff */
433 	int key_len;		/* May change for variable length cipher */
434 	unsigned long flags;	/* Various flags */
435 	void *cipher_data; /* per EVP data */
436 	int final_used;
437 	int block_mask;
438 	unsigned char final[EVP_MAX_BLOCK_LENGTH];/* possible final block */
439 } /* EVP_CIPHER_CTX */;
440 
441 /* Move to evp_locl.h */
442 struct evp_Encode_Ctx_st {
443 
444 	int num;	/* number saved in a partial encode/decode */
445 	int length;	/* The length is either the output line length
446 			 * (in input bytes) or the shortest input line
447 			 * length that is ok.  Once decoding begins,
448 			 * the length is adjusted up each time a longer
449 			 * line is decoded */
450 	unsigned char enc_data[80];	/* data to encode */
451 	int line_num;	/* number read on current line */
452 	int expect_nl;
453 } /* EVP_ENCODE_CTX */;
454 
455 /* Password based encryption function */
456 typedef int (EVP_PBE_KEYGEN)(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
457     ASN1_TYPE *param, const EVP_CIPHER *cipher, const EVP_MD *md, int en_de);
458 
459 #ifndef OPENSSL_NO_RSA
460 #define EVP_PKEY_assign_RSA(pkey,rsa) EVP_PKEY_assign((pkey),EVP_PKEY_RSA,\
461 					(char *)(rsa))
462 #endif
463 
464 #ifndef OPENSSL_NO_DSA
465 #define EVP_PKEY_assign_DSA(pkey,dsa) EVP_PKEY_assign((pkey),EVP_PKEY_DSA,\
466 					(char *)(dsa))
467 #endif
468 
469 #ifndef OPENSSL_NO_DH
470 #define EVP_PKEY_assign_DH(pkey,dh) EVP_PKEY_assign((pkey),EVP_PKEY_DH,\
471 					(char *)(dh))
472 #endif
473 
474 #ifndef OPENSSL_NO_EC
475 #define EVP_PKEY_assign_EC_KEY(pkey,eckey) EVP_PKEY_assign((pkey),EVP_PKEY_EC,\
476                                         (char *)(eckey))
477 #endif
478 
479 #ifndef OPENSSL_NO_GOST
480 #define EVP_PKEY_assign_GOST(pkey,gostkey) EVP_PKEY_assign((pkey),EVP_PKEY_GOSTR01,\
481                                         (char *)(gostkey))
482 #endif
483 
484 /* Add some extra combinations */
485 #define EVP_get_digestbynid(a) EVP_get_digestbyname(OBJ_nid2sn(a))
486 #define EVP_get_digestbyobj(a) EVP_get_digestbynid(OBJ_obj2nid(a))
487 #define EVP_get_cipherbynid(a) EVP_get_cipherbyname(OBJ_nid2sn(a))
488 #define EVP_get_cipherbyobj(a) EVP_get_cipherbynid(OBJ_obj2nid(a))
489 
490 int EVP_MD_type(const EVP_MD *md);
491 #define EVP_MD_nid(e)			EVP_MD_type(e)
492 #define EVP_MD_name(e)			OBJ_nid2sn(EVP_MD_nid(e))
493 int EVP_MD_pkey_type(const EVP_MD *md);
494 int EVP_MD_size(const EVP_MD *md);
495 int EVP_MD_block_size(const EVP_MD *md);
496 unsigned long EVP_MD_flags(const EVP_MD *md);
497 
498 const EVP_MD *EVP_MD_CTX_md(const EVP_MD_CTX *ctx);
499 void *EVP_MD_CTX_md_data(const EVP_MD_CTX *ctx);
500 #define EVP_MD_CTX_size(e)		EVP_MD_size(EVP_MD_CTX_md(e))
501 #define EVP_MD_CTX_block_size(e)	EVP_MD_block_size(EVP_MD_CTX_md(e))
502 #define EVP_MD_CTX_type(e)		EVP_MD_type(EVP_MD_CTX_md(e))
503 
504 int EVP_CIPHER_nid(const EVP_CIPHER *cipher);
505 #define EVP_CIPHER_name(e)		OBJ_nid2sn(EVP_CIPHER_nid(e))
506 int EVP_CIPHER_block_size(const EVP_CIPHER *cipher);
507 int EVP_CIPHER_key_length(const EVP_CIPHER *cipher);
508 int EVP_CIPHER_iv_length(const EVP_CIPHER *cipher);
509 unsigned long EVP_CIPHER_flags(const EVP_CIPHER *cipher);
510 #define EVP_CIPHER_mode(e)		(EVP_CIPHER_flags(e) & EVP_CIPH_MODE)
511 
512 const EVP_CIPHER * EVP_CIPHER_CTX_cipher(const EVP_CIPHER_CTX *ctx);
513 int EVP_CIPHER_CTX_encrypting(const EVP_CIPHER_CTX *ctx);
514 int EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX *ctx);
515 int EVP_CIPHER_CTX_block_size(const EVP_CIPHER_CTX *ctx);
516 int EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx);
517 int EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX *ctx);
518 int EVP_CIPHER_CTX_get_iv(const EVP_CIPHER_CTX *ctx,
519     unsigned char *iv, size_t len);
520 int EVP_CIPHER_CTX_set_iv(EVP_CIPHER_CTX *ctx,
521     const unsigned char *iv, size_t len);
522 int EVP_CIPHER_CTX_copy(EVP_CIPHER_CTX *out, const EVP_CIPHER_CTX *in);
523 void * EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX *ctx);
524 void EVP_CIPHER_CTX_set_app_data(EVP_CIPHER_CTX *ctx, void *data);
525 #define EVP_CIPHER_CTX_type(c)         EVP_CIPHER_type(EVP_CIPHER_CTX_cipher(c))
526 unsigned long EVP_CIPHER_CTX_flags(const EVP_CIPHER_CTX *ctx);
527 #define EVP_CIPHER_CTX_mode(e)		(EVP_CIPHER_CTX_flags(e) & EVP_CIPH_MODE)
528 
529 #define EVP_ENCODE_LENGTH(l)	(((l+2)/3*4)+(l/48+1)*2+80)
530 #define EVP_DECODE_LENGTH(l)	((l+3)/4*3+80)
531 
532 #define EVP_SignInit_ex(a,b,c)		EVP_DigestInit_ex(a,b,c)
533 #define EVP_SignInit(a,b)		EVP_DigestInit(a,b)
534 #define EVP_SignUpdate(a,b,c)		EVP_DigestUpdate(a,b,c)
535 #define	EVP_VerifyInit_ex(a,b,c)	EVP_DigestInit_ex(a,b,c)
536 #define	EVP_VerifyInit(a,b)		EVP_DigestInit(a,b)
537 #define	EVP_VerifyUpdate(a,b,c)		EVP_DigestUpdate(a,b,c)
538 #define EVP_OpenUpdate(a,b,c,d,e)	EVP_DecryptUpdate(a,b,c,d,e)
539 #define EVP_SealUpdate(a,b,c,d,e)	EVP_EncryptUpdate(a,b,c,d,e)
540 #define EVP_DigestSignUpdate(a,b,c)	EVP_DigestUpdate(a,b,c)
541 #define EVP_DigestVerifyUpdate(a,b,c)	EVP_DigestUpdate(a,b,c)
542 
543 #define BIO_set_md(b,md)		BIO_ctrl(b,BIO_C_SET_MD,0,(char *)md)
544 #define BIO_get_md(b,mdp)		BIO_ctrl(b,BIO_C_GET_MD,0,(char *)mdp)
545 #define BIO_get_md_ctx(b,mdcp)     BIO_ctrl(b,BIO_C_GET_MD_CTX,0,(char *)mdcp)
546 #define BIO_set_md_ctx(b,mdcp)     BIO_ctrl(b,BIO_C_SET_MD_CTX,0,(char *)mdcp)
547 #define BIO_get_cipher_status(b)	BIO_ctrl(b,BIO_C_GET_CIPHER_STATUS,0,NULL)
548 #define BIO_get_cipher_ctx(b,c_pp)	BIO_ctrl(b,BIO_C_GET_CIPHER_CTX,0,(char *)c_pp)
549 
550 int EVP_Cipher(EVP_CIPHER_CTX *c, unsigned char *out, const unsigned char *in,
551     unsigned int inl);
552 
553 #define EVP_add_cipher_alias(n,alias) \
554 	OBJ_NAME_add((alias),OBJ_NAME_TYPE_CIPHER_METH|OBJ_NAME_ALIAS,(n))
555 #define EVP_add_digest_alias(n,alias) \
556 	OBJ_NAME_add((alias),OBJ_NAME_TYPE_MD_METH|OBJ_NAME_ALIAS,(n))
557 #define EVP_delete_cipher_alias(alias) \
558 	OBJ_NAME_remove(alias,OBJ_NAME_TYPE_CIPHER_METH|OBJ_NAME_ALIAS);
559 #define EVP_delete_digest_alias(alias) \
560 	OBJ_NAME_remove(alias,OBJ_NAME_TYPE_MD_METH|OBJ_NAME_ALIAS);
561 
562 EVP_MD_CTX *EVP_MD_CTX_new(void);
563 void EVP_MD_CTX_free(EVP_MD_CTX *ctx);
564 void EVP_MD_CTX_init(EVP_MD_CTX *ctx);
565 int EVP_MD_CTX_reset(EVP_MD_CTX *ctx);
566 EVP_MD_CTX *EVP_MD_CTX_create(void);
567 void EVP_MD_CTX_destroy(EVP_MD_CTX *ctx);
568 int EVP_MD_CTX_cleanup(EVP_MD_CTX *ctx);
569 int EVP_MD_CTX_copy_ex(EVP_MD_CTX *out, const EVP_MD_CTX *in);
570 void EVP_MD_CTX_set_flags(EVP_MD_CTX *ctx, int flags);
571 void EVP_MD_CTX_clear_flags(EVP_MD_CTX *ctx, int flags);
572 int EVP_MD_CTX_ctrl(EVP_MD_CTX *ctx, int type, int arg, void *ptr);
573 int EVP_MD_CTX_test_flags(const EVP_MD_CTX *ctx, int flags);
574 
575 int EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl);
576 int EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *d, size_t cnt);
577 int EVP_DigestFinal_ex(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *s);
578 int EVP_Digest(const void *data, size_t count, unsigned char *md,
579     unsigned int *size, const EVP_MD *type, ENGINE *impl);
580 
581 int EVP_MD_CTX_copy(EVP_MD_CTX *out, const EVP_MD_CTX *in);
582 int EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type);
583 int EVP_DigestFinal(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *s);
584 
585 int EVP_read_pw_string(char *buf, int length, const char *prompt, int verify);
586 int EVP_read_pw_string_min(char *buf, int minlen, int maxlen,
587     const char *prompt, int verify);
588 void EVP_set_pw_prompt(const char *prompt);
589 char *EVP_get_pw_prompt(void);
590 
591 int EVP_BytesToKey(const EVP_CIPHER *type, const EVP_MD *md,
592     const unsigned char *salt, const unsigned char *data, int datal, int count,
593     unsigned char *key, unsigned char *iv);
594 
595 void EVP_CIPHER_CTX_set_flags(EVP_CIPHER_CTX *ctx, int flags);
596 void EVP_CIPHER_CTX_clear_flags(EVP_CIPHER_CTX *ctx, int flags);
597 int EVP_CIPHER_CTX_test_flags(const EVP_CIPHER_CTX *ctx, int flags);
598 
599 int EVP_EncryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
600     const unsigned char *key, const unsigned char *iv);
601 int EVP_EncryptInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
602     ENGINE *impl, const unsigned char *key, const unsigned char *iv);
603 int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
604     const unsigned char *in, int inl);
605 int EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl);
606 #ifndef LIBRESSL_INTERNAL
607 int EVP_EncryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl);
608 #endif
609 
610 int EVP_DecryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
611     const unsigned char *key, const unsigned char *iv);
612 int EVP_DecryptInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
613     ENGINE *impl, const unsigned char *key, const unsigned char *iv);
614 int EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
615     const unsigned char *in, int inl);
616 int EVP_DecryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *outm, int *outl);
617 #ifndef LIBRESSL_INTERNAL
618 int EVP_DecryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *outm, int *outl);
619 #endif
620 
621 int EVP_CipherInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
622     const unsigned char *key, const unsigned char *iv, int enc);
623 int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
624     ENGINE *impl, const unsigned char *key, const unsigned char *iv, int enc);
625 int EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
626     const unsigned char *in, int inl);
627 int EVP_CipherFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *outm, int *outl);
628 #ifndef LIBRESSL_INTERNAL
629 int EVP_CipherFinal(EVP_CIPHER_CTX *ctx, unsigned char *outm, int *outl);
630 #endif
631 
632 int EVP_SignFinal(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *s,
633     EVP_PKEY *pkey);
634 
635 int EVP_VerifyFinal(EVP_MD_CTX *ctx, const unsigned char *sigbuf,
636     unsigned int siglen, EVP_PKEY *pkey);
637 
638 int EVP_DigestSignInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
639     const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey);
640 int EVP_DigestSignFinal(EVP_MD_CTX *ctx, unsigned char *sigret, size_t *siglen);
641 
642 int EVP_DigestSign(EVP_MD_CTX *ctx, unsigned char *sigret, size_t *siglen,
643     const unsigned char *tbs, size_t tbslen);
644 
645 int EVP_DigestVerifyInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
646     const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey);
647 int EVP_DigestVerifyFinal(EVP_MD_CTX *ctx, const unsigned char *sig,
648     size_t siglen);
649 
650 int EVP_DigestVerify(EVP_MD_CTX *ctx, const unsigned char *sigret,
651     size_t siglen, const unsigned char *tbs, size_t tbslen);
652 
653 int EVP_OpenInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *type,
654     const unsigned char *ek, int ekl, const unsigned char *iv, EVP_PKEY *priv);
655 int EVP_OpenFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl);
656 
657 int EVP_SealInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *type,
658     unsigned char **ek, int *ekl, unsigned char *iv, EVP_PKEY **pubk,
659     int npubk);
660 int EVP_SealFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl);
661 
662 EVP_ENCODE_CTX *EVP_ENCODE_CTX_new(void);
663 void EVP_ENCODE_CTX_free(EVP_ENCODE_CTX *ctx);
664 void EVP_EncodeInit(EVP_ENCODE_CTX *ctx);
665 int EVP_EncodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,
666     const unsigned char *in, int inl);
667 void EVP_EncodeFinal(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl);
668 int EVP_EncodeBlock(unsigned char *t, const unsigned char *f, int n);
669 
670 void EVP_DecodeInit(EVP_ENCODE_CTX *ctx);
671 int EVP_DecodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,
672     const unsigned char *in, int inl);
673 int EVP_DecodeFinal(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl);
674 int EVP_DecodeBlock(unsigned char *t, const unsigned char *f, int n);
675 
676 void EVP_CIPHER_CTX_init(EVP_CIPHER_CTX *a);
677 int EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *a);
678 EVP_CIPHER_CTX *EVP_CIPHER_CTX_new(void);
679 void EVP_CIPHER_CTX_free(EVP_CIPHER_CTX *a);
680 int EVP_CIPHER_CTX_reset(EVP_CIPHER_CTX *a);
681 int EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *x, int keylen);
682 int EVP_CIPHER_CTX_set_padding(EVP_CIPHER_CTX *c, int pad);
683 int EVP_CIPHER_CTX_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr);
684 int EVP_CIPHER_CTX_rand_key(EVP_CIPHER_CTX *ctx, unsigned char *key);
685 
686 #ifndef OPENSSL_NO_BIO
687 const BIO_METHOD *BIO_f_md(void);
688 const BIO_METHOD *BIO_f_base64(void);
689 const BIO_METHOD *BIO_f_cipher(void);
690 int BIO_set_cipher(BIO *b, const EVP_CIPHER *c, const unsigned char *k,
691     const unsigned char *i, int enc);
692 #endif
693 
694 const EVP_MD *EVP_md_null(void);
695 #ifndef OPENSSL_NO_MD4
696 const EVP_MD *EVP_md4(void);
697 #endif
698 #ifndef OPENSSL_NO_MD5
699 const EVP_MD *EVP_md5(void);
700 const EVP_MD *EVP_md5_sha1(void);
701 #endif
702 #ifndef OPENSSL_NO_SHA
703 const EVP_MD *EVP_sha1(void);
704 const EVP_MD *EVP_dss(void);
705 const EVP_MD *EVP_dss1(void);
706 const EVP_MD *EVP_ecdsa(void);
707 #endif
708 #ifndef OPENSSL_NO_SHA256
709 const EVP_MD *EVP_sha224(void);
710 const EVP_MD *EVP_sha256(void);
711 #endif
712 #ifndef OPENSSL_NO_SHA512
713 const EVP_MD *EVP_sha384(void);
714 const EVP_MD *EVP_sha512(void);
715 #endif
716 #ifndef OPENSSL_NO_SM3
717 const EVP_MD *EVP_sm3(void);
718 #endif
719 #ifndef OPENSSL_NO_RIPEMD
720 const EVP_MD *EVP_ripemd160(void);
721 #endif
722 #ifndef OPENSSL_NO_WHIRLPOOL
723 const EVP_MD *EVP_whirlpool(void);
724 #endif
725 #ifndef OPENSSL_NO_GOST
726 const EVP_MD *EVP_gostr341194(void);
727 const EVP_MD *EVP_gost2814789imit(void);
728 const EVP_MD *EVP_streebog256(void);
729 const EVP_MD *EVP_streebog512(void);
730 #endif
731 const EVP_CIPHER *EVP_enc_null(void);		/* does nothing :-) */
732 #ifndef OPENSSL_NO_DES
733 const EVP_CIPHER *EVP_des_ecb(void);
734 const EVP_CIPHER *EVP_des_ede(void);
735 const EVP_CIPHER *EVP_des_ede3(void);
736 const EVP_CIPHER *EVP_des_ede_ecb(void);
737 const EVP_CIPHER *EVP_des_ede3_ecb(void);
738 const EVP_CIPHER *EVP_des_cfb64(void);
739 # define EVP_des_cfb EVP_des_cfb64
740 const EVP_CIPHER *EVP_des_cfb1(void);
741 const EVP_CIPHER *EVP_des_cfb8(void);
742 const EVP_CIPHER *EVP_des_ede_cfb64(void);
743 # define EVP_des_ede_cfb EVP_des_ede_cfb64
744 const EVP_CIPHER *EVP_des_ede3_cfb64(void);
745 # define EVP_des_ede3_cfb EVP_des_ede3_cfb64
746 const EVP_CIPHER *EVP_des_ede3_cfb1(void);
747 const EVP_CIPHER *EVP_des_ede3_cfb8(void);
748 const EVP_CIPHER *EVP_des_ofb(void);
749 const EVP_CIPHER *EVP_des_ede_ofb(void);
750 const EVP_CIPHER *EVP_des_ede3_ofb(void);
751 const EVP_CIPHER *EVP_des_cbc(void);
752 const EVP_CIPHER *EVP_des_ede_cbc(void);
753 const EVP_CIPHER *EVP_des_ede3_cbc(void);
754 const EVP_CIPHER *EVP_desx_cbc(void);
755 #endif
756 #ifndef OPENSSL_NO_RC4
757 const EVP_CIPHER *EVP_rc4(void);
758 const EVP_CIPHER *EVP_rc4_40(void);
759 #ifndef OPENSSL_NO_MD5
760 const EVP_CIPHER *EVP_rc4_hmac_md5(void);
761 #endif
762 #endif
763 #ifndef OPENSSL_NO_IDEA
764 const EVP_CIPHER *EVP_idea_ecb(void);
765 const EVP_CIPHER *EVP_idea_cfb64(void);
766 # define EVP_idea_cfb EVP_idea_cfb64
767 const EVP_CIPHER *EVP_idea_ofb(void);
768 const EVP_CIPHER *EVP_idea_cbc(void);
769 #endif
770 #ifndef OPENSSL_NO_RC2
771 const EVP_CIPHER *EVP_rc2_ecb(void);
772 const EVP_CIPHER *EVP_rc2_cbc(void);
773 const EVP_CIPHER *EVP_rc2_40_cbc(void);
774 const EVP_CIPHER *EVP_rc2_64_cbc(void);
775 const EVP_CIPHER *EVP_rc2_cfb64(void);
776 # define EVP_rc2_cfb EVP_rc2_cfb64
777 const EVP_CIPHER *EVP_rc2_ofb(void);
778 #endif
779 #ifndef OPENSSL_NO_BF
780 const EVP_CIPHER *EVP_bf_ecb(void);
781 const EVP_CIPHER *EVP_bf_cbc(void);
782 const EVP_CIPHER *EVP_bf_cfb64(void);
783 # define EVP_bf_cfb EVP_bf_cfb64
784 const EVP_CIPHER *EVP_bf_ofb(void);
785 #endif
786 #ifndef OPENSSL_NO_CAST
787 const EVP_CIPHER *EVP_cast5_ecb(void);
788 const EVP_CIPHER *EVP_cast5_cbc(void);
789 const EVP_CIPHER *EVP_cast5_cfb64(void);
790 # define EVP_cast5_cfb EVP_cast5_cfb64
791 const EVP_CIPHER *EVP_cast5_ofb(void);
792 #endif
793 #ifndef OPENSSL_NO_AES
794 const EVP_CIPHER *EVP_aes_128_ecb(void);
795 const EVP_CIPHER *EVP_aes_128_cbc(void);
796 const EVP_CIPHER *EVP_aes_128_cfb1(void);
797 const EVP_CIPHER *EVP_aes_128_cfb8(void);
798 const EVP_CIPHER *EVP_aes_128_cfb128(void);
799 # define EVP_aes_128_cfb EVP_aes_128_cfb128
800 const EVP_CIPHER *EVP_aes_128_ofb(void);
801 const EVP_CIPHER *EVP_aes_128_ctr(void);
802 const EVP_CIPHER *EVP_aes_128_ccm(void);
803 const EVP_CIPHER *EVP_aes_128_gcm(void);
804 const EVP_CIPHER *EVP_aes_128_wrap(void);
805 const EVP_CIPHER *EVP_aes_128_xts(void);
806 const EVP_CIPHER *EVP_aes_192_ecb(void);
807 const EVP_CIPHER *EVP_aes_192_cbc(void);
808 const EVP_CIPHER *EVP_aes_192_cfb1(void);
809 const EVP_CIPHER *EVP_aes_192_cfb8(void);
810 const EVP_CIPHER *EVP_aes_192_cfb128(void);
811 # define EVP_aes_192_cfb EVP_aes_192_cfb128
812 const EVP_CIPHER *EVP_aes_192_ofb(void);
813 const EVP_CIPHER *EVP_aes_192_ctr(void);
814 const EVP_CIPHER *EVP_aes_192_ccm(void);
815 const EVP_CIPHER *EVP_aes_192_gcm(void);
816 const EVP_CIPHER *EVP_aes_192_wrap(void);
817 const EVP_CIPHER *EVP_aes_256_ecb(void);
818 const EVP_CIPHER *EVP_aes_256_cbc(void);
819 const EVP_CIPHER *EVP_aes_256_cfb1(void);
820 const EVP_CIPHER *EVP_aes_256_cfb8(void);
821 const EVP_CIPHER *EVP_aes_256_cfb128(void);
822 # define EVP_aes_256_cfb EVP_aes_256_cfb128
823 const EVP_CIPHER *EVP_aes_256_ofb(void);
824 const EVP_CIPHER *EVP_aes_256_ctr(void);
825 const EVP_CIPHER *EVP_aes_256_ccm(void);
826 const EVP_CIPHER *EVP_aes_256_gcm(void);
827 const EVP_CIPHER *EVP_aes_256_wrap(void);
828 const EVP_CIPHER *EVP_aes_256_xts(void);
829 #if !defined(OPENSSL_NO_SHA) && !defined(OPENSSL_NO_SHA1)
830 const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha1(void);
831 const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha1(void);
832 #endif
833 #endif
834 #ifndef OPENSSL_NO_CAMELLIA
835 const EVP_CIPHER *EVP_camellia_128_ecb(void);
836 const EVP_CIPHER *EVP_camellia_128_cbc(void);
837 const EVP_CIPHER *EVP_camellia_128_cfb1(void);
838 const EVP_CIPHER *EVP_camellia_128_cfb8(void);
839 const EVP_CIPHER *EVP_camellia_128_cfb128(void);
840 # define EVP_camellia_128_cfb EVP_camellia_128_cfb128
841 const EVP_CIPHER *EVP_camellia_128_ofb(void);
842 const EVP_CIPHER *EVP_camellia_192_ecb(void);
843 const EVP_CIPHER *EVP_camellia_192_cbc(void);
844 const EVP_CIPHER *EVP_camellia_192_cfb1(void);
845 const EVP_CIPHER *EVP_camellia_192_cfb8(void);
846 const EVP_CIPHER *EVP_camellia_192_cfb128(void);
847 # define EVP_camellia_192_cfb EVP_camellia_192_cfb128
848 const EVP_CIPHER *EVP_camellia_192_ofb(void);
849 const EVP_CIPHER *EVP_camellia_256_ecb(void);
850 const EVP_CIPHER *EVP_camellia_256_cbc(void);
851 const EVP_CIPHER *EVP_camellia_256_cfb1(void);
852 const EVP_CIPHER *EVP_camellia_256_cfb8(void);
853 const EVP_CIPHER *EVP_camellia_256_cfb128(void);
854 # define EVP_camellia_256_cfb EVP_camellia_256_cfb128
855 const EVP_CIPHER *EVP_camellia_256_ofb(void);
856 #endif
857 
858 #ifndef OPENSSL_NO_CHACHA
859 const EVP_CIPHER *EVP_chacha20(void);
860 #endif
861 
862 #ifndef OPENSSL_NO_GOST
863 const EVP_CIPHER *EVP_gost2814789_ecb(void);
864 const EVP_CIPHER *EVP_gost2814789_cfb64(void);
865 const EVP_CIPHER *EVP_gost2814789_cnt(void);
866 #endif
867 
868 #ifndef OPENSSL_NO_SM4
869 const EVP_CIPHER *EVP_sm4_ecb(void);
870 const EVP_CIPHER *EVP_sm4_cbc(void);
871 const EVP_CIPHER *EVP_sm4_cfb128(void);
872 #define EVP_sm4_cfb EVP_sm4_cfb128
873 const EVP_CIPHER *EVP_sm4_ofb(void);
874 const EVP_CIPHER *EVP_sm4_ctr(void);
875 #endif
876 
877 void OPENSSL_add_all_algorithms_noconf(void);
878 void OPENSSL_add_all_algorithms_conf(void);
879 
880 #ifdef OPENSSL_LOAD_CONF
881 #define OpenSSL_add_all_algorithms() OPENSSL_add_all_algorithms_conf()
882 #else
883 #define OpenSSL_add_all_algorithms() OPENSSL_add_all_algorithms_noconf()
884 #endif
885 
886 void OpenSSL_add_all_ciphers(void);
887 void OpenSSL_add_all_digests(void);
888 
889 #define SSLeay_add_all_algorithms() OpenSSL_add_all_algorithms()
890 #define SSLeay_add_all_ciphers() OpenSSL_add_all_ciphers()
891 #define SSLeay_add_all_digests() OpenSSL_add_all_digests()
892 
893 int EVP_add_cipher(const EVP_CIPHER *cipher);
894 int EVP_add_digest(const EVP_MD *digest);
895 
896 const EVP_CIPHER *EVP_get_cipherbyname(const char *name);
897 const EVP_MD *EVP_get_digestbyname(const char *name);
898 void EVP_cleanup(void);
899 
900 void EVP_CIPHER_do_all(void (*fn)(const EVP_CIPHER *ciph, const char *from,
901     const char *to, void *x), void *arg);
902 void EVP_CIPHER_do_all_sorted(void (*fn)(const EVP_CIPHER *ciph,
903     const char *from, const char *to, void *x), void *arg);
904 
905 void EVP_MD_do_all(void (*fn)(const EVP_MD *ciph, const char *from,
906     const char *to, void *x), void *arg);
907 void EVP_MD_do_all_sorted(void (*fn)(const EVP_MD *ciph, const char *from,
908     const char *to, void *x), void *arg);
909 
910 int EVP_PKEY_decrypt_old(unsigned char *dec_key, const unsigned char *enc_key,
911     int enc_key_len, EVP_PKEY *private_key);
912 int EVP_PKEY_encrypt_old(unsigned char *enc_key, const unsigned char *key,
913     int key_len, EVP_PKEY *pub_key);
914 int EVP_PKEY_type(int type);
915 int EVP_PKEY_id(const EVP_PKEY *pkey);
916 int EVP_PKEY_base_id(const EVP_PKEY *pkey);
917 int EVP_PKEY_bits(const EVP_PKEY *pkey);
918 int EVP_PKEY_size(const EVP_PKEY *pkey);
919 int EVP_PKEY_set_type(EVP_PKEY *pkey, int type);
920 int EVP_PKEY_set_type_str(EVP_PKEY *pkey, const char *str, int len);
921 int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key);
922 void *EVP_PKEY_get0(const EVP_PKEY *pkey);
923 const unsigned char *EVP_PKEY_get0_hmac(const EVP_PKEY *pkey, size_t *len);
924 
925 #ifndef OPENSSL_NO_RSA
926 struct rsa_st;
927 struct rsa_st *EVP_PKEY_get0_RSA(EVP_PKEY *pkey);
928 struct rsa_st *EVP_PKEY_get1_RSA(EVP_PKEY *pkey);
929 int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, struct rsa_st *key);
930 #endif
931 #ifndef OPENSSL_NO_DSA
932 struct dsa_st;
933 struct dsa_st *EVP_PKEY_get0_DSA(EVP_PKEY *pkey);
934 struct dsa_st *EVP_PKEY_get1_DSA(EVP_PKEY *pkey);
935 int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, struct dsa_st *key);
936 #endif
937 #ifndef OPENSSL_NO_DH
938 struct dh_st;
939 struct dh_st *EVP_PKEY_get0_DH(EVP_PKEY *pkey);
940 struct dh_st *EVP_PKEY_get1_DH(EVP_PKEY *pkey);
941 int EVP_PKEY_set1_DH(EVP_PKEY *pkey, struct dh_st *key);
942 #endif
943 #ifndef OPENSSL_NO_EC
944 struct ec_key_st;
945 struct ec_key_st *EVP_PKEY_get0_EC_KEY(EVP_PKEY *pkey);
946 struct ec_key_st *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey);
947 int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, struct ec_key_st *key);
948 #endif
949 #ifndef OPENSSL_NO_GOST
950 struct gost_key_st;
951 #endif
952 
953 EVP_PKEY *EVP_PKEY_new(void);
954 void EVP_PKEY_free(EVP_PKEY *pkey);
955 int EVP_PKEY_up_ref(EVP_PKEY *pkey);
956 
957 EVP_PKEY *d2i_PublicKey(int type, EVP_PKEY **a, const unsigned char **pp,
958     long length);
959 int i2d_PublicKey(EVP_PKEY *a, unsigned char **pp);
960 
961 EVP_PKEY *d2i_PrivateKey(int type, EVP_PKEY **a, const unsigned char **pp,
962     long length);
963 EVP_PKEY *d2i_AutoPrivateKey(EVP_PKEY **a, const unsigned char **pp,
964     long length);
965 int i2d_PrivateKey(EVP_PKEY *a, unsigned char **pp);
966 
967 int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from);
968 int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey);
969 int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode);
970 int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b);
971 
972 int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b);
973 
974 int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey, int indent,
975     ASN1_PCTX *pctx);
976 int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey, int indent,
977     ASN1_PCTX *pctx);
978 int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey, int indent,
979     ASN1_PCTX *pctx);
980 
981 int EVP_PKEY_get_default_digest_nid(EVP_PKEY *pkey, int *pnid);
982 
983 int EVP_CIPHER_type(const EVP_CIPHER *ctx);
984 
985 /* calls methods */
986 int EVP_CIPHER_param_to_asn1(EVP_CIPHER_CTX *c, ASN1_TYPE *type);
987 int EVP_CIPHER_asn1_to_param(EVP_CIPHER_CTX *c, ASN1_TYPE *type);
988 
989 /* These are used by EVP_CIPHER methods */
990 int EVP_CIPHER_set_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type);
991 int EVP_CIPHER_get_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type);
992 
993 /* PKCS5 password based encryption */
994 int PKCS5_PBE_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
995     ASN1_TYPE *param, const EVP_CIPHER *cipher, const EVP_MD *md, int en_de);
996 int PKCS5_PBKDF2_HMAC_SHA1(const char *pass, int passlen,
997     const unsigned char *salt, int saltlen, int iter, int keylen,
998     unsigned char *out);
999 int PKCS5_PBKDF2_HMAC(const char *pass, int passlen, const unsigned char *salt,
1000     int saltlen, int iter, const EVP_MD *digest, int keylen,
1001     unsigned char *out);
1002 int PKCS5_v2_PBE_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
1003     ASN1_TYPE *param, const EVP_CIPHER *cipher, const EVP_MD *md,
1004     int en_de);
1005 
1006 void PKCS5_PBE_add(void);
1007 
1008 int EVP_PBE_CipherInit (ASN1_OBJECT *pbe_obj, const char *pass, int passlen,
1009     ASN1_TYPE *param, EVP_CIPHER_CTX *ctx, int en_de);
1010 
1011 /* PBE type */
1012 
1013 /* Can appear as the outermost AlgorithmIdentifier */
1014 #define EVP_PBE_TYPE_OUTER	0x0
1015 /* Is an PRF type OID */
1016 #define EVP_PBE_TYPE_PRF	0x1
1017 
1018 int EVP_PBE_alg_add_type(int pbe_type, int pbe_nid, int cipher_nid, int md_nid,
1019     EVP_PBE_KEYGEN *keygen);
1020 int EVP_PBE_alg_add(int nid, const EVP_CIPHER *cipher, const EVP_MD *md,
1021     EVP_PBE_KEYGEN *keygen);
1022 int EVP_PBE_find(int type, int pbe_nid, int *pcnid, int *pmnid,
1023     EVP_PBE_KEYGEN **pkeygen);
1024 void EVP_PBE_cleanup(void);
1025 
1026 #define ASN1_PKEY_ALIAS		0x1
1027 #define ASN1_PKEY_DYNAMIC	0x2
1028 #define ASN1_PKEY_SIGPARAM_NULL	0x4
1029 
1030 #define ASN1_PKEY_CTRL_PKCS7_SIGN	0x1
1031 #define ASN1_PKEY_CTRL_PKCS7_ENCRYPT	0x2
1032 #define ASN1_PKEY_CTRL_DEFAULT_MD_NID	0x3
1033 #define ASN1_PKEY_CTRL_CMS_SIGN		0x5
1034 #define ASN1_PKEY_CTRL_CMS_ENVELOPE	0x7
1035 #define ASN1_PKEY_CTRL_CMS_RI_TYPE	0x8
1036 
1037 int EVP_PKEY_asn1_get_count(void);
1038 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_get0(int idx);
1039 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find(ENGINE **pe, int type);
1040 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find_str(ENGINE **pe,
1041     const char *str, int len);
1042 int EVP_PKEY_asn1_add0(const EVP_PKEY_ASN1_METHOD *ameth);
1043 int EVP_PKEY_asn1_add_alias(int to, int from);
1044 int EVP_PKEY_asn1_get0_info(int *ppkey_id, int *pkey_base_id, int *ppkey_flags,
1045     const char **pinfo, const char **ppem_str,
1046     const EVP_PKEY_ASN1_METHOD *ameth);
1047 
1048 const EVP_PKEY_ASN1_METHOD* EVP_PKEY_get0_asn1(const EVP_PKEY *pkey);
1049 EVP_PKEY_ASN1_METHOD* EVP_PKEY_asn1_new(int id, int flags, const char *pem_str,
1050     const char *info);
1051 void EVP_PKEY_asn1_copy(EVP_PKEY_ASN1_METHOD *dst,
1052     const EVP_PKEY_ASN1_METHOD *src);
1053 void EVP_PKEY_asn1_free(EVP_PKEY_ASN1_METHOD *ameth);
1054 void EVP_PKEY_asn1_set_public(EVP_PKEY_ASN1_METHOD *ameth,
1055     int (*pub_decode)(EVP_PKEY *pk, X509_PUBKEY *pub),
1056     int (*pub_encode)(X509_PUBKEY *pub, const EVP_PKEY *pk),
1057     int (*pub_cmp)(const EVP_PKEY *a, const EVP_PKEY *b),
1058     int (*pub_print)(BIO *out, const EVP_PKEY *pkey, int indent,
1059     ASN1_PCTX *pctx),
1060     int (*pkey_size)(const EVP_PKEY *pk),
1061     int (*pkey_bits)(const EVP_PKEY *pk));
1062 void EVP_PKEY_asn1_set_private(EVP_PKEY_ASN1_METHOD *ameth,
1063     int (*priv_decode)(EVP_PKEY *pk, const PKCS8_PRIV_KEY_INFO *p8inf),
1064     int (*priv_encode)(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pk),
1065     int (*priv_print)(BIO *out, const EVP_PKEY *pkey, int indent,
1066     ASN1_PCTX *pctx));
1067 void EVP_PKEY_asn1_set_param(EVP_PKEY_ASN1_METHOD *ameth,
1068     int (*param_decode)(EVP_PKEY *pkey, const unsigned char **pder, int derlen),
1069     int (*param_encode)(const EVP_PKEY *pkey, unsigned char **pder),
1070     int (*param_missing)(const EVP_PKEY *pk),
1071     int (*param_copy)(EVP_PKEY *to, const EVP_PKEY *from),
1072     int (*param_cmp)(const EVP_PKEY *a, const EVP_PKEY *b),
1073     int (*param_print)(BIO *out, const EVP_PKEY *pkey, int indent,
1074     ASN1_PCTX *pctx));
1075 
1076 void EVP_PKEY_asn1_set_free(EVP_PKEY_ASN1_METHOD *ameth,
1077     void (*pkey_free)(EVP_PKEY *pkey));
1078 void EVP_PKEY_asn1_set_ctrl(EVP_PKEY_ASN1_METHOD *ameth,
1079     int (*pkey_ctrl)(EVP_PKEY *pkey, int op, long arg1, void *arg2));
1080 
1081 #define EVP_PKEY_OP_UNDEFINED		0
1082 #define EVP_PKEY_OP_PARAMGEN		(1<<1)
1083 #define EVP_PKEY_OP_KEYGEN		(1<<2)
1084 #define EVP_PKEY_OP_SIGN		(1<<3)
1085 #define EVP_PKEY_OP_VERIFY		(1<<4)
1086 #define EVP_PKEY_OP_VERIFYRECOVER	(1<<5)
1087 #define EVP_PKEY_OP_SIGNCTX		(1<<6)
1088 #define EVP_PKEY_OP_VERIFYCTX		(1<<7)
1089 #define EVP_PKEY_OP_ENCRYPT		(1<<8)
1090 #define EVP_PKEY_OP_DECRYPT		(1<<9)
1091 #define EVP_PKEY_OP_DERIVE		(1<<10)
1092 
1093 #define EVP_PKEY_OP_TYPE_SIG	\
1094 	(EVP_PKEY_OP_SIGN | EVP_PKEY_OP_VERIFY | EVP_PKEY_OP_VERIFYRECOVER \
1095 		| EVP_PKEY_OP_SIGNCTX | EVP_PKEY_OP_VERIFYCTX)
1096 
1097 #define EVP_PKEY_OP_TYPE_CRYPT \
1098 	(EVP_PKEY_OP_ENCRYPT | EVP_PKEY_OP_DECRYPT)
1099 
1100 #define EVP_PKEY_OP_TYPE_NOGEN \
1101 	(EVP_PKEY_OP_SIG | EVP_PKEY_OP_CRYPT | EVP_PKEY_OP_DERIVE)
1102 
1103 #define EVP_PKEY_OP_TYPE_GEN \
1104 		(EVP_PKEY_OP_PARAMGEN | EVP_PKEY_OP_KEYGEN)
1105 
1106 #define EVP_PKEY_CTX_set_signature_md(ctx, md) \
1107 		EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG, \
1108 		    EVP_PKEY_CTRL_MD, 0, (void *)md)
1109 
1110 #define EVP_PKEY_CTX_get_signature_md(ctx, pmd) \
1111 		EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG, \
1112 		    EVP_PKEY_CTRL_GET_MD, 0, (void *)(pmd))
1113 
1114 #define EVP_PKEY_CTRL_MD		1
1115 #define EVP_PKEY_CTRL_PEER_KEY		2
1116 
1117 #define EVP_PKEY_CTRL_PKCS7_ENCRYPT	3
1118 #define EVP_PKEY_CTRL_PKCS7_DECRYPT	4
1119 
1120 #define EVP_PKEY_CTRL_PKCS7_SIGN	5
1121 
1122 #define EVP_PKEY_CTRL_SET_MAC_KEY	6
1123 
1124 #define EVP_PKEY_CTRL_DIGESTINIT	7
1125 
1126 /* Used by GOST key encryption in TLS */
1127 #define EVP_PKEY_CTRL_SET_IV		8
1128 
1129 #define EVP_PKEY_CTRL_CMS_ENCRYPT	9
1130 #define EVP_PKEY_CTRL_CMS_DECRYPT	10
1131 #define EVP_PKEY_CTRL_CMS_SIGN		11
1132 
1133 #define EVP_PKEY_CTRL_CIPHER		12
1134 
1135 #define EVP_PKEY_CTRL_GET_MD		13
1136 
1137 #define EVP_PKEY_ALG_CTRL		0x1000
1138 
1139 
1140 #define EVP_PKEY_FLAG_AUTOARGLEN	2
1141 /* Method handles all operations: don't assume any digest related
1142  * defaults.
1143  */
1144 #define EVP_PKEY_FLAG_SIGCTX_CUSTOM	4
1145 
1146 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type);
1147 EVP_PKEY_METHOD* EVP_PKEY_meth_new(int id, int flags);
1148 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
1149     const EVP_PKEY_METHOD *meth);
1150 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src);
1151 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth);
1152 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth);
1153 
1154 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e);
1155 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e);
1156 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(EVP_PKEY_CTX *ctx);
1157 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx);
1158 
1159 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype, int cmd,
1160     int p1, void *p2);
1161 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx, const char *type,
1162     const char *value);
1163 
1164 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx);
1165 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen);
1166 
1167 EVP_PKEY *EVP_PKEY_new_mac_key(int type, ENGINE *e, const unsigned char *key,
1168     int keylen);
1169 EVP_PKEY *EVP_PKEY_new_CMAC_key(ENGINE *e, const unsigned char *priv,
1170     size_t len, const EVP_CIPHER *cipher);
1171 
1172 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data);
1173 void *EVP_PKEY_CTX_get_data(EVP_PKEY_CTX *ctx);
1174 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx);
1175 
1176 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx);
1177 
1178 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data);
1179 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx);
1180 
1181 int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx);
1182 int EVP_PKEY_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
1183     const unsigned char *tbs, size_t tbslen);
1184 int EVP_PKEY_verify_init(EVP_PKEY_CTX *ctx);
1185 int EVP_PKEY_verify(EVP_PKEY_CTX *ctx, const unsigned char *sig, size_t siglen,
1186     const unsigned char *tbs, size_t tbslen);
1187 int EVP_PKEY_verify_recover_init(EVP_PKEY_CTX *ctx);
1188 int EVP_PKEY_verify_recover(EVP_PKEY_CTX *ctx, unsigned char *rout,
1189     size_t *routlen, const unsigned char *sig, size_t siglen);
1190 int EVP_PKEY_encrypt_init(EVP_PKEY_CTX *ctx);
1191 int EVP_PKEY_encrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
1192     const unsigned char *in, size_t inlen);
1193 int EVP_PKEY_decrypt_init(EVP_PKEY_CTX *ctx);
1194 int EVP_PKEY_decrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
1195     const unsigned char *in, size_t inlen);
1196 
1197 int EVP_PKEY_derive_init(EVP_PKEY_CTX *ctx);
1198 int EVP_PKEY_derive_set_peer(EVP_PKEY_CTX *ctx, EVP_PKEY *peer);
1199 int EVP_PKEY_derive(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen);
1200 
1201 typedef int EVP_PKEY_gen_cb(EVP_PKEY_CTX *ctx);
1202 
1203 int EVP_PKEY_paramgen_init(EVP_PKEY_CTX *ctx);
1204 int EVP_PKEY_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY **ppkey);
1205 int EVP_PKEY_keygen_init(EVP_PKEY_CTX *ctx);
1206 int EVP_PKEY_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY **ppkey);
1207 
1208 void EVP_PKEY_CTX_set_cb(EVP_PKEY_CTX *ctx, EVP_PKEY_gen_cb *cb);
1209 EVP_PKEY_gen_cb *EVP_PKEY_CTX_get_cb(EVP_PKEY_CTX *ctx);
1210 
1211 int EVP_PKEY_CTX_get_keygen_info(EVP_PKEY_CTX *ctx, int idx);
1212 
1213 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
1214     int (*init)(EVP_PKEY_CTX *ctx));
1215 
1216 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
1217     int (*copy)(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src));
1218 
1219 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
1220     void (*cleanup)(EVP_PKEY_CTX *ctx));
1221 
1222 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
1223     int (*paramgen_init)(EVP_PKEY_CTX *ctx),
1224     int (*paramgen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey));
1225 
1226 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
1227     int (*keygen_init)(EVP_PKEY_CTX *ctx),
1228     int (*keygen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey));
1229 
1230 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
1231     int (*sign_init)(EVP_PKEY_CTX *ctx),
1232     int (*sign)(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
1233     const unsigned char *tbs, size_t tbslen));
1234 
1235 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
1236     int (*verify_init)(EVP_PKEY_CTX *ctx),
1237     int (*verify)(EVP_PKEY_CTX *ctx, const unsigned char *sig, size_t siglen,
1238     const unsigned char *tbs, size_t tbslen));
1239 
1240 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
1241     int (*verify_recover_init)(EVP_PKEY_CTX *ctx),
1242     int (*verify_recover)(EVP_PKEY_CTX *ctx, unsigned char *sig,
1243     size_t *siglen, const unsigned char *tbs, size_t tbslen));
1244 
1245 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
1246     int (*signctx_init)(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx),
1247     int (*signctx)(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
1248     EVP_MD_CTX *mctx));
1249 
1250 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
1251     int (*verifyctx_init)(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx),
1252     int (*verifyctx)(EVP_PKEY_CTX *ctx, const unsigned char *sig, int siglen,
1253     EVP_MD_CTX *mctx));
1254 
1255 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
1256     int (*encrypt_init)(EVP_PKEY_CTX *ctx),
1257     int (*encryptfn)(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
1258     const unsigned char *in, size_t inlen));
1259 
1260 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
1261     int (*decrypt_init)(EVP_PKEY_CTX *ctx),
1262     int (*decrypt)(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
1263     const unsigned char *in, size_t inlen));
1264 
1265 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
1266     int (*derive_init)(EVP_PKEY_CTX *ctx),
1267     int (*derive)(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen));
1268 
1269 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
1270     int (*ctrl)(EVP_PKEY_CTX *ctx, int type, int p1, void *p2),
1271     int (*ctrl_str)(EVP_PKEY_CTX *ctx, const char *type, const char *value));
1272 
1273 /* Authenticated Encryption with Additional Data.
1274  *
1275  * AEAD couples confidentiality and integrity in a single primtive. AEAD
1276  * algorithms take a key and then can seal and open individual messages. Each
1277  * message has a unique, per-message nonce and, optionally, additional data
1278  * which is authenticated but not included in the output. */
1279 
1280 struct evp_aead_st;
1281 typedef struct evp_aead_st EVP_AEAD;
1282 
1283 #ifndef OPENSSL_NO_AES
1284 /* EVP_aes_128_gcm is AES-128 in Galois Counter Mode. */
1285 const EVP_AEAD *EVP_aead_aes_128_gcm(void);
1286 /* EVP_aes_256_gcm is AES-256 in Galois Counter Mode. */
1287 const EVP_AEAD *EVP_aead_aes_256_gcm(void);
1288 #endif
1289 
1290 #if !defined(OPENSSL_NO_CHACHA) && !defined(OPENSSL_NO_POLY1305)
1291 /* EVP_aead_chacha20_poly1305 is ChaCha20 with a Poly1305 authenticator. */
1292 const EVP_AEAD *EVP_aead_chacha20_poly1305(void);
1293 /* EVP_aead_xchacha20_poly1305 is XChaCha20 with a Poly1305 authenticator. */
1294 const EVP_AEAD *EVP_aead_xchacha20_poly1305(void);
1295 #endif
1296 
1297 /* EVP_AEAD_key_length returns the length of the keys used. */
1298 size_t EVP_AEAD_key_length(const EVP_AEAD *aead);
1299 
1300 /* EVP_AEAD_nonce_length returns the length of the per-message nonce. */
1301 size_t EVP_AEAD_nonce_length(const EVP_AEAD *aead);
1302 
1303 /* EVP_AEAD_max_overhead returns the maximum number of additional bytes added
1304  * by the act of sealing data with the AEAD. */
1305 size_t EVP_AEAD_max_overhead(const EVP_AEAD *aead);
1306 
1307 /* EVP_AEAD_max_tag_len returns the maximum tag length when using this AEAD.
1308  * This * is the largest value that can be passed as a tag length to
1309  * EVP_AEAD_CTX_init. */
1310 size_t EVP_AEAD_max_tag_len(const EVP_AEAD *aead);
1311 
1312 /* An EVP_AEAD_CTX represents an AEAD algorithm configured with a specific key
1313  * and message-independent IV. */
1314 typedef struct evp_aead_ctx_st {
1315 	const EVP_AEAD *aead;
1316 	/* aead_state is an opaque pointer to the AEAD specific state. */
1317 	void *aead_state;
1318 } EVP_AEAD_CTX;
1319 
1320 /* EVP_AEAD_MAX_TAG_LENGTH is the maximum tag length used by any AEAD
1321  * defined in this header. */
1322 #define EVP_AEAD_MAX_TAG_LENGTH 16
1323 
1324 /* EVP_AEAD_DEFAULT_TAG_LENGTH is a magic value that can be passed to
1325  * EVP_AEAD_CTX_init to indicate that the default tag length for an AEAD
1326  * should be used. */
1327 #define EVP_AEAD_DEFAULT_TAG_LENGTH 0
1328 
1329 /* EVP_AEAD_init initializes the context for the given AEAD algorithm.
1330  * The implementation argument may be NULL to choose the default implementation.
1331  * Authentication tags may be truncated by passing a tag length. A tag length
1332  * of zero indicates the default tag length should be used. */
1333 int EVP_AEAD_CTX_init(EVP_AEAD_CTX *ctx, const EVP_AEAD *aead,
1334     const unsigned char *key, size_t key_len, size_t tag_len, ENGINE *impl);
1335 
1336 /* EVP_AEAD_CTX_cleanup frees any data allocated for this context. */
1337 void EVP_AEAD_CTX_cleanup(EVP_AEAD_CTX *ctx);
1338 
1339 /* EVP_AEAD_CTX_seal encrypts and authenticates the input and authenticates
1340  * any additional data (AD), the result being written as output. One is
1341  * returned on success, otherwise zero.
1342  *
1343  * This function may be called (with the same EVP_AEAD_CTX) concurrently with
1344  * itself or EVP_AEAD_CTX_open.
1345  *
1346  * At most max_out_len bytes are written as output and, in order to ensure
1347  * success, this value should be the length of the input plus the result of
1348  * EVP_AEAD_overhead. On successful return, out_len is set to the actual
1349  * number of bytes written.
1350  *
1351  * The length of the nonce is must be equal to the result of
1352  * EVP_AEAD_nonce_length for this AEAD.
1353  *
1354  * EVP_AEAD_CTX_seal never results in a partial output. If max_out_len is
1355  * insufficient, zero will be returned and out_len will be set to zero.
1356  *
1357  * If the input and output are aliased then out must be <= in. */
1358 int EVP_AEAD_CTX_seal(const EVP_AEAD_CTX *ctx, unsigned char *out,
1359     size_t *out_len, size_t max_out_len, const unsigned char *nonce,
1360     size_t nonce_len, const unsigned char *in, size_t in_len,
1361     const unsigned char *ad, size_t ad_len);
1362 
1363 /* EVP_AEAD_CTX_open authenticates the input and additional data, decrypting
1364  * the input and writing it as output. One is returned on success, otherwise
1365  * zero.
1366  *
1367  * This function may be called (with the same EVP_AEAD_CTX) concurrently with
1368  * itself or EVP_AEAD_CTX_seal.
1369  *
1370  * At most the number of input bytes are written as output. In order to ensure
1371  * success, max_out_len should be at least the same as the input length. On
1372  * successful return out_len is set to the actual number of bytes written.
1373  *
1374  * The length of nonce must be equal to the result of EVP_AEAD_nonce_length
1375  * for this AEAD.
1376  *
1377  * EVP_AEAD_CTX_open never results in a partial output. If max_out_len is
1378  * insufficient, zero will be returned and out_len will be set to zero.
1379  *
1380  * If the input and output are aliased then out must be <= in. */
1381 int EVP_AEAD_CTX_open(const EVP_AEAD_CTX *ctx, unsigned char *out,
1382     size_t *out_len, size_t max_out_len, const unsigned char *nonce,
1383     size_t nonce_len, const unsigned char *in, size_t in_len,
1384     const unsigned char *ad, size_t ad_len);
1385 
1386 void EVP_add_alg_module(void);
1387 
1388 /* BEGIN ERROR CODES */
1389 /* The following lines are auto generated by the script mkerr.pl. Any changes
1390  * made after this point may be overwritten when the script is next run.
1391  */
1392 void ERR_load_EVP_strings(void);
1393 
1394 /* Error codes for the EVP functions. */
1395 
1396 /* Function codes. */
1397 #define EVP_F_AEAD_AES_GCM_INIT				 187
1398 #define EVP_F_AEAD_AES_GCM_OPEN				 188
1399 #define EVP_F_AEAD_AES_GCM_SEAL				 189
1400 #define EVP_F_AEAD_CHACHA20_POLY1305_INIT		 192
1401 #define EVP_F_AEAD_CHACHA20_POLY1305_OPEN		 193
1402 #define EVP_F_AEAD_CHACHA20_POLY1305_SEAL		 194
1403 #define EVP_F_AEAD_CTX_OPEN				 185
1404 #define EVP_F_AEAD_CTX_SEAL				 186
1405 #define EVP_F_AESNI_INIT_KEY				 165
1406 #define EVP_F_AESNI_XTS_CIPHER				 176
1407 #define EVP_F_AES_INIT_KEY				 133
1408 #define EVP_F_AES_XTS					 172
1409 #define EVP_F_AES_XTS_CIPHER				 175
1410 #define EVP_F_ALG_MODULE_INIT				 177
1411 #define EVP_F_CAMELLIA_INIT_KEY				 159
1412 #define EVP_F_CMAC_INIT					 173
1413 #define EVP_F_D2I_PKEY					 100
1414 #define EVP_F_DO_SIGVER_INIT				 161
1415 #define EVP_F_DSAPKEY2PKCS8				 134
1416 #define EVP_F_DSA_PKEY2PKCS8				 135
1417 #define EVP_F_ECDSA_PKEY2PKCS8				 129
1418 #define EVP_F_ECKEY_PKEY2PKCS8				 132
1419 #define EVP_F_EVP_AEAD_CTX_INIT				 180
1420 #define EVP_F_EVP_AEAD_CTX_OPEN				 190
1421 #define EVP_F_EVP_AEAD_CTX_SEAL				 191
1422 #define EVP_F_EVP_BYTESTOKEY				 200
1423 #define EVP_F_EVP_CIPHERINIT_EX				 123
1424 #define EVP_F_EVP_CIPHER_CTX_COPY			 163
1425 #define EVP_F_EVP_CIPHER_CTX_CTRL			 124
1426 #define EVP_F_EVP_CIPHER_CTX_SET_KEY_LENGTH		 122
1427 #define EVP_F_EVP_CIPHER_GET_ASN1_IV			 201
1428 #define EVP_F_EVP_CIPHER_SET_ASN1_IV			 202
1429 #define EVP_F_EVP_DECRYPTFINAL_EX			 101
1430 #define EVP_F_EVP_DECRYPTUPDATE				 199
1431 #define EVP_F_EVP_DIGESTFINAL_EX			 196
1432 #define EVP_F_EVP_DIGESTINIT_EX				 128
1433 #define EVP_F_EVP_ENCRYPTFINAL_EX			 127
1434 #define EVP_F_EVP_ENCRYPTUPDATE				 198
1435 #define EVP_F_EVP_MD_CTX_COPY_EX			 110
1436 #define EVP_F_EVP_MD_CTX_CTRL				 195
1437 #define EVP_F_EVP_MD_SIZE				 162
1438 #define EVP_F_EVP_OPENINIT				 102
1439 #define EVP_F_EVP_PBE_ALG_ADD				 115
1440 #define EVP_F_EVP_PBE_ALG_ADD_TYPE			 160
1441 #define EVP_F_EVP_PBE_CIPHERINIT			 116
1442 #define EVP_F_EVP_PKCS82PKEY				 111
1443 #define EVP_F_EVP_PKCS82PKEY_BROKEN			 136
1444 #define EVP_F_EVP_PKEY2PKCS8_BROKEN			 113
1445 #define EVP_F_EVP_PKEY_COPY_PARAMETERS			 103
1446 #define EVP_F_EVP_PKEY_CTX_CTRL				 137
1447 #define EVP_F_EVP_PKEY_CTX_CTRL_STR			 150
1448 #define EVP_F_EVP_PKEY_CTX_DUP				 156
1449 #define EVP_F_EVP_PKEY_DECRYPT				 104
1450 #define EVP_F_EVP_PKEY_DECRYPT_INIT			 138
1451 #define EVP_F_EVP_PKEY_DECRYPT_OLD			 151
1452 #define EVP_F_EVP_PKEY_DERIVE				 153
1453 #define EVP_F_EVP_PKEY_DERIVE_INIT			 154
1454 #define EVP_F_EVP_PKEY_DERIVE_SET_PEER			 155
1455 #define EVP_F_EVP_PKEY_ENCRYPT				 105
1456 #define EVP_F_EVP_PKEY_ENCRYPT_INIT			 139
1457 #define EVP_F_EVP_PKEY_ENCRYPT_OLD			 152
1458 #define EVP_F_EVP_PKEY_GET1_DH				 119
1459 #define EVP_F_EVP_PKEY_GET1_DSA				 120
1460 #define EVP_F_EVP_PKEY_GET1_ECDSA			 130
1461 #define EVP_F_EVP_PKEY_GET1_EC_KEY			 131
1462 #define EVP_F_EVP_PKEY_GET1_RSA				 121
1463 #define EVP_F_EVP_PKEY_KEYGEN				 146
1464 #define EVP_F_EVP_PKEY_KEYGEN_INIT			 147
1465 #define EVP_F_EVP_PKEY_NEW				 106
1466 #define EVP_F_EVP_PKEY_PARAMGEN				 148
1467 #define EVP_F_EVP_PKEY_PARAMGEN_INIT			 149
1468 #define EVP_F_EVP_PKEY_SIGN				 140
1469 #define EVP_F_EVP_PKEY_SIGN_INIT			 141
1470 #define EVP_F_EVP_PKEY_VERIFY				 142
1471 #define EVP_F_EVP_PKEY_VERIFY_INIT			 143
1472 #define EVP_F_EVP_PKEY_VERIFY_RECOVER			 144
1473 #define EVP_F_EVP_PKEY_VERIFY_RECOVER_INIT		 145
1474 #define EVP_F_EVP_RIJNDAEL				 126
1475 #define EVP_F_EVP_SIGNFINAL				 107
1476 #define EVP_F_EVP_VERIFYFINAL				 108
1477 #define EVP_F_FIPS_CIPHERINIT				 166
1478 #define EVP_F_FIPS_CIPHER_CTX_COPY			 170
1479 #define EVP_F_FIPS_CIPHER_CTX_CTRL			 167
1480 #define EVP_F_FIPS_CIPHER_CTX_SET_KEY_LENGTH		 171
1481 #define EVP_F_FIPS_DIGESTINIT				 168
1482 #define EVP_F_FIPS_MD_CTX_COPY				 169
1483 #define EVP_F_HMAC_INIT_EX				 174
1484 #define EVP_F_INT_CTX_NEW				 157
1485 #define EVP_F_PKCS5_PBE_KEYIVGEN			 117
1486 #define EVP_F_PKCS5_V2_PBE_KEYIVGEN			 118
1487 #define EVP_F_PKCS5_V2_PBKDF2_KEYIVGEN			 164
1488 #define EVP_F_PKCS8_SET_BROKEN				 112
1489 #define EVP_F_PKEY_SET_TYPE				 158
1490 #define EVP_F_RC2_GET_ASN1_TYPE_AND_IV			 197
1491 #define EVP_F_RC2_MAGIC_TO_METH				 109
1492 #define EVP_F_RC5_CTRL					 125
1493 
1494 /* Reason codes. */
1495 #define EVP_R_AES_IV_SETUP_FAILED			 162
1496 #define EVP_R_AES_KEY_SETUP_FAILED			 143
1497 #define EVP_R_ASN1_LIB					 140
1498 #define EVP_R_BAD_BLOCK_LENGTH				 136
1499 #define EVP_R_BAD_DECRYPT				 100
1500 #define EVP_R_BAD_KEY_LENGTH				 137
1501 #define EVP_R_BN_DECODE_ERROR				 112
1502 #define EVP_R_BN_PUBKEY_ERROR				 113
1503 #define EVP_R_BUFFER_TOO_SMALL				 155
1504 #define EVP_R_CAMELLIA_KEY_SETUP_FAILED			 157
1505 #define EVP_R_CIPHER_PARAMETER_ERROR			 122
1506 #define EVP_R_COMMAND_NOT_SUPPORTED			 147
1507 #define EVP_R_CTRL_NOT_IMPLEMENTED			 132
1508 #define EVP_R_CTRL_OPERATION_NOT_IMPLEMENTED		 133
1509 #define EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH		 138
1510 #define EVP_R_DECODE_ERROR				 114
1511 #define EVP_R_DIFFERENT_KEY_TYPES			 101
1512 #define EVP_R_DIFFERENT_PARAMETERS			 153
1513 #define EVP_R_DISABLED_FOR_FIPS				 163
1514 #define EVP_R_ENCODE_ERROR				 115
1515 #define EVP_R_ERROR_LOADING_SECTION			 165
1516 #define EVP_R_ERROR_SETTING_FIPS_MODE			 166
1517 #define EVP_R_EVP_PBE_CIPHERINIT_ERROR			 119
1518 #define EVP_R_EXPECTING_AN_HMAC_KEY			 174
1519 #define EVP_R_EXPECTING_AN_RSA_KEY			 127
1520 #define EVP_R_EXPECTING_A_DH_KEY			 128
1521 #define EVP_R_EXPECTING_A_DSA_KEY			 129
1522 #define EVP_R_EXPECTING_A_ECDSA_KEY			 141
1523 #define EVP_R_EXPECTING_A_EC_KEY			 142
1524 #define EVP_R_FIPS_MODE_NOT_SUPPORTED			 167
1525 #define EVP_R_INITIALIZATION_ERROR			 134
1526 #define EVP_R_INPUT_NOT_INITIALIZED			 111
1527 #define EVP_R_INVALID_DIGEST				 152
1528 #define EVP_R_INVALID_FIPS_MODE				 168
1529 #define EVP_R_INVALID_IV_LENGTH				 194
1530 #define EVP_R_INVALID_KEY_LENGTH			 130
1531 #define EVP_R_INVALID_OPERATION				 148
1532 #define EVP_R_IV_TOO_LARGE				 102
1533 #define EVP_R_KEYGEN_FAILURE				 120
1534 #define EVP_R_KEY_SETUP_FAILED				 180
1535 #define EVP_R_MESSAGE_DIGEST_IS_NULL			 159
1536 #define EVP_R_METHOD_NOT_SUPPORTED			 144
1537 #define EVP_R_MISSING_PARAMETERS			 103
1538 #define EVP_R_NO_CIPHER_SET				 131
1539 #define EVP_R_NO_DEFAULT_DIGEST				 158
1540 #define EVP_R_NO_DIGEST_SET				 139
1541 #define EVP_R_NO_DSA_PARAMETERS				 116
1542 #define EVP_R_NO_KEY_SET				 154
1543 #define EVP_R_NO_OPERATION_SET				 149
1544 #define EVP_R_NO_SIGN_FUNCTION_CONFIGURED		 104
1545 #define EVP_R_NO_VERIFY_FUNCTION_CONFIGURED		 105
1546 #define EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE	 150
1547 #define EVP_R_OPERATON_NOT_INITIALIZED			 151
1548 #define EVP_R_OUTPUT_ALIASES_INPUT			 172
1549 #define EVP_R_PKCS8_UNKNOWN_BROKEN_TYPE			 117
1550 #define EVP_R_PRIVATE_KEY_DECODE_ERROR			 145
1551 #define EVP_R_PRIVATE_KEY_ENCODE_ERROR			 146
1552 #define EVP_R_PUBLIC_KEY_NOT_RSA			 106
1553 #define EVP_R_TAG_TOO_LARGE				 171
1554 #define EVP_R_TOO_LARGE					 164
1555 #define EVP_R_UNKNOWN_CIPHER				 160
1556 #define EVP_R_UNKNOWN_DIGEST				 161
1557 #define EVP_R_UNKNOWN_OPTION				 169
1558 #define EVP_R_UNKNOWN_PBE_ALGORITHM			 121
1559 #define EVP_R_UNSUPORTED_NUMBER_OF_ROUNDS		 135
1560 #define EVP_R_UNSUPPORTED_ALGORITHM			 156
1561 #define EVP_R_UNSUPPORTED_CIPHER			 107
1562 #define EVP_R_UNSUPPORTED_KEYLENGTH			 123
1563 #define EVP_R_UNSUPPORTED_KEY_DERIVATION_FUNCTION	 124
1564 #define EVP_R_UNSUPPORTED_KEY_SIZE			 108
1565 #define EVP_R_UNSUPPORTED_PRF				 125
1566 #define EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM		 118
1567 #define EVP_R_WRAP_MODE_NOT_ALLOWED			 170
1568 #define EVP_R_UNSUPPORTED_SALT_TYPE			 126
1569 #define EVP_R_WRONG_FINAL_BLOCK_LENGTH			 109
1570 #define EVP_R_WRONG_PUBLIC_KEY_TYPE			 110
1571 
1572 #ifdef  __cplusplus
1573 }
1574 #endif
1575 #endif
1576