xref: /openbsd-src/lib/libcrypto/evp/evp.h (revision 5e9af9078020584d0b66e51e331ac8bba4c31b4c)
1 /* $OpenBSD: evp.h,v 1.120 2023/10/18 17:26:06 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_HKDF		NID_hkdf
116 #define EVP_PKEY_GOSTR12_256	NID_id_tc26_gost3410_2012_256
117 #define EVP_PKEY_GOSTR12_512	NID_id_tc26_gost3410_2012_512
118 #define EVP_PKEY_ED25519	NID_ED25519
119 #define EVP_PKEY_X25519		NID_X25519
120 
121 #ifdef	__cplusplus
122 extern "C" {
123 #endif
124 
125 #define EVP_PKEY_MO_SIGN	0x0001
126 #define EVP_PKEY_MO_VERIFY	0x0002
127 #define EVP_PKEY_MO_ENCRYPT	0x0004
128 #define EVP_PKEY_MO_DECRYPT	0x0008
129 
130 #ifndef EVP_MD
131 #define EVP_MD_FLAG_ONESHOT	0x0001 /* digest can only handle a single
132 					* block */
133 
134 /* DigestAlgorithmIdentifier flags... */
135 
136 #define EVP_MD_FLAG_DIGALGID_MASK		0x0018
137 
138 /* NULL or absent parameter accepted. Use NULL */
139 
140 #define EVP_MD_FLAG_DIGALGID_NULL		0x0000
141 
142 /* NULL or absent parameter accepted. Use NULL for PKCS#1 otherwise absent */
143 
144 #define EVP_MD_FLAG_DIGALGID_ABSENT		0x0008
145 
146 /* Custom handling via ctrl */
147 
148 #define EVP_MD_FLAG_DIGALGID_CUSTOM		0x0018
149 
150 #define EVP_MD_FLAG_FIPS	0x0400 /* Note if suitable for use in FIPS mode */
151 
152 /* Digest ctrls */
153 
154 #define	EVP_MD_CTRL_DIGALGID			0x1
155 #define	EVP_MD_CTRL_MICALG			0x2
156 #define	EVP_MD_CTRL_SET_KEY			0x3
157 #define	EVP_MD_CTRL_GOST_SET_SBOX		0x4
158 
159 /* Minimum Algorithm specific ctrl value */
160 
161 #define	EVP_MD_CTRL_ALG_CTRL			0x1000
162 
163 #endif /* !EVP_MD */
164 
165 /* values for EVP_MD_CTX flags */
166 
167 #define EVP_MD_CTX_FLAG_ONESHOT		0x0001 /* digest update will be called
168 						* once only */
169 #define EVP_MD_CTX_FLAG_CLEANED		0x0002 /* context has already been
170 						* cleaned */
171 #define EVP_MD_CTX_FLAG_REUSE		0x0004 /* Don't free up ctx->md_data
172 						* in EVP_MD_CTX_cleanup */
173 /* FIPS and pad options are ignored in 1.0.0, definitions are here
174  * so we don't accidentally reuse the values for other purposes.
175  */
176 
177 #define EVP_MD_CTX_FLAG_NON_FIPS_ALLOW	0x0008	/* Allow use of non FIPS digest
178 						 * in FIPS mode */
179 
180 /* The following PAD options are also currently ignored in 1.0.0, digest
181  * parameters are handled through EVP_DigestSign*() and EVP_DigestVerify*()
182  * instead.
183  */
184 #define EVP_MD_CTX_FLAG_PAD_MASK	0xF0	/* RSA mode to use */
185 #define EVP_MD_CTX_FLAG_PAD_PKCS1	0x00	/* PKCS#1 v1.5 mode */
186 #define EVP_MD_CTX_FLAG_PAD_PSS		0x20	/* PSS mode */
187 
188 #define EVP_MD_CTX_FLAG_NO_INIT		0x0100 /* Don't initialize md_data */
189 
190 /* Values for cipher flags */
191 
192 /* Modes for ciphers */
193 
194 #define		EVP_CIPH_STREAM_CIPHER		0x0
195 #define		EVP_CIPH_ECB_MODE		0x1
196 #define		EVP_CIPH_CBC_MODE		0x2
197 #define		EVP_CIPH_CFB_MODE		0x3
198 #define		EVP_CIPH_OFB_MODE		0x4
199 #define		EVP_CIPH_CTR_MODE		0x5
200 #define		EVP_CIPH_GCM_MODE		0x6
201 #define		EVP_CIPH_CCM_MODE		0x7
202 #define		EVP_CIPH_XTS_MODE		0x10001
203 #define		EVP_CIPH_WRAP_MODE		0x10002
204 #define		EVP_CIPH_MODE			0xF0007
205 /* Set if variable length cipher */
206 #define		EVP_CIPH_VARIABLE_LENGTH	0x8
207 /* Set if the iv handling should be done by the cipher itself */
208 #define		EVP_CIPH_CUSTOM_IV		0x10
209 /* Set if the cipher's init() function should be called if key is NULL */
210 #define		EVP_CIPH_ALWAYS_CALL_INIT	0x20
211 /* Call ctrl() to init cipher parameters */
212 #define		EVP_CIPH_CTRL_INIT		0x40
213 /* Don't use standard key length function */
214 #define		EVP_CIPH_CUSTOM_KEY_LENGTH	0x80
215 /* Don't use standard block padding */
216 #define		EVP_CIPH_NO_PADDING		0x100
217 /* cipher handles random key generation */
218 #define		EVP_CIPH_RAND_KEY		0x200
219 /* cipher has its own additional copying logic */
220 #define		EVP_CIPH_CUSTOM_COPY		0x400
221 /* Allow use default ASN1 get/set iv */
222 #define		EVP_CIPH_FLAG_DEFAULT_ASN1	0x1000
223 /* Buffer length in bits not bytes: CFB1 mode only */
224 #define		EVP_CIPH_FLAG_LENGTH_BITS	0x2000
225 /* Note if suitable for use in FIPS mode */
226 #define		EVP_CIPH_FLAG_FIPS		0x4000
227 /* Allow non FIPS cipher in FIPS mode */
228 #define		EVP_CIPH_FLAG_NON_FIPS_ALLOW	0x8000
229 /* Cipher handles any and all padding logic as well
230  * as finalisation.
231  */
232 #define		EVP_CIPH_FLAG_CUSTOM_CIPHER	0x100000
233 #define		EVP_CIPH_FLAG_AEAD_CIPHER	0x200000
234 
235 /*
236  * Cipher context flag to indicate that we can handle wrap mode: if allowed in
237  * older applications, it could overflow buffers.
238  */
239 #define		EVP_CIPHER_CTX_FLAG_WRAP_ALLOW	0x1
240 
241 /* ctrl() values */
242 
243 #define		EVP_CTRL_INIT			0x0
244 #define		EVP_CTRL_SET_KEY_LENGTH		0x1
245 #define		EVP_CTRL_GET_RC2_KEY_BITS	0x2
246 #define		EVP_CTRL_SET_RC2_KEY_BITS	0x3
247 #define		EVP_CTRL_GET_RC5_ROUNDS		0x4
248 #define		EVP_CTRL_SET_RC5_ROUNDS		0x5
249 #define		EVP_CTRL_RAND_KEY		0x6
250 #define		EVP_CTRL_PBE_PRF_NID		0x7
251 #define		EVP_CTRL_COPY			0x8
252 #define		EVP_CTRL_AEAD_SET_IVLEN		0x9
253 #define		EVP_CTRL_AEAD_GET_TAG		0x10
254 #define		EVP_CTRL_AEAD_SET_TAG		0x11
255 #define		EVP_CTRL_AEAD_SET_IV_FIXED	0x12
256 #define		EVP_CTRL_GCM_SET_IVLEN		EVP_CTRL_AEAD_SET_IVLEN
257 #define		EVP_CTRL_GCM_GET_TAG		EVP_CTRL_AEAD_GET_TAG
258 #define		EVP_CTRL_GCM_SET_TAG		EVP_CTRL_AEAD_SET_TAG
259 #define		EVP_CTRL_GCM_SET_IV_FIXED	EVP_CTRL_AEAD_SET_IV_FIXED
260 #define		EVP_CTRL_GCM_IV_GEN		0x13
261 #define		EVP_CTRL_CCM_SET_IVLEN		EVP_CTRL_AEAD_SET_IVLEN
262 #define		EVP_CTRL_CCM_GET_TAG		EVP_CTRL_AEAD_GET_TAG
263 #define		EVP_CTRL_CCM_SET_TAG		EVP_CTRL_AEAD_SET_TAG
264 #define		EVP_CTRL_CCM_SET_L		0x14
265 #define		EVP_CTRL_CCM_SET_MSGLEN		0x15
266 /* AEAD cipher deduces payload length and returns number of bytes
267  * required to store MAC and eventual padding. Subsequent call to
268  * EVP_Cipher even appends/verifies MAC.
269  */
270 #define		EVP_CTRL_AEAD_TLS1_AAD		0x16
271 /* Used by composite AEAD ciphers, no-op in GCM, CCM... */
272 #define		EVP_CTRL_AEAD_SET_MAC_KEY	0x17
273 /* Set the GCM invocation field, decrypt only */
274 #define		EVP_CTRL_GCM_SET_IV_INV		0x18
275 /* Set the S-BOX NID for GOST ciphers */
276 #define		EVP_CTRL_GOST_SET_SBOX		0x19
277 
278 /* GCM TLS constants */
279 /* Length of fixed part of IV derived from PRF */
280 #define EVP_GCM_TLS_FIXED_IV_LEN			4
281 /* Length of explicit part of IV part of TLS records */
282 #define EVP_GCM_TLS_EXPLICIT_IV_LEN			8
283 /* Length of tag for TLS */
284 #define EVP_GCM_TLS_TAG_LEN				16
285 
286 /* CCM TLS constants */
287 /* Length of fixed part of IV derived from PRF */
288 #define EVP_CCM_TLS_FIXED_IV_LEN			4
289 /* Length of explicit part of IV part of TLS records */
290 #define EVP_CCM_TLS_EXPLICIT_IV_LEN			8
291 /* Total length of CCM IV length for TLS */
292 #define EVP_CCM_TLS_IV_LEN				12
293 /* Length of tag for TLS */
294 #define EVP_CCM_TLS_TAG_LEN				16
295 /* Length of CCM8 tag for TLS */
296 #define EVP_CCM8_TLS_TAG_LEN				8
297 
298 /* Length of tag for TLS */
299 #define EVP_CHACHAPOLY_TLS_TAG_LEN			16
300 
301 /* XXX - do we want to expose these? */
302 #if defined(LIBRESSL_INTERNAL)
303 #define ED25519_KEYLEN					32
304 #define X25519_KEYLEN					32
305 #endif
306 
307 typedef struct evp_cipher_info_st {
308 	const EVP_CIPHER *cipher;
309 	unsigned char iv[EVP_MAX_IV_LENGTH];
310 } EVP_CIPHER_INFO;
311 
312 /* Password based encryption function */
313 typedef int EVP_PBE_KEYGEN(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
314     ASN1_TYPE *param, const EVP_CIPHER *cipher, const EVP_MD *md, int en_de);
315 
316 #ifndef OPENSSL_NO_RSA
317 #define EVP_PKEY_assign_RSA(pkey,rsa) EVP_PKEY_assign((pkey),EVP_PKEY_RSA,\
318 					(char *)(rsa))
319 #endif
320 
321 #ifndef OPENSSL_NO_DSA
322 #define EVP_PKEY_assign_DSA(pkey,dsa) EVP_PKEY_assign((pkey),EVP_PKEY_DSA,\
323 					(char *)(dsa))
324 #endif
325 
326 #ifndef OPENSSL_NO_DH
327 #define EVP_PKEY_assign_DH(pkey,dh) EVP_PKEY_assign((pkey),EVP_PKEY_DH,\
328 					(char *)(dh))
329 #endif
330 
331 #ifndef OPENSSL_NO_EC
332 #define EVP_PKEY_assign_EC_KEY(pkey,eckey) EVP_PKEY_assign((pkey),EVP_PKEY_EC,\
333                                         (char *)(eckey))
334 #endif
335 
336 #ifndef OPENSSL_NO_GOST
337 #define EVP_PKEY_assign_GOST(pkey,gostkey) EVP_PKEY_assign((pkey),EVP_PKEY_GOSTR01,\
338                                         (char *)(gostkey))
339 #endif
340 
341 /* Add some extra combinations */
342 #define EVP_get_digestbynid(a) EVP_get_digestbyname(OBJ_nid2sn(a))
343 #define EVP_get_digestbyobj(a) EVP_get_digestbynid(OBJ_obj2nid(a))
344 #define EVP_get_cipherbynid(a) EVP_get_cipherbyname(OBJ_nid2sn(a))
345 #define EVP_get_cipherbyobj(a) EVP_get_cipherbynid(OBJ_obj2nid(a))
346 
347 int EVP_MD_type(const EVP_MD *md);
348 #define EVP_MD_nid(e)			EVP_MD_type(e)
349 #define EVP_MD_name(e)			OBJ_nid2sn(EVP_MD_nid(e))
350 int EVP_MD_pkey_type(const EVP_MD *md);
351 int EVP_MD_size(const EVP_MD *md);
352 int EVP_MD_block_size(const EVP_MD *md);
353 unsigned long EVP_MD_flags(const EVP_MD *md);
354 
355 EVP_MD *EVP_MD_meth_new(int md_type, int pkey_type);
356 void EVP_MD_meth_free(EVP_MD *md);
357 EVP_MD *EVP_MD_meth_dup(const EVP_MD *md);
358 int EVP_MD_meth_set_input_blocksize(EVP_MD *md, int blocksize);
359 int EVP_MD_meth_set_result_size(EVP_MD *md, int resultsize);
360 int EVP_MD_meth_set_app_datasize(EVP_MD *md, int datasize);
361 int EVP_MD_meth_set_flags(EVP_MD *md, unsigned long flags);
362 int EVP_MD_meth_set_init(EVP_MD *md, int (*init)(EVP_MD_CTX *ctx));
363 int EVP_MD_meth_set_update(EVP_MD *md,
364     int (*update)(EVP_MD_CTX *ctx, const void *data, size_t count));
365 int EVP_MD_meth_set_final(EVP_MD *md,
366     int (*final)(EVP_MD_CTX *ctx, unsigned char *md));
367 int EVP_MD_meth_set_copy(EVP_MD *md,
368     int (*copy)(EVP_MD_CTX *to, const EVP_MD_CTX *from));
369 int EVP_MD_meth_set_cleanup(EVP_MD *md, int (*cleanup)(EVP_MD_CTX *ctx));
370 int EVP_MD_meth_set_ctrl(EVP_MD *md,
371     int (*ctrl)(EVP_MD_CTX *ctx, int cmd, int p1, void *p2));
372 
373 const EVP_MD *EVP_MD_CTX_md(const EVP_MD_CTX *ctx);
374 void *EVP_MD_CTX_md_data(const EVP_MD_CTX *ctx);
375 EVP_PKEY_CTX *EVP_MD_CTX_pkey_ctx(const EVP_MD_CTX *ctx);
376 void EVP_MD_CTX_set_pkey_ctx(EVP_MD_CTX *ctx, EVP_PKEY_CTX *pctx);
377 #define EVP_MD_CTX_size(e)		EVP_MD_size(EVP_MD_CTX_md(e))
378 #define EVP_MD_CTX_block_size(e)	EVP_MD_block_size(EVP_MD_CTX_md(e))
379 #define EVP_MD_CTX_type(e)		EVP_MD_type(EVP_MD_CTX_md(e))
380 
381 int EVP_CIPHER_nid(const EVP_CIPHER *cipher);
382 #define EVP_CIPHER_name(e)		OBJ_nid2sn(EVP_CIPHER_nid(e))
383 int EVP_CIPHER_block_size(const EVP_CIPHER *cipher);
384 int EVP_CIPHER_key_length(const EVP_CIPHER *cipher);
385 int EVP_CIPHER_iv_length(const EVP_CIPHER *cipher);
386 unsigned long EVP_CIPHER_flags(const EVP_CIPHER *cipher);
387 #define EVP_CIPHER_mode(e)		(EVP_CIPHER_flags(e) & EVP_CIPH_MODE)
388 
389 const EVP_CIPHER * EVP_CIPHER_CTX_cipher(const EVP_CIPHER_CTX *ctx);
390 int EVP_CIPHER_CTX_encrypting(const EVP_CIPHER_CTX *ctx);
391 int EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX *ctx);
392 int EVP_CIPHER_CTX_block_size(const EVP_CIPHER_CTX *ctx);
393 int EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx);
394 int EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX *ctx);
395 int EVP_CIPHER_CTX_get_iv(const EVP_CIPHER_CTX *ctx,
396     unsigned char *iv, size_t len);
397 int EVP_CIPHER_CTX_set_iv(EVP_CIPHER_CTX *ctx,
398     const unsigned char *iv, size_t len);
399 int EVP_CIPHER_CTX_copy(EVP_CIPHER_CTX *out, const EVP_CIPHER_CTX *in);
400 void *EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX *ctx);
401 void EVP_CIPHER_CTX_set_app_data(EVP_CIPHER_CTX *ctx, void *data);
402 void *EVP_CIPHER_CTX_get_cipher_data(const EVP_CIPHER_CTX *ctx);
403 void *EVP_CIPHER_CTX_set_cipher_data(EVP_CIPHER_CTX *ctx, void *cipher_data);
404 unsigned char *EVP_CIPHER_CTX_buf_noconst(EVP_CIPHER_CTX *ctx);
405 #define EVP_CIPHER_CTX_type(c)         EVP_CIPHER_type(EVP_CIPHER_CTX_cipher(c))
406 unsigned long EVP_CIPHER_CTX_flags(const EVP_CIPHER_CTX *ctx);
407 #define EVP_CIPHER_CTX_mode(e)		(EVP_CIPHER_CTX_flags(e) & EVP_CIPH_MODE)
408 
409 EVP_CIPHER *EVP_CIPHER_meth_new(int cipher_type, int block_size, int key_len);
410 EVP_CIPHER *EVP_CIPHER_meth_dup(const EVP_CIPHER *cipher);
411 void EVP_CIPHER_meth_free(EVP_CIPHER *cipher);
412 
413 int EVP_CIPHER_meth_set_iv_length(EVP_CIPHER *cipher, int iv_len);
414 int EVP_CIPHER_meth_set_flags(EVP_CIPHER *cipher, unsigned long flags);
415 int EVP_CIPHER_meth_set_impl_ctx_size(EVP_CIPHER *cipher, int ctx_size);
416 int EVP_CIPHER_meth_set_init(EVP_CIPHER *cipher,
417     int (*init)(EVP_CIPHER_CTX *ctx, const unsigned char *key,
418     const unsigned char *iv, int enc));
419 int EVP_CIPHER_meth_set_do_cipher(EVP_CIPHER *cipher,
420     int (*do_cipher)(EVP_CIPHER_CTX *ctx, unsigned char *out,
421     const unsigned char *in, size_t inl));
422 int EVP_CIPHER_meth_set_cleanup(EVP_CIPHER *cipher,
423     int (*cleanup)(EVP_CIPHER_CTX *));
424 int EVP_CIPHER_meth_set_set_asn1_params(EVP_CIPHER *cipher,
425     int (*set_asn1_parameters)(EVP_CIPHER_CTX *, ASN1_TYPE *));
426 int EVP_CIPHER_meth_set_get_asn1_params(EVP_CIPHER *cipher,
427     int (*get_asn1_parameters)(EVP_CIPHER_CTX *, ASN1_TYPE *));
428 int EVP_CIPHER_meth_set_ctrl(EVP_CIPHER *cipher,
429     int (*ctrl)(EVP_CIPHER_CTX *, int type, int arg, void *ptr));
430 
431 EVP_PKEY *EVP_PKEY_new_raw_private_key(int type, ENGINE *engine,
432     const unsigned char *private_key, size_t len);
433 EVP_PKEY *EVP_PKEY_new_raw_public_key(int type, ENGINE *engine,
434     const unsigned char *public_key, size_t len);
435 int EVP_PKEY_get_raw_private_key(const EVP_PKEY *pkey,
436     unsigned char *out_private_key, size_t *out_len);
437 int EVP_PKEY_get_raw_public_key(const EVP_PKEY *pkey,
438     unsigned char *out_public_key, size_t *out_len);
439 
440 #define EVP_ENCODE_LENGTH(l)	(((l+2)/3*4)+(l/48+1)*2+80)
441 #define EVP_DECODE_LENGTH(l)	((l+3)/4*3+80)
442 
443 #define EVP_SignInit_ex(a,b,c)		EVP_DigestInit_ex(a,b,c)
444 #define EVP_SignInit(a,b)		EVP_DigestInit(a,b)
445 #define EVP_SignUpdate(a,b,c)		EVP_DigestUpdate(a,b,c)
446 #define	EVP_VerifyInit_ex(a,b,c)	EVP_DigestInit_ex(a,b,c)
447 #define	EVP_VerifyInit(a,b)		EVP_DigestInit(a,b)
448 #define	EVP_VerifyUpdate(a,b,c)		EVP_DigestUpdate(a,b,c)
449 #define EVP_OpenUpdate(a,b,c,d,e)	EVP_DecryptUpdate(a,b,c,d,e)
450 #define EVP_SealUpdate(a,b,c,d,e)	EVP_EncryptUpdate(a,b,c,d,e)
451 #define EVP_DigestSignUpdate(a,b,c)	EVP_DigestUpdate(a,b,c)
452 #define EVP_DigestVerifyUpdate(a,b,c)	EVP_DigestUpdate(a,b,c)
453 
454 #define BIO_set_md(b,md)		BIO_ctrl(b,BIO_C_SET_MD,0,(char *)md)
455 #define BIO_get_md(b,mdp)		BIO_ctrl(b,BIO_C_GET_MD,0,(char *)mdp)
456 #define BIO_get_md_ctx(b,mdcp)     BIO_ctrl(b,BIO_C_GET_MD_CTX,0,(char *)mdcp)
457 #define BIO_set_md_ctx(b,mdcp)     BIO_ctrl(b,BIO_C_SET_MD_CTX,0,(char *)mdcp)
458 #define BIO_get_cipher_status(b)	BIO_ctrl(b,BIO_C_GET_CIPHER_STATUS,0,NULL)
459 #define BIO_get_cipher_ctx(b,c_pp)	BIO_ctrl(b,BIO_C_GET_CIPHER_CTX,0,(char *)c_pp)
460 
461 int EVP_Cipher(EVP_CIPHER_CTX *c, unsigned char *out, const unsigned char *in,
462     unsigned int inl);
463 
464 #define EVP_add_cipher_alias(n,alias) \
465 	OBJ_NAME_add((alias),OBJ_NAME_TYPE_CIPHER_METH|OBJ_NAME_ALIAS,(n))
466 #define EVP_add_digest_alias(n,alias) \
467 	OBJ_NAME_add((alias),OBJ_NAME_TYPE_MD_METH|OBJ_NAME_ALIAS,(n))
468 #define EVP_delete_cipher_alias(alias) \
469 	OBJ_NAME_remove(alias,OBJ_NAME_TYPE_CIPHER_METH|OBJ_NAME_ALIAS);
470 #define EVP_delete_digest_alias(alias) \
471 	OBJ_NAME_remove(alias,OBJ_NAME_TYPE_MD_METH|OBJ_NAME_ALIAS);
472 
473 EVP_MD_CTX *EVP_MD_CTX_new(void);
474 void EVP_MD_CTX_free(EVP_MD_CTX *ctx);
475 void EVP_MD_CTX_init(EVP_MD_CTX *ctx);
476 int EVP_MD_CTX_reset(EVP_MD_CTX *ctx);
477 EVP_MD_CTX *EVP_MD_CTX_create(void);
478 void EVP_MD_CTX_destroy(EVP_MD_CTX *ctx);
479 int EVP_MD_CTX_cleanup(EVP_MD_CTX *ctx);
480 int EVP_MD_CTX_copy_ex(EVP_MD_CTX *out, const EVP_MD_CTX *in);
481 void EVP_MD_CTX_set_flags(EVP_MD_CTX *ctx, int flags);
482 void EVP_MD_CTX_clear_flags(EVP_MD_CTX *ctx, int flags);
483 int EVP_MD_CTX_ctrl(EVP_MD_CTX *ctx, int type, int arg, void *ptr);
484 int EVP_MD_CTX_test_flags(const EVP_MD_CTX *ctx, int flags);
485 
486 int EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl);
487 int EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *d, size_t cnt);
488 int EVP_DigestFinal_ex(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *s);
489 int EVP_Digest(const void *data, size_t count, unsigned char *md,
490     unsigned int *size, const EVP_MD *type, ENGINE *impl);
491 
492 int EVP_MD_CTX_copy(EVP_MD_CTX *out, const EVP_MD_CTX *in);
493 int EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type);
494 int EVP_DigestFinal(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *s);
495 
496 int EVP_read_pw_string(char *buf, int length, const char *prompt, int verify);
497 int EVP_read_pw_string_min(char *buf, int minlen, int maxlen,
498     const char *prompt, int verify);
499 void EVP_set_pw_prompt(const char *prompt);
500 char *EVP_get_pw_prompt(void);
501 
502 int EVP_BytesToKey(const EVP_CIPHER *type, const EVP_MD *md,
503     const unsigned char *salt, const unsigned char *data, int datal, int count,
504     unsigned char *key, unsigned char *iv);
505 
506 void EVP_CIPHER_CTX_set_flags(EVP_CIPHER_CTX *ctx, int flags);
507 void EVP_CIPHER_CTX_clear_flags(EVP_CIPHER_CTX *ctx, int flags);
508 int EVP_CIPHER_CTX_test_flags(const EVP_CIPHER_CTX *ctx, int flags);
509 
510 int EVP_EncryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
511     const unsigned char *key, const unsigned char *iv);
512 int EVP_EncryptInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
513     ENGINE *impl, const unsigned char *key, const unsigned char *iv);
514 int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
515     const unsigned char *in, int inl);
516 int EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl);
517 #ifndef LIBRESSL_INTERNAL
518 int EVP_EncryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl);
519 #endif
520 
521 int EVP_DecryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
522     const unsigned char *key, const unsigned char *iv);
523 int EVP_DecryptInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
524     ENGINE *impl, const unsigned char *key, const unsigned char *iv);
525 int EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
526     const unsigned char *in, int inl);
527 int EVP_DecryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *outm, int *outl);
528 #ifndef LIBRESSL_INTERNAL
529 int EVP_DecryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *outm, int *outl);
530 #endif
531 
532 int EVP_CipherInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
533     const unsigned char *key, const unsigned char *iv, int enc);
534 int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
535     ENGINE *impl, const unsigned char *key, const unsigned char *iv, int enc);
536 int EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
537     const unsigned char *in, int inl);
538 int EVP_CipherFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *outm, int *outl);
539 #ifndef LIBRESSL_INTERNAL
540 int EVP_CipherFinal(EVP_CIPHER_CTX *ctx, unsigned char *outm, int *outl);
541 #endif
542 
543 int EVP_SignFinal(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *s,
544     EVP_PKEY *pkey);
545 
546 int EVP_VerifyFinal(EVP_MD_CTX *ctx, const unsigned char *sigbuf,
547     unsigned int siglen, EVP_PKEY *pkey);
548 
549 int EVP_DigestSignInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
550     const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey);
551 int EVP_DigestSignFinal(EVP_MD_CTX *ctx, unsigned char *sigret, size_t *siglen);
552 
553 int EVP_DigestSign(EVP_MD_CTX *ctx, unsigned char *sigret, size_t *siglen,
554     const unsigned char *tbs, size_t tbslen);
555 
556 int EVP_DigestVerifyInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
557     const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey);
558 int EVP_DigestVerifyFinal(EVP_MD_CTX *ctx, const unsigned char *sig,
559     size_t siglen);
560 
561 int EVP_DigestVerify(EVP_MD_CTX *ctx, const unsigned char *sigret,
562     size_t siglen, const unsigned char *tbs, size_t tbslen);
563 
564 int EVP_OpenInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *type,
565     const unsigned char *ek, int ekl, const unsigned char *iv, EVP_PKEY *priv);
566 int EVP_OpenFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl);
567 
568 int EVP_SealInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *type,
569     unsigned char **ek, int *ekl, unsigned char *iv, EVP_PKEY **pubk,
570     int npubk);
571 int EVP_SealFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl);
572 
573 EVP_ENCODE_CTX *EVP_ENCODE_CTX_new(void);
574 void EVP_ENCODE_CTX_free(EVP_ENCODE_CTX *ctx);
575 void EVP_EncodeInit(EVP_ENCODE_CTX *ctx);
576 int EVP_EncodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,
577     const unsigned char *in, int inl);
578 void EVP_EncodeFinal(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl);
579 int EVP_EncodeBlock(unsigned char *t, const unsigned char *f, int n);
580 
581 void EVP_DecodeInit(EVP_ENCODE_CTX *ctx);
582 int EVP_DecodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,
583     const unsigned char *in, int inl);
584 int EVP_DecodeFinal(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl);
585 int EVP_DecodeBlock(unsigned char *t, const unsigned char *f, int n);
586 
587 void EVP_CIPHER_CTX_init(EVP_CIPHER_CTX *a);
588 int EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *a);
589 EVP_CIPHER_CTX *EVP_CIPHER_CTX_new(void);
590 void EVP_CIPHER_CTX_free(EVP_CIPHER_CTX *a);
591 int EVP_CIPHER_CTX_reset(EVP_CIPHER_CTX *a);
592 int EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *x, int keylen);
593 int EVP_CIPHER_CTX_set_padding(EVP_CIPHER_CTX *c, int pad);
594 int EVP_CIPHER_CTX_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr);
595 int EVP_CIPHER_CTX_rand_key(EVP_CIPHER_CTX *ctx, unsigned char *key);
596 
597 #ifndef OPENSSL_NO_BIO
598 const BIO_METHOD *BIO_f_md(void);
599 const BIO_METHOD *BIO_f_base64(void);
600 const BIO_METHOD *BIO_f_cipher(void);
601 int BIO_set_cipher(BIO *b, const EVP_CIPHER *c, const unsigned char *k,
602     const unsigned char *i, int enc);
603 #endif
604 
605 const EVP_MD *EVP_md_null(void);
606 #ifndef OPENSSL_NO_MD4
607 const EVP_MD *EVP_md4(void);
608 #endif
609 #ifndef OPENSSL_NO_MD5
610 const EVP_MD *EVP_md5(void);
611 const EVP_MD *EVP_md5_sha1(void);
612 #endif
613 #ifndef OPENSSL_NO_SHA
614 const EVP_MD *EVP_sha1(void);
615 #endif
616 #ifndef OPENSSL_NO_SHA256
617 const EVP_MD *EVP_sha224(void);
618 const EVP_MD *EVP_sha256(void);
619 #endif
620 #ifndef OPENSSL_NO_SHA512
621 const EVP_MD *EVP_sha384(void);
622 const EVP_MD *EVP_sha512(void);
623 const EVP_MD *EVP_sha512_224(void);
624 const EVP_MD *EVP_sha512_256(void);
625 #endif
626 #ifndef OPENSSL_NO_SHA3
627 const EVP_MD *EVP_sha3_224(void);
628 const EVP_MD *EVP_sha3_256(void);
629 const EVP_MD *EVP_sha3_384(void);
630 const EVP_MD *EVP_sha3_512(void);
631 #endif
632 #ifndef OPENSSL_NO_SM3
633 const EVP_MD *EVP_sm3(void);
634 #endif
635 #ifndef OPENSSL_NO_RIPEMD
636 const EVP_MD *EVP_ripemd160(void);
637 #endif
638 #ifndef OPENSSL_NO_WHIRLPOOL
639 const EVP_MD *EVP_whirlpool(void);
640 #endif
641 #ifndef OPENSSL_NO_GOST
642 const EVP_MD *EVP_gostr341194(void);
643 const EVP_MD *EVP_gost2814789imit(void);
644 const EVP_MD *EVP_streebog256(void);
645 const EVP_MD *EVP_streebog512(void);
646 #endif
647 const EVP_CIPHER *EVP_enc_null(void);		/* does nothing :-) */
648 #ifndef OPENSSL_NO_DES
649 const EVP_CIPHER *EVP_des_ecb(void);
650 const EVP_CIPHER *EVP_des_ede(void);
651 const EVP_CIPHER *EVP_des_ede3(void);
652 const EVP_CIPHER *EVP_des_ede_ecb(void);
653 const EVP_CIPHER *EVP_des_ede3_ecb(void);
654 const EVP_CIPHER *EVP_des_cfb64(void);
655 # define EVP_des_cfb EVP_des_cfb64
656 const EVP_CIPHER *EVP_des_cfb1(void);
657 const EVP_CIPHER *EVP_des_cfb8(void);
658 const EVP_CIPHER *EVP_des_ede_cfb64(void);
659 # define EVP_des_ede_cfb EVP_des_ede_cfb64
660 const EVP_CIPHER *EVP_des_ede3_cfb64(void);
661 # define EVP_des_ede3_cfb EVP_des_ede3_cfb64
662 const EVP_CIPHER *EVP_des_ede3_cfb1(void);
663 const EVP_CIPHER *EVP_des_ede3_cfb8(void);
664 const EVP_CIPHER *EVP_des_ofb(void);
665 const EVP_CIPHER *EVP_des_ede_ofb(void);
666 const EVP_CIPHER *EVP_des_ede3_ofb(void);
667 const EVP_CIPHER *EVP_des_cbc(void);
668 const EVP_CIPHER *EVP_des_ede_cbc(void);
669 const EVP_CIPHER *EVP_des_ede3_cbc(void);
670 const EVP_CIPHER *EVP_desx_cbc(void);
671 #endif
672 #ifndef OPENSSL_NO_RC4
673 const EVP_CIPHER *EVP_rc4(void);
674 const EVP_CIPHER *EVP_rc4_40(void);
675 #ifndef OPENSSL_NO_MD5
676 const EVP_CIPHER *EVP_rc4_hmac_md5(void);
677 #endif
678 #endif
679 #ifndef OPENSSL_NO_IDEA
680 const EVP_CIPHER *EVP_idea_ecb(void);
681 const EVP_CIPHER *EVP_idea_cfb64(void);
682 # define EVP_idea_cfb EVP_idea_cfb64
683 const EVP_CIPHER *EVP_idea_ofb(void);
684 const EVP_CIPHER *EVP_idea_cbc(void);
685 #endif
686 #ifndef OPENSSL_NO_RC2
687 const EVP_CIPHER *EVP_rc2_ecb(void);
688 const EVP_CIPHER *EVP_rc2_cbc(void);
689 const EVP_CIPHER *EVP_rc2_40_cbc(void);
690 const EVP_CIPHER *EVP_rc2_64_cbc(void);
691 const EVP_CIPHER *EVP_rc2_cfb64(void);
692 # define EVP_rc2_cfb EVP_rc2_cfb64
693 const EVP_CIPHER *EVP_rc2_ofb(void);
694 #endif
695 #ifndef OPENSSL_NO_BF
696 const EVP_CIPHER *EVP_bf_ecb(void);
697 const EVP_CIPHER *EVP_bf_cbc(void);
698 const EVP_CIPHER *EVP_bf_cfb64(void);
699 # define EVP_bf_cfb EVP_bf_cfb64
700 const EVP_CIPHER *EVP_bf_ofb(void);
701 #endif
702 #ifndef OPENSSL_NO_CAST
703 const EVP_CIPHER *EVP_cast5_ecb(void);
704 const EVP_CIPHER *EVP_cast5_cbc(void);
705 const EVP_CIPHER *EVP_cast5_cfb64(void);
706 # define EVP_cast5_cfb EVP_cast5_cfb64
707 const EVP_CIPHER *EVP_cast5_ofb(void);
708 #endif
709 #ifndef OPENSSL_NO_AES
710 const EVP_CIPHER *EVP_aes_128_ecb(void);
711 const EVP_CIPHER *EVP_aes_128_cbc(void);
712 const EVP_CIPHER *EVP_aes_128_cfb1(void);
713 const EVP_CIPHER *EVP_aes_128_cfb8(void);
714 const EVP_CIPHER *EVP_aes_128_cfb128(void);
715 # define EVP_aes_128_cfb EVP_aes_128_cfb128
716 const EVP_CIPHER *EVP_aes_128_ofb(void);
717 const EVP_CIPHER *EVP_aes_128_ctr(void);
718 const EVP_CIPHER *EVP_aes_128_ccm(void);
719 const EVP_CIPHER *EVP_aes_128_gcm(void);
720 const EVP_CIPHER *EVP_aes_128_wrap(void);
721 const EVP_CIPHER *EVP_aes_128_xts(void);
722 const EVP_CIPHER *EVP_aes_192_ecb(void);
723 const EVP_CIPHER *EVP_aes_192_cbc(void);
724 const EVP_CIPHER *EVP_aes_192_cfb1(void);
725 const EVP_CIPHER *EVP_aes_192_cfb8(void);
726 const EVP_CIPHER *EVP_aes_192_cfb128(void);
727 # define EVP_aes_192_cfb EVP_aes_192_cfb128
728 const EVP_CIPHER *EVP_aes_192_ofb(void);
729 const EVP_CIPHER *EVP_aes_192_ctr(void);
730 const EVP_CIPHER *EVP_aes_192_ccm(void);
731 const EVP_CIPHER *EVP_aes_192_gcm(void);
732 const EVP_CIPHER *EVP_aes_192_wrap(void);
733 const EVP_CIPHER *EVP_aes_256_ecb(void);
734 const EVP_CIPHER *EVP_aes_256_cbc(void);
735 const EVP_CIPHER *EVP_aes_256_cfb1(void);
736 const EVP_CIPHER *EVP_aes_256_cfb8(void);
737 const EVP_CIPHER *EVP_aes_256_cfb128(void);
738 # define EVP_aes_256_cfb EVP_aes_256_cfb128
739 const EVP_CIPHER *EVP_aes_256_ofb(void);
740 const EVP_CIPHER *EVP_aes_256_ctr(void);
741 const EVP_CIPHER *EVP_aes_256_ccm(void);
742 const EVP_CIPHER *EVP_aes_256_gcm(void);
743 const EVP_CIPHER *EVP_aes_256_wrap(void);
744 const EVP_CIPHER *EVP_aes_256_xts(void);
745 #if !defined(OPENSSL_NO_CHACHA) && !defined(OPENSSL_NO_POLY1305)
746 const EVP_CIPHER *EVP_chacha20_poly1305(void);
747 #endif
748 #if !defined(OPENSSL_NO_SHA) && !defined(OPENSSL_NO_SHA1)
749 const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha1(void);
750 const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha1(void);
751 #endif
752 #endif
753 #ifndef OPENSSL_NO_CAMELLIA
754 const EVP_CIPHER *EVP_camellia_128_ecb(void);
755 const EVP_CIPHER *EVP_camellia_128_cbc(void);
756 const EVP_CIPHER *EVP_camellia_128_cfb1(void);
757 const EVP_CIPHER *EVP_camellia_128_cfb8(void);
758 const EVP_CIPHER *EVP_camellia_128_cfb128(void);
759 # define EVP_camellia_128_cfb EVP_camellia_128_cfb128
760 const EVP_CIPHER *EVP_camellia_128_ofb(void);
761 const EVP_CIPHER *EVP_camellia_192_ecb(void);
762 const EVP_CIPHER *EVP_camellia_192_cbc(void);
763 const EVP_CIPHER *EVP_camellia_192_cfb1(void);
764 const EVP_CIPHER *EVP_camellia_192_cfb8(void);
765 const EVP_CIPHER *EVP_camellia_192_cfb128(void);
766 # define EVP_camellia_192_cfb EVP_camellia_192_cfb128
767 const EVP_CIPHER *EVP_camellia_192_ofb(void);
768 const EVP_CIPHER *EVP_camellia_256_ecb(void);
769 const EVP_CIPHER *EVP_camellia_256_cbc(void);
770 const EVP_CIPHER *EVP_camellia_256_cfb1(void);
771 const EVP_CIPHER *EVP_camellia_256_cfb8(void);
772 const EVP_CIPHER *EVP_camellia_256_cfb128(void);
773 # define EVP_camellia_256_cfb EVP_camellia_256_cfb128
774 const EVP_CIPHER *EVP_camellia_256_ofb(void);
775 #endif
776 
777 #ifndef OPENSSL_NO_CHACHA
778 const EVP_CIPHER *EVP_chacha20(void);
779 #endif
780 
781 #ifndef OPENSSL_NO_GOST
782 const EVP_CIPHER *EVP_gost2814789_ecb(void);
783 const EVP_CIPHER *EVP_gost2814789_cfb64(void);
784 const EVP_CIPHER *EVP_gost2814789_cnt(void);
785 #endif
786 
787 #ifndef OPENSSL_NO_SM4
788 const EVP_CIPHER *EVP_sm4_ecb(void);
789 const EVP_CIPHER *EVP_sm4_cbc(void);
790 const EVP_CIPHER *EVP_sm4_cfb128(void);
791 #define EVP_sm4_cfb EVP_sm4_cfb128
792 const EVP_CIPHER *EVP_sm4_ofb(void);
793 const EVP_CIPHER *EVP_sm4_ctr(void);
794 #endif
795 
796 void OPENSSL_add_all_algorithms_noconf(void);
797 void OPENSSL_add_all_algorithms_conf(void);
798 
799 #ifdef OPENSSL_LOAD_CONF
800 #define OpenSSL_add_all_algorithms() OPENSSL_add_all_algorithms_conf()
801 #else
802 #define OpenSSL_add_all_algorithms() OPENSSL_add_all_algorithms_noconf()
803 #endif
804 
805 void OpenSSL_add_all_ciphers(void);
806 void OpenSSL_add_all_digests(void);
807 
808 #define SSLeay_add_all_algorithms() OpenSSL_add_all_algorithms()
809 #define SSLeay_add_all_ciphers() OpenSSL_add_all_ciphers()
810 #define SSLeay_add_all_digests() OpenSSL_add_all_digests()
811 
812 int EVP_add_cipher(const EVP_CIPHER *cipher);
813 int EVP_add_digest(const EVP_MD *digest);
814 
815 const EVP_CIPHER *EVP_get_cipherbyname(const char *name);
816 const EVP_MD *EVP_get_digestbyname(const char *name);
817 void EVP_cleanup(void);
818 
819 void EVP_CIPHER_do_all(void (*fn)(const EVP_CIPHER *ciph, const char *from,
820     const char *to, void *x), void *arg);
821 void EVP_CIPHER_do_all_sorted(void (*fn)(const EVP_CIPHER *ciph,
822     const char *from, const char *to, void *x), void *arg);
823 
824 void EVP_MD_do_all(void (*fn)(const EVP_MD *ciph, const char *from,
825     const char *to, void *x), void *arg);
826 void EVP_MD_do_all_sorted(void (*fn)(const EVP_MD *ciph, const char *from,
827     const char *to, void *x), void *arg);
828 
829 int EVP_PKEY_decrypt_old(unsigned char *dec_key, const unsigned char *enc_key,
830     int enc_key_len, EVP_PKEY *private_key);
831 int EVP_PKEY_encrypt_old(unsigned char *enc_key, const unsigned char *key,
832     int key_len, EVP_PKEY *pub_key);
833 int EVP_PKEY_type(int type);
834 int EVP_PKEY_id(const EVP_PKEY *pkey);
835 int EVP_PKEY_base_id(const EVP_PKEY *pkey);
836 int EVP_PKEY_bits(const EVP_PKEY *pkey);
837 int EVP_PKEY_security_bits(const EVP_PKEY *pkey);
838 int EVP_PKEY_size(const EVP_PKEY *pkey);
839 int EVP_PKEY_set_type(EVP_PKEY *pkey, int type);
840 int EVP_PKEY_set_type_str(EVP_PKEY *pkey, const char *str, int len);
841 int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key);
842 void *EVP_PKEY_get0(const EVP_PKEY *pkey);
843 const unsigned char *EVP_PKEY_get0_hmac(const EVP_PKEY *pkey, size_t *len);
844 
845 #ifndef OPENSSL_NO_RSA
846 struct rsa_st;
847 struct rsa_st *EVP_PKEY_get0_RSA(EVP_PKEY *pkey);
848 struct rsa_st *EVP_PKEY_get1_RSA(EVP_PKEY *pkey);
849 int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, struct rsa_st *key);
850 #endif
851 #ifndef OPENSSL_NO_DSA
852 struct dsa_st;
853 struct dsa_st *EVP_PKEY_get0_DSA(EVP_PKEY *pkey);
854 struct dsa_st *EVP_PKEY_get1_DSA(EVP_PKEY *pkey);
855 int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, struct dsa_st *key);
856 #endif
857 #ifndef OPENSSL_NO_DH
858 struct dh_st;
859 struct dh_st *EVP_PKEY_get0_DH(EVP_PKEY *pkey);
860 struct dh_st *EVP_PKEY_get1_DH(EVP_PKEY *pkey);
861 int EVP_PKEY_set1_DH(EVP_PKEY *pkey, struct dh_st *key);
862 #endif
863 #ifndef OPENSSL_NO_EC
864 struct ec_key_st;
865 struct ec_key_st *EVP_PKEY_get0_EC_KEY(EVP_PKEY *pkey);
866 struct ec_key_st *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey);
867 int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, struct ec_key_st *key);
868 #endif
869 #ifndef OPENSSL_NO_GOST
870 struct gost_key_st;
871 #endif
872 
873 EVP_PKEY *EVP_PKEY_new(void);
874 void EVP_PKEY_free(EVP_PKEY *pkey);
875 int EVP_PKEY_up_ref(EVP_PKEY *pkey);
876 
877 EVP_PKEY *d2i_PublicKey(int type, EVP_PKEY **a, const unsigned char **pp,
878     long length);
879 int i2d_PublicKey(EVP_PKEY *a, unsigned char **pp);
880 
881 EVP_PKEY *d2i_PrivateKey(int type, EVP_PKEY **a, const unsigned char **pp,
882     long length);
883 EVP_PKEY *d2i_AutoPrivateKey(EVP_PKEY **a, const unsigned char **pp,
884     long length);
885 int i2d_PrivateKey(EVP_PKEY *a, unsigned char **pp);
886 
887 int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from);
888 int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey);
889 int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode);
890 int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b);
891 
892 int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b);
893 
894 int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey, int indent,
895     ASN1_PCTX *pctx);
896 int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey, int indent,
897     ASN1_PCTX *pctx);
898 int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey, int indent,
899     ASN1_PCTX *pctx);
900 
901 int EVP_PKEY_get_default_digest_nid(EVP_PKEY *pkey, int *pnid);
902 
903 int EVP_CIPHER_type(const EVP_CIPHER *ctx);
904 
905 /* calls methods */
906 int EVP_CIPHER_param_to_asn1(EVP_CIPHER_CTX *c, ASN1_TYPE *type);
907 int EVP_CIPHER_asn1_to_param(EVP_CIPHER_CTX *c, ASN1_TYPE *type);
908 
909 /* These are used by EVP_CIPHER methods */
910 int EVP_CIPHER_set_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type);
911 int EVP_CIPHER_get_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type);
912 
913 /* PKCS5 password based encryption */
914 int PKCS5_PBE_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
915     ASN1_TYPE *param, const EVP_CIPHER *cipher, const EVP_MD *md, int en_de);
916 int PKCS5_PBKDF2_HMAC_SHA1(const char *pass, int passlen,
917     const unsigned char *salt, int saltlen, int iter, int keylen,
918     unsigned char *out);
919 int PKCS5_PBKDF2_HMAC(const char *pass, int passlen, const unsigned char *salt,
920     int saltlen, int iter, const EVP_MD *digest, int keylen,
921     unsigned char *out);
922 int PKCS5_v2_PBE_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
923     ASN1_TYPE *param, const EVP_CIPHER *cipher, const EVP_MD *md,
924     int en_de);
925 
926 void PKCS5_PBE_add(void);
927 
928 int EVP_PBE_CipherInit(ASN1_OBJECT *pbe_obj, const char *pass, int passlen,
929     ASN1_TYPE *param, EVP_CIPHER_CTX *ctx, int en_de);
930 
931 /* PBE type */
932 
933 /* Can appear as the outermost AlgorithmIdentifier */
934 #define EVP_PBE_TYPE_OUTER	0x0
935 /* Is an PRF type OID */
936 #define EVP_PBE_TYPE_PRF	0x1
937 
938 int EVP_PBE_alg_add_type(int pbe_type, int pbe_nid, int cipher_nid, int md_nid,
939     EVP_PBE_KEYGEN *keygen);
940 int EVP_PBE_alg_add(int nid, const EVP_CIPHER *cipher, const EVP_MD *md,
941     EVP_PBE_KEYGEN *keygen);
942 int EVP_PBE_find(int type, int pbe_nid, int *pcnid, int *pmnid,
943     EVP_PBE_KEYGEN **pkeygen);
944 void EVP_PBE_cleanup(void);
945 
946 #define ASN1_PKEY_ALIAS		0x1
947 #define ASN1_PKEY_DYNAMIC	0x2
948 #define ASN1_PKEY_SIGPARAM_NULL	0x4
949 
950 #define ASN1_PKEY_CTRL_PKCS7_SIGN	0x1
951 #define ASN1_PKEY_CTRL_PKCS7_ENCRYPT	0x2
952 #define ASN1_PKEY_CTRL_DEFAULT_MD_NID	0x3
953 #define ASN1_PKEY_CTRL_CMS_SIGN		0x5
954 #define ASN1_PKEY_CTRL_CMS_ENVELOPE	0x7
955 #define ASN1_PKEY_CTRL_CMS_RI_TYPE	0x8
956 
957 int EVP_PKEY_asn1_get_count(void);
958 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_get0(int idx);
959 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find(ENGINE **pe, int type);
960 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find_str(ENGINE **pe,
961     const char *str, int len);
962 int EVP_PKEY_asn1_add0(const EVP_PKEY_ASN1_METHOD *ameth);
963 int EVP_PKEY_asn1_add_alias(int to, int from);
964 int EVP_PKEY_asn1_get0_info(int *ppkey_id, int *pkey_base_id, int *ppkey_flags,
965     const char **pinfo, const char **ppem_str,
966     const EVP_PKEY_ASN1_METHOD *ameth);
967 
968 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_get0_asn1(const EVP_PKEY *pkey);
969 EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_new(int id, int flags, const char *pem_str,
970     const char *info);
971 void EVP_PKEY_asn1_copy(EVP_PKEY_ASN1_METHOD *dst,
972     const EVP_PKEY_ASN1_METHOD *src);
973 void EVP_PKEY_asn1_free(EVP_PKEY_ASN1_METHOD *ameth);
974 void EVP_PKEY_asn1_set_public(EVP_PKEY_ASN1_METHOD *ameth,
975     int (*pub_decode)(EVP_PKEY *pk, X509_PUBKEY *pub),
976     int (*pub_encode)(X509_PUBKEY *pub, const EVP_PKEY *pk),
977     int (*pub_cmp)(const EVP_PKEY *a, const EVP_PKEY *b),
978     int (*pub_print)(BIO *out, const EVP_PKEY *pkey, int indent,
979     ASN1_PCTX *pctx),
980     int (*pkey_size)(const EVP_PKEY *pk),
981     int (*pkey_bits)(const EVP_PKEY *pk));
982 void EVP_PKEY_asn1_set_private(EVP_PKEY_ASN1_METHOD *ameth,
983     int (*priv_decode)(EVP_PKEY *pk, const PKCS8_PRIV_KEY_INFO *p8inf),
984     int (*priv_encode)(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pk),
985     int (*priv_print)(BIO *out, const EVP_PKEY *pkey, int indent,
986     ASN1_PCTX *pctx));
987 void EVP_PKEY_asn1_set_param(EVP_PKEY_ASN1_METHOD *ameth,
988     int (*param_decode)(EVP_PKEY *pkey, const unsigned char **pder, int derlen),
989     int (*param_encode)(const EVP_PKEY *pkey, unsigned char **pder),
990     int (*param_missing)(const EVP_PKEY *pk),
991     int (*param_copy)(EVP_PKEY *to, const EVP_PKEY *from),
992     int (*param_cmp)(const EVP_PKEY *a, const EVP_PKEY *b),
993     int (*param_print)(BIO *out, const EVP_PKEY *pkey, int indent,
994     ASN1_PCTX *pctx));
995 
996 void EVP_PKEY_asn1_set_free(EVP_PKEY_ASN1_METHOD *ameth,
997     void (*pkey_free)(EVP_PKEY *pkey));
998 void EVP_PKEY_asn1_set_ctrl(EVP_PKEY_ASN1_METHOD *ameth,
999     int (*pkey_ctrl)(EVP_PKEY *pkey, int op, long arg1, void *arg2));
1000 void EVP_PKEY_asn1_set_security_bits(EVP_PKEY_ASN1_METHOD *ameth,
1001     int (*pkey_security_bits)(const EVP_PKEY *pkey));
1002 
1003 void EVP_PKEY_asn1_set_check(EVP_PKEY_ASN1_METHOD *ameth,
1004     int (*pkey_check)(const EVP_PKEY *pk));
1005 void EVP_PKEY_asn1_set_public_check(EVP_PKEY_ASN1_METHOD *ameth,
1006     int (*pkey_public_check)(const EVP_PKEY *pk));
1007 void EVP_PKEY_asn1_set_param_check(EVP_PKEY_ASN1_METHOD *ameth,
1008     int (*pkey_check)(const EVP_PKEY *pk));
1009 
1010 #define EVP_PKEY_OP_UNDEFINED		0
1011 #define EVP_PKEY_OP_PARAMGEN		(1<<1)
1012 #define EVP_PKEY_OP_KEYGEN		(1<<2)
1013 #define EVP_PKEY_OP_SIGN		(1<<3)
1014 #define EVP_PKEY_OP_VERIFY		(1<<4)
1015 #define EVP_PKEY_OP_VERIFYRECOVER	(1<<5)
1016 #define EVP_PKEY_OP_SIGNCTX		(1<<6)
1017 #define EVP_PKEY_OP_VERIFYCTX		(1<<7)
1018 #define EVP_PKEY_OP_ENCRYPT		(1<<8)
1019 #define EVP_PKEY_OP_DECRYPT		(1<<9)
1020 #define EVP_PKEY_OP_DERIVE		(1<<10)
1021 
1022 #define EVP_PKEY_OP_TYPE_SIG	\
1023 	(EVP_PKEY_OP_SIGN | EVP_PKEY_OP_VERIFY | EVP_PKEY_OP_VERIFYRECOVER \
1024 		| EVP_PKEY_OP_SIGNCTX | EVP_PKEY_OP_VERIFYCTX)
1025 
1026 #define EVP_PKEY_OP_TYPE_CRYPT \
1027 	(EVP_PKEY_OP_ENCRYPT | EVP_PKEY_OP_DECRYPT)
1028 
1029 #define EVP_PKEY_OP_TYPE_NOGEN \
1030 	(EVP_PKEY_OP_SIG | EVP_PKEY_OP_CRYPT | EVP_PKEY_OP_DERIVE)
1031 
1032 #define EVP_PKEY_OP_TYPE_GEN \
1033 		(EVP_PKEY_OP_PARAMGEN | EVP_PKEY_OP_KEYGEN)
1034 
1035 #define EVP_PKEY_CTX_set_signature_md(ctx, md) \
1036 		EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG, \
1037 		    EVP_PKEY_CTRL_MD, 0, (void *)md)
1038 
1039 #define EVP_PKEY_CTX_get_signature_md(ctx, pmd) \
1040 		EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG, \
1041 		    EVP_PKEY_CTRL_GET_MD, 0, (void *)(pmd))
1042 
1043 #define EVP_PKEY_CTRL_MD		1
1044 #define EVP_PKEY_CTRL_PEER_KEY		2
1045 
1046 #define EVP_PKEY_CTRL_PKCS7_ENCRYPT	3
1047 #define EVP_PKEY_CTRL_PKCS7_DECRYPT	4
1048 
1049 #define EVP_PKEY_CTRL_PKCS7_SIGN	5
1050 
1051 #define EVP_PKEY_CTRL_SET_MAC_KEY	6
1052 
1053 #define EVP_PKEY_CTRL_DIGESTINIT	7
1054 
1055 /* Used by GOST key encryption in TLS */
1056 #define EVP_PKEY_CTRL_SET_IV		8
1057 
1058 #define EVP_PKEY_CTRL_CMS_ENCRYPT	9
1059 #define EVP_PKEY_CTRL_CMS_DECRYPT	10
1060 #define EVP_PKEY_CTRL_CMS_SIGN		11
1061 
1062 #define EVP_PKEY_CTRL_CIPHER		12
1063 
1064 #define EVP_PKEY_CTRL_GET_MD		13
1065 
1066 #define EVP_PKEY_ALG_CTRL		0x1000
1067 
1068 
1069 #define EVP_PKEY_FLAG_AUTOARGLEN	2
1070 /* Method handles all operations: don't assume any digest related
1071  * defaults.
1072  */
1073 #define EVP_PKEY_FLAG_SIGCTX_CUSTOM	4
1074 
1075 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type);
1076 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags);
1077 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
1078     const EVP_PKEY_METHOD *meth);
1079 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src);
1080 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth);
1081 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth);
1082 
1083 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e);
1084 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e);
1085 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(EVP_PKEY_CTX *ctx);
1086 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx);
1087 
1088 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype, int cmd,
1089     int p1, void *p2);
1090 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx, const char *type,
1091     const char *value);
1092 
1093 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx);
1094 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen);
1095 
1096 EVP_PKEY *EVP_PKEY_new_mac_key(int type, ENGINE *e, const unsigned char *key,
1097     int keylen);
1098 EVP_PKEY *EVP_PKEY_new_CMAC_key(ENGINE *e, const unsigned char *priv,
1099     size_t len, const EVP_CIPHER *cipher);
1100 
1101 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data);
1102 void *EVP_PKEY_CTX_get_data(EVP_PKEY_CTX *ctx);
1103 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx);
1104 
1105 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx);
1106 
1107 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data);
1108 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx);
1109 
1110 int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx);
1111 int EVP_PKEY_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
1112     const unsigned char *tbs, size_t tbslen);
1113 int EVP_PKEY_verify_init(EVP_PKEY_CTX *ctx);
1114 int EVP_PKEY_verify(EVP_PKEY_CTX *ctx, const unsigned char *sig, size_t siglen,
1115     const unsigned char *tbs, size_t tbslen);
1116 int EVP_PKEY_verify_recover_init(EVP_PKEY_CTX *ctx);
1117 int EVP_PKEY_verify_recover(EVP_PKEY_CTX *ctx, unsigned char *rout,
1118     size_t *routlen, const unsigned char *sig, size_t siglen);
1119 int EVP_PKEY_encrypt_init(EVP_PKEY_CTX *ctx);
1120 int EVP_PKEY_encrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
1121     const unsigned char *in, size_t inlen);
1122 int EVP_PKEY_decrypt_init(EVP_PKEY_CTX *ctx);
1123 int EVP_PKEY_decrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
1124     const unsigned char *in, size_t inlen);
1125 
1126 int EVP_PKEY_derive_init(EVP_PKEY_CTX *ctx);
1127 int EVP_PKEY_derive_set_peer(EVP_PKEY_CTX *ctx, EVP_PKEY *peer);
1128 int EVP_PKEY_derive(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen);
1129 
1130 typedef int EVP_PKEY_gen_cb(EVP_PKEY_CTX *ctx);
1131 
1132 int EVP_PKEY_paramgen_init(EVP_PKEY_CTX *ctx);
1133 int EVP_PKEY_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY **ppkey);
1134 int EVP_PKEY_keygen_init(EVP_PKEY_CTX *ctx);
1135 int EVP_PKEY_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY **ppkey);
1136 int EVP_PKEY_check(EVP_PKEY_CTX *ctx);
1137 int EVP_PKEY_public_check(EVP_PKEY_CTX *ctx);
1138 int EVP_PKEY_param_check(EVP_PKEY_CTX *ctx);
1139 
1140 void EVP_PKEY_CTX_set_cb(EVP_PKEY_CTX *ctx, EVP_PKEY_gen_cb *cb);
1141 EVP_PKEY_gen_cb *EVP_PKEY_CTX_get_cb(EVP_PKEY_CTX *ctx);
1142 
1143 int EVP_PKEY_CTX_get_keygen_info(EVP_PKEY_CTX *ctx, int idx);
1144 
1145 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
1146     int (*init)(EVP_PKEY_CTX *ctx));
1147 
1148 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
1149     int (*copy)(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src));
1150 
1151 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
1152     void (*cleanup)(EVP_PKEY_CTX *ctx));
1153 
1154 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
1155     int (*paramgen_init)(EVP_PKEY_CTX *ctx),
1156     int (*paramgen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey));
1157 
1158 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
1159     int (*keygen_init)(EVP_PKEY_CTX *ctx),
1160     int (*keygen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey));
1161 
1162 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
1163     int (*sign_init)(EVP_PKEY_CTX *ctx),
1164     int (*sign)(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
1165     const unsigned char *tbs, size_t tbslen));
1166 
1167 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
1168     int (*verify_init)(EVP_PKEY_CTX *ctx),
1169     int (*verify)(EVP_PKEY_CTX *ctx, const unsigned char *sig, size_t siglen,
1170     const unsigned char *tbs, size_t tbslen));
1171 
1172 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
1173     int (*verify_recover_init)(EVP_PKEY_CTX *ctx),
1174     int (*verify_recover)(EVP_PKEY_CTX *ctx, unsigned char *sig,
1175     size_t *siglen, const unsigned char *tbs, size_t tbslen));
1176 
1177 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
1178     int (*signctx_init)(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx),
1179     int (*signctx)(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
1180     EVP_MD_CTX *mctx));
1181 
1182 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
1183     int (*verifyctx_init)(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx),
1184     int (*verifyctx)(EVP_PKEY_CTX *ctx, const unsigned char *sig, int siglen,
1185     EVP_MD_CTX *mctx));
1186 
1187 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
1188     int (*encrypt_init)(EVP_PKEY_CTX *ctx),
1189     int (*encryptfn)(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
1190     const unsigned char *in, size_t inlen));
1191 
1192 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
1193     int (*decrypt_init)(EVP_PKEY_CTX *ctx),
1194     int (*decrypt)(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
1195     const unsigned char *in, size_t inlen));
1196 
1197 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
1198     int (*derive_init)(EVP_PKEY_CTX *ctx),
1199     int (*derive)(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen));
1200 
1201 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
1202     int (*ctrl)(EVP_PKEY_CTX *ctx, int type, int p1, void *p2),
1203     int (*ctrl_str)(EVP_PKEY_CTX *ctx, const char *type, const char *value));
1204 
1205 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
1206     int (*check)(EVP_PKEY *pkey));
1207 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
1208     int (*public_check)(EVP_PKEY *pkey));
1209 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
1210     int (*param_check)(EVP_PKEY *pkey));
1211 
1212 /* Authenticated Encryption with Additional Data.
1213  *
1214  * AEAD couples confidentiality and integrity in a single primtive. AEAD
1215  * algorithms take a key and then can seal and open individual messages. Each
1216  * message has a unique, per-message nonce and, optionally, additional data
1217  * which is authenticated but not included in the output. */
1218 
1219 typedef struct evp_aead_st EVP_AEAD;
1220 
1221 #ifndef OPENSSL_NO_AES
1222 /* EVP_aes_128_gcm is AES-128 in Galois Counter Mode. */
1223 const EVP_AEAD *EVP_aead_aes_128_gcm(void);
1224 /* EVP_aes_256_gcm is AES-256 in Galois Counter Mode. */
1225 const EVP_AEAD *EVP_aead_aes_256_gcm(void);
1226 #endif
1227 
1228 #if !defined(OPENSSL_NO_CHACHA) && !defined(OPENSSL_NO_POLY1305)
1229 /* EVP_aead_chacha20_poly1305 is ChaCha20 with a Poly1305 authenticator. */
1230 const EVP_AEAD *EVP_aead_chacha20_poly1305(void);
1231 /* EVP_aead_xchacha20_poly1305 is XChaCha20 with a Poly1305 authenticator. */
1232 const EVP_AEAD *EVP_aead_xchacha20_poly1305(void);
1233 #endif
1234 
1235 /* EVP_AEAD_key_length returns the length of the keys used. */
1236 size_t EVP_AEAD_key_length(const EVP_AEAD *aead);
1237 
1238 /* EVP_AEAD_nonce_length returns the length of the per-message nonce. */
1239 size_t EVP_AEAD_nonce_length(const EVP_AEAD *aead);
1240 
1241 /* EVP_AEAD_max_overhead returns the maximum number of additional bytes added
1242  * by the act of sealing data with the AEAD. */
1243 size_t EVP_AEAD_max_overhead(const EVP_AEAD *aead);
1244 
1245 /* EVP_AEAD_max_tag_len returns the maximum tag length when using this AEAD.
1246  * This * is the largest value that can be passed as a tag length to
1247  * EVP_AEAD_CTX_init. */
1248 size_t EVP_AEAD_max_tag_len(const EVP_AEAD *aead);
1249 
1250 /* An EVP_AEAD_CTX represents an AEAD algorithm configured with a specific key
1251  * and message-independent IV. */
1252 typedef struct evp_aead_ctx_st EVP_AEAD_CTX;
1253 
1254 /* EVP_AEAD_MAX_TAG_LENGTH is the maximum tag length used by any AEAD
1255  * defined in this header. */
1256 #define EVP_AEAD_MAX_TAG_LENGTH 16
1257 
1258 /* EVP_AEAD_DEFAULT_TAG_LENGTH is a magic value that can be passed to
1259  * EVP_AEAD_CTX_init to indicate that the default tag length for an AEAD
1260  * should be used. */
1261 #define EVP_AEAD_DEFAULT_TAG_LENGTH 0
1262 
1263 /* EVP_AEAD_CTX_new allocates a new context for use with EVP_AEAD_CTX_init.
1264  * It can be cleaned up for reuse with EVP_AEAD_CTX_cleanup and must be freed
1265  * with EVP_AEAD_CTX_free. */
1266 EVP_AEAD_CTX *EVP_AEAD_CTX_new(void);
1267 
1268 /* EVP_AEAD_CTX_free releases all memory owned by the context. */
1269 void EVP_AEAD_CTX_free(EVP_AEAD_CTX *ctx);
1270 
1271 /* EVP_AEAD_CTX_init initializes the context for the given AEAD algorithm.
1272  * The implementation argument may be NULL to choose the default implementation.
1273  * Authentication tags may be truncated by passing a tag length. A tag length
1274  * of zero indicates the default tag length should be used. */
1275 int EVP_AEAD_CTX_init(EVP_AEAD_CTX *ctx, const EVP_AEAD *aead,
1276     const unsigned char *key, size_t key_len, size_t tag_len, ENGINE *impl);
1277 
1278 /* EVP_AEAD_CTX_cleanup frees any data allocated for this context. */
1279 void EVP_AEAD_CTX_cleanup(EVP_AEAD_CTX *ctx);
1280 
1281 /* EVP_AEAD_CTX_seal encrypts and authenticates the input and authenticates
1282  * any additional data (AD), the result being written as output. One is
1283  * returned on success, otherwise zero.
1284  *
1285  * This function may be called (with the same EVP_AEAD_CTX) concurrently with
1286  * itself or EVP_AEAD_CTX_open.
1287  *
1288  * At most max_out_len bytes are written as output and, in order to ensure
1289  * success, this value should be the length of the input plus the result of
1290  * EVP_AEAD_overhead. On successful return, out_len is set to the actual
1291  * number of bytes written.
1292  *
1293  * The length of the nonce is must be equal to the result of
1294  * EVP_AEAD_nonce_length for this AEAD.
1295  *
1296  * EVP_AEAD_CTX_seal never results in a partial output. If max_out_len is
1297  * insufficient, zero will be returned and out_len will be set to zero.
1298  *
1299  * If the input and output are aliased then out must be <= in. */
1300 int EVP_AEAD_CTX_seal(const EVP_AEAD_CTX *ctx, unsigned char *out,
1301     size_t *out_len, size_t max_out_len, const unsigned char *nonce,
1302     size_t nonce_len, const unsigned char *in, size_t in_len,
1303     const unsigned char *ad, size_t ad_len);
1304 
1305 /* EVP_AEAD_CTX_open authenticates the input and additional data, decrypting
1306  * the input and writing it as output. One is returned on success, otherwise
1307  * zero.
1308  *
1309  * This function may be called (with the same EVP_AEAD_CTX) concurrently with
1310  * itself or EVP_AEAD_CTX_seal.
1311  *
1312  * At most the number of input bytes are written as output. In order to ensure
1313  * success, max_out_len should be at least the same as the input length. On
1314  * successful return out_len is set to the actual number of bytes written.
1315  *
1316  * The length of nonce must be equal to the result of EVP_AEAD_nonce_length
1317  * for this AEAD.
1318  *
1319  * EVP_AEAD_CTX_open never results in a partial output. If max_out_len is
1320  * insufficient, zero will be returned and out_len will be set to zero.
1321  *
1322  * If the input and output are aliased then out must be <= in. */
1323 int EVP_AEAD_CTX_open(const EVP_AEAD_CTX *ctx, unsigned char *out,
1324     size_t *out_len, size_t max_out_len, const unsigned char *nonce,
1325     size_t nonce_len, const unsigned char *in, size_t in_len,
1326     const unsigned char *ad, size_t ad_len);
1327 
1328 void ERR_load_EVP_strings(void);
1329 
1330 /* Error codes for the EVP functions. */
1331 
1332 /* Function codes. */
1333 #define EVP_F_AEAD_AES_GCM_INIT				 187
1334 #define EVP_F_AEAD_AES_GCM_OPEN				 188
1335 #define EVP_F_AEAD_AES_GCM_SEAL				 189
1336 #define EVP_F_AEAD_CHACHA20_POLY1305_INIT		 192
1337 #define EVP_F_AEAD_CHACHA20_POLY1305_OPEN		 193
1338 #define EVP_F_AEAD_CHACHA20_POLY1305_SEAL		 194
1339 #define EVP_F_AEAD_CTX_OPEN				 185
1340 #define EVP_F_AEAD_CTX_SEAL				 186
1341 #define EVP_F_AESNI_INIT_KEY				 165
1342 #define EVP_F_AESNI_XTS_CIPHER				 176
1343 #define EVP_F_AES_INIT_KEY				 133
1344 #define EVP_F_AES_XTS					 172
1345 #define EVP_F_AES_XTS_CIPHER				 175
1346 #define EVP_F_ALG_MODULE_INIT				 177
1347 #define EVP_F_CAMELLIA_INIT_KEY				 159
1348 #define EVP_F_CMAC_INIT					 173
1349 #define EVP_F_D2I_PKEY					 100
1350 #define EVP_F_DO_SIGVER_INIT				 161
1351 #define EVP_F_DSAPKEY2PKCS8				 134
1352 #define EVP_F_DSA_PKEY2PKCS8				 135
1353 #define EVP_F_ECDSA_PKEY2PKCS8				 129
1354 #define EVP_F_ECKEY_PKEY2PKCS8				 132
1355 #define EVP_F_EVP_AEAD_CTX_INIT				 180
1356 #define EVP_F_EVP_AEAD_CTX_OPEN				 190
1357 #define EVP_F_EVP_AEAD_CTX_SEAL				 191
1358 #define EVP_F_EVP_BYTESTOKEY				 200
1359 #define EVP_F_EVP_CIPHERINIT_EX				 123
1360 #define EVP_F_EVP_CIPHER_CTX_COPY			 163
1361 #define EVP_F_EVP_CIPHER_CTX_CTRL			 124
1362 #define EVP_F_EVP_CIPHER_CTX_SET_KEY_LENGTH		 122
1363 #define EVP_F_EVP_CIPHER_GET_ASN1_IV			 201
1364 #define EVP_F_EVP_CIPHER_SET_ASN1_IV			 202
1365 #define EVP_F_EVP_DECRYPTFINAL_EX			 101
1366 #define EVP_F_EVP_DECRYPTUPDATE				 199
1367 #define EVP_F_EVP_DIGESTFINAL_EX			 196
1368 #define EVP_F_EVP_DIGESTINIT_EX				 128
1369 #define EVP_F_EVP_ENCRYPTFINAL_EX			 127
1370 #define EVP_F_EVP_ENCRYPTUPDATE				 198
1371 #define EVP_F_EVP_MD_CTX_COPY_EX			 110
1372 #define EVP_F_EVP_MD_CTX_CTRL				 195
1373 #define EVP_F_EVP_MD_SIZE				 162
1374 #define EVP_F_EVP_OPENINIT				 102
1375 #define EVP_F_EVP_PBE_ALG_ADD				 115
1376 #define EVP_F_EVP_PBE_ALG_ADD_TYPE			 160
1377 #define EVP_F_EVP_PBE_CIPHERINIT			 116
1378 #define EVP_F_EVP_PKCS82PKEY				 111
1379 #define EVP_F_EVP_PKCS82PKEY_BROKEN			 136
1380 #define EVP_F_EVP_PKEY2PKCS8_BROKEN			 113
1381 #define EVP_F_EVP_PKEY_COPY_PARAMETERS			 103
1382 #define EVP_F_EVP_PKEY_CTX_CTRL				 137
1383 #define EVP_F_EVP_PKEY_CTX_CTRL_STR			 150
1384 #define EVP_F_EVP_PKEY_CTX_DUP				 156
1385 #define EVP_F_EVP_PKEY_DECRYPT				 104
1386 #define EVP_F_EVP_PKEY_DECRYPT_INIT			 138
1387 #define EVP_F_EVP_PKEY_DECRYPT_OLD			 151
1388 #define EVP_F_EVP_PKEY_DERIVE				 153
1389 #define EVP_F_EVP_PKEY_DERIVE_INIT			 154
1390 #define EVP_F_EVP_PKEY_DERIVE_SET_PEER			 155
1391 #define EVP_F_EVP_PKEY_ENCRYPT				 105
1392 #define EVP_F_EVP_PKEY_ENCRYPT_INIT			 139
1393 #define EVP_F_EVP_PKEY_ENCRYPT_OLD			 152
1394 #define EVP_F_EVP_PKEY_GET1_DH				 119
1395 #define EVP_F_EVP_PKEY_GET1_DSA				 120
1396 #define EVP_F_EVP_PKEY_GET1_ECDSA			 130
1397 #define EVP_F_EVP_PKEY_GET1_EC_KEY			 131
1398 #define EVP_F_EVP_PKEY_GET1_RSA				 121
1399 #define EVP_F_EVP_PKEY_KEYGEN				 146
1400 #define EVP_F_EVP_PKEY_KEYGEN_INIT			 147
1401 #define EVP_F_EVP_PKEY_NEW				 106
1402 #define EVP_F_EVP_PKEY_PARAMGEN				 148
1403 #define EVP_F_EVP_PKEY_PARAMGEN_INIT			 149
1404 #define EVP_F_EVP_PKEY_SIGN				 140
1405 #define EVP_F_EVP_PKEY_SIGN_INIT			 141
1406 #define EVP_F_EVP_PKEY_VERIFY				 142
1407 #define EVP_F_EVP_PKEY_VERIFY_INIT			 143
1408 #define EVP_F_EVP_PKEY_VERIFY_RECOVER			 144
1409 #define EVP_F_EVP_PKEY_VERIFY_RECOVER_INIT		 145
1410 #define EVP_F_EVP_RIJNDAEL				 126
1411 #define EVP_F_EVP_SIGNFINAL				 107
1412 #define EVP_F_EVP_VERIFYFINAL				 108
1413 #define EVP_F_FIPS_CIPHERINIT				 166
1414 #define EVP_F_FIPS_CIPHER_CTX_COPY			 170
1415 #define EVP_F_FIPS_CIPHER_CTX_CTRL			 167
1416 #define EVP_F_FIPS_CIPHER_CTX_SET_KEY_LENGTH		 171
1417 #define EVP_F_FIPS_DIGESTINIT				 168
1418 #define EVP_F_FIPS_MD_CTX_COPY				 169
1419 #define EVP_F_HMAC_INIT_EX				 174
1420 #define EVP_F_INT_CTX_NEW				 157
1421 #define EVP_F_PKCS5_PBE_KEYIVGEN			 117
1422 #define EVP_F_PKCS5_V2_PBE_KEYIVGEN			 118
1423 #define EVP_F_PKCS5_V2_PBKDF2_KEYIVGEN			 164
1424 #define EVP_F_PKCS8_SET_BROKEN				 112
1425 #define EVP_F_PKEY_SET_TYPE				 158
1426 #define EVP_F_RC2_GET_ASN1_TYPE_AND_IV			 197
1427 #define EVP_F_RC2_MAGIC_TO_METH				 109
1428 #define EVP_F_RC5_CTRL					 125
1429 
1430 /* Reason codes. */
1431 #define EVP_R_AES_IV_SETUP_FAILED			 162
1432 #define EVP_R_AES_KEY_SETUP_FAILED			 143
1433 #define EVP_R_ASN1_LIB					 140
1434 #define EVP_R_BAD_BLOCK_LENGTH				 136
1435 #define EVP_R_BAD_DECRYPT				 100
1436 #define EVP_R_BAD_KEY_LENGTH				 137
1437 #define EVP_R_BN_DECODE_ERROR				 112
1438 #define EVP_R_BN_PUBKEY_ERROR				 113
1439 #define EVP_R_BUFFER_TOO_SMALL				 155
1440 #define EVP_R_CAMELLIA_KEY_SETUP_FAILED			 157
1441 #define EVP_R_CIPHER_PARAMETER_ERROR			 122
1442 #define EVP_R_COMMAND_NOT_SUPPORTED			 147
1443 #define EVP_R_CTRL_NOT_IMPLEMENTED			 132
1444 #define EVP_R_CTRL_OPERATION_NOT_IMPLEMENTED		 133
1445 #define EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH		 138
1446 #define EVP_R_DECODE_ERROR				 114
1447 #define EVP_R_DIFFERENT_KEY_TYPES			 101
1448 #define EVP_R_DIFFERENT_PARAMETERS			 153
1449 #define EVP_R_DISABLED_FOR_FIPS				 163
1450 #define EVP_R_ENCODE_ERROR				 115
1451 #define EVP_R_ERROR_LOADING_SECTION			 165
1452 #define EVP_R_ERROR_SETTING_FIPS_MODE			 166
1453 #define EVP_R_EVP_PBE_CIPHERINIT_ERROR			 119
1454 #define EVP_R_EXPECTING_AN_HMAC_KEY			 174
1455 #define EVP_R_EXPECTING_AN_RSA_KEY			 127
1456 #define EVP_R_EXPECTING_A_DH_KEY			 128
1457 #define EVP_R_EXPECTING_A_DSA_KEY			 129
1458 #define EVP_R_EXPECTING_A_ECDSA_KEY			 141
1459 #define EVP_R_EXPECTING_A_EC_KEY			 142
1460 #define EVP_R_FIPS_MODE_NOT_SUPPORTED			 167
1461 #define EVP_R_GET_RAW_KEY_FAILED			 182
1462 #define EVP_R_INITIALIZATION_ERROR			 134
1463 #define EVP_R_INPUT_NOT_INITIALIZED			 111
1464 #define EVP_R_INVALID_DIGEST				 152
1465 #define EVP_R_INVALID_FIPS_MODE				 168
1466 #define EVP_R_INVALID_IV_LENGTH				 194
1467 #define EVP_R_INVALID_KEY_LENGTH			 130
1468 #define EVP_R_INVALID_OPERATION				 148
1469 #define EVP_R_IV_TOO_LARGE				 102
1470 #define EVP_R_KEYGEN_FAILURE				 120
1471 #define EVP_R_KEY_SETUP_FAILED				 180
1472 #define EVP_R_MESSAGE_DIGEST_IS_NULL			 159
1473 #define EVP_R_METHOD_NOT_SUPPORTED			 144
1474 #define EVP_R_MISSING_PARAMETERS			 103
1475 #define EVP_R_NO_CIPHER_SET				 131
1476 #define EVP_R_NO_DEFAULT_DIGEST				 158
1477 #define EVP_R_NO_DIGEST_SET				 139
1478 #define EVP_R_NO_DSA_PARAMETERS				 116
1479 #define EVP_R_NO_KEY_SET				 154
1480 #define EVP_R_NO_OPERATION_SET				 149
1481 #define EVP_R_NO_SIGN_FUNCTION_CONFIGURED		 104
1482 #define EVP_R_NO_VERIFY_FUNCTION_CONFIGURED		 105
1483 #define EVP_R_ONLY_ONESHOT_SUPPORTED			 177
1484 #define EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE	 150
1485 #define EVP_R_OPERATON_NOT_INITIALIZED			 151
1486 #define EVP_R_OUTPUT_ALIASES_INPUT			 172
1487 #define EVP_R_PKCS8_UNKNOWN_BROKEN_TYPE			 117
1488 #define EVP_R_PRIVATE_KEY_DECODE_ERROR			 145
1489 #define EVP_R_PRIVATE_KEY_ENCODE_ERROR			 146
1490 #define EVP_R_PUBLIC_KEY_NOT_RSA			 106
1491 #define EVP_R_TAG_TOO_LARGE				 171
1492 #define EVP_R_TOO_LARGE					 164
1493 #define EVP_R_UNKNOWN_CIPHER				 160
1494 #define EVP_R_UNKNOWN_DIGEST				 161
1495 #define EVP_R_UNKNOWN_OPTION				 169
1496 #define EVP_R_UNKNOWN_PBE_ALGORITHM			 121
1497 #define EVP_R_UNSUPORTED_NUMBER_OF_ROUNDS		 135
1498 #define EVP_R_UNSUPPORTED_ALGORITHM			 156
1499 #define EVP_R_UNSUPPORTED_CIPHER			 107
1500 #define EVP_R_UNSUPPORTED_KEYLENGTH			 123
1501 #define EVP_R_UNSUPPORTED_KEY_DERIVATION_FUNCTION	 124
1502 #define EVP_R_UNSUPPORTED_KEY_SIZE			 108
1503 #define EVP_R_UNSUPPORTED_PRF				 125
1504 #define EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM		 118
1505 #define EVP_R_WRAP_MODE_NOT_ALLOWED			 170
1506 #define EVP_R_UNSUPPORTED_SALT_TYPE			 126
1507 #define EVP_R_WRONG_FINAL_BLOCK_LENGTH			 109
1508 #define EVP_R_WRONG_PUBLIC_KEY_TYPE			 110
1509 
1510 #ifdef  __cplusplus
1511 }
1512 #endif
1513 #endif
1514