1 /* $OpenBSD: evp.h,v 1.107 2022/09/11 17:29:24 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 
119 #ifdef	__cplusplus
120 extern "C" {
121 #endif
122 
123 #define EVP_PKEY_MO_SIGN	0x0001
124 #define EVP_PKEY_MO_VERIFY	0x0002
125 #define EVP_PKEY_MO_ENCRYPT	0x0004
126 #define EVP_PKEY_MO_DECRYPT	0x0008
127 
128 #ifndef EVP_MD
129 #define EVP_MD_FLAG_ONESHOT	0x0001 /* digest can only handle a single
130 					* block */
131 
132 /* DigestAlgorithmIdentifier flags... */
133 
134 #define EVP_MD_FLAG_DIGALGID_MASK		0x0018
135 
136 /* NULL or absent parameter accepted. Use NULL */
137 
138 #define EVP_MD_FLAG_DIGALGID_NULL		0x0000
139 
140 /* NULL or absent parameter accepted. Use NULL for PKCS#1 otherwise absent */
141 
142 #define EVP_MD_FLAG_DIGALGID_ABSENT		0x0008
143 
144 /* Custom handling via ctrl */
145 
146 #define EVP_MD_FLAG_DIGALGID_CUSTOM		0x0018
147 
148 #define EVP_MD_FLAG_FIPS	0x0400 /* Note if suitable for use in FIPS mode */
149 
150 /* Digest ctrls */
151 
152 #define	EVP_MD_CTRL_DIGALGID			0x1
153 #define	EVP_MD_CTRL_MICALG			0x2
154 #define	EVP_MD_CTRL_SET_KEY			0x3
155 #define	EVP_MD_CTRL_GOST_SET_SBOX		0x4
156 
157 /* Minimum Algorithm specific ctrl value */
158 
159 #define	EVP_MD_CTRL_ALG_CTRL			0x1000
160 
161 #endif /* !EVP_MD */
162 
163 /* values for EVP_MD_CTX flags */
164 
165 #define EVP_MD_CTX_FLAG_ONESHOT		0x0001 /* digest update will be called
166 						* once only */
167 #define EVP_MD_CTX_FLAG_CLEANED		0x0002 /* context has already been
168 						* cleaned */
169 #define EVP_MD_CTX_FLAG_REUSE		0x0004 /* Don't free up ctx->md_data
170 						* in EVP_MD_CTX_cleanup */
171 /* FIPS and pad options are ignored in 1.0.0, definitions are here
172  * so we don't accidentally reuse the values for other purposes.
173  */
174 
175 #define EVP_MD_CTX_FLAG_NON_FIPS_ALLOW	0x0008	/* Allow use of non FIPS digest
176 						 * in FIPS mode */
177 
178 /* The following PAD options are also currently ignored in 1.0.0, digest
179  * parameters are handled through EVP_DigestSign*() and EVP_DigestVerify*()
180  * instead.
181  */
182 #define EVP_MD_CTX_FLAG_PAD_MASK	0xF0	/* RSA mode to use */
183 #define EVP_MD_CTX_FLAG_PAD_PKCS1	0x00	/* PKCS#1 v1.5 mode */
184 #define EVP_MD_CTX_FLAG_PAD_X931	0x10	/* X9.31 mode */
185 #define EVP_MD_CTX_FLAG_PAD_PSS		0x20	/* PSS mode */
186 
187 #define EVP_MD_CTX_FLAG_NO_INIT		0x0100 /* Don't initialize md_data */
188 
189 /* Values for cipher flags */
190 
191 /* Modes for ciphers */
192 
193 #define		EVP_CIPH_STREAM_CIPHER		0x0
194 #define		EVP_CIPH_ECB_MODE		0x1
195 #define		EVP_CIPH_CBC_MODE		0x2
196 #define		EVP_CIPH_CFB_MODE		0x3
197 #define		EVP_CIPH_OFB_MODE		0x4
198 #define		EVP_CIPH_CTR_MODE		0x5
199 #define		EVP_CIPH_GCM_MODE		0x6
200 #define		EVP_CIPH_CCM_MODE		0x7
201 #define		EVP_CIPH_XTS_MODE		0x10001
202 #define		EVP_CIPH_WRAP_MODE		0x10002
203 #define		EVP_CIPH_MODE			0xF0007
204 /* Set if variable length cipher */
205 #define		EVP_CIPH_VARIABLE_LENGTH	0x8
206 /* Set if the iv handling should be done by the cipher itself */
207 #define		EVP_CIPH_CUSTOM_IV		0x10
208 /* Set if the cipher's init() function should be called if key is NULL */
209 #define		EVP_CIPH_ALWAYS_CALL_INIT	0x20
210 /* Call ctrl() to init cipher parameters */
211 #define		EVP_CIPH_CTRL_INIT		0x40
212 /* Don't use standard key length function */
213 #define		EVP_CIPH_CUSTOM_KEY_LENGTH	0x80
214 /* Don't use standard block padding */
215 #define		EVP_CIPH_NO_PADDING		0x100
216 /* cipher handles random key generation */
217 #define		EVP_CIPH_RAND_KEY		0x200
218 /* cipher has its own additional copying logic */
219 #define		EVP_CIPH_CUSTOM_COPY		0x400
220 /* Allow use default ASN1 get/set iv */
221 #define		EVP_CIPH_FLAG_DEFAULT_ASN1	0x1000
222 /* Buffer length in bits not bytes: CFB1 mode only */
223 #define		EVP_CIPH_FLAG_LENGTH_BITS	0x2000
224 /* Note if suitable for use in FIPS mode */
225 #define		EVP_CIPH_FLAG_FIPS		0x4000
226 /* Allow non FIPS cipher in FIPS mode */
227 #define		EVP_CIPH_FLAG_NON_FIPS_ALLOW	0x8000
228 /* Cipher handles any and all padding logic as well
229  * as finalisation.
230  */
231 #define		EVP_CIPH_FLAG_CUSTOM_CIPHER	0x100000
232 #define		EVP_CIPH_FLAG_AEAD_CIPHER	0x200000
233 
234 /*
235  * Cipher context flag to indicate that we can handle wrap mode: if allowed in
236  * older applications, it could overflow buffers.
237  */
238 #define		EVP_CIPHER_CTX_FLAG_WRAP_ALLOW	0x1
239 
240 /* ctrl() values */
241 
242 #define		EVP_CTRL_INIT			0x0
243 #define		EVP_CTRL_SET_KEY_LENGTH		0x1
244 #define		EVP_CTRL_GET_RC2_KEY_BITS	0x2
245 #define		EVP_CTRL_SET_RC2_KEY_BITS	0x3
246 #define		EVP_CTRL_GET_RC5_ROUNDS		0x4
247 #define		EVP_CTRL_SET_RC5_ROUNDS		0x5
248 #define		EVP_CTRL_RAND_KEY		0x6
249 #define		EVP_CTRL_PBE_PRF_NID		0x7
250 #define		EVP_CTRL_COPY			0x8
251 #define		EVP_CTRL_AEAD_SET_IVLEN		0x9
252 #define		EVP_CTRL_AEAD_GET_TAG		0x10
253 #define		EVP_CTRL_AEAD_SET_TAG		0x11
254 #define		EVP_CTRL_AEAD_SET_IV_FIXED	0x12
255 #define		EVP_CTRL_GCM_SET_IVLEN		EVP_CTRL_AEAD_SET_IVLEN
256 #define		EVP_CTRL_GCM_GET_TAG		EVP_CTRL_AEAD_GET_TAG
257 #define		EVP_CTRL_GCM_SET_TAG		EVP_CTRL_AEAD_SET_TAG
258 #define		EVP_CTRL_GCM_SET_IV_FIXED	EVP_CTRL_AEAD_SET_IV_FIXED
259 #define		EVP_CTRL_GCM_IV_GEN		0x13
260 #define		EVP_CTRL_CCM_SET_IVLEN		EVP_CTRL_AEAD_SET_IVLEN
261 #define		EVP_CTRL_CCM_GET_TAG		EVP_CTRL_AEAD_GET_TAG
262 #define		EVP_CTRL_CCM_SET_TAG		EVP_CTRL_AEAD_SET_TAG
263 #define		EVP_CTRL_CCM_SET_L		0x14
264 #define		EVP_CTRL_CCM_SET_MSGLEN		0x15
265 /* AEAD cipher deduces payload length and returns number of bytes
266  * required to store MAC and eventual padding. Subsequent call to
267  * EVP_Cipher even appends/verifies MAC.
268  */
269 #define		EVP_CTRL_AEAD_TLS1_AAD		0x16
270 /* Used by composite AEAD ciphers, no-op in GCM, CCM... */
271 #define		EVP_CTRL_AEAD_SET_MAC_KEY	0x17
272 /* Set the GCM invocation field, decrypt only */
273 #define		EVP_CTRL_GCM_SET_IV_INV		0x18
274 /* Set the S-BOX NID for GOST ciphers */
275 #define		EVP_CTRL_GOST_SET_SBOX		0x19
276 
277 /* GCM TLS constants */
278 /* Length of fixed part of IV derived from PRF */
279 #define EVP_GCM_TLS_FIXED_IV_LEN			4
280 /* Length of explicit part of IV part of TLS records */
281 #define EVP_GCM_TLS_EXPLICIT_IV_LEN			8
282 /* Length of tag for TLS */
283 #define EVP_GCM_TLS_TAG_LEN				16
284 
285 /* CCM TLS constants */
286 /* Length of fixed part of IV derived from PRF */
287 #define EVP_CCM_TLS_FIXED_IV_LEN			4
288 /* Length of explicit part of IV part of TLS records */
289 #define EVP_CCM_TLS_EXPLICIT_IV_LEN			8
290 /* Total length of CCM IV length for TLS */
291 #define EVP_CCM_TLS_IV_LEN				12
292 /* Length of tag for TLS */
293 #define EVP_CCM_TLS_TAG_LEN				16
294 /* Length of CCM8 tag for TLS */
295 #define EVP_CCM8_TLS_TAG_LEN				8
296 
297 /* Length of tag for TLS */
298 #define EVP_CHACHAPOLY_TLS_TAG_LEN			16
299 
300 typedef struct evp_cipher_info_st {
301 	const EVP_CIPHER *cipher;
302 	unsigned char iv[EVP_MAX_IV_LENGTH];
303 } EVP_CIPHER_INFO;
304 
305 /* Password based encryption function */
306 typedef int (EVP_PBE_KEYGEN)(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
307     ASN1_TYPE *param, const EVP_CIPHER *cipher, const EVP_MD *md, int en_de);
308 
309 #ifndef OPENSSL_NO_RSA
310 #define EVP_PKEY_assign_RSA(pkey,rsa) EVP_PKEY_assign((pkey),EVP_PKEY_RSA,\
311 					(char *)(rsa))
312 #endif
313 
314 #ifndef OPENSSL_NO_DSA
315 #define EVP_PKEY_assign_DSA(pkey,dsa) EVP_PKEY_assign((pkey),EVP_PKEY_DSA,\
316 					(char *)(dsa))
317 #endif
318 
319 #ifndef OPENSSL_NO_DH
320 #define EVP_PKEY_assign_DH(pkey,dh) EVP_PKEY_assign((pkey),EVP_PKEY_DH,\
321 					(char *)(dh))
322 #endif
323 
324 #ifndef OPENSSL_NO_EC
325 #define EVP_PKEY_assign_EC_KEY(pkey,eckey) EVP_PKEY_assign((pkey),EVP_PKEY_EC,\
326                                         (char *)(eckey))
327 #endif
328 
329 #ifndef OPENSSL_NO_GOST
330 #define EVP_PKEY_assign_GOST(pkey,gostkey) EVP_PKEY_assign((pkey),EVP_PKEY_GOSTR01,\
331                                         (char *)(gostkey))
332 #endif
333 
334 /* Add some extra combinations */
335 #define EVP_get_digestbynid(a) EVP_get_digestbyname(OBJ_nid2sn(a))
336 #define EVP_get_digestbyobj(a) EVP_get_digestbynid(OBJ_obj2nid(a))
337 #define EVP_get_cipherbynid(a) EVP_get_cipherbyname(OBJ_nid2sn(a))
338 #define EVP_get_cipherbyobj(a) EVP_get_cipherbynid(OBJ_obj2nid(a))
339 
340 int EVP_MD_type(const EVP_MD *md);
341 #define EVP_MD_nid(e)			EVP_MD_type(e)
342 #define EVP_MD_name(e)			OBJ_nid2sn(EVP_MD_nid(e))
343 int EVP_MD_pkey_type(const EVP_MD *md);
344 int EVP_MD_size(const EVP_MD *md);
345 int EVP_MD_block_size(const EVP_MD *md);
346 unsigned long EVP_MD_flags(const EVP_MD *md);
347 
348 EVP_MD *EVP_MD_meth_new(int md_type, int pkey_type);
349 void EVP_MD_meth_free(EVP_MD *md);
350 EVP_MD *EVP_MD_meth_dup(const EVP_MD *md);
351 int EVP_MD_meth_set_input_blocksize(EVP_MD *md, int blocksize);
352 int EVP_MD_meth_set_result_size(EVP_MD *md, int resultsize);
353 int EVP_MD_meth_set_app_datasize(EVP_MD *md, int datasize);
354 int EVP_MD_meth_set_flags(EVP_MD *md, unsigned long flags);
355 int EVP_MD_meth_set_init(EVP_MD *md, int (*init)(EVP_MD_CTX *ctx));
356 int EVP_MD_meth_set_update(EVP_MD *md,
357     int (*update)(EVP_MD_CTX *ctx, const void *data, size_t count));
358 int EVP_MD_meth_set_final(EVP_MD *md,
359     int (*final)(EVP_MD_CTX *ctx, unsigned char *md));
360 int EVP_MD_meth_set_copy(EVP_MD *md,
361     int (*copy)(EVP_MD_CTX *to, const EVP_MD_CTX *from));
362 int EVP_MD_meth_set_cleanup(EVP_MD *md, int (*cleanup)(EVP_MD_CTX *ctx));
363 int EVP_MD_meth_set_ctrl(EVP_MD *md,
364     int (*ctrl)(EVP_MD_CTX *ctx, int cmd, int p1, void *p2));
365 
366 const EVP_MD *EVP_MD_CTX_md(const EVP_MD_CTX *ctx);
367 void *EVP_MD_CTX_md_data(const EVP_MD_CTX *ctx);
368 EVP_PKEY_CTX *EVP_MD_CTX_pkey_ctx(const EVP_MD_CTX *ctx);
369 void EVP_MD_CTX_set_pkey_ctx(EVP_MD_CTX *ctx, EVP_PKEY_CTX *pctx);
370 #define EVP_MD_CTX_size(e)		EVP_MD_size(EVP_MD_CTX_md(e))
371 #define EVP_MD_CTX_block_size(e)	EVP_MD_block_size(EVP_MD_CTX_md(e))
372 #define EVP_MD_CTX_type(e)		EVP_MD_type(EVP_MD_CTX_md(e))
373 
374 int EVP_CIPHER_nid(const EVP_CIPHER *cipher);
375 #define EVP_CIPHER_name(e)		OBJ_nid2sn(EVP_CIPHER_nid(e))
376 int EVP_CIPHER_block_size(const EVP_CIPHER *cipher);
377 int EVP_CIPHER_key_length(const EVP_CIPHER *cipher);
378 int EVP_CIPHER_iv_length(const EVP_CIPHER *cipher);
379 unsigned long EVP_CIPHER_flags(const EVP_CIPHER *cipher);
380 #define EVP_CIPHER_mode(e)		(EVP_CIPHER_flags(e) & EVP_CIPH_MODE)
381 
382 const EVP_CIPHER * EVP_CIPHER_CTX_cipher(const EVP_CIPHER_CTX *ctx);
383 int EVP_CIPHER_CTX_encrypting(const EVP_CIPHER_CTX *ctx);
384 int EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX *ctx);
385 int EVP_CIPHER_CTX_block_size(const EVP_CIPHER_CTX *ctx);
386 int EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx);
387 int EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX *ctx);
388 int EVP_CIPHER_CTX_get_iv(const EVP_CIPHER_CTX *ctx,
389     unsigned char *iv, size_t len);
390 int EVP_CIPHER_CTX_set_iv(EVP_CIPHER_CTX *ctx,
391     const unsigned char *iv, size_t len);
392 int EVP_CIPHER_CTX_copy(EVP_CIPHER_CTX *out, const EVP_CIPHER_CTX *in);
393 void *EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX *ctx);
394 void EVP_CIPHER_CTX_set_app_data(EVP_CIPHER_CTX *ctx, void *data);
395 void *EVP_CIPHER_CTX_get_cipher_data(const EVP_CIPHER_CTX *ctx);
396 void *EVP_CIPHER_CTX_set_cipher_data(EVP_CIPHER_CTX *ctx, void *cipher_data);
397 unsigned char *EVP_CIPHER_CTX_buf_noconst(EVP_CIPHER_CTX *ctx);
398 #define EVP_CIPHER_CTX_type(c)         EVP_CIPHER_type(EVP_CIPHER_CTX_cipher(c))
399 unsigned long EVP_CIPHER_CTX_flags(const EVP_CIPHER_CTX *ctx);
400 #define EVP_CIPHER_CTX_mode(e)		(EVP_CIPHER_CTX_flags(e) & EVP_CIPH_MODE)
401 
402 #define EVP_ENCODE_LENGTH(l)	(((l+2)/3*4)+(l/48+1)*2+80)
403 #define EVP_DECODE_LENGTH(l)	((l+3)/4*3+80)
404 
405 #define EVP_SignInit_ex(a,b,c)		EVP_DigestInit_ex(a,b,c)
406 #define EVP_SignInit(a,b)		EVP_DigestInit(a,b)
407 #define EVP_SignUpdate(a,b,c)		EVP_DigestUpdate(a,b,c)
408 #define	EVP_VerifyInit_ex(a,b,c)	EVP_DigestInit_ex(a,b,c)
409 #define	EVP_VerifyInit(a,b)		EVP_DigestInit(a,b)
410 #define	EVP_VerifyUpdate(a,b,c)		EVP_DigestUpdate(a,b,c)
411 #define EVP_OpenUpdate(a,b,c,d,e)	EVP_DecryptUpdate(a,b,c,d,e)
412 #define EVP_SealUpdate(a,b,c,d,e)	EVP_EncryptUpdate(a,b,c,d,e)
413 #define EVP_DigestSignUpdate(a,b,c)	EVP_DigestUpdate(a,b,c)
414 #define EVP_DigestVerifyUpdate(a,b,c)	EVP_DigestUpdate(a,b,c)
415 
416 #define BIO_set_md(b,md)		BIO_ctrl(b,BIO_C_SET_MD,0,(char *)md)
417 #define BIO_get_md(b,mdp)		BIO_ctrl(b,BIO_C_GET_MD,0,(char *)mdp)
418 #define BIO_get_md_ctx(b,mdcp)     BIO_ctrl(b,BIO_C_GET_MD_CTX,0,(char *)mdcp)
419 #define BIO_set_md_ctx(b,mdcp)     BIO_ctrl(b,BIO_C_SET_MD_CTX,0,(char *)mdcp)
420 #define BIO_get_cipher_status(b)	BIO_ctrl(b,BIO_C_GET_CIPHER_STATUS,0,NULL)
421 #define BIO_get_cipher_ctx(b,c_pp)	BIO_ctrl(b,BIO_C_GET_CIPHER_CTX,0,(char *)c_pp)
422 
423 int EVP_Cipher(EVP_CIPHER_CTX *c, unsigned char *out, const unsigned char *in,
424     unsigned int inl);
425 
426 #define EVP_add_cipher_alias(n,alias) \
427 	OBJ_NAME_add((alias),OBJ_NAME_TYPE_CIPHER_METH|OBJ_NAME_ALIAS,(n))
428 #define EVP_add_digest_alias(n,alias) \
429 	OBJ_NAME_add((alias),OBJ_NAME_TYPE_MD_METH|OBJ_NAME_ALIAS,(n))
430 #define EVP_delete_cipher_alias(alias) \
431 	OBJ_NAME_remove(alias,OBJ_NAME_TYPE_CIPHER_METH|OBJ_NAME_ALIAS);
432 #define EVP_delete_digest_alias(alias) \
433 	OBJ_NAME_remove(alias,OBJ_NAME_TYPE_MD_METH|OBJ_NAME_ALIAS);
434 
435 EVP_MD_CTX *EVP_MD_CTX_new(void);
436 void EVP_MD_CTX_free(EVP_MD_CTX *ctx);
437 void EVP_MD_CTX_init(EVP_MD_CTX *ctx);
438 int EVP_MD_CTX_reset(EVP_MD_CTX *ctx);
439 EVP_MD_CTX *EVP_MD_CTX_create(void);
440 void EVP_MD_CTX_destroy(EVP_MD_CTX *ctx);
441 int EVP_MD_CTX_cleanup(EVP_MD_CTX *ctx);
442 int EVP_MD_CTX_copy_ex(EVP_MD_CTX *out, const EVP_MD_CTX *in);
443 void EVP_MD_CTX_set_flags(EVP_MD_CTX *ctx, int flags);
444 void EVP_MD_CTX_clear_flags(EVP_MD_CTX *ctx, int flags);
445 int EVP_MD_CTX_ctrl(EVP_MD_CTX *ctx, int type, int arg, void *ptr);
446 int EVP_MD_CTX_test_flags(const EVP_MD_CTX *ctx, int flags);
447 
448 int EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl);
449 int EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *d, size_t cnt);
450 int EVP_DigestFinal_ex(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *s);
451 int EVP_Digest(const void *data, size_t count, unsigned char *md,
452     unsigned int *size, const EVP_MD *type, ENGINE *impl);
453 
454 int EVP_MD_CTX_copy(EVP_MD_CTX *out, const EVP_MD_CTX *in);
455 int EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type);
456 int EVP_DigestFinal(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *s);
457 
458 int EVP_read_pw_string(char *buf, int length, const char *prompt, int verify);
459 int EVP_read_pw_string_min(char *buf, int minlen, int maxlen,
460     const char *prompt, int verify);
461 void EVP_set_pw_prompt(const char *prompt);
462 char *EVP_get_pw_prompt(void);
463 
464 int EVP_BytesToKey(const EVP_CIPHER *type, const EVP_MD *md,
465     const unsigned char *salt, const unsigned char *data, int datal, int count,
466     unsigned char *key, unsigned char *iv);
467 
468 void EVP_CIPHER_CTX_set_flags(EVP_CIPHER_CTX *ctx, int flags);
469 void EVP_CIPHER_CTX_clear_flags(EVP_CIPHER_CTX *ctx, int flags);
470 int EVP_CIPHER_CTX_test_flags(const EVP_CIPHER_CTX *ctx, int flags);
471 
472 int EVP_EncryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
473     const unsigned char *key, const unsigned char *iv);
474 int EVP_EncryptInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
475     ENGINE *impl, const unsigned char *key, const unsigned char *iv);
476 int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
477     const unsigned char *in, int inl);
478 int EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl);
479 #ifndef LIBRESSL_INTERNAL
480 int EVP_EncryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl);
481 #endif
482 
483 int EVP_DecryptInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
484     const unsigned char *key, const unsigned char *iv);
485 int EVP_DecryptInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
486     ENGINE *impl, const unsigned char *key, const unsigned char *iv);
487 int EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
488     const unsigned char *in, int inl);
489 int EVP_DecryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *outm, int *outl);
490 #ifndef LIBRESSL_INTERNAL
491 int EVP_DecryptFinal(EVP_CIPHER_CTX *ctx, unsigned char *outm, int *outl);
492 #endif
493 
494 int EVP_CipherInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
495     const unsigned char *key, const unsigned char *iv, int enc);
496 int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
497     ENGINE *impl, const unsigned char *key, const unsigned char *iv, int enc);
498 int EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
499     const unsigned char *in, int inl);
500 int EVP_CipherFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *outm, int *outl);
501 #ifndef LIBRESSL_INTERNAL
502 int EVP_CipherFinal(EVP_CIPHER_CTX *ctx, unsigned char *outm, int *outl);
503 #endif
504 
505 int EVP_SignFinal(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *s,
506     EVP_PKEY *pkey);
507 
508 int EVP_VerifyFinal(EVP_MD_CTX *ctx, const unsigned char *sigbuf,
509     unsigned int siglen, EVP_PKEY *pkey);
510 
511 int EVP_DigestSignInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
512     const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey);
513 int EVP_DigestSignFinal(EVP_MD_CTX *ctx, unsigned char *sigret, size_t *siglen);
514 
515 int EVP_DigestSign(EVP_MD_CTX *ctx, unsigned char *sigret, size_t *siglen,
516     const unsigned char *tbs, size_t tbslen);
517 
518 int EVP_DigestVerifyInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
519     const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey);
520 int EVP_DigestVerifyFinal(EVP_MD_CTX *ctx, const unsigned char *sig,
521     size_t siglen);
522 
523 int EVP_DigestVerify(EVP_MD_CTX *ctx, const unsigned char *sigret,
524     size_t siglen, const unsigned char *tbs, size_t tbslen);
525 
526 int EVP_OpenInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *type,
527     const unsigned char *ek, int ekl, const unsigned char *iv, EVP_PKEY *priv);
528 int EVP_OpenFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl);
529 
530 int EVP_SealInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *type,
531     unsigned char **ek, int *ekl, unsigned char *iv, EVP_PKEY **pubk,
532     int npubk);
533 int EVP_SealFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl);
534 
535 EVP_ENCODE_CTX *EVP_ENCODE_CTX_new(void);
536 void EVP_ENCODE_CTX_free(EVP_ENCODE_CTX *ctx);
537 void EVP_EncodeInit(EVP_ENCODE_CTX *ctx);
538 int EVP_EncodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,
539     const unsigned char *in, int inl);
540 void EVP_EncodeFinal(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl);
541 int EVP_EncodeBlock(unsigned char *t, const unsigned char *f, int n);
542 
543 void EVP_DecodeInit(EVP_ENCODE_CTX *ctx);
544 int EVP_DecodeUpdate(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl,
545     const unsigned char *in, int inl);
546 int EVP_DecodeFinal(EVP_ENCODE_CTX *ctx, unsigned char *out, int *outl);
547 int EVP_DecodeBlock(unsigned char *t, const unsigned char *f, int n);
548 
549 void EVP_CIPHER_CTX_init(EVP_CIPHER_CTX *a);
550 int EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *a);
551 EVP_CIPHER_CTX *EVP_CIPHER_CTX_new(void);
552 void EVP_CIPHER_CTX_free(EVP_CIPHER_CTX *a);
553 int EVP_CIPHER_CTX_reset(EVP_CIPHER_CTX *a);
554 int EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *x, int keylen);
555 int EVP_CIPHER_CTX_set_padding(EVP_CIPHER_CTX *c, int pad);
556 int EVP_CIPHER_CTX_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr);
557 int EVP_CIPHER_CTX_rand_key(EVP_CIPHER_CTX *ctx, unsigned char *key);
558 
559 #ifndef OPENSSL_NO_BIO
560 const BIO_METHOD *BIO_f_md(void);
561 const BIO_METHOD *BIO_f_base64(void);
562 const BIO_METHOD *BIO_f_cipher(void);
563 int BIO_set_cipher(BIO *b, const EVP_CIPHER *c, const unsigned char *k,
564     const unsigned char *i, int enc);
565 #endif
566 
567 const EVP_MD *EVP_md_null(void);
568 #ifndef OPENSSL_NO_MD4
569 const EVP_MD *EVP_md4(void);
570 #endif
571 #ifndef OPENSSL_NO_MD5
572 const EVP_MD *EVP_md5(void);
573 const EVP_MD *EVP_md5_sha1(void);
574 #endif
575 #ifndef OPENSSL_NO_SHA
576 const EVP_MD *EVP_sha1(void);
577 #endif
578 #ifndef OPENSSL_NO_SHA256
579 const EVP_MD *EVP_sha224(void);
580 const EVP_MD *EVP_sha256(void);
581 #endif
582 #ifndef OPENSSL_NO_SHA512
583 const EVP_MD *EVP_sha384(void);
584 const EVP_MD *EVP_sha512(void);
585 #endif
586 #ifndef OPENSSL_NO_SM3
587 const EVP_MD *EVP_sm3(void);
588 #endif
589 #ifndef OPENSSL_NO_RIPEMD
590 const EVP_MD *EVP_ripemd160(void);
591 #endif
592 #ifndef OPENSSL_NO_WHIRLPOOL
593 const EVP_MD *EVP_whirlpool(void);
594 #endif
595 #ifndef OPENSSL_NO_GOST
596 const EVP_MD *EVP_gostr341194(void);
597 const EVP_MD *EVP_gost2814789imit(void);
598 const EVP_MD *EVP_streebog256(void);
599 const EVP_MD *EVP_streebog512(void);
600 #endif
601 const EVP_CIPHER *EVP_enc_null(void);		/* does nothing :-) */
602 #ifndef OPENSSL_NO_DES
603 const EVP_CIPHER *EVP_des_ecb(void);
604 const EVP_CIPHER *EVP_des_ede(void);
605 const EVP_CIPHER *EVP_des_ede3(void);
606 const EVP_CIPHER *EVP_des_ede_ecb(void);
607 const EVP_CIPHER *EVP_des_ede3_ecb(void);
608 const EVP_CIPHER *EVP_des_cfb64(void);
609 # define EVP_des_cfb EVP_des_cfb64
610 const EVP_CIPHER *EVP_des_cfb1(void);
611 const EVP_CIPHER *EVP_des_cfb8(void);
612 const EVP_CIPHER *EVP_des_ede_cfb64(void);
613 # define EVP_des_ede_cfb EVP_des_ede_cfb64
614 const EVP_CIPHER *EVP_des_ede3_cfb64(void);
615 # define EVP_des_ede3_cfb EVP_des_ede3_cfb64
616 const EVP_CIPHER *EVP_des_ede3_cfb1(void);
617 const EVP_CIPHER *EVP_des_ede3_cfb8(void);
618 const EVP_CIPHER *EVP_des_ofb(void);
619 const EVP_CIPHER *EVP_des_ede_ofb(void);
620 const EVP_CIPHER *EVP_des_ede3_ofb(void);
621 const EVP_CIPHER *EVP_des_cbc(void);
622 const EVP_CIPHER *EVP_des_ede_cbc(void);
623 const EVP_CIPHER *EVP_des_ede3_cbc(void);
624 const EVP_CIPHER *EVP_desx_cbc(void);
625 #endif
626 #ifndef OPENSSL_NO_RC4
627 const EVP_CIPHER *EVP_rc4(void);
628 const EVP_CIPHER *EVP_rc4_40(void);
629 #ifndef OPENSSL_NO_MD5
630 const EVP_CIPHER *EVP_rc4_hmac_md5(void);
631 #endif
632 #endif
633 #ifndef OPENSSL_NO_IDEA
634 const EVP_CIPHER *EVP_idea_ecb(void);
635 const EVP_CIPHER *EVP_idea_cfb64(void);
636 # define EVP_idea_cfb EVP_idea_cfb64
637 const EVP_CIPHER *EVP_idea_ofb(void);
638 const EVP_CIPHER *EVP_idea_cbc(void);
639 #endif
640 #ifndef OPENSSL_NO_RC2
641 const EVP_CIPHER *EVP_rc2_ecb(void);
642 const EVP_CIPHER *EVP_rc2_cbc(void);
643 const EVP_CIPHER *EVP_rc2_40_cbc(void);
644 const EVP_CIPHER *EVP_rc2_64_cbc(void);
645 const EVP_CIPHER *EVP_rc2_cfb64(void);
646 # define EVP_rc2_cfb EVP_rc2_cfb64
647 const EVP_CIPHER *EVP_rc2_ofb(void);
648 #endif
649 #ifndef OPENSSL_NO_BF
650 const EVP_CIPHER *EVP_bf_ecb(void);
651 const EVP_CIPHER *EVP_bf_cbc(void);
652 const EVP_CIPHER *EVP_bf_cfb64(void);
653 # define EVP_bf_cfb EVP_bf_cfb64
654 const EVP_CIPHER *EVP_bf_ofb(void);
655 #endif
656 #ifndef OPENSSL_NO_CAST
657 const EVP_CIPHER *EVP_cast5_ecb(void);
658 const EVP_CIPHER *EVP_cast5_cbc(void);
659 const EVP_CIPHER *EVP_cast5_cfb64(void);
660 # define EVP_cast5_cfb EVP_cast5_cfb64
661 const EVP_CIPHER *EVP_cast5_ofb(void);
662 #endif
663 #ifndef OPENSSL_NO_AES
664 const EVP_CIPHER *EVP_aes_128_ecb(void);
665 const EVP_CIPHER *EVP_aes_128_cbc(void);
666 const EVP_CIPHER *EVP_aes_128_cfb1(void);
667 const EVP_CIPHER *EVP_aes_128_cfb8(void);
668 const EVP_CIPHER *EVP_aes_128_cfb128(void);
669 # define EVP_aes_128_cfb EVP_aes_128_cfb128
670 const EVP_CIPHER *EVP_aes_128_ofb(void);
671 const EVP_CIPHER *EVP_aes_128_ctr(void);
672 const EVP_CIPHER *EVP_aes_128_ccm(void);
673 const EVP_CIPHER *EVP_aes_128_gcm(void);
674 const EVP_CIPHER *EVP_aes_128_wrap(void);
675 const EVP_CIPHER *EVP_aes_128_xts(void);
676 const EVP_CIPHER *EVP_aes_192_ecb(void);
677 const EVP_CIPHER *EVP_aes_192_cbc(void);
678 const EVP_CIPHER *EVP_aes_192_cfb1(void);
679 const EVP_CIPHER *EVP_aes_192_cfb8(void);
680 const EVP_CIPHER *EVP_aes_192_cfb128(void);
681 # define EVP_aes_192_cfb EVP_aes_192_cfb128
682 const EVP_CIPHER *EVP_aes_192_ofb(void);
683 const EVP_CIPHER *EVP_aes_192_ctr(void);
684 const EVP_CIPHER *EVP_aes_192_ccm(void);
685 const EVP_CIPHER *EVP_aes_192_gcm(void);
686 const EVP_CIPHER *EVP_aes_192_wrap(void);
687 const EVP_CIPHER *EVP_aes_256_ecb(void);
688 const EVP_CIPHER *EVP_aes_256_cbc(void);
689 const EVP_CIPHER *EVP_aes_256_cfb1(void);
690 const EVP_CIPHER *EVP_aes_256_cfb8(void);
691 const EVP_CIPHER *EVP_aes_256_cfb128(void);
692 # define EVP_aes_256_cfb EVP_aes_256_cfb128
693 const EVP_CIPHER *EVP_aes_256_ofb(void);
694 const EVP_CIPHER *EVP_aes_256_ctr(void);
695 const EVP_CIPHER *EVP_aes_256_ccm(void);
696 const EVP_CIPHER *EVP_aes_256_gcm(void);
697 const EVP_CIPHER *EVP_aes_256_wrap(void);
698 const EVP_CIPHER *EVP_aes_256_xts(void);
699 #if !defined(OPENSSL_NO_CHACHA) && !defined(OPENSSL_NO_POLY1305)
700 const EVP_CIPHER *EVP_chacha20_poly1305(void);
701 #endif
702 #if !defined(OPENSSL_NO_SHA) && !defined(OPENSSL_NO_SHA1)
703 const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha1(void);
704 const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha1(void);
705 #endif
706 #endif
707 #ifndef OPENSSL_NO_CAMELLIA
708 const EVP_CIPHER *EVP_camellia_128_ecb(void);
709 const EVP_CIPHER *EVP_camellia_128_cbc(void);
710 const EVP_CIPHER *EVP_camellia_128_cfb1(void);
711 const EVP_CIPHER *EVP_camellia_128_cfb8(void);
712 const EVP_CIPHER *EVP_camellia_128_cfb128(void);
713 # define EVP_camellia_128_cfb EVP_camellia_128_cfb128
714 const EVP_CIPHER *EVP_camellia_128_ofb(void);
715 const EVP_CIPHER *EVP_camellia_192_ecb(void);
716 const EVP_CIPHER *EVP_camellia_192_cbc(void);
717 const EVP_CIPHER *EVP_camellia_192_cfb1(void);
718 const EVP_CIPHER *EVP_camellia_192_cfb8(void);
719 const EVP_CIPHER *EVP_camellia_192_cfb128(void);
720 # define EVP_camellia_192_cfb EVP_camellia_192_cfb128
721 const EVP_CIPHER *EVP_camellia_192_ofb(void);
722 const EVP_CIPHER *EVP_camellia_256_ecb(void);
723 const EVP_CIPHER *EVP_camellia_256_cbc(void);
724 const EVP_CIPHER *EVP_camellia_256_cfb1(void);
725 const EVP_CIPHER *EVP_camellia_256_cfb8(void);
726 const EVP_CIPHER *EVP_camellia_256_cfb128(void);
727 # define EVP_camellia_256_cfb EVP_camellia_256_cfb128
728 const EVP_CIPHER *EVP_camellia_256_ofb(void);
729 #endif
730 
731 #ifndef OPENSSL_NO_CHACHA
732 const EVP_CIPHER *EVP_chacha20(void);
733 #endif
734 
735 #ifndef OPENSSL_NO_GOST
736 const EVP_CIPHER *EVP_gost2814789_ecb(void);
737 const EVP_CIPHER *EVP_gost2814789_cfb64(void);
738 const EVP_CIPHER *EVP_gost2814789_cnt(void);
739 #endif
740 
741 #ifndef OPENSSL_NO_SM4
742 const EVP_CIPHER *EVP_sm4_ecb(void);
743 const EVP_CIPHER *EVP_sm4_cbc(void);
744 const EVP_CIPHER *EVP_sm4_cfb128(void);
745 #define EVP_sm4_cfb EVP_sm4_cfb128
746 const EVP_CIPHER *EVP_sm4_ofb(void);
747 const EVP_CIPHER *EVP_sm4_ctr(void);
748 #endif
749 
750 void OPENSSL_add_all_algorithms_noconf(void);
751 void OPENSSL_add_all_algorithms_conf(void);
752 
753 #ifdef OPENSSL_LOAD_CONF
754 #define OpenSSL_add_all_algorithms() OPENSSL_add_all_algorithms_conf()
755 #else
756 #define OpenSSL_add_all_algorithms() OPENSSL_add_all_algorithms_noconf()
757 #endif
758 
759 void OpenSSL_add_all_ciphers(void);
760 void OpenSSL_add_all_digests(void);
761 
762 #define SSLeay_add_all_algorithms() OpenSSL_add_all_algorithms()
763 #define SSLeay_add_all_ciphers() OpenSSL_add_all_ciphers()
764 #define SSLeay_add_all_digests() OpenSSL_add_all_digests()
765 
766 int EVP_add_cipher(const EVP_CIPHER *cipher);
767 int EVP_add_digest(const EVP_MD *digest);
768 
769 const EVP_CIPHER *EVP_get_cipherbyname(const char *name);
770 const EVP_MD *EVP_get_digestbyname(const char *name);
771 void EVP_cleanup(void);
772 
773 void EVP_CIPHER_do_all(void (*fn)(const EVP_CIPHER *ciph, const char *from,
774     const char *to, void *x), void *arg);
775 void EVP_CIPHER_do_all_sorted(void (*fn)(const EVP_CIPHER *ciph,
776     const char *from, const char *to, void *x), void *arg);
777 
778 void EVP_MD_do_all(void (*fn)(const EVP_MD *ciph, const char *from,
779     const char *to, void *x), void *arg);
780 void EVP_MD_do_all_sorted(void (*fn)(const EVP_MD *ciph, const char *from,
781     const char *to, void *x), void *arg);
782 
783 int EVP_PKEY_decrypt_old(unsigned char *dec_key, const unsigned char *enc_key,
784     int enc_key_len, EVP_PKEY *private_key);
785 int EVP_PKEY_encrypt_old(unsigned char *enc_key, const unsigned char *key,
786     int key_len, EVP_PKEY *pub_key);
787 int EVP_PKEY_type(int type);
788 int EVP_PKEY_id(const EVP_PKEY *pkey);
789 int EVP_PKEY_base_id(const EVP_PKEY *pkey);
790 int EVP_PKEY_bits(const EVP_PKEY *pkey);
791 int EVP_PKEY_security_bits(const EVP_PKEY *pkey);
792 int EVP_PKEY_size(const EVP_PKEY *pkey);
793 int EVP_PKEY_set_type(EVP_PKEY *pkey, int type);
794 int EVP_PKEY_set_type_str(EVP_PKEY *pkey, const char *str, int len);
795 int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key);
796 void *EVP_PKEY_get0(const EVP_PKEY *pkey);
797 const unsigned char *EVP_PKEY_get0_hmac(const EVP_PKEY *pkey, size_t *len);
798 
799 #ifndef OPENSSL_NO_RSA
800 struct rsa_st;
801 struct rsa_st *EVP_PKEY_get0_RSA(EVP_PKEY *pkey);
802 struct rsa_st *EVP_PKEY_get1_RSA(EVP_PKEY *pkey);
803 int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, struct rsa_st *key);
804 #endif
805 #ifndef OPENSSL_NO_DSA
806 struct dsa_st;
807 struct dsa_st *EVP_PKEY_get0_DSA(EVP_PKEY *pkey);
808 struct dsa_st *EVP_PKEY_get1_DSA(EVP_PKEY *pkey);
809 int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, struct dsa_st *key);
810 #endif
811 #ifndef OPENSSL_NO_DH
812 struct dh_st;
813 struct dh_st *EVP_PKEY_get0_DH(EVP_PKEY *pkey);
814 struct dh_st *EVP_PKEY_get1_DH(EVP_PKEY *pkey);
815 int EVP_PKEY_set1_DH(EVP_PKEY *pkey, struct dh_st *key);
816 #endif
817 #ifndef OPENSSL_NO_EC
818 struct ec_key_st;
819 struct ec_key_st *EVP_PKEY_get0_EC_KEY(EVP_PKEY *pkey);
820 struct ec_key_st *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey);
821 int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, struct ec_key_st *key);
822 #endif
823 #ifndef OPENSSL_NO_GOST
824 struct gost_key_st;
825 #endif
826 
827 EVP_PKEY *EVP_PKEY_new(void);
828 void EVP_PKEY_free(EVP_PKEY *pkey);
829 int EVP_PKEY_up_ref(EVP_PKEY *pkey);
830 
831 EVP_PKEY *d2i_PublicKey(int type, EVP_PKEY **a, const unsigned char **pp,
832     long length);
833 int i2d_PublicKey(EVP_PKEY *a, unsigned char **pp);
834 
835 EVP_PKEY *d2i_PrivateKey(int type, EVP_PKEY **a, const unsigned char **pp,
836     long length);
837 EVP_PKEY *d2i_AutoPrivateKey(EVP_PKEY **a, const unsigned char **pp,
838     long length);
839 int i2d_PrivateKey(EVP_PKEY *a, unsigned char **pp);
840 
841 int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from);
842 int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey);
843 int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode);
844 int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b);
845 
846 int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b);
847 
848 int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey, int indent,
849     ASN1_PCTX *pctx);
850 int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey, int indent,
851     ASN1_PCTX *pctx);
852 int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey, int indent,
853     ASN1_PCTX *pctx);
854 
855 int EVP_PKEY_get_default_digest_nid(EVP_PKEY *pkey, int *pnid);
856 
857 int EVP_CIPHER_type(const EVP_CIPHER *ctx);
858 
859 /* calls methods */
860 int EVP_CIPHER_param_to_asn1(EVP_CIPHER_CTX *c, ASN1_TYPE *type);
861 int EVP_CIPHER_asn1_to_param(EVP_CIPHER_CTX *c, ASN1_TYPE *type);
862 
863 /* These are used by EVP_CIPHER methods */
864 int EVP_CIPHER_set_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type);
865 int EVP_CIPHER_get_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type);
866 
867 /* PKCS5 password based encryption */
868 int PKCS5_PBE_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
869     ASN1_TYPE *param, const EVP_CIPHER *cipher, const EVP_MD *md, int en_de);
870 int PKCS5_PBKDF2_HMAC_SHA1(const char *pass, int passlen,
871     const unsigned char *salt, int saltlen, int iter, int keylen,
872     unsigned char *out);
873 int PKCS5_PBKDF2_HMAC(const char *pass, int passlen, const unsigned char *salt,
874     int saltlen, int iter, const EVP_MD *digest, int keylen,
875     unsigned char *out);
876 int PKCS5_v2_PBE_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
877     ASN1_TYPE *param, const EVP_CIPHER *cipher, const EVP_MD *md,
878     int en_de);
879 
880 void PKCS5_PBE_add(void);
881 
882 int EVP_PBE_CipherInit (ASN1_OBJECT *pbe_obj, const char *pass, int passlen,
883     ASN1_TYPE *param, EVP_CIPHER_CTX *ctx, int en_de);
884 
885 /* PBE type */
886 
887 /* Can appear as the outermost AlgorithmIdentifier */
888 #define EVP_PBE_TYPE_OUTER	0x0
889 /* Is an PRF type OID */
890 #define EVP_PBE_TYPE_PRF	0x1
891 
892 int EVP_PBE_alg_add_type(int pbe_type, int pbe_nid, int cipher_nid, int md_nid,
893     EVP_PBE_KEYGEN *keygen);
894 int EVP_PBE_alg_add(int nid, const EVP_CIPHER *cipher, const EVP_MD *md,
895     EVP_PBE_KEYGEN *keygen);
896 int EVP_PBE_find(int type, int pbe_nid, int *pcnid, int *pmnid,
897     EVP_PBE_KEYGEN **pkeygen);
898 void EVP_PBE_cleanup(void);
899 
900 #define ASN1_PKEY_ALIAS		0x1
901 #define ASN1_PKEY_DYNAMIC	0x2
902 #define ASN1_PKEY_SIGPARAM_NULL	0x4
903 
904 #define ASN1_PKEY_CTRL_PKCS7_SIGN	0x1
905 #define ASN1_PKEY_CTRL_PKCS7_ENCRYPT	0x2
906 #define ASN1_PKEY_CTRL_DEFAULT_MD_NID	0x3
907 #define ASN1_PKEY_CTRL_CMS_SIGN		0x5
908 #define ASN1_PKEY_CTRL_CMS_ENVELOPE	0x7
909 #define ASN1_PKEY_CTRL_CMS_RI_TYPE	0x8
910 
911 int EVP_PKEY_asn1_get_count(void);
912 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_get0(int idx);
913 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find(ENGINE **pe, int type);
914 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find_str(ENGINE **pe,
915     const char *str, int len);
916 int EVP_PKEY_asn1_add0(const EVP_PKEY_ASN1_METHOD *ameth);
917 int EVP_PKEY_asn1_add_alias(int to, int from);
918 int EVP_PKEY_asn1_get0_info(int *ppkey_id, int *pkey_base_id, int *ppkey_flags,
919     const char **pinfo, const char **ppem_str,
920     const EVP_PKEY_ASN1_METHOD *ameth);
921 
922 const EVP_PKEY_ASN1_METHOD* EVP_PKEY_get0_asn1(const EVP_PKEY *pkey);
923 EVP_PKEY_ASN1_METHOD* EVP_PKEY_asn1_new(int id, int flags, const char *pem_str,
924     const char *info);
925 void EVP_PKEY_asn1_copy(EVP_PKEY_ASN1_METHOD *dst,
926     const EVP_PKEY_ASN1_METHOD *src);
927 void EVP_PKEY_asn1_free(EVP_PKEY_ASN1_METHOD *ameth);
928 void EVP_PKEY_asn1_set_public(EVP_PKEY_ASN1_METHOD *ameth,
929     int (*pub_decode)(EVP_PKEY *pk, X509_PUBKEY *pub),
930     int (*pub_encode)(X509_PUBKEY *pub, const EVP_PKEY *pk),
931     int (*pub_cmp)(const EVP_PKEY *a, const EVP_PKEY *b),
932     int (*pub_print)(BIO *out, const EVP_PKEY *pkey, int indent,
933     ASN1_PCTX *pctx),
934     int (*pkey_size)(const EVP_PKEY *pk),
935     int (*pkey_bits)(const EVP_PKEY *pk));
936 void EVP_PKEY_asn1_set_private(EVP_PKEY_ASN1_METHOD *ameth,
937     int (*priv_decode)(EVP_PKEY *pk, const PKCS8_PRIV_KEY_INFO *p8inf),
938     int (*priv_encode)(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pk),
939     int (*priv_print)(BIO *out, const EVP_PKEY *pkey, int indent,
940     ASN1_PCTX *pctx));
941 void EVP_PKEY_asn1_set_param(EVP_PKEY_ASN1_METHOD *ameth,
942     int (*param_decode)(EVP_PKEY *pkey, const unsigned char **pder, int derlen),
943     int (*param_encode)(const EVP_PKEY *pkey, unsigned char **pder),
944     int (*param_missing)(const EVP_PKEY *pk),
945     int (*param_copy)(EVP_PKEY *to, const EVP_PKEY *from),
946     int (*param_cmp)(const EVP_PKEY *a, const EVP_PKEY *b),
947     int (*param_print)(BIO *out, const EVP_PKEY *pkey, int indent,
948     ASN1_PCTX *pctx));
949 
950 void EVP_PKEY_asn1_set_free(EVP_PKEY_ASN1_METHOD *ameth,
951     void (*pkey_free)(EVP_PKEY *pkey));
952 void EVP_PKEY_asn1_set_ctrl(EVP_PKEY_ASN1_METHOD *ameth,
953     int (*pkey_ctrl)(EVP_PKEY *pkey, int op, long arg1, void *arg2));
954 void EVP_PKEY_asn1_set_security_bits(EVP_PKEY_ASN1_METHOD *ameth,
955     int (*pkey_security_bits)(const EVP_PKEY *pkey));
956 
957 void EVP_PKEY_asn1_set_check(EVP_PKEY_ASN1_METHOD *ameth,
958     int (*pkey_check)(const EVP_PKEY *pk));
959 void EVP_PKEY_asn1_set_public_check(EVP_PKEY_ASN1_METHOD *ameth,
960     int (*pkey_public_check)(const EVP_PKEY *pk));
961 void EVP_PKEY_asn1_set_param_check(EVP_PKEY_ASN1_METHOD *ameth,
962     int (*pkey_check)(const EVP_PKEY *pk));
963 
964 #define EVP_PKEY_OP_UNDEFINED		0
965 #define EVP_PKEY_OP_PARAMGEN		(1<<1)
966 #define EVP_PKEY_OP_KEYGEN		(1<<2)
967 #define EVP_PKEY_OP_SIGN		(1<<3)
968 #define EVP_PKEY_OP_VERIFY		(1<<4)
969 #define EVP_PKEY_OP_VERIFYRECOVER	(1<<5)
970 #define EVP_PKEY_OP_SIGNCTX		(1<<6)
971 #define EVP_PKEY_OP_VERIFYCTX		(1<<7)
972 #define EVP_PKEY_OP_ENCRYPT		(1<<8)
973 #define EVP_PKEY_OP_DECRYPT		(1<<9)
974 #define EVP_PKEY_OP_DERIVE		(1<<10)
975 
976 #define EVP_PKEY_OP_TYPE_SIG	\
977 	(EVP_PKEY_OP_SIGN | EVP_PKEY_OP_VERIFY | EVP_PKEY_OP_VERIFYRECOVER \
978 		| EVP_PKEY_OP_SIGNCTX | EVP_PKEY_OP_VERIFYCTX)
979 
980 #define EVP_PKEY_OP_TYPE_CRYPT \
981 	(EVP_PKEY_OP_ENCRYPT | EVP_PKEY_OP_DECRYPT)
982 
983 #define EVP_PKEY_OP_TYPE_NOGEN \
984 	(EVP_PKEY_OP_SIG | EVP_PKEY_OP_CRYPT | EVP_PKEY_OP_DERIVE)
985 
986 #define EVP_PKEY_OP_TYPE_GEN \
987 		(EVP_PKEY_OP_PARAMGEN | EVP_PKEY_OP_KEYGEN)
988 
989 #define EVP_PKEY_CTX_set_signature_md(ctx, md) \
990 		EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG, \
991 		    EVP_PKEY_CTRL_MD, 0, (void *)md)
992 
993 #define EVP_PKEY_CTX_get_signature_md(ctx, pmd) \
994 		EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG, \
995 		    EVP_PKEY_CTRL_GET_MD, 0, (void *)(pmd))
996 
997 #define EVP_PKEY_CTRL_MD		1
998 #define EVP_PKEY_CTRL_PEER_KEY		2
999 
1000 #define EVP_PKEY_CTRL_PKCS7_ENCRYPT	3
1001 #define EVP_PKEY_CTRL_PKCS7_DECRYPT	4
1002 
1003 #define EVP_PKEY_CTRL_PKCS7_SIGN	5
1004 
1005 #define EVP_PKEY_CTRL_SET_MAC_KEY	6
1006 
1007 #define EVP_PKEY_CTRL_DIGESTINIT	7
1008 
1009 /* Used by GOST key encryption in TLS */
1010 #define EVP_PKEY_CTRL_SET_IV		8
1011 
1012 #define EVP_PKEY_CTRL_CMS_ENCRYPT	9
1013 #define EVP_PKEY_CTRL_CMS_DECRYPT	10
1014 #define EVP_PKEY_CTRL_CMS_SIGN		11
1015 
1016 #define EVP_PKEY_CTRL_CIPHER		12
1017 
1018 #define EVP_PKEY_CTRL_GET_MD		13
1019 
1020 #define EVP_PKEY_ALG_CTRL		0x1000
1021 
1022 
1023 #define EVP_PKEY_FLAG_AUTOARGLEN	2
1024 /* Method handles all operations: don't assume any digest related
1025  * defaults.
1026  */
1027 #define EVP_PKEY_FLAG_SIGCTX_CUSTOM	4
1028 
1029 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type);
1030 EVP_PKEY_METHOD* EVP_PKEY_meth_new(int id, int flags);
1031 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
1032     const EVP_PKEY_METHOD *meth);
1033 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src);
1034 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth);
1035 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth);
1036 
1037 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e);
1038 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e);
1039 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(EVP_PKEY_CTX *ctx);
1040 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx);
1041 
1042 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype, int cmd,
1043     int p1, void *p2);
1044 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx, const char *type,
1045     const char *value);
1046 
1047 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx);
1048 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen);
1049 
1050 EVP_PKEY *EVP_PKEY_new_mac_key(int type, ENGINE *e, const unsigned char *key,
1051     int keylen);
1052 EVP_PKEY *EVP_PKEY_new_CMAC_key(ENGINE *e, const unsigned char *priv,
1053     size_t len, const EVP_CIPHER *cipher);
1054 
1055 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data);
1056 void *EVP_PKEY_CTX_get_data(EVP_PKEY_CTX *ctx);
1057 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx);
1058 
1059 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx);
1060 
1061 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data);
1062 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx);
1063 
1064 int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx);
1065 int EVP_PKEY_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
1066     const unsigned char *tbs, size_t tbslen);
1067 int EVP_PKEY_verify_init(EVP_PKEY_CTX *ctx);
1068 int EVP_PKEY_verify(EVP_PKEY_CTX *ctx, const unsigned char *sig, size_t siglen,
1069     const unsigned char *tbs, size_t tbslen);
1070 int EVP_PKEY_verify_recover_init(EVP_PKEY_CTX *ctx);
1071 int EVP_PKEY_verify_recover(EVP_PKEY_CTX *ctx, unsigned char *rout,
1072     size_t *routlen, const unsigned char *sig, size_t siglen);
1073 int EVP_PKEY_encrypt_init(EVP_PKEY_CTX *ctx);
1074 int EVP_PKEY_encrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
1075     const unsigned char *in, size_t inlen);
1076 int EVP_PKEY_decrypt_init(EVP_PKEY_CTX *ctx);
1077 int EVP_PKEY_decrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
1078     const unsigned char *in, size_t inlen);
1079 
1080 int EVP_PKEY_derive_init(EVP_PKEY_CTX *ctx);
1081 int EVP_PKEY_derive_set_peer(EVP_PKEY_CTX *ctx, EVP_PKEY *peer);
1082 int EVP_PKEY_derive(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen);
1083 
1084 typedef int EVP_PKEY_gen_cb(EVP_PKEY_CTX *ctx);
1085 
1086 int EVP_PKEY_paramgen_init(EVP_PKEY_CTX *ctx);
1087 int EVP_PKEY_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY **ppkey);
1088 int EVP_PKEY_keygen_init(EVP_PKEY_CTX *ctx);
1089 int EVP_PKEY_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY **ppkey);
1090 int EVP_PKEY_check(EVP_PKEY_CTX *ctx);
1091 int EVP_PKEY_public_check(EVP_PKEY_CTX *ctx);
1092 int EVP_PKEY_param_check(EVP_PKEY_CTX *ctx);
1093 
1094 void EVP_PKEY_CTX_set_cb(EVP_PKEY_CTX *ctx, EVP_PKEY_gen_cb *cb);
1095 EVP_PKEY_gen_cb *EVP_PKEY_CTX_get_cb(EVP_PKEY_CTX *ctx);
1096 
1097 int EVP_PKEY_CTX_get_keygen_info(EVP_PKEY_CTX *ctx, int idx);
1098 
1099 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
1100     int (*init)(EVP_PKEY_CTX *ctx));
1101 
1102 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
1103     int (*copy)(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src));
1104 
1105 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
1106     void (*cleanup)(EVP_PKEY_CTX *ctx));
1107 
1108 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
1109     int (*paramgen_init)(EVP_PKEY_CTX *ctx),
1110     int (*paramgen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey));
1111 
1112 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
1113     int (*keygen_init)(EVP_PKEY_CTX *ctx),
1114     int (*keygen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey));
1115 
1116 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
1117     int (*sign_init)(EVP_PKEY_CTX *ctx),
1118     int (*sign)(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
1119     const unsigned char *tbs, size_t tbslen));
1120 
1121 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
1122     int (*verify_init)(EVP_PKEY_CTX *ctx),
1123     int (*verify)(EVP_PKEY_CTX *ctx, const unsigned char *sig, size_t siglen,
1124     const unsigned char *tbs, size_t tbslen));
1125 
1126 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
1127     int (*verify_recover_init)(EVP_PKEY_CTX *ctx),
1128     int (*verify_recover)(EVP_PKEY_CTX *ctx, unsigned char *sig,
1129     size_t *siglen, const unsigned char *tbs, size_t tbslen));
1130 
1131 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
1132     int (*signctx_init)(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx),
1133     int (*signctx)(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
1134     EVP_MD_CTX *mctx));
1135 
1136 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
1137     int (*verifyctx_init)(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx),
1138     int (*verifyctx)(EVP_PKEY_CTX *ctx, const unsigned char *sig, int siglen,
1139     EVP_MD_CTX *mctx));
1140 
1141 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
1142     int (*encrypt_init)(EVP_PKEY_CTX *ctx),
1143     int (*encryptfn)(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
1144     const unsigned char *in, size_t inlen));
1145 
1146 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
1147     int (*decrypt_init)(EVP_PKEY_CTX *ctx),
1148     int (*decrypt)(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
1149     const unsigned char *in, size_t inlen));
1150 
1151 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
1152     int (*derive_init)(EVP_PKEY_CTX *ctx),
1153     int (*derive)(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen));
1154 
1155 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
1156     int (*ctrl)(EVP_PKEY_CTX *ctx, int type, int p1, void *p2),
1157     int (*ctrl_str)(EVP_PKEY_CTX *ctx, const char *type, const char *value));
1158 
1159 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
1160     int (*check)(EVP_PKEY *pkey));
1161 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
1162     int (*public_check)(EVP_PKEY *pkey));
1163 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
1164     int (*param_check)(EVP_PKEY *pkey));
1165 
1166 /* Authenticated Encryption with Additional Data.
1167  *
1168  * AEAD couples confidentiality and integrity in a single primtive. AEAD
1169  * algorithms take a key and then can seal and open individual messages. Each
1170  * message has a unique, per-message nonce and, optionally, additional data
1171  * which is authenticated but not included in the output. */
1172 
1173 typedef struct evp_aead_st EVP_AEAD;
1174 
1175 #ifndef OPENSSL_NO_AES
1176 /* EVP_aes_128_gcm is AES-128 in Galois Counter Mode. */
1177 const EVP_AEAD *EVP_aead_aes_128_gcm(void);
1178 /* EVP_aes_256_gcm is AES-256 in Galois Counter Mode. */
1179 const EVP_AEAD *EVP_aead_aes_256_gcm(void);
1180 #endif
1181 
1182 #if !defined(OPENSSL_NO_CHACHA) && !defined(OPENSSL_NO_POLY1305)
1183 /* EVP_aead_chacha20_poly1305 is ChaCha20 with a Poly1305 authenticator. */
1184 const EVP_AEAD *EVP_aead_chacha20_poly1305(void);
1185 /* EVP_aead_xchacha20_poly1305 is XChaCha20 with a Poly1305 authenticator. */
1186 const EVP_AEAD *EVP_aead_xchacha20_poly1305(void);
1187 #endif
1188 
1189 /* EVP_AEAD_key_length returns the length of the keys used. */
1190 size_t EVP_AEAD_key_length(const EVP_AEAD *aead);
1191 
1192 /* EVP_AEAD_nonce_length returns the length of the per-message nonce. */
1193 size_t EVP_AEAD_nonce_length(const EVP_AEAD *aead);
1194 
1195 /* EVP_AEAD_max_overhead returns the maximum number of additional bytes added
1196  * by the act of sealing data with the AEAD. */
1197 size_t EVP_AEAD_max_overhead(const EVP_AEAD *aead);
1198 
1199 /* EVP_AEAD_max_tag_len returns the maximum tag length when using this AEAD.
1200  * This * is the largest value that can be passed as a tag length to
1201  * EVP_AEAD_CTX_init. */
1202 size_t EVP_AEAD_max_tag_len(const EVP_AEAD *aead);
1203 
1204 /* An EVP_AEAD_CTX represents an AEAD algorithm configured with a specific key
1205  * and message-independent IV. */
1206 typedef struct evp_aead_ctx_st EVP_AEAD_CTX;
1207 
1208 /* EVP_AEAD_MAX_TAG_LENGTH is the maximum tag length used by any AEAD
1209  * defined in this header. */
1210 #define EVP_AEAD_MAX_TAG_LENGTH 16
1211 
1212 /* EVP_AEAD_DEFAULT_TAG_LENGTH is a magic value that can be passed to
1213  * EVP_AEAD_CTX_init to indicate that the default tag length for an AEAD
1214  * should be used. */
1215 #define EVP_AEAD_DEFAULT_TAG_LENGTH 0
1216 
1217 /* EVP_AEAD_CTX_new allocates a new context for use with EVP_AEAD_CTX_init.
1218  * It can be cleaned up for reuse with EVP_AEAD_CTX_cleanup and must be freed
1219  * with EVP_AEAD_CTX_free. */
1220 EVP_AEAD_CTX *EVP_AEAD_CTX_new(void);
1221 
1222 /* EVP_AEAD_CTX_free releases all memory owned by the context. */
1223 void EVP_AEAD_CTX_free(EVP_AEAD_CTX *ctx);
1224 
1225 /* EVP_AEAD_CTX_init initializes the context for the given AEAD algorithm.
1226  * The implementation argument may be NULL to choose the default implementation.
1227  * Authentication tags may be truncated by passing a tag length. A tag length
1228  * of zero indicates the default tag length should be used. */
1229 int EVP_AEAD_CTX_init(EVP_AEAD_CTX *ctx, const EVP_AEAD *aead,
1230     const unsigned char *key, size_t key_len, size_t tag_len, ENGINE *impl);
1231 
1232 /* EVP_AEAD_CTX_cleanup frees any data allocated for this context. */
1233 void EVP_AEAD_CTX_cleanup(EVP_AEAD_CTX *ctx);
1234 
1235 /* EVP_AEAD_CTX_seal encrypts and authenticates the input and authenticates
1236  * any additional data (AD), the result being written as output. One is
1237  * returned on success, otherwise zero.
1238  *
1239  * This function may be called (with the same EVP_AEAD_CTX) concurrently with
1240  * itself or EVP_AEAD_CTX_open.
1241  *
1242  * At most max_out_len bytes are written as output and, in order to ensure
1243  * success, this value should be the length of the input plus the result of
1244  * EVP_AEAD_overhead. On successful return, out_len is set to the actual
1245  * number of bytes written.
1246  *
1247  * The length of the nonce is must be equal to the result of
1248  * EVP_AEAD_nonce_length for this AEAD.
1249  *
1250  * EVP_AEAD_CTX_seal never results in a partial output. If max_out_len is
1251  * insufficient, zero will be returned and out_len will be set to zero.
1252  *
1253  * If the input and output are aliased then out must be <= in. */
1254 int EVP_AEAD_CTX_seal(const EVP_AEAD_CTX *ctx, unsigned char *out,
1255     size_t *out_len, size_t max_out_len, const unsigned char *nonce,
1256     size_t nonce_len, const unsigned char *in, size_t in_len,
1257     const unsigned char *ad, size_t ad_len);
1258 
1259 /* EVP_AEAD_CTX_open authenticates the input and additional data, decrypting
1260  * the input and writing it as output. One is returned on success, otherwise
1261  * zero.
1262  *
1263  * This function may be called (with the same EVP_AEAD_CTX) concurrently with
1264  * itself or EVP_AEAD_CTX_seal.
1265  *
1266  * At most the number of input bytes are written as output. In order to ensure
1267  * success, max_out_len should be at least the same as the input length. On
1268  * successful return out_len is set to the actual number of bytes written.
1269  *
1270  * The length of nonce must be equal to the result of EVP_AEAD_nonce_length
1271  * for this AEAD.
1272  *
1273  * EVP_AEAD_CTX_open never results in a partial output. If max_out_len is
1274  * insufficient, zero will be returned and out_len will be set to zero.
1275  *
1276  * If the input and output are aliased then out must be <= in. */
1277 int EVP_AEAD_CTX_open(const EVP_AEAD_CTX *ctx, unsigned char *out,
1278     size_t *out_len, size_t max_out_len, const unsigned char *nonce,
1279     size_t nonce_len, const unsigned char *in, size_t in_len,
1280     const unsigned char *ad, size_t ad_len);
1281 
1282 void EVP_add_alg_module(void);
1283 
1284 void ERR_load_EVP_strings(void);
1285 
1286 /* Error codes for the EVP functions. */
1287 
1288 /* Function codes. */
1289 #define EVP_F_AEAD_AES_GCM_INIT				 187
1290 #define EVP_F_AEAD_AES_GCM_OPEN				 188
1291 #define EVP_F_AEAD_AES_GCM_SEAL				 189
1292 #define EVP_F_AEAD_CHACHA20_POLY1305_INIT		 192
1293 #define EVP_F_AEAD_CHACHA20_POLY1305_OPEN		 193
1294 #define EVP_F_AEAD_CHACHA20_POLY1305_SEAL		 194
1295 #define EVP_F_AEAD_CTX_OPEN				 185
1296 #define EVP_F_AEAD_CTX_SEAL				 186
1297 #define EVP_F_AESNI_INIT_KEY				 165
1298 #define EVP_F_AESNI_XTS_CIPHER				 176
1299 #define EVP_F_AES_INIT_KEY				 133
1300 #define EVP_F_AES_XTS					 172
1301 #define EVP_F_AES_XTS_CIPHER				 175
1302 #define EVP_F_ALG_MODULE_INIT				 177
1303 #define EVP_F_CAMELLIA_INIT_KEY				 159
1304 #define EVP_F_CMAC_INIT					 173
1305 #define EVP_F_D2I_PKEY					 100
1306 #define EVP_F_DO_SIGVER_INIT				 161
1307 #define EVP_F_DSAPKEY2PKCS8				 134
1308 #define EVP_F_DSA_PKEY2PKCS8				 135
1309 #define EVP_F_ECDSA_PKEY2PKCS8				 129
1310 #define EVP_F_ECKEY_PKEY2PKCS8				 132
1311 #define EVP_F_EVP_AEAD_CTX_INIT				 180
1312 #define EVP_F_EVP_AEAD_CTX_OPEN				 190
1313 #define EVP_F_EVP_AEAD_CTX_SEAL				 191
1314 #define EVP_F_EVP_BYTESTOKEY				 200
1315 #define EVP_F_EVP_CIPHERINIT_EX				 123
1316 #define EVP_F_EVP_CIPHER_CTX_COPY			 163
1317 #define EVP_F_EVP_CIPHER_CTX_CTRL			 124
1318 #define EVP_F_EVP_CIPHER_CTX_SET_KEY_LENGTH		 122
1319 #define EVP_F_EVP_CIPHER_GET_ASN1_IV			 201
1320 #define EVP_F_EVP_CIPHER_SET_ASN1_IV			 202
1321 #define EVP_F_EVP_DECRYPTFINAL_EX			 101
1322 #define EVP_F_EVP_DECRYPTUPDATE				 199
1323 #define EVP_F_EVP_DIGESTFINAL_EX			 196
1324 #define EVP_F_EVP_DIGESTINIT_EX				 128
1325 #define EVP_F_EVP_ENCRYPTFINAL_EX			 127
1326 #define EVP_F_EVP_ENCRYPTUPDATE				 198
1327 #define EVP_F_EVP_MD_CTX_COPY_EX			 110
1328 #define EVP_F_EVP_MD_CTX_CTRL				 195
1329 #define EVP_F_EVP_MD_SIZE				 162
1330 #define EVP_F_EVP_OPENINIT				 102
1331 #define EVP_F_EVP_PBE_ALG_ADD				 115
1332 #define EVP_F_EVP_PBE_ALG_ADD_TYPE			 160
1333 #define EVP_F_EVP_PBE_CIPHERINIT			 116
1334 #define EVP_F_EVP_PKCS82PKEY				 111
1335 #define EVP_F_EVP_PKCS82PKEY_BROKEN			 136
1336 #define EVP_F_EVP_PKEY2PKCS8_BROKEN			 113
1337 #define EVP_F_EVP_PKEY_COPY_PARAMETERS			 103
1338 #define EVP_F_EVP_PKEY_CTX_CTRL				 137
1339 #define EVP_F_EVP_PKEY_CTX_CTRL_STR			 150
1340 #define EVP_F_EVP_PKEY_CTX_DUP				 156
1341 #define EVP_F_EVP_PKEY_DECRYPT				 104
1342 #define EVP_F_EVP_PKEY_DECRYPT_INIT			 138
1343 #define EVP_F_EVP_PKEY_DECRYPT_OLD			 151
1344 #define EVP_F_EVP_PKEY_DERIVE				 153
1345 #define EVP_F_EVP_PKEY_DERIVE_INIT			 154
1346 #define EVP_F_EVP_PKEY_DERIVE_SET_PEER			 155
1347 #define EVP_F_EVP_PKEY_ENCRYPT				 105
1348 #define EVP_F_EVP_PKEY_ENCRYPT_INIT			 139
1349 #define EVP_F_EVP_PKEY_ENCRYPT_OLD			 152
1350 #define EVP_F_EVP_PKEY_GET1_DH				 119
1351 #define EVP_F_EVP_PKEY_GET1_DSA				 120
1352 #define EVP_F_EVP_PKEY_GET1_ECDSA			 130
1353 #define EVP_F_EVP_PKEY_GET1_EC_KEY			 131
1354 #define EVP_F_EVP_PKEY_GET1_RSA				 121
1355 #define EVP_F_EVP_PKEY_KEYGEN				 146
1356 #define EVP_F_EVP_PKEY_KEYGEN_INIT			 147
1357 #define EVP_F_EVP_PKEY_NEW				 106
1358 #define EVP_F_EVP_PKEY_PARAMGEN				 148
1359 #define EVP_F_EVP_PKEY_PARAMGEN_INIT			 149
1360 #define EVP_F_EVP_PKEY_SIGN				 140
1361 #define EVP_F_EVP_PKEY_SIGN_INIT			 141
1362 #define EVP_F_EVP_PKEY_VERIFY				 142
1363 #define EVP_F_EVP_PKEY_VERIFY_INIT			 143
1364 #define EVP_F_EVP_PKEY_VERIFY_RECOVER			 144
1365 #define EVP_F_EVP_PKEY_VERIFY_RECOVER_INIT		 145
1366 #define EVP_F_EVP_RIJNDAEL				 126
1367 #define EVP_F_EVP_SIGNFINAL				 107
1368 #define EVP_F_EVP_VERIFYFINAL				 108
1369 #define EVP_F_FIPS_CIPHERINIT				 166
1370 #define EVP_F_FIPS_CIPHER_CTX_COPY			 170
1371 #define EVP_F_FIPS_CIPHER_CTX_CTRL			 167
1372 #define EVP_F_FIPS_CIPHER_CTX_SET_KEY_LENGTH		 171
1373 #define EVP_F_FIPS_DIGESTINIT				 168
1374 #define EVP_F_FIPS_MD_CTX_COPY				 169
1375 #define EVP_F_HMAC_INIT_EX				 174
1376 #define EVP_F_INT_CTX_NEW				 157
1377 #define EVP_F_PKCS5_PBE_KEYIVGEN			 117
1378 #define EVP_F_PKCS5_V2_PBE_KEYIVGEN			 118
1379 #define EVP_F_PKCS5_V2_PBKDF2_KEYIVGEN			 164
1380 #define EVP_F_PKCS8_SET_BROKEN				 112
1381 #define EVP_F_PKEY_SET_TYPE				 158
1382 #define EVP_F_RC2_GET_ASN1_TYPE_AND_IV			 197
1383 #define EVP_F_RC2_MAGIC_TO_METH				 109
1384 #define EVP_F_RC5_CTRL					 125
1385 
1386 /* Reason codes. */
1387 #define EVP_R_AES_IV_SETUP_FAILED			 162
1388 #define EVP_R_AES_KEY_SETUP_FAILED			 143
1389 #define EVP_R_ASN1_LIB					 140
1390 #define EVP_R_BAD_BLOCK_LENGTH				 136
1391 #define EVP_R_BAD_DECRYPT				 100
1392 #define EVP_R_BAD_KEY_LENGTH				 137
1393 #define EVP_R_BN_DECODE_ERROR				 112
1394 #define EVP_R_BN_PUBKEY_ERROR				 113
1395 #define EVP_R_BUFFER_TOO_SMALL				 155
1396 #define EVP_R_CAMELLIA_KEY_SETUP_FAILED			 157
1397 #define EVP_R_CIPHER_PARAMETER_ERROR			 122
1398 #define EVP_R_COMMAND_NOT_SUPPORTED			 147
1399 #define EVP_R_CTRL_NOT_IMPLEMENTED			 132
1400 #define EVP_R_CTRL_OPERATION_NOT_IMPLEMENTED		 133
1401 #define EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH		 138
1402 #define EVP_R_DECODE_ERROR				 114
1403 #define EVP_R_DIFFERENT_KEY_TYPES			 101
1404 #define EVP_R_DIFFERENT_PARAMETERS			 153
1405 #define EVP_R_DISABLED_FOR_FIPS				 163
1406 #define EVP_R_ENCODE_ERROR				 115
1407 #define EVP_R_ERROR_LOADING_SECTION			 165
1408 #define EVP_R_ERROR_SETTING_FIPS_MODE			 166
1409 #define EVP_R_EVP_PBE_CIPHERINIT_ERROR			 119
1410 #define EVP_R_EXPECTING_AN_HMAC_KEY			 174
1411 #define EVP_R_EXPECTING_AN_RSA_KEY			 127
1412 #define EVP_R_EXPECTING_A_DH_KEY			 128
1413 #define EVP_R_EXPECTING_A_DSA_KEY			 129
1414 #define EVP_R_EXPECTING_A_ECDSA_KEY			 141
1415 #define EVP_R_EXPECTING_A_EC_KEY			 142
1416 #define EVP_R_FIPS_MODE_NOT_SUPPORTED			 167
1417 #define EVP_R_INITIALIZATION_ERROR			 134
1418 #define EVP_R_INPUT_NOT_INITIALIZED			 111
1419 #define EVP_R_INVALID_DIGEST				 152
1420 #define EVP_R_INVALID_FIPS_MODE				 168
1421 #define EVP_R_INVALID_IV_LENGTH				 194
1422 #define EVP_R_INVALID_KEY_LENGTH			 130
1423 #define EVP_R_INVALID_OPERATION				 148
1424 #define EVP_R_IV_TOO_LARGE				 102
1425 #define EVP_R_KEYGEN_FAILURE				 120
1426 #define EVP_R_KEY_SETUP_FAILED				 180
1427 #define EVP_R_MESSAGE_DIGEST_IS_NULL			 159
1428 #define EVP_R_METHOD_NOT_SUPPORTED			 144
1429 #define EVP_R_MISSING_PARAMETERS			 103
1430 #define EVP_R_NO_CIPHER_SET				 131
1431 #define EVP_R_NO_DEFAULT_DIGEST				 158
1432 #define EVP_R_NO_DIGEST_SET				 139
1433 #define EVP_R_NO_DSA_PARAMETERS				 116
1434 #define EVP_R_NO_KEY_SET				 154
1435 #define EVP_R_NO_OPERATION_SET				 149
1436 #define EVP_R_NO_SIGN_FUNCTION_CONFIGURED		 104
1437 #define EVP_R_NO_VERIFY_FUNCTION_CONFIGURED		 105
1438 #define EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE	 150
1439 #define EVP_R_OPERATON_NOT_INITIALIZED			 151
1440 #define EVP_R_OUTPUT_ALIASES_INPUT			 172
1441 #define EVP_R_PKCS8_UNKNOWN_BROKEN_TYPE			 117
1442 #define EVP_R_PRIVATE_KEY_DECODE_ERROR			 145
1443 #define EVP_R_PRIVATE_KEY_ENCODE_ERROR			 146
1444 #define EVP_R_PUBLIC_KEY_NOT_RSA			 106
1445 #define EVP_R_TAG_TOO_LARGE				 171
1446 #define EVP_R_TOO_LARGE					 164
1447 #define EVP_R_UNKNOWN_CIPHER				 160
1448 #define EVP_R_UNKNOWN_DIGEST				 161
1449 #define EVP_R_UNKNOWN_OPTION				 169
1450 #define EVP_R_UNKNOWN_PBE_ALGORITHM			 121
1451 #define EVP_R_UNSUPORTED_NUMBER_OF_ROUNDS		 135
1452 #define EVP_R_UNSUPPORTED_ALGORITHM			 156
1453 #define EVP_R_UNSUPPORTED_CIPHER			 107
1454 #define EVP_R_UNSUPPORTED_KEYLENGTH			 123
1455 #define EVP_R_UNSUPPORTED_KEY_DERIVATION_FUNCTION	 124
1456 #define EVP_R_UNSUPPORTED_KEY_SIZE			 108
1457 #define EVP_R_UNSUPPORTED_PRF				 125
1458 #define EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM		 118
1459 #define EVP_R_WRAP_MODE_NOT_ALLOWED			 170
1460 #define EVP_R_UNSUPPORTED_SALT_TYPE			 126
1461 #define EVP_R_WRONG_FINAL_BLOCK_LENGTH			 109
1462 #define EVP_R_WRONG_PUBLIC_KEY_TYPE			 110
1463 
1464 #ifdef  __cplusplus
1465 }
1466 #endif
1467 #endif
1468