2 * Copyright 2015-2017 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 #include "internal/refcount.h"
12 struct evp_pkey_ctx_st {
13 /* Method associated with this operation */
14 const EVP_PKEY_METHOD *pmeth;
15 /* Engine that implements this method or NULL if builtin */
17 /* Key: may be NULL */
19 /* Peer key for key agreement, may be NULL */
21 /* Actual operation */
23 /* Algorithm specific data */
25 /* Application specific data */
28 EVP_PKEY_gen_cb *pkey_gencb;
29 /* implementation specific keygen data */
31 int keygen_info_count;
32 } /* EVP_PKEY_CTX */ ;
34 #define EVP_PKEY_FLAG_DYNAMIC 1
36 struct evp_pkey_method_st {
39 int (*init) (EVP_PKEY_CTX *ctx);
40 int (*copy) (EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src);
41 void (*cleanup) (EVP_PKEY_CTX *ctx);
42 int (*paramgen_init) (EVP_PKEY_CTX *ctx);
43 int (*paramgen) (EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
44 int (*keygen_init) (EVP_PKEY_CTX *ctx);
45 int (*keygen) (EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
46 int (*sign_init) (EVP_PKEY_CTX *ctx);
47 int (*sign) (EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
48 const unsigned char *tbs, size_t tbslen);
49 int (*verify_init) (EVP_PKEY_CTX *ctx);
50 int (*verify) (EVP_PKEY_CTX *ctx,
51 const unsigned char *sig, size_t siglen,
52 const unsigned char *tbs, size_t tbslen);
53 int (*verify_recover_init) (EVP_PKEY_CTX *ctx);
54 int (*verify_recover) (EVP_PKEY_CTX *ctx,
55 unsigned char *rout, size_t *routlen,
56 const unsigned char *sig, size_t siglen);
57 int (*signctx_init) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
58 int (*signctx) (EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
60 int (*verifyctx_init) (EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx);
61 int (*verifyctx) (EVP_PKEY_CTX *ctx, const unsigned char *sig, int siglen,
63 int (*encrypt_init) (EVP_PKEY_CTX *ctx);
64 int (*encrypt) (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
65 const unsigned char *in, size_t inlen);
66 int (*decrypt_init) (EVP_PKEY_CTX *ctx);
67 int (*decrypt) (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
68 const unsigned char *in, size_t inlen);
69 int (*derive_init) (EVP_PKEY_CTX *ctx);
70 int (*derive) (EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen);
71 int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1, void *p2);
72 int (*ctrl_str) (EVP_PKEY_CTX *ctx, const char *type, const char *value);
73 int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
74 const unsigned char *tbs, size_t tbslen);
75 int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
76 size_t siglen, const unsigned char *tbs,
78 } /* EVP_PKEY_METHOD */ ;
80 DEFINE_STACK_OF_CONST(EVP_PKEY_METHOD)
82 void evp_pkey_set_cb_translate(BN_GENCB *cb, EVP_PKEY_CTX *ctx);
84 extern const EVP_PKEY_METHOD cmac_pkey_meth;
85 extern const EVP_PKEY_METHOD dh_pkey_meth;
86 extern const EVP_PKEY_METHOD dhx_pkey_meth;
87 extern const EVP_PKEY_METHOD dsa_pkey_meth;
88 extern const EVP_PKEY_METHOD ec_pkey_meth;
89 extern const EVP_PKEY_METHOD ecx25519_pkey_meth;
90 extern const EVP_PKEY_METHOD ed25519_pkey_meth;
91 extern const EVP_PKEY_METHOD hmac_pkey_meth;
92 extern const EVP_PKEY_METHOD rsa_pkey_meth;
93 extern const EVP_PKEY_METHOD rsa_pss_pkey_meth;
94 extern const EVP_PKEY_METHOD scrypt_pkey_meth;
95 extern const EVP_PKEY_METHOD tls1_prf_pkey_meth;
96 extern const EVP_PKEY_METHOD hkdf_pkey_meth;
97 extern const EVP_PKEY_METHOD poly1305_pkey_meth;
98 extern const EVP_PKEY_METHOD siphash_pkey_meth;
105 int (*init) (EVP_MD_CTX *ctx);
106 int (*update) (EVP_MD_CTX *ctx, const void *data, size_t count);
107 int (*final) (EVP_MD_CTX *ctx, unsigned char *md);
108 int (*copy) (EVP_MD_CTX *to, const EVP_MD_CTX *from);
109 int (*cleanup) (EVP_MD_CTX *ctx);
111 int ctx_size; /* how big does the ctx->md_data need to be */
112 /* control function */
113 int (*md_ctrl) (EVP_MD_CTX *ctx, int cmd, int p1, void *p2);
116 struct evp_cipher_st {
119 /* Default value for variable length ciphers */
125 int (*init) (EVP_CIPHER_CTX *ctx, const unsigned char *key,
126 const unsigned char *iv, int enc);
127 /* encrypt/decrypt data */
128 int (*do_cipher) (EVP_CIPHER_CTX *ctx, unsigned char *out,
129 const unsigned char *in, size_t inl);
131 int (*cleanup) (EVP_CIPHER_CTX *);
132 /* how big ctx->cipher_data needs to be */
134 /* Populate a ASN1_TYPE with parameters */
135 int (*set_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
136 /* Get parameters from a ASN1_TYPE */
137 int (*get_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
138 /* Miscellaneous operations */
139 int (*ctrl) (EVP_CIPHER_CTX *, int type, int arg, void *ptr);
140 /* Application data */
144 /* Macros to code block cipher wrappers */
146 /* Wrapper functions for each cipher mode */
148 #define EVP_C_DATA(kstruct, ctx) \
149 ((kstruct *)EVP_CIPHER_CTX_get_cipher_data(ctx))
151 #define BLOCK_CIPHER_ecb_loop() \
153 bl = EVP_CIPHER_CTX_cipher(ctx)->block_size; \
154 if (inl < bl) return 1;\
156 for (i=0; i <= inl; i+=bl)
158 #define BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
159 static int cname##_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
161 BLOCK_CIPHER_ecb_loop() \
162 cprefix##_ecb_encrypt(in + i, out + i, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_encrypting(ctx)); \
166 #define EVP_MAXCHUNK ((size_t)1<<(sizeof(long)*8-2))
168 #define BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched) \
169 static int cname##_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
171 while(inl>=EVP_MAXCHUNK) {\
172 int num = EVP_CIPHER_CTX_num(ctx);\
173 cprefix##_ofb##cbits##_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), &num); \
174 EVP_CIPHER_CTX_set_num(ctx, num);\
180 int num = EVP_CIPHER_CTX_num(ctx);\
181 cprefix##_ofb##cbits##_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), &num); \
182 EVP_CIPHER_CTX_set_num(ctx, num);\
187 #define BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
188 static int cname##_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
190 while(inl>=EVP_MAXCHUNK) \
192 cprefix##_cbc_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_encrypting(ctx));\
198 cprefix##_cbc_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_encrypting(ctx));\
202 #define BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
203 static int cname##_cfb##cbits##_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
205 size_t chunk = EVP_MAXCHUNK;\
206 if (cbits == 1) chunk >>= 3;\
207 if (inl < chunk) chunk = inl;\
208 while (inl && inl >= chunk)\
210 int num = EVP_CIPHER_CTX_num(ctx);\
211 cprefix##_cfb##cbits##_encrypt(in, out, (long) \
213 && !EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS) \
215 &EVP_C_DATA(kstruct, ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx),\
216 &num, EVP_CIPHER_CTX_encrypting(ctx));\
217 EVP_CIPHER_CTX_set_num(ctx, num);\
221 if (inl < chunk) chunk = inl;\
226 #define BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
227 BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
228 BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
229 BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
230 BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched)
232 #define BLOCK_CIPHER_def1(cname, nmode, mode, MODE, kstruct, nid, block_size, \
233 key_len, iv_len, flags, init_key, cleanup, \
234 set_asn1, get_asn1, ctrl) \
235 static const EVP_CIPHER cname##_##mode = { \
236 nid##_##nmode, block_size, key_len, iv_len, \
237 flags | EVP_CIPH_##MODE##_MODE, \
239 cname##_##mode##_cipher, \
246 const EVP_CIPHER *EVP_##cname##_##mode(void) { return &cname##_##mode; }
248 #define BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, \
249 iv_len, flags, init_key, cleanup, set_asn1, \
251 BLOCK_CIPHER_def1(cname, cbc, cbc, CBC, kstruct, nid, block_size, key_len, \
252 iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
254 #define BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, \
255 iv_len, cbits, flags, init_key, cleanup, \
256 set_asn1, get_asn1, ctrl) \
257 BLOCK_CIPHER_def1(cname, cfb##cbits, cfb##cbits, CFB, kstruct, nid, 1, \
258 key_len, iv_len, flags, init_key, cleanup, set_asn1, \
261 #define BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, \
262 iv_len, cbits, flags, init_key, cleanup, \
263 set_asn1, get_asn1, ctrl) \
264 BLOCK_CIPHER_def1(cname, ofb##cbits, ofb, OFB, kstruct, nid, 1, \
265 key_len, iv_len, flags, init_key, cleanup, set_asn1, \
268 #define BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, \
269 flags, init_key, cleanup, set_asn1, \
271 BLOCK_CIPHER_def1(cname, ecb, ecb, ECB, kstruct, nid, block_size, key_len, \
272 0, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
274 #define BLOCK_CIPHER_defs(cname, kstruct, \
275 nid, block_size, key_len, iv_len, cbits, flags, \
276 init_key, cleanup, set_asn1, get_asn1, ctrl) \
277 BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
278 init_key, cleanup, set_asn1, get_asn1, ctrl) \
279 BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, iv_len, cbits, \
280 flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
281 BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, iv_len, cbits, \
282 flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
283 BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, flags, \
284 init_key, cleanup, set_asn1, get_asn1, ctrl)
287 #define BLOCK_CIPHER_defs(cname, kstruct, \
288 nid, block_size, key_len, iv_len, flags,\
289 init_key, cleanup, set_asn1, get_asn1, ctrl)\
290 static const EVP_CIPHER cname##_cbc = {\
291 nid##_cbc, block_size, key_len, iv_len, \
292 flags | EVP_CIPH_CBC_MODE,\
296 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
297 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
302 const EVP_CIPHER *EVP_##cname##_cbc(void) { return &cname##_cbc; }\
303 static const EVP_CIPHER cname##_cfb = {\
304 nid##_cfb64, 1, key_len, iv_len, \
305 flags | EVP_CIPH_CFB_MODE,\
309 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
310 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
315 const EVP_CIPHER *EVP_##cname##_cfb(void) { return &cname##_cfb; }\
316 static const EVP_CIPHER cname##_ofb = {\
317 nid##_ofb64, 1, key_len, iv_len, \
318 flags | EVP_CIPH_OFB_MODE,\
322 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
323 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
328 const EVP_CIPHER *EVP_##cname##_ofb(void) { return &cname##_ofb; }\
329 static const EVP_CIPHER cname##_ecb = {\
330 nid##_ecb, block_size, key_len, iv_len, \
331 flags | EVP_CIPH_ECB_MODE,\
335 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
336 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
341 const EVP_CIPHER *EVP_##cname##_ecb(void) { return &cname##_ecb; }
344 #define IMPLEMENT_BLOCK_CIPHER(cname, ksched, cprefix, kstruct, nid, \
345 block_size, key_len, iv_len, cbits, \
347 cleanup, set_asn1, get_asn1, ctrl) \
348 BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
349 BLOCK_CIPHER_defs(cname, kstruct, nid, block_size, key_len, iv_len, \
350 cbits, flags, init_key, cleanup, set_asn1, \
353 #define IMPLEMENT_CFBR(cipher,cprefix,kstruct,ksched,keysize,cbits,iv_len,fl) \
354 BLOCK_CIPHER_func_cfb(cipher##_##keysize,cprefix,cbits,kstruct,ksched) \
355 BLOCK_CIPHER_def_cfb(cipher##_##keysize,kstruct, \
356 NID_##cipher##_##keysize, keysize/8, iv_len, cbits, \
357 (fl)|EVP_CIPH_FLAG_DEFAULT_ASN1, \
358 cipher##_init_key, NULL, NULL, NULL, NULL)
362 * Type needs to be a bit field Sub-type needs to be for variations on the
363 * method, as in, can it do arbitrary encryption....
368 CRYPTO_REF_COUNT references;
369 const EVP_PKEY_ASN1_METHOD *ameth;
373 # ifndef OPENSSL_NO_RSA
374 struct rsa_st *rsa; /* RSA */
376 # ifndef OPENSSL_NO_DSA
377 struct dsa_st *dsa; /* DSA */
379 # ifndef OPENSSL_NO_DH
380 struct dh_st *dh; /* DH */
382 # ifndef OPENSSL_NO_EC
383 struct ec_key_st *ec; /* ECC */
387 STACK_OF(X509_ATTRIBUTE) *attributes; /* [ 0 ] */
392 void openssl_add_all_ciphers_int(void);
393 void openssl_add_all_digests_int(void);
394 void evp_cleanup_int(void);
396 /* Pulling defines out of C soure files */
398 #define EVP_RC4_KEY_SIZE 16
399 #ifndef TLS1_1_VERSION
400 # define TLS1_1_VERSION 0x0302