2 * Copyright 2015-2018 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 int (*check) (EVP_PKEY *pkey);
79 int (*public_check) (EVP_PKEY *pkey);
80 int (*param_check) (EVP_PKEY *pkey);
81 } /* EVP_PKEY_METHOD */ ;
83 DEFINE_STACK_OF_CONST(EVP_PKEY_METHOD)
85 void evp_pkey_set_cb_translate(BN_GENCB *cb, EVP_PKEY_CTX *ctx);
87 extern const EVP_PKEY_METHOD cmac_pkey_meth;
88 extern const EVP_PKEY_METHOD dh_pkey_meth;
89 extern const EVP_PKEY_METHOD dhx_pkey_meth;
90 extern const EVP_PKEY_METHOD dsa_pkey_meth;
91 extern const EVP_PKEY_METHOD ec_pkey_meth;
92 extern const EVP_PKEY_METHOD ecx25519_pkey_meth;
93 extern const EVP_PKEY_METHOD ecx448_pkey_meth;
94 extern const EVP_PKEY_METHOD ed25519_pkey_meth;
95 extern const EVP_PKEY_METHOD ed448_pkey_meth;
96 extern const EVP_PKEY_METHOD hmac_pkey_meth;
97 extern const EVP_PKEY_METHOD rsa_pkey_meth;
98 extern const EVP_PKEY_METHOD rsa_pss_pkey_meth;
99 extern const EVP_PKEY_METHOD scrypt_pkey_meth;
100 extern const EVP_PKEY_METHOD tls1_prf_pkey_meth;
101 extern const EVP_PKEY_METHOD hkdf_pkey_meth;
102 extern const EVP_PKEY_METHOD poly1305_pkey_meth;
103 extern const EVP_PKEY_METHOD siphash_pkey_meth;
110 int (*init) (EVP_MD_CTX *ctx);
111 int (*update) (EVP_MD_CTX *ctx, const void *data, size_t count);
112 int (*final) (EVP_MD_CTX *ctx, unsigned char *md);
113 int (*copy) (EVP_MD_CTX *to, const EVP_MD_CTX *from);
114 int (*cleanup) (EVP_MD_CTX *ctx);
116 int ctx_size; /* how big does the ctx->md_data need to be */
117 /* control function */
118 int (*md_ctrl) (EVP_MD_CTX *ctx, int cmd, int p1, void *p2);
121 struct evp_cipher_st {
124 /* Default value for variable length ciphers */
130 int (*init) (EVP_CIPHER_CTX *ctx, const unsigned char *key,
131 const unsigned char *iv, int enc);
132 /* encrypt/decrypt data */
133 int (*do_cipher) (EVP_CIPHER_CTX *ctx, unsigned char *out,
134 const unsigned char *in, size_t inl);
136 int (*cleanup) (EVP_CIPHER_CTX *);
137 /* how big ctx->cipher_data needs to be */
139 /* Populate a ASN1_TYPE with parameters */
140 int (*set_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
141 /* Get parameters from a ASN1_TYPE */
142 int (*get_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
143 /* Miscellaneous operations */
144 int (*ctrl) (EVP_CIPHER_CTX *, int type, int arg, void *ptr);
145 /* Application data */
149 /* Macros to code block cipher wrappers */
151 /* Wrapper functions for each cipher mode */
153 #define EVP_C_DATA(kstruct, ctx) \
154 ((kstruct *)EVP_CIPHER_CTX_get_cipher_data(ctx))
156 #define BLOCK_CIPHER_ecb_loop() \
158 bl = EVP_CIPHER_CTX_cipher(ctx)->block_size; \
159 if (inl < bl) return 1;\
161 for (i=0; i <= inl; i+=bl)
163 #define BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
164 static int cname##_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
166 BLOCK_CIPHER_ecb_loop() \
167 cprefix##_ecb_encrypt(in + i, out + i, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_encrypting(ctx)); \
171 #define EVP_MAXCHUNK ((size_t)1<<(sizeof(long)*8-2))
173 #define BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched) \
174 static int cname##_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
176 while(inl>=EVP_MAXCHUNK) {\
177 int num = EVP_CIPHER_CTX_num(ctx);\
178 cprefix##_ofb##cbits##_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), &num); \
179 EVP_CIPHER_CTX_set_num(ctx, num);\
185 int num = EVP_CIPHER_CTX_num(ctx);\
186 cprefix##_ofb##cbits##_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), &num); \
187 EVP_CIPHER_CTX_set_num(ctx, num);\
192 #define BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
193 static int cname##_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
195 while(inl>=EVP_MAXCHUNK) \
197 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));\
203 cprefix##_cbc_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_encrypting(ctx));\
207 #define BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
208 static int cname##_cfb##cbits##_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
210 size_t chunk = EVP_MAXCHUNK;\
211 if (cbits == 1) chunk >>= 3;\
212 if (inl < chunk) chunk = inl;\
213 while (inl && inl >= chunk)\
215 int num = EVP_CIPHER_CTX_num(ctx);\
216 cprefix##_cfb##cbits##_encrypt(in, out, (long) \
218 && !EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS) \
219 ? chunk*8 : chunk), \
220 &EVP_C_DATA(kstruct, ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx),\
221 &num, EVP_CIPHER_CTX_encrypting(ctx));\
222 EVP_CIPHER_CTX_set_num(ctx, num);\
226 if (inl < chunk) chunk = inl;\
231 #define BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
232 BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
233 BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
234 BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
235 BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched)
237 #define BLOCK_CIPHER_def1(cname, nmode, mode, MODE, kstruct, nid, block_size, \
238 key_len, iv_len, flags, init_key, cleanup, \
239 set_asn1, get_asn1, ctrl) \
240 static const EVP_CIPHER cname##_##mode = { \
241 nid##_##nmode, block_size, key_len, iv_len, \
242 flags | EVP_CIPH_##MODE##_MODE, \
244 cname##_##mode##_cipher, \
251 const EVP_CIPHER *EVP_##cname##_##mode(void) { return &cname##_##mode; }
253 #define BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, \
254 iv_len, flags, init_key, cleanup, set_asn1, \
256 BLOCK_CIPHER_def1(cname, cbc, cbc, CBC, kstruct, nid, block_size, key_len, \
257 iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
259 #define BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, \
260 iv_len, cbits, flags, init_key, cleanup, \
261 set_asn1, get_asn1, ctrl) \
262 BLOCK_CIPHER_def1(cname, cfb##cbits, cfb##cbits, CFB, kstruct, nid, 1, \
263 key_len, iv_len, flags, init_key, cleanup, set_asn1, \
266 #define BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, \
267 iv_len, cbits, flags, init_key, cleanup, \
268 set_asn1, get_asn1, ctrl) \
269 BLOCK_CIPHER_def1(cname, ofb##cbits, ofb, OFB, kstruct, nid, 1, \
270 key_len, iv_len, flags, init_key, cleanup, set_asn1, \
273 #define BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, \
274 flags, init_key, cleanup, set_asn1, \
276 BLOCK_CIPHER_def1(cname, ecb, ecb, ECB, kstruct, nid, block_size, key_len, \
277 0, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
279 #define BLOCK_CIPHER_defs(cname, kstruct, \
280 nid, block_size, key_len, iv_len, cbits, flags, \
281 init_key, cleanup, set_asn1, get_asn1, ctrl) \
282 BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
283 init_key, cleanup, set_asn1, get_asn1, ctrl) \
284 BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, iv_len, cbits, \
285 flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
286 BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, iv_len, cbits, \
287 flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
288 BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, flags, \
289 init_key, cleanup, set_asn1, get_asn1, ctrl)
292 #define BLOCK_CIPHER_defs(cname, kstruct, \
293 nid, block_size, key_len, iv_len, flags,\
294 init_key, cleanup, set_asn1, get_asn1, ctrl)\
295 static const EVP_CIPHER cname##_cbc = {\
296 nid##_cbc, block_size, key_len, iv_len, \
297 flags | EVP_CIPH_CBC_MODE,\
301 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
302 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
307 const EVP_CIPHER *EVP_##cname##_cbc(void) { return &cname##_cbc; }\
308 static const EVP_CIPHER cname##_cfb = {\
309 nid##_cfb64, 1, key_len, iv_len, \
310 flags | EVP_CIPH_CFB_MODE,\
314 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
315 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
320 const EVP_CIPHER *EVP_##cname##_cfb(void) { return &cname##_cfb; }\
321 static const EVP_CIPHER cname##_ofb = {\
322 nid##_ofb64, 1, key_len, iv_len, \
323 flags | EVP_CIPH_OFB_MODE,\
327 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
328 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
333 const EVP_CIPHER *EVP_##cname##_ofb(void) { return &cname##_ofb; }\
334 static const EVP_CIPHER cname##_ecb = {\
335 nid##_ecb, block_size, key_len, iv_len, \
336 flags | EVP_CIPH_ECB_MODE,\
340 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
341 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
346 const EVP_CIPHER *EVP_##cname##_ecb(void) { return &cname##_ecb; }
349 #define IMPLEMENT_BLOCK_CIPHER(cname, ksched, cprefix, kstruct, nid, \
350 block_size, key_len, iv_len, cbits, \
352 cleanup, set_asn1, get_asn1, ctrl) \
353 BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
354 BLOCK_CIPHER_defs(cname, kstruct, nid, block_size, key_len, iv_len, \
355 cbits, flags, init_key, cleanup, set_asn1, \
358 #define IMPLEMENT_CFBR(cipher,cprefix,kstruct,ksched,keysize,cbits,iv_len,fl) \
359 BLOCK_CIPHER_func_cfb(cipher##_##keysize,cprefix,cbits,kstruct,ksched) \
360 BLOCK_CIPHER_def_cfb(cipher##_##keysize,kstruct, \
361 NID_##cipher##_##keysize, keysize/8, iv_len, cbits, \
362 (fl)|EVP_CIPH_FLAG_DEFAULT_ASN1, \
363 cipher##_init_key, NULL, NULL, NULL, NULL)
366 # ifndef OPENSSL_NO_EC
368 #define X25519_KEYLEN 32
369 #define X448_KEYLEN 56
370 #define ED448_KEYLEN 57
372 #define MAX_KEYLEN ED448_KEYLEN
375 unsigned char pubkey[MAX_KEYLEN];
376 unsigned char *privkey;
382 * Type needs to be a bit field Sub-type needs to be for variations on the
383 * method, as in, can it do arbitrary encryption....
388 CRYPTO_REF_COUNT references;
389 const EVP_PKEY_ASN1_METHOD *ameth;
391 ENGINE *pmeth_engine; /* If not NULL public key ENGINE to use */
394 # ifndef OPENSSL_NO_RSA
395 struct rsa_st *rsa; /* RSA */
397 # ifndef OPENSSL_NO_DSA
398 struct dsa_st *dsa; /* DSA */
400 # ifndef OPENSSL_NO_DH
401 struct dh_st *dh; /* DH */
403 # ifndef OPENSSL_NO_EC
404 struct ec_key_st *ec; /* ECC */
405 ECX_KEY *ecx; /* X25519, X448, Ed25519, Ed448 */
409 STACK_OF(X509_ATTRIBUTE) *attributes; /* [ 0 ] */
414 void openssl_add_all_ciphers_int(void);
415 void openssl_add_all_digests_int(void);
416 void evp_cleanup_int(void);
417 void evp_app_cleanup_int(void);
419 /* Pulling defines out of C source files */
421 #define EVP_RC4_KEY_SIZE 16
422 #ifndef TLS1_1_VERSION
423 # define TLS1_1_VERSION 0x0302