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 } /* EVP_PKEY_METHOD */ ;
75 DEFINE_STACK_OF_CONST(EVP_PKEY_METHOD)
77 void evp_pkey_set_cb_translate(BN_GENCB *cb, EVP_PKEY_CTX *ctx);
79 extern const EVP_PKEY_METHOD cmac_pkey_meth;
80 extern const EVP_PKEY_METHOD dh_pkey_meth;
81 extern const EVP_PKEY_METHOD dhx_pkey_meth;
82 extern const EVP_PKEY_METHOD dsa_pkey_meth;
83 extern const EVP_PKEY_METHOD ec_pkey_meth;
84 extern const EVP_PKEY_METHOD ecx25519_pkey_meth;
85 extern const EVP_PKEY_METHOD hmac_pkey_meth;
86 extern const EVP_PKEY_METHOD rsa_pkey_meth;
87 extern const EVP_PKEY_METHOD rsa_pss_pkey_meth;
88 extern const EVP_PKEY_METHOD tls1_prf_pkey_meth;
89 extern const EVP_PKEY_METHOD hkdf_pkey_meth;
90 extern const EVP_PKEY_METHOD poly1305_pkey_meth;
91 extern const EVP_PKEY_METHOD siphash_pkey_meth;
98 int (*init) (EVP_MD_CTX *ctx);
99 int (*update) (EVP_MD_CTX *ctx, const void *data, size_t count);
100 int (*final) (EVP_MD_CTX *ctx, unsigned char *md);
101 int (*copy) (EVP_MD_CTX *to, const EVP_MD_CTX *from);
102 int (*cleanup) (EVP_MD_CTX *ctx);
104 int ctx_size; /* how big does the ctx->md_data need to be */
105 /* control function */
106 int (*md_ctrl) (EVP_MD_CTX *ctx, int cmd, int p1, void *p2);
109 struct evp_cipher_st {
112 /* Default value for variable length ciphers */
118 int (*init) (EVP_CIPHER_CTX *ctx, const unsigned char *key,
119 const unsigned char *iv, int enc);
120 /* encrypt/decrypt data */
121 int (*do_cipher) (EVP_CIPHER_CTX *ctx, unsigned char *out,
122 const unsigned char *in, size_t inl);
124 int (*cleanup) (EVP_CIPHER_CTX *);
125 /* how big ctx->cipher_data needs to be */
127 /* Populate a ASN1_TYPE with parameters */
128 int (*set_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
129 /* Get parameters from a ASN1_TYPE */
130 int (*get_asn1_parameters) (EVP_CIPHER_CTX *, ASN1_TYPE *);
131 /* Miscellaneous operations */
132 int (*ctrl) (EVP_CIPHER_CTX *, int type, int arg, void *ptr);
133 /* Application data */
137 /* Macros to code block cipher wrappers */
139 /* Wrapper functions for each cipher mode */
141 #define EVP_C_DATA(kstruct, ctx) \
142 ((kstruct *)EVP_CIPHER_CTX_get_cipher_data(ctx))
144 #define BLOCK_CIPHER_ecb_loop() \
146 bl = EVP_CIPHER_CTX_cipher(ctx)->block_size; \
147 if (inl < bl) return 1;\
149 for (i=0; i <= inl; i+=bl)
151 #define BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
152 static int cname##_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
154 BLOCK_CIPHER_ecb_loop() \
155 cprefix##_ecb_encrypt(in + i, out + i, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_encrypting(ctx)); \
159 #define EVP_MAXCHUNK ((size_t)1<<(sizeof(long)*8-2))
161 #define BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched) \
162 static int cname##_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
164 while(inl>=EVP_MAXCHUNK) {\
165 int num = EVP_CIPHER_CTX_num(ctx);\
166 cprefix##_ofb##cbits##_encrypt(in, out, (long)EVP_MAXCHUNK, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), &num); \
167 EVP_CIPHER_CTX_set_num(ctx, num);\
173 int num = EVP_CIPHER_CTX_num(ctx);\
174 cprefix##_ofb##cbits##_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), &num); \
175 EVP_CIPHER_CTX_set_num(ctx, num);\
180 #define BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
181 static int cname##_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
183 while(inl>=EVP_MAXCHUNK) \
185 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));\
191 cprefix##_cbc_encrypt(in, out, (long)inl, &EVP_C_DATA(kstruct,ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_encrypting(ctx));\
195 #define BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
196 static int cname##_cfb##cbits##_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
198 size_t chunk = EVP_MAXCHUNK;\
199 if (cbits == 1) chunk >>= 3;\
200 if (inl < chunk) chunk = inl;\
201 while (inl && inl >= chunk)\
203 int num = EVP_CIPHER_CTX_num(ctx);\
204 cprefix##_cfb##cbits##_encrypt(in, out, (long) \
206 && !EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS) \
208 &EVP_C_DATA(kstruct, ctx)->ksched, EVP_CIPHER_CTX_iv_noconst(ctx),\
209 &num, EVP_CIPHER_CTX_encrypting(ctx));\
210 EVP_CIPHER_CTX_set_num(ctx, num);\
214 if (inl < chunk) chunk = inl;\
219 #define BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
220 BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
221 BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
222 BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
223 BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched)
225 #define BLOCK_CIPHER_def1(cname, nmode, mode, MODE, kstruct, nid, block_size, \
226 key_len, iv_len, flags, init_key, cleanup, \
227 set_asn1, get_asn1, ctrl) \
228 static const EVP_CIPHER cname##_##mode = { \
229 nid##_##nmode, block_size, key_len, iv_len, \
230 flags | EVP_CIPH_##MODE##_MODE, \
232 cname##_##mode##_cipher, \
239 const EVP_CIPHER *EVP_##cname##_##mode(void) { return &cname##_##mode; }
241 #define BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, \
242 iv_len, flags, init_key, cleanup, set_asn1, \
244 BLOCK_CIPHER_def1(cname, cbc, cbc, CBC, kstruct, nid, block_size, key_len, \
245 iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
247 #define BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, \
248 iv_len, cbits, flags, init_key, cleanup, \
249 set_asn1, get_asn1, ctrl) \
250 BLOCK_CIPHER_def1(cname, cfb##cbits, cfb##cbits, CFB, kstruct, nid, 1, \
251 key_len, iv_len, flags, init_key, cleanup, set_asn1, \
254 #define BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, \
255 iv_len, cbits, flags, init_key, cleanup, \
256 set_asn1, get_asn1, ctrl) \
257 BLOCK_CIPHER_def1(cname, ofb##cbits, ofb, OFB, kstruct, nid, 1, \
258 key_len, iv_len, flags, init_key, cleanup, set_asn1, \
261 #define BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, \
262 flags, init_key, cleanup, set_asn1, \
264 BLOCK_CIPHER_def1(cname, ecb, ecb, ECB, kstruct, nid, block_size, key_len, \
265 0, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
267 #define BLOCK_CIPHER_defs(cname, kstruct, \
268 nid, block_size, key_len, iv_len, cbits, flags, \
269 init_key, cleanup, set_asn1, get_asn1, ctrl) \
270 BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
271 init_key, cleanup, set_asn1, get_asn1, ctrl) \
272 BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, iv_len, cbits, \
273 flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
274 BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, iv_len, cbits, \
275 flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
276 BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, flags, \
277 init_key, cleanup, set_asn1, get_asn1, ctrl)
280 #define BLOCK_CIPHER_defs(cname, kstruct, \
281 nid, block_size, key_len, iv_len, flags,\
282 init_key, cleanup, set_asn1, get_asn1, ctrl)\
283 static const EVP_CIPHER cname##_cbc = {\
284 nid##_cbc, block_size, key_len, iv_len, \
285 flags | EVP_CIPH_CBC_MODE,\
289 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
290 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
295 const EVP_CIPHER *EVP_##cname##_cbc(void) { return &cname##_cbc; }\
296 static const EVP_CIPHER cname##_cfb = {\
297 nid##_cfb64, 1, key_len, iv_len, \
298 flags | EVP_CIPH_CFB_MODE,\
302 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
303 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
308 const EVP_CIPHER *EVP_##cname##_cfb(void) { return &cname##_cfb; }\
309 static const EVP_CIPHER cname##_ofb = {\
310 nid##_ofb64, 1, key_len, iv_len, \
311 flags | EVP_CIPH_OFB_MODE,\
315 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
316 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
321 const EVP_CIPHER *EVP_##cname##_ofb(void) { return &cname##_ofb; }\
322 static const EVP_CIPHER cname##_ecb = {\
323 nid##_ecb, block_size, key_len, iv_len, \
324 flags | EVP_CIPH_ECB_MODE,\
328 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
329 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
334 const EVP_CIPHER *EVP_##cname##_ecb(void) { return &cname##_ecb; }
337 #define IMPLEMENT_BLOCK_CIPHER(cname, ksched, cprefix, kstruct, nid, \
338 block_size, key_len, iv_len, cbits, \
340 cleanup, set_asn1, get_asn1, ctrl) \
341 BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
342 BLOCK_CIPHER_defs(cname, kstruct, nid, block_size, key_len, iv_len, \
343 cbits, flags, init_key, cleanup, set_asn1, \
346 #define IMPLEMENT_CFBR(cipher,cprefix,kstruct,ksched,keysize,cbits,iv_len,fl) \
347 BLOCK_CIPHER_func_cfb(cipher##_##keysize,cprefix,cbits,kstruct,ksched) \
348 BLOCK_CIPHER_def_cfb(cipher##_##keysize,kstruct, \
349 NID_##cipher##_##keysize, keysize/8, iv_len, cbits, \
350 (fl)|EVP_CIPH_FLAG_DEFAULT_ASN1, \
351 cipher##_init_key, NULL, NULL, NULL, NULL)
355 * Type needs to be a bit field Sub-type needs to be for variations on the
356 * method, as in, can it do arbitrary encryption....
361 CRYPTO_REF_COUNT references;
362 const EVP_PKEY_ASN1_METHOD *ameth;
366 # ifndef OPENSSL_NO_RSA
367 struct rsa_st *rsa; /* RSA */
369 # ifndef OPENSSL_NO_DSA
370 struct dsa_st *dsa; /* DSA */
372 # ifndef OPENSSL_NO_DH
373 struct dh_st *dh; /* DH */
375 # ifndef OPENSSL_NO_EC
376 struct ec_key_st *ec; /* ECC */
380 STACK_OF(X509_ATTRIBUTE) *attributes; /* [ 0 ] */
385 void openssl_add_all_ciphers_int(void);
386 void openssl_add_all_digests_int(void);
387 void evp_cleanup_int(void);
389 /* Pulling defines out of C soure files */
391 #define EVP_RC4_KEY_SIZE 16
392 #ifndef TLS1_1_VERSION
393 # define TLS1_1_VERSION 0x0302