1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.]
59 #include "internal/cryptlib.h"
60 #include <openssl/evp.h>
61 #include <openssl/objects.h>
62 #include "internal/evp_int.h"
65 int EVP_CIPHER_param_to_asn1(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
69 if (c->cipher->set_asn1_parameters != NULL)
70 ret = c->cipher->set_asn1_parameters(c, type);
71 else if (c->cipher->flags & EVP_CIPH_FLAG_DEFAULT_ASN1) {
72 switch (EVP_CIPHER_CTX_mode(c)) {
73 case EVP_CIPH_WRAP_MODE:
74 if (EVP_CIPHER_CTX_nid(c) == NID_id_smime_alg_CMS3DESwrap)
75 ASN1_TYPE_set(type, V_ASN1_NULL, NULL);
79 case EVP_CIPH_GCM_MODE:
80 case EVP_CIPH_CCM_MODE:
81 case EVP_CIPH_XTS_MODE:
82 case EVP_CIPH_OCB_MODE:
87 ret = EVP_CIPHER_set_asn1_iv(c, type);
94 int EVP_CIPHER_asn1_to_param(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
98 if (c->cipher->get_asn1_parameters != NULL)
99 ret = c->cipher->get_asn1_parameters(c, type);
100 else if (c->cipher->flags & EVP_CIPH_FLAG_DEFAULT_ASN1) {
101 switch (EVP_CIPHER_CTX_mode(c)) {
103 case EVP_CIPH_WRAP_MODE:
107 case EVP_CIPH_GCM_MODE:
108 case EVP_CIPH_CCM_MODE:
109 case EVP_CIPH_XTS_MODE:
110 case EVP_CIPH_OCB_MODE:
115 ret = EVP_CIPHER_get_asn1_iv(c, type);
123 int EVP_CIPHER_get_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
129 l = EVP_CIPHER_CTX_iv_length(c);
130 OPENSSL_assert(l <= sizeof(c->iv));
131 i = ASN1_TYPE_get_octetstring(type, c->oiv, l);
135 memcpy(c->iv, c->oiv, l);
140 int EVP_CIPHER_set_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
146 j = EVP_CIPHER_CTX_iv_length(c);
147 OPENSSL_assert(j <= sizeof(c->iv));
148 i = ASN1_TYPE_set_octetstring(type, c->oiv, j);
153 /* Convert the various cipher NIDs and dummies to a proper OID NID */
154 int EVP_CIPHER_type(const EVP_CIPHER *ctx)
158 nid = EVP_CIPHER_nid(ctx);
173 case NID_aes_128_cfb128:
174 case NID_aes_128_cfb8:
175 case NID_aes_128_cfb1:
177 return NID_aes_128_cfb128;
179 case NID_aes_192_cfb128:
180 case NID_aes_192_cfb8:
181 case NID_aes_192_cfb1:
183 return NID_aes_192_cfb128;
185 case NID_aes_256_cfb128:
186 case NID_aes_256_cfb8:
187 case NID_aes_256_cfb1:
189 return NID_aes_256_cfb128;
195 return NID_des_cfb64;
197 case NID_des_ede3_cfb64:
198 case NID_des_ede3_cfb8:
199 case NID_des_ede3_cfb1:
201 return NID_des_cfb64;
204 /* Check it has an OID and it is valid */
205 otmp = OBJ_nid2obj(nid);
206 if (OBJ_get0_data(otmp) == NULL)
208 ASN1_OBJECT_free(otmp);
213 int EVP_CIPHER_block_size(const EVP_CIPHER *e)
215 return e->block_size;
218 int EVP_CIPHER_CTX_block_size(const EVP_CIPHER_CTX *ctx)
220 return ctx->cipher->block_size;
223 int EVP_CIPHER_impl_ctx_size(const EVP_CIPHER *e)
228 int EVP_Cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
229 const unsigned char *in, unsigned int inl)
231 return ctx->cipher->do_cipher(ctx, out, in, inl);
234 const EVP_CIPHER *EVP_CIPHER_CTX_cipher(const EVP_CIPHER_CTX *ctx)
239 int EVP_CIPHER_CTX_encrypting(const EVP_CIPHER_CTX *ctx)
244 unsigned long EVP_CIPHER_flags(const EVP_CIPHER *cipher)
246 return cipher->flags;
249 void *EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX *ctx)
251 return ctx->app_data;
254 void EVP_CIPHER_CTX_set_app_data(EVP_CIPHER_CTX *ctx, void *data)
256 ctx->app_data = data;
259 void *EVP_CIPHER_CTX_get_cipher_data(const EVP_CIPHER_CTX *ctx)
261 return ctx->cipher_data;
264 void *EVP_CIPHER_CTX_set_cipher_data(EVP_CIPHER_CTX *ctx, void *cipher_data)
266 void *old_cipher_data;
268 old_cipher_data = ctx->cipher_data;
269 ctx->cipher_data = cipher_data;
271 return old_cipher_data;
274 int EVP_CIPHER_iv_length(const EVP_CIPHER *cipher)
276 return cipher->iv_len;
279 int EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX *ctx)
281 return ctx->cipher->iv_len;
284 const unsigned char *EVP_CIPHER_CTX_original_iv(const EVP_CIPHER_CTX *ctx)
289 const unsigned char *EVP_CIPHER_CTX_iv(const EVP_CIPHER_CTX *ctx)
294 unsigned char *EVP_CIPHER_CTX_iv_noconst(EVP_CIPHER_CTX *ctx)
299 unsigned char *EVP_CIPHER_CTX_buf_noconst(EVP_CIPHER_CTX *ctx)
304 int EVP_CIPHER_CTX_num(const EVP_CIPHER_CTX *ctx)
309 void EVP_CIPHER_CTX_set_num(EVP_CIPHER_CTX *ctx, int num)
314 int EVP_CIPHER_key_length(const EVP_CIPHER *cipher)
316 return cipher->key_len;
319 int EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx)
324 int EVP_CIPHER_nid(const EVP_CIPHER *cipher)
329 int EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX *ctx)
331 return ctx->cipher->nid;
334 int EVP_MD_block_size(const EVP_MD *md)
336 return md->block_size;
339 int EVP_MD_type(const EVP_MD *md)
344 int EVP_MD_pkey_type(const EVP_MD *md)
346 return md->pkey_type;
349 int EVP_MD_size(const EVP_MD *md)
352 EVPerr(EVP_F_EVP_MD_SIZE, EVP_R_MESSAGE_DIGEST_IS_NULL);
358 unsigned long EVP_MD_flags(const EVP_MD *md)
363 EVP_MD *EVP_MD_meth_new(int md_type, int pkey_type)
365 EVP_MD *md = OPENSSL_zalloc(sizeof(*md));
369 md->pkey_type = pkey_type;
373 EVP_MD *EVP_MD_meth_dup(const EVP_MD *md)
375 EVP_MD *to = EVP_MD_meth_new(md->type, md->pkey_type);
378 memcpy(to, md, sizeof(*to));
381 void EVP_MD_meth_free(EVP_MD *md)
385 int EVP_MD_meth_set_input_blocksize(EVP_MD *md, int blocksize)
387 md->block_size = blocksize;
390 int EVP_MD_meth_set_result_size(EVP_MD *md, int resultsize)
392 md->md_size = resultsize;
395 int EVP_MD_meth_set_app_datasize(EVP_MD *md, int datasize)
397 md->ctx_size = datasize;
400 int EVP_MD_meth_set_flags(EVP_MD *md, unsigned long flags)
405 int EVP_MD_meth_set_init(EVP_MD *md, int (*init)(EVP_MD_CTX *ctx))
410 int EVP_MD_meth_set_update(EVP_MD *md, int (*update)(EVP_MD_CTX *ctx,
417 int EVP_MD_meth_set_final(EVP_MD *md, int (*final)(EVP_MD_CTX *ctx,
423 int EVP_MD_meth_set_copy(EVP_MD *md, int (*copy)(EVP_MD_CTX *to,
424 const EVP_MD_CTX *from))
429 int EVP_MD_meth_set_cleanup(EVP_MD *md, int (*cleanup)(EVP_MD_CTX *ctx))
431 md->cleanup = cleanup;
434 int EVP_MD_meth_set_ctrl(EVP_MD *md, int (*ctrl)(EVP_MD_CTX *ctx, int cmd,
441 int EVP_MD_meth_get_input_blocksize(const EVP_MD *md)
443 return md->block_size;
445 int EVP_MD_meth_get_result_size(const EVP_MD *md)
449 int EVP_MD_meth_get_app_datasize(const EVP_MD *md)
453 unsigned long EVP_MD_meth_get_flags(const EVP_MD *md)
455 return md->block_size;
457 int (*EVP_MD_meth_get_init(const EVP_MD *md))(EVP_MD_CTX *ctx)
461 int (*EVP_MD_meth_get_update(const EVP_MD *md))(EVP_MD_CTX *ctx,
467 int (*EVP_MD_meth_get_final(const EVP_MD *md))(EVP_MD_CTX *ctx,
472 int (*EVP_MD_meth_get_copy(const EVP_MD *md))(EVP_MD_CTX *to,
473 const EVP_MD_CTX *from)
477 int (*EVP_MD_meth_get_cleanup(const EVP_MD *md))(EVP_MD_CTX *ctx)
481 int (*EVP_MD_meth_get_ctrl(const EVP_MD *md))(EVP_MD_CTX *ctx, int cmd,
487 const EVP_MD *EVP_MD_CTX_md(const EVP_MD_CTX *ctx)
494 EVP_PKEY_CTX *EVP_MD_CTX_pkey_ctx(const EVP_MD_CTX *ctx)
499 void *EVP_MD_CTX_md_data(const EVP_MD_CTX *ctx)
504 int (*EVP_MD_CTX_update_fn(EVP_MD_CTX *ctx))(EVP_MD_CTX *ctx,
505 const void *data, size_t count)
510 void EVP_MD_CTX_set_update_fn(EVP_MD_CTX *ctx,
511 int (*update) (EVP_MD_CTX *ctx,
512 const void *data, size_t count))
514 ctx->update = update;
517 void EVP_MD_CTX_set_flags(EVP_MD_CTX *ctx, int flags)
522 void EVP_MD_CTX_clear_flags(EVP_MD_CTX *ctx, int flags)
524 ctx->flags &= ~flags;
527 int EVP_MD_CTX_test_flags(const EVP_MD_CTX *ctx, int flags)
529 return (ctx->flags & flags);
532 void EVP_CIPHER_CTX_set_flags(EVP_CIPHER_CTX *ctx, int flags)
537 void EVP_CIPHER_CTX_clear_flags(EVP_CIPHER_CTX *ctx, int flags)
539 ctx->flags &= ~flags;
542 int EVP_CIPHER_CTX_test_flags(const EVP_CIPHER_CTX *ctx, int flags)
544 return (ctx->flags & flags);