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_cipher_data(const EVP_CIPHER_CTX
*ctx
)
261 return ctx
->cipher_data
;
264 int EVP_CIPHER_iv_length(const EVP_CIPHER
*cipher
)
266 return cipher
->iv_len
;
269 int EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX
*ctx
)
271 return ctx
->cipher
->iv_len
;
274 const unsigned char *EVP_CIPHER_CTX_original_iv(const EVP_CIPHER_CTX
*ctx
)
279 const unsigned char *EVP_CIPHER_CTX_iv(const EVP_CIPHER_CTX
*ctx
)
284 unsigned char *EVP_CIPHER_CTX_iv_noconst(EVP_CIPHER_CTX
*ctx
)
289 unsigned char *EVP_CIPHER_CTX_buf_noconst(EVP_CIPHER_CTX
*ctx
)
294 int EVP_CIPHER_CTX_num(const EVP_CIPHER_CTX
*ctx
)
299 void EVP_CIPHER_CTX_set_num(EVP_CIPHER_CTX
*ctx
, int num
)
304 int EVP_CIPHER_key_length(const EVP_CIPHER
*cipher
)
306 return cipher
->key_len
;
309 int EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX
*ctx
)
314 int EVP_CIPHER_nid(const EVP_CIPHER
*cipher
)
319 int EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX
*ctx
)
321 return ctx
->cipher
->nid
;
324 int EVP_MD_block_size(const EVP_MD
*md
)
326 return md
->block_size
;
329 int EVP_MD_type(const EVP_MD
*md
)
334 int EVP_MD_pkey_type(const EVP_MD
*md
)
336 return md
->pkey_type
;
339 int EVP_MD_size(const EVP_MD
*md
)
342 EVPerr(EVP_F_EVP_MD_SIZE
, EVP_R_MESSAGE_DIGEST_IS_NULL
);
348 unsigned long EVP_MD_flags(const EVP_MD
*md
)
353 EVP_MD
*EVP_MD_meth_new(int md_type
, int pkey_type
)
355 EVP_MD
*md
= OPENSSL_zalloc(sizeof(*md
));
359 md
->pkey_type
= pkey_type
;
363 EVP_MD
*EVP_MD_meth_dup(const EVP_MD
*md
)
365 EVP_MD
*to
= EVP_MD_meth_new(md
->type
, md
->pkey_type
);
368 memcpy(to
, md
, sizeof(*to
));
371 void EVP_MD_meth_free(EVP_MD
*md
)
375 int EVP_MD_meth_set_input_blocksize(EVP_MD
*md
, int blocksize
)
377 md
->block_size
= blocksize
;
380 int EVP_MD_meth_set_result_size(EVP_MD
*md
, int resultsize
)
382 md
->md_size
= resultsize
;
385 int EVP_MD_meth_set_app_datasize(EVP_MD
*md
, int datasize
)
387 md
->ctx_size
= datasize
;
390 int EVP_MD_meth_set_flags(EVP_MD
*md
, unsigned long flags
)
395 int EVP_MD_meth_set_init(EVP_MD
*md
, int (*init
)(EVP_MD_CTX
*ctx
))
400 int EVP_MD_meth_set_update(EVP_MD
*md
, int (*update
)(EVP_MD_CTX
*ctx
,
407 int EVP_MD_meth_set_final(EVP_MD
*md
, int (*final
)(EVP_MD_CTX
*ctx
,
413 int EVP_MD_meth_set_copy(EVP_MD
*md
, int (*copy
)(EVP_MD_CTX
*to
,
414 const EVP_MD_CTX
*from
))
419 int EVP_MD_meth_set_cleanup(EVP_MD
*md
, int (*cleanup
)(EVP_MD_CTX
*ctx
))
421 md
->cleanup
= cleanup
;
424 int EVP_MD_meth_set_ctrl(EVP_MD
*md
, int (*ctrl
)(EVP_MD_CTX
*ctx
, int cmd
,
431 int EVP_MD_meth_get_input_blocksize(const EVP_MD
*md
)
433 return md
->block_size
;
435 int EVP_MD_meth_get_result_size(const EVP_MD
*md
)
439 int EVP_MD_meth_get_app_datasize(const EVP_MD
*md
)
443 unsigned long EVP_MD_meth_get_flags(const EVP_MD
*md
)
445 return md
->block_size
;
447 int (*EVP_MD_meth_get_init(const EVP_MD
*md
))(EVP_MD_CTX
*ctx
)
451 int (*EVP_MD_meth_get_update(const EVP_MD
*md
))(EVP_MD_CTX
*ctx
,
457 int (*EVP_MD_meth_get_final(const EVP_MD
*md
))(EVP_MD_CTX
*ctx
,
462 int (*EVP_MD_meth_get_copy(const EVP_MD
*md
))(EVP_MD_CTX
*to
,
463 const EVP_MD_CTX
*from
)
467 int (*EVP_MD_meth_get_cleanup(const EVP_MD
*md
))(EVP_MD_CTX
*ctx
)
471 int (*EVP_MD_meth_get_ctrl(const EVP_MD
*md
))(EVP_MD_CTX
*ctx
, int cmd
,
477 const EVP_MD
*EVP_MD_CTX_md(const EVP_MD_CTX
*ctx
)
484 EVP_PKEY_CTX
*EVP_MD_CTX_pkey_ctx(const EVP_MD_CTX
*ctx
)
489 void *EVP_MD_CTX_md_data(const EVP_MD_CTX
*ctx
)
494 int (*EVP_MD_CTX_update_fn(EVP_MD_CTX
*ctx
))(EVP_MD_CTX
*ctx
,
495 const void *data
, size_t count
)
500 void EVP_MD_CTX_set_update_fn(EVP_MD_CTX
*ctx
,
501 int (*update
) (EVP_MD_CTX
*ctx
,
502 const void *data
, size_t count
))
504 ctx
->update
= update
;
507 void EVP_MD_CTX_set_flags(EVP_MD_CTX
*ctx
, int flags
)
512 void EVP_MD_CTX_clear_flags(EVP_MD_CTX
*ctx
, int flags
)
514 ctx
->flags
&= ~flags
;
517 int EVP_MD_CTX_test_flags(const EVP_MD_CTX
*ctx
, int flags
)
519 return (ctx
->flags
& flags
);
522 void EVP_CIPHER_CTX_set_flags(EVP_CIPHER_CTX
*ctx
, int flags
)
527 void EVP_CIPHER_CTX_clear_flags(EVP_CIPHER_CTX
*ctx
, int flags
)
529 ctx
->flags
&= ~flags
;
532 int EVP_CIPHER_CTX_test_flags(const EVP_CIPHER_CTX
*ctx
, int flags
)
534 return (ctx
->flags
& flags
);