3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
6 /* ====================================================================
7 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
21 * 3. All advertising materials mentioning features or use of this
22 * software must display the following acknowledgment:
23 * "This product includes software developed by the OpenSSL Project
24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 * endorse or promote products derived from this software without
28 * prior written permission. For written permission, please contact
29 * licensing@OpenSSL.org.
31 * 5. Products derived from this software may not be called "OpenSSL"
32 * nor may "OpenSSL" appear in their names without prior written
33 * permission of the OpenSSL Project.
35 * 6. Redistributions of any form whatsoever must retain the following
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
54 * This product includes cryptographic software written by Eric Young
55 * (eay@cryptsoft.com). This product includes software written by Tim
56 * Hudson (tjh@cryptsoft.com).
60 /* EVP_MD_CTX related stuff */
62 struct evp_md_ctx_st {
64 ENGINE *engine; /* functional reference if 'digest' is
68 /* Public key context for sign/verify */
70 /* Update function: usually copied from EVP_MD */
71 int (*update) (EVP_MD_CTX *ctx, const void *data, size_t count);
74 struct evp_cipher_ctx_st {
75 const EVP_CIPHER *cipher;
76 ENGINE *engine; /* functional reference if 'cipher' is
78 int encrypt; /* encrypt or decrypt */
79 int buf_len; /* number we have left */
80 unsigned char oiv[EVP_MAX_IV_LENGTH]; /* original iv */
81 unsigned char iv[EVP_MAX_IV_LENGTH]; /* working iv */
82 unsigned char buf[EVP_MAX_BLOCK_LENGTH]; /* saved partial block */
83 int num; /* used by cfb/ofb/ctr mode */
84 /* FIXME: Should this even exist? It appears unused */
85 void *app_data; /* application stuff */
86 int key_len; /* May change for variable length cipher */
87 unsigned long flags; /* Various flags */
88 void *cipher_data; /* per EVP data */
91 unsigned char final[EVP_MAX_BLOCK_LENGTH]; /* possible final block */
92 } /* EVP_CIPHER_CTX */ ;
94 /* Macros to code block cipher wrappers */
96 /* Wrapper functions for each cipher mode */
98 #define BLOCK_CIPHER_ecb_loop() \
100 bl = ctx->cipher->block_size;\
101 if(inl < bl) return 1;\
103 for(i=0; i <= inl; i+=bl)
105 #define BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
106 static int cname##_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
108 BLOCK_CIPHER_ecb_loop() \
109 cprefix##_ecb_encrypt(in + i, out + i, &((kstruct *)ctx->cipher_data)->ksched, ctx->encrypt);\
113 #define EVP_MAXCHUNK ((size_t)1<<(sizeof(long)*8-2))
115 #define BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched) \
116 static int cname##_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
118 while(inl>=EVP_MAXCHUNK)\
120 cprefix##_ofb##cbits##_encrypt(in, out, (long)EVP_MAXCHUNK, &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, &ctx->num);\
126 cprefix##_ofb##cbits##_encrypt(in, out, (long)inl, &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, &ctx->num);\
130 #define BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
131 static int cname##_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
133 while(inl>=EVP_MAXCHUNK) \
135 cprefix##_cbc_encrypt(in, out, (long)EVP_MAXCHUNK, &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, ctx->encrypt);\
141 cprefix##_cbc_encrypt(in, out, (long)inl, &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, ctx->encrypt);\
145 #define BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
146 static int cname##_cfb##cbits##_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
148 size_t chunk=EVP_MAXCHUNK;\
149 if (cbits==1) chunk>>=3;\
150 if (inl<chunk) chunk=inl;\
151 while(inl && inl>=chunk)\
153 cprefix##_cfb##cbits##_encrypt(in, out, (long)((cbits==1) && !(ctx->flags & EVP_CIPH_FLAG_LENGTH_BITS) ?inl*8:inl), &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, &ctx->num, ctx->encrypt);\
157 if(inl<chunk) chunk=inl;\
162 #define BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
163 BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
164 BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
165 BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
166 BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched)
168 #define BLOCK_CIPHER_def1(cname, nmode, mode, MODE, kstruct, nid, block_size, \
169 key_len, iv_len, flags, init_key, cleanup, \
170 set_asn1, get_asn1, ctrl) \
171 static const EVP_CIPHER cname##_##mode = { \
172 nid##_##nmode, block_size, key_len, iv_len, \
173 flags | EVP_CIPH_##MODE##_MODE, \
175 cname##_##mode##_cipher, \
182 const EVP_CIPHER *EVP_##cname##_##mode(void) { return &cname##_##mode; }
184 #define BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, \
185 iv_len, flags, init_key, cleanup, set_asn1, \
187 BLOCK_CIPHER_def1(cname, cbc, cbc, CBC, kstruct, nid, block_size, key_len, \
188 iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
190 #define BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, \
191 iv_len, cbits, flags, init_key, cleanup, \
192 set_asn1, get_asn1, ctrl) \
193 BLOCK_CIPHER_def1(cname, cfb##cbits, cfb##cbits, CFB, kstruct, nid, 1, \
194 key_len, iv_len, flags, init_key, cleanup, set_asn1, \
197 #define BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, \
198 iv_len, cbits, flags, init_key, cleanup, \
199 set_asn1, get_asn1, ctrl) \
200 BLOCK_CIPHER_def1(cname, ofb##cbits, ofb, OFB, kstruct, nid, 1, \
201 key_len, iv_len, flags, init_key, cleanup, set_asn1, \
204 #define BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, \
205 flags, init_key, cleanup, set_asn1, \
207 BLOCK_CIPHER_def1(cname, ecb, ecb, ECB, kstruct, nid, block_size, key_len, \
208 0, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
210 #define BLOCK_CIPHER_defs(cname, kstruct, \
211 nid, block_size, key_len, iv_len, cbits, flags, \
212 init_key, cleanup, set_asn1, get_asn1, ctrl) \
213 BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
214 init_key, cleanup, set_asn1, get_asn1, ctrl) \
215 BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, iv_len, cbits, \
216 flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
217 BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, iv_len, cbits, \
218 flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
219 BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, flags, \
220 init_key, cleanup, set_asn1, get_asn1, ctrl)
223 #define BLOCK_CIPHER_defs(cname, kstruct, \
224 nid, block_size, key_len, iv_len, flags,\
225 init_key, cleanup, set_asn1, get_asn1, ctrl)\
226 static const EVP_CIPHER cname##_cbc = {\
227 nid##_cbc, block_size, key_len, iv_len, \
228 flags | EVP_CIPH_CBC_MODE,\
232 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
233 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
238 const EVP_CIPHER *EVP_##cname##_cbc(void) { return &cname##_cbc; }\
239 static const EVP_CIPHER cname##_cfb = {\
240 nid##_cfb64, 1, key_len, iv_len, \
241 flags | EVP_CIPH_CFB_MODE,\
245 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
246 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
251 const EVP_CIPHER *EVP_##cname##_cfb(void) { return &cname##_cfb; }\
252 static const EVP_CIPHER cname##_ofb = {\
253 nid##_ofb64, 1, key_len, iv_len, \
254 flags | EVP_CIPH_OFB_MODE,\
258 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
259 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
264 const EVP_CIPHER *EVP_##cname##_ofb(void) { return &cname##_ofb; }\
265 static const EVP_CIPHER cname##_ecb = {\
266 nid##_ecb, block_size, key_len, iv_len, \
267 flags | EVP_CIPH_ECB_MODE,\
271 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
272 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
277 const EVP_CIPHER *EVP_##cname##_ecb(void) { return &cname##_ecb; }
280 #define IMPLEMENT_BLOCK_CIPHER(cname, ksched, cprefix, kstruct, nid, \
281 block_size, key_len, iv_len, cbits, \
283 cleanup, set_asn1, get_asn1, ctrl) \
284 BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
285 BLOCK_CIPHER_defs(cname, kstruct, nid, block_size, key_len, iv_len, \
286 cbits, flags, init_key, cleanup, set_asn1, \
289 #define EVP_C_DATA(kstruct, ctx) ((kstruct *)(ctx)->cipher_data)
291 #define IMPLEMENT_CFBR(cipher,cprefix,kstruct,ksched,keysize,cbits,iv_len,fl) \
292 BLOCK_CIPHER_func_cfb(cipher##_##keysize,cprefix,cbits,kstruct,ksched) \
293 BLOCK_CIPHER_def_cfb(cipher##_##keysize,kstruct, \
294 NID_##cipher##_##keysize, keysize/8, iv_len, cbits, \
295 (fl)|EVP_CIPH_FLAG_DEFAULT_ASN1, \
296 cipher##_init_key, NULL, NULL, NULL, NULL)
298 int PKCS5_v2_PBKDF2_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass,
299 int passlen, ASN1_TYPE *param,
300 const EVP_CIPHER *c, const EVP_MD *md,
303 struct evp_Encode_Ctx_st {
304 /* number saved in a partial encode/decode */
307 * The length is either the output line length (in input bytes) or the
308 * shortest input line length that is ok. Once decoding begins, the
309 * length is adjusted up each time a longer line is decoded
313 unsigned char enc_data[80];
314 /* number read on current line */
319 typedef struct evp_pbe_st EVP_PBE_CTL;
320 DEFINE_STACK_OF(EVP_PBE_CTL)