2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
59 /* Macros to code block cipher wrappers */
61 /* Wrapper functions for each cipher mode */
63 #define BLOCK_CIPHER_ecb_loop() \
65 if(inl < 8) return 1;\
67 for(i=0; i <= inl; i+=8) \
69 #define BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
70 static int cname##_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, unsigned int inl) \
72 BLOCK_CIPHER_ecb_loop() \
73 cprefix##_ecb_encrypt(in + i, out + i, &((kstruct *)ctx->cipher_data)->ksched, ctx->encrypt);\
77 #define BLOCK_CIPHER_func_ofb(cname, cprefix, kstruct, ksched) \
78 static int cname##_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, unsigned int inl) \
80 cprefix##_ofb64_encrypt(in, out, (long)inl, &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, &ctx->num);\
84 #define BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
85 static int cname##_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, unsigned int inl) \
87 cprefix##_cbc_encrypt(in, out, (long)inl, &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, ctx->encrypt);\
91 #define BLOCK_CIPHER_func_cfb(cname, cprefix, kstruct, ksched) \
92 static int cname##_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, unsigned int inl) \
94 cprefix##_cfb64_encrypt(in, out, (long)inl, &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, &ctx->num, ctx->encrypt);\
98 #define BLOCK_CIPHER_all_funcs(cname, cprefix, kstruct, ksched) \
99 BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
100 BLOCK_CIPHER_func_cfb(cname, cprefix, kstruct, ksched) \
101 BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
102 BLOCK_CIPHER_func_ofb(cname, cprefix, kstruct, ksched)
104 #define BLOCK_CIPHER_def1(cname, nmode, mode, MODE, kstruct, nid, block_size, \
105 key_len, iv_len, flags, init_key, cleanup, \
106 set_asn1, get_asn1, ctrl) \
107 static const EVP_CIPHER cname##_##mode = { \
108 nid##_##nmode, block_size, key_len, iv_len, \
109 flags | EVP_CIPH_##MODE##_MODE, \
111 cname##_##mode##_cipher, \
118 const EVP_CIPHER *EVP_##cname##_##mode(void) { return &cname##_##mode; }
120 #define BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, \
121 iv_len, flags, init_key, cleanup, set_asn1, \
123 BLOCK_CIPHER_def1(cname, cbc, cbc, CBC, kstruct, nid, block_size, key_len, \
124 iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
126 #define BLOCK_CIPHER_def_cfb(cname, kstruct, nid, block_size, key_len, \
127 iv_len, flags, init_key, cleanup, set_asn1, \
129 BLOCK_CIPHER_def1(cname, cfb64, cfb, CFB, kstruct, nid, block_size, key_len, \
130 iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
132 #define BLOCK_CIPHER_def_ofb(cname, kstruct, nid, block_size, key_len, \
133 iv_len, flags, init_key, cleanup, set_asn1, \
135 BLOCK_CIPHER_def1(cname, ofb64, ofb, OFB, kstruct, nid, block_size, key_len, \
136 iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
138 #define BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, \
139 iv_len, flags, init_key, cleanup, set_asn1, \
141 BLOCK_CIPHER_def1(cname, ecb, ecb, ECB, kstruct, nid, block_size, key_len, \
142 iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
144 #define BLOCK_CIPHER_defs(cname, kstruct, \
145 nid, block_size, key_len, iv_len, flags, \
146 init_key, cleanup, set_asn1, get_asn1, ctrl) \
147 BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
148 init_key, cleanup, set_asn1, get_asn1, ctrl) \
149 BLOCK_CIPHER_def_cfb(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
150 init_key, cleanup, set_asn1, get_asn1, ctrl) \
151 BLOCK_CIPHER_def_ofb(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
152 init_key, cleanup, set_asn1, get_asn1, ctrl) \
153 BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
154 init_key, cleanup, set_asn1, get_asn1, ctrl)
158 #define BLOCK_CIPHER_defs(cname, kstruct, \
159 nid, block_size, key_len, iv_len, flags,\
160 init_key, cleanup, set_asn1, get_asn1, ctrl)\
161 static const EVP_CIPHER cname##_cbc = {\
162 nid##_cbc, block_size, key_len, iv_len, \
163 flags | EVP_CIPH_CBC_MODE,\
167 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
168 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
173 const EVP_CIPHER *EVP_##cname##_cbc(void) { return &cname##_cbc; }\
174 static const EVP_CIPHER cname##_cfb = {\
175 nid##_cfb64, 1, key_len, iv_len, \
176 flags | EVP_CIPH_CFB_MODE,\
180 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
181 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
186 const EVP_CIPHER *EVP_##cname##_cfb(void) { return &cname##_cfb; }\
187 static const EVP_CIPHER cname##_ofb = {\
188 nid##_ofb64, 1, key_len, iv_len, \
189 flags | EVP_CIPH_OFB_MODE,\
193 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
194 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
199 const EVP_CIPHER *EVP_##cname##_ofb(void) { return &cname##_ofb; }\
200 static const EVP_CIPHER cname##_ecb = {\
201 nid##_ecb, block_size, key_len, iv_len, \
202 flags | EVP_CIPH_ECB_MODE,\
206 sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
207 sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
212 const EVP_CIPHER *EVP_##cname##_ecb(void) { return &cname##_ecb; }
215 #define IMPLEMENT_BLOCK_CIPHER(cname, ksched, cprefix, kstruct, nid, \
216 block_size, key_len, iv_len, flags, init_key, \
217 cleanup, set_asn1, get_asn1, ctrl) \
218 BLOCK_CIPHER_all_funcs(cname, cprefix, kstruct, ksched) \
219 BLOCK_CIPHER_defs(cname, kstruct, nid, block_size, key_len, iv_len, \
220 flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
222 #define EVP_C_DATA(kstruct, ctx) ((kstruct *)(ctx)->cipher_data)