a6cd870784
deviates from the "standard" 64 bits of feedback that all other algorithms are using. Therefore, let's redo certain EVP macros to accept different amounts of feedback bits for these modes. Also, change e_aes.c to provide all usually available modes for AES. CTR isn't included yet.
227 lines
8.9 KiB
C
227 lines
8.9 KiB
C
/* evp_locl.h */
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/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
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* project 2000.
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*/
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/* ====================================================================
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* Copyright (c) 1999 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* licensing@OpenSSL.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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/* Macros to code block cipher wrappers */
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/* Wrapper functions for each cipher mode */
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#define BLOCK_CIPHER_ecb_loop() \
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unsigned int i, bl; \
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bl = ctx->cipher->block_size;\
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if(inl < bl) return 1;\
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inl -= bl; \
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for(i=0; i <= inl; i+=bl) \
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#define BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
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static int cname##_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, unsigned int inl) \
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{\
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BLOCK_CIPHER_ecb_loop() \
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cprefix##_ecb_encrypt(in + i, out + i, &((kstruct *)ctx->cipher_data)->ksched, ctx->encrypt);\
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return 1;\
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}
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#define BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched) \
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static int cname##_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, unsigned int inl) \
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{\
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cprefix##_ofb##cbits##_encrypt(in, out, (long)inl, &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, &ctx->num);\
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return 1;\
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}
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#define BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
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static int cname##_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, unsigned int inl) \
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{\
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cprefix##_cbc_encrypt(in, out, (long)inl, &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, ctx->encrypt);\
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return 1;\
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}
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#define BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
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static int cname##_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, unsigned int inl) \
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{\
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cprefix##_cfb##cbits##_encrypt(in, out, (long)inl, &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, &ctx->num, ctx->encrypt);\
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return 1;\
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}
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#define BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
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BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
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BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
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BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
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BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched)
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#define BLOCK_CIPHER_def1(cname, nmode, mode, MODE, kstruct, nid, block_size, \
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key_len, iv_len, flags, init_key, cleanup, \
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set_asn1, get_asn1, ctrl) \
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static const EVP_CIPHER cname##_##mode = { \
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nid##_##nmode, block_size, key_len, iv_len, \
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flags | EVP_CIPH_##MODE##_MODE, \
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init_key, \
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cname##_##mode##_cipher, \
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cleanup, \
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sizeof(kstruct), \
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set_asn1, get_asn1,\
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ctrl, \
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NULL \
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}; \
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const EVP_CIPHER *EVP_##cname##_##mode(void) { return &cname##_##mode; }
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#define BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, \
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iv_len, flags, init_key, cleanup, set_asn1, \
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get_asn1, ctrl) \
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BLOCK_CIPHER_def1(cname, cbc, cbc, CBC, kstruct, nid, block_size, key_len, \
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iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
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#define BLOCK_CIPHER_def_cfb(cname, kstruct, nid, block_size, key_len, \
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iv_len, cbits, flags, init_key, cleanup, \
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set_asn1, get_asn1, ctrl) \
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BLOCK_CIPHER_def1(cname, cfb##cbits, cfb, CFB, kstruct, nid, block_size, \
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key_len, iv_len, flags, init_key, cleanup, set_asn1, \
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get_asn1, ctrl)
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#define BLOCK_CIPHER_def_ofb(cname, kstruct, nid, block_size, key_len, \
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iv_len, cbits, flags, init_key, cleanup, \
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set_asn1, get_asn1, ctrl) \
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BLOCK_CIPHER_def1(cname, ofb##cbits, ofb, OFB, kstruct, nid, block_size, \
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key_len, iv_len, flags, init_key, cleanup, set_asn1, \
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get_asn1, ctrl)
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#define BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, \
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iv_len, flags, init_key, cleanup, set_asn1, \
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get_asn1, ctrl) \
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BLOCK_CIPHER_def1(cname, ecb, ecb, ECB, kstruct, nid, block_size, key_len, \
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iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
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#define BLOCK_CIPHER_defs(cname, kstruct, \
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nid, block_size, key_len, iv_len, cbits, flags, \
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init_key, cleanup, set_asn1, get_asn1, ctrl) \
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BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
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init_key, cleanup, set_asn1, get_asn1, ctrl) \
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BLOCK_CIPHER_def_cfb(cname, kstruct, nid, block_size, key_len, iv_len, cbits, \
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flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
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BLOCK_CIPHER_def_ofb(cname, kstruct, nid, block_size, key_len, iv_len, cbits, \
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flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
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BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
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init_key, cleanup, set_asn1, get_asn1, ctrl)
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/*
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#define BLOCK_CIPHER_defs(cname, kstruct, \
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nid, block_size, key_len, iv_len, flags,\
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init_key, cleanup, set_asn1, get_asn1, ctrl)\
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static const EVP_CIPHER cname##_cbc = {\
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nid##_cbc, block_size, key_len, iv_len, \
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flags | EVP_CIPH_CBC_MODE,\
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init_key,\
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cname##_cbc_cipher,\
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cleanup,\
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sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
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sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
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set_asn1, get_asn1,\
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ctrl, \
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NULL \
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};\
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const EVP_CIPHER *EVP_##cname##_cbc(void) { return &cname##_cbc; }\
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static const EVP_CIPHER cname##_cfb = {\
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nid##_cfb64, 1, key_len, iv_len, \
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flags | EVP_CIPH_CFB_MODE,\
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init_key,\
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cname##_cfb_cipher,\
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cleanup,\
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sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
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sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
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set_asn1, get_asn1,\
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ctrl,\
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NULL \
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};\
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const EVP_CIPHER *EVP_##cname##_cfb(void) { return &cname##_cfb; }\
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static const EVP_CIPHER cname##_ofb = {\
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nid##_ofb64, 1, key_len, iv_len, \
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flags | EVP_CIPH_OFB_MODE,\
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init_key,\
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cname##_ofb_cipher,\
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cleanup,\
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sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
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sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
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set_asn1, get_asn1,\
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ctrl,\
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NULL \
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};\
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const EVP_CIPHER *EVP_##cname##_ofb(void) { return &cname##_ofb; }\
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static const EVP_CIPHER cname##_ecb = {\
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nid##_ecb, block_size, key_len, iv_len, \
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flags | EVP_CIPH_ECB_MODE,\
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init_key,\
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cname##_ecb_cipher,\
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cleanup,\
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sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
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sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
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set_asn1, get_asn1,\
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ctrl,\
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NULL \
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};\
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const EVP_CIPHER *EVP_##cname##_ecb(void) { return &cname##_ecb; }
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*/
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#define IMPLEMENT_BLOCK_CIPHER(cname, ksched, cprefix, kstruct, nid, \
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block_size, key_len, iv_len, cbits, \
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flags, init_key, \
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cleanup, set_asn1, get_asn1, ctrl) \
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BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
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BLOCK_CIPHER_defs(cname, kstruct, nid, block_size, key_len, iv_len, \
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cbits, flags, init_key, cleanup, set_asn1, \
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get_asn1, ctrl)
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#define EVP_C_DATA(kstruct, ctx) ((kstruct *)(ctx)->cipher_data)
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