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Fourth phase EVP revision.
Declare ciphers in terms of macros. This reduces the amount of code and places each block cipher EVP definition in a single file instead of being spread over 4 files.
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Dr. Stephen Henson
parent
57ae2e2428
commit
5da2f69f41
168
crypto/evp/evp_locl.h
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168
crypto/evp/evp_locl.h
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/* 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; \
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if(inl < 8) return 1;\
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inl -= 8; \
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for(i=0; i <= inl; i+=8) \
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#define BLOCK_CIPHER_func_ecb(cname, cprefix, kname) \
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static int cname##_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, 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, &ctx->c.##kname, ctx->encrypt);\
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return 1;\
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}
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#define BLOCK_CIPHER_func_ofb(cname, cprefix, kname) \
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static int cname##_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, unsigned char *in, unsigned int inl) \
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{\
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cprefix##_ofb64_encrypt(in, out, (long)inl, &ctx->c.##kname, 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, kname) \
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static int cname##_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, unsigned char *in, unsigned int inl) \
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{\
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cprefix##_cbc_encrypt(in, out, (long)inl, &ctx->c.##kname, 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, kname) \
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static int cname##_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, unsigned char *in, unsigned int inl) \
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{\
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cprefix##_cfb64_encrypt(in, out, (long)inl, &ctx->c.##kname, 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, kname) \
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BLOCK_CIPHER_func_cbc(cname, cprefix, kname) \
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BLOCK_CIPHER_func_cfb(cname, cprefix, kname) \
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BLOCK_CIPHER_func_ecb(cname, cprefix, kname) \
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BLOCK_CIPHER_func_ofb(cname, cprefix, kname)
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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 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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EVP_CIPHER *EVP_##cname##_cbc(void) { return &cname##_cbc; }\
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static 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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EVP_CIPHER *EVP_##cname##_cfb(void) { return &cname##_cfb; }\
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static 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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EVP_CIPHER *EVP_##cname##_ofb(void) { return &cname##_ofb; }\
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static 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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EVP_CIPHER *EVP_##cname##_ecb(void) { return &cname##_ecb; }
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#define IMPLEMENT_BLOCK_CIPHER(cname, kname, cprefix, 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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BLOCK_CIPHER_all_funcs(cname, cprefix, kname) \
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BLOCK_CIPHER_defs(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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