/* evp_locl.h */ /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL * project 2000. */ /* ==================================================================== * Copyright (c) 1999 The OpenSSL Project. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. All advertising materials mentioning features or use of this * software must display the following acknowledgment: * "This product includes software developed by the OpenSSL Project * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" * * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to * endorse or promote products derived from this software without * prior written permission. For written permission, please contact * licensing@OpenSSL.org. * * 5. Products derived from this software may not be called "OpenSSL" * nor may "OpenSSL" appear in their names without prior written * permission of the OpenSSL Project. * * 6. Redistributions of any form whatsoever must retain the following * acknowledgment: * "This product includes software developed by the OpenSSL Project * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" * * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * ==================================================================== * * This product includes cryptographic software written by Eric Young * (eay@cryptsoft.com). This product includes software written by Tim * Hudson (tjh@cryptsoft.com). * */ /* Macros to code block cipher wrappers */ /* Wrapper functions for each cipher mode */ #define BLOCK_CIPHER_ecb_loop() \ unsigned int i; \ if(inl < 8) return 1;\ inl -= 8; \ for(i=0; i <= inl; i+=8) \ #define BLOCK_CIPHER_func_ecb(cname, cprefix, kname) \ static int cname##_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, unsigned int inl) \ {\ BLOCK_CIPHER_ecb_loop() \ cprefix##_ecb_encrypt(in + i, out + i, &ctx->c.kname, ctx->encrypt);\ return 1;\ } #define BLOCK_CIPHER_func_ofb(cname, cprefix, kname) \ static int cname##_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, unsigned int inl) \ {\ cprefix##_ofb64_encrypt(in, out, (long)inl, &ctx->c.kname, ctx->iv, &ctx->num);\ return 1;\ } #define BLOCK_CIPHER_func_cbc(cname, cprefix, kname) \ static int cname##_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, unsigned int inl) \ {\ cprefix##_cbc_encrypt(in, out, (long)inl, &ctx->c.kname, ctx->iv, ctx->encrypt);\ return 1;\ } #define BLOCK_CIPHER_func_cfb(cname, cprefix, kname) \ static int cname##_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, unsigned int inl) \ {\ cprefix##_cfb64_encrypt(in, out, (long)inl, &ctx->c.kname, ctx->iv, &ctx->num, ctx->encrypt);\ return 1;\ } #define BLOCK_CIPHER_all_funcs(cname, cprefix, kname) \ BLOCK_CIPHER_func_cbc(cname, cprefix, kname) \ BLOCK_CIPHER_func_cfb(cname, cprefix, kname) \ BLOCK_CIPHER_func_ecb(cname, cprefix, kname) \ BLOCK_CIPHER_func_ofb(cname, cprefix, kname) #define BLOCK_CIPHER_defs(cname, kstruct, \ nid, block_size, key_len, iv_len, flags,\ init_key, cleanup, set_asn1, get_asn1, ctrl)\ static EVP_CIPHER cname##_cbc = {\ nid##_cbc, block_size, key_len, iv_len, \ flags | EVP_CIPH_CBC_MODE,\ init_key,\ cname##_cbc_cipher,\ cleanup,\ sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\ sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\ set_asn1, get_asn1,\ ctrl, \ NULL \ };\ EVP_CIPHER *EVP_##cname##_cbc(void) { return &cname##_cbc; }\ static EVP_CIPHER cname##_cfb = {\ nid##_cfb64, 1, key_len, iv_len, \ flags | EVP_CIPH_CFB_MODE,\ init_key,\ cname##_cfb_cipher,\ cleanup,\ sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\ sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\ set_asn1, get_asn1,\ ctrl,\ NULL \ };\ EVP_CIPHER *EVP_##cname##_cfb(void) { return &cname##_cfb; }\ static EVP_CIPHER cname##_ofb = {\ nid##_ofb64, 1, key_len, iv_len, \ flags | EVP_CIPH_OFB_MODE,\ init_key,\ cname##_ofb_cipher,\ cleanup,\ sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\ sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\ set_asn1, get_asn1,\ ctrl,\ NULL \ };\ EVP_CIPHER *EVP_##cname##_ofb(void) { return &cname##_ofb; }\ static EVP_CIPHER cname##_ecb = {\ nid##_ecb, block_size, key_len, iv_len, \ flags | EVP_CIPH_ECB_MODE,\ init_key,\ cname##_ecb_cipher,\ cleanup,\ sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\ sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\ set_asn1, get_asn1,\ ctrl,\ NULL \ };\ EVP_CIPHER *EVP_##cname##_ecb(void) { return &cname##_ecb; } #define IMPLEMENT_BLOCK_CIPHER(cname, kname, cprefix, kstruct, \ nid, block_size, key_len, iv_len, flags, \ init_key, cleanup, set_asn1, get_asn1, ctrl) \ BLOCK_CIPHER_all_funcs(cname, cprefix, kname) \ BLOCK_CIPHER_defs(cname, kstruct, nid, block_size, key_len, iv_len, flags,\ init_key, cleanup, set_asn1, get_asn1, ctrl)