sl@0: /* evp_locl.h */
sl@0: /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
sl@0:  * project 2000.
sl@0:  */
sl@0: /* ====================================================================
sl@0:  * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
sl@0:  *
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  *
sl@0:  * 1. Redistributions of source code must retain the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer. 
sl@0:  *
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in
sl@0:  *    the documentation and/or other materials provided with the
sl@0:  *    distribution.
sl@0:  *
sl@0:  * 3. All advertising materials mentioning features or use of this
sl@0:  *    software must display the following acknowledgment:
sl@0:  *    "This product includes software developed by the OpenSSL Project
sl@0:  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
sl@0:  *
sl@0:  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
sl@0:  *    endorse or promote products derived from this software without
sl@0:  *    prior written permission. For written permission, please contact
sl@0:  *    licensing@OpenSSL.org.
sl@0:  *
sl@0:  * 5. Products derived from this software may not be called "OpenSSL"
sl@0:  *    nor may "OpenSSL" appear in their names without prior written
sl@0:  *    permission of the OpenSSL Project.
sl@0:  *
sl@0:  * 6. Redistributions of any form whatsoever must retain the following
sl@0:  *    acknowledgment:
sl@0:  *    "This product includes software developed by the OpenSSL Project
sl@0:  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
sl@0:  *
sl@0:  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
sl@0:  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
sl@0:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
sl@0:  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
sl@0:  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
sl@0:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
sl@0:  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
sl@0:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
sl@0:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
sl@0:  * OF THE POSSIBILITY OF SUCH DAMAGE.
sl@0:  * ====================================================================
sl@0:  *
sl@0:  * This product includes cryptographic software written by Eric Young
sl@0:  * (eay@cryptsoft.com).  This product includes software written by Tim
sl@0:  * Hudson (tjh@cryptsoft.com).
sl@0:  *
sl@0:  */
sl@0: 
sl@0: /* Macros to code block cipher wrappers */
sl@0: 
sl@0: /* Wrapper functions for each cipher mode */
sl@0: 
sl@0: #define BLOCK_CIPHER_ecb_loop() \
sl@0: 	unsigned int i, bl; \
sl@0: 	bl = ctx->cipher->block_size;\
sl@0: 	if(inl < bl) return 1;\
sl@0: 	inl -= bl; \
sl@0: 	for(i=0; i <= inl; i+=bl) 
sl@0: 
sl@0: #define BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
sl@0: static int cname##_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, unsigned int inl) \
sl@0: {\
sl@0: 	BLOCK_CIPHER_ecb_loop() \
sl@0: 		cprefix##_ecb_encrypt(in + i, out + i, &((kstruct *)ctx->cipher_data)->ksched, ctx->encrypt);\
sl@0: 	return 1;\
sl@0: }
sl@0: 
sl@0: #define BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched) \
sl@0: static int cname##_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, unsigned int inl) \
sl@0: {\
sl@0: 	cprefix##_ofb##cbits##_encrypt(in, out, (long)inl, &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, &ctx->num);\
sl@0: 	return 1;\
sl@0: }
sl@0: 
sl@0: #define BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
sl@0: static int cname##_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, unsigned int inl) \
sl@0: {\
sl@0: 	cprefix##_cbc_encrypt(in, out, (long)inl, &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, ctx->encrypt);\
sl@0: 	return 1;\
sl@0: }
sl@0: 
sl@0: #define BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
sl@0: static int cname##_cfb##cbits##_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, unsigned int inl) \
sl@0: {\
sl@0: 	cprefix##_cfb##cbits##_encrypt(in, out, (long)(cbits==1?inl*8:inl), &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, &ctx->num, ctx->encrypt);\
sl@0: 	return 1;\
sl@0: }
sl@0: 
sl@0: #define BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
sl@0: 	BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
sl@0: 	BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
sl@0: 	BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
sl@0: 	BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched)
sl@0: 
sl@0: #define BLOCK_CIPHER_def1(cname, nmode, mode, MODE, kstruct, nid, block_size, \
sl@0: 			  key_len, iv_len, flags, init_key, cleanup, \
sl@0: 			  set_asn1, get_asn1, ctrl) \
sl@0: static const EVP_CIPHER cname##_##mode = { \
sl@0: 	nid##_##nmode, block_size, key_len, iv_len, \
sl@0: 	flags | EVP_CIPH_##MODE##_MODE, \
sl@0: 	init_key, \
sl@0: 	cname##_##mode##_cipher, \
sl@0: 	cleanup, \
sl@0: 	sizeof(kstruct), \
sl@0: 	set_asn1, get_asn1,\
sl@0: 	ctrl, \
sl@0: 	NULL \
sl@0: }; \
sl@0: EXPORT_C const EVP_CIPHER *EVP_##cname##_##mode(void) { return &cname##_##mode; }
sl@0: 
sl@0: #define BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, \
sl@0: 			     iv_len, flags, init_key, cleanup, set_asn1, \
sl@0: 			     get_asn1, ctrl) \
sl@0: BLOCK_CIPHER_def1(cname, cbc, cbc, CBC, kstruct, nid, block_size, key_len, \
sl@0: 		  iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
sl@0: 
sl@0: #define BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, \
sl@0: 			     iv_len, cbits, flags, init_key, cleanup, \
sl@0: 			     set_asn1, get_asn1, ctrl) \
sl@0: BLOCK_CIPHER_def1(cname, cfb##cbits, cfb##cbits, CFB, kstruct, nid, 1, \
sl@0: 		  key_len, iv_len, flags, init_key, cleanup, set_asn1, \
sl@0: 		  get_asn1, ctrl)
sl@0: 
sl@0: #define BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, \
sl@0: 			     iv_len, cbits, flags, init_key, cleanup, \
sl@0: 			     set_asn1, get_asn1, ctrl) \
sl@0: BLOCK_CIPHER_def1(cname, ofb##cbits, ofb, OFB, kstruct, nid, 1, \
sl@0: 		  key_len, iv_len, flags, init_key, cleanup, set_asn1, \
sl@0: 		  get_asn1, ctrl)
sl@0: 
sl@0: #define BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, \
sl@0: 			     iv_len, flags, init_key, cleanup, set_asn1, \
sl@0: 			     get_asn1, ctrl) \
sl@0: BLOCK_CIPHER_def1(cname, ecb, ecb, ECB, kstruct, nid, block_size, key_len, \
sl@0: 		  iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
sl@0: 
sl@0: #define BLOCK_CIPHER_defs(cname, kstruct, \
sl@0: 			  nid, block_size, key_len, iv_len, cbits, flags, \
sl@0: 			  init_key, cleanup, set_asn1, get_asn1, ctrl) \
sl@0: BLOCK_CIPHER_def_cbc(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
sl@0: 		     init_key, cleanup, set_asn1, get_asn1, ctrl) \
sl@0: BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, iv_len, cbits, \
sl@0: 		     flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
sl@0: BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, iv_len, cbits, \
sl@0: 		     flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
sl@0: BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
sl@0: 		     init_key, cleanup, set_asn1, get_asn1, ctrl)
sl@0: 
sl@0: 
sl@0: /*
sl@0: #define BLOCK_CIPHER_defs(cname, kstruct, \
sl@0: 				nid, block_size, key_len, iv_len, flags,\
sl@0: 				 init_key, cleanup, set_asn1, get_asn1, ctrl)\
sl@0: static const EVP_CIPHER cname##_cbc = {\
sl@0: 	nid##_cbc, block_size, key_len, iv_len, \
sl@0: 	flags | EVP_CIPH_CBC_MODE,\
sl@0: 	init_key,\
sl@0: 	cname##_cbc_cipher,\
sl@0: 	cleanup,\
sl@0: 	sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
sl@0: 		sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
sl@0: 	set_asn1, get_asn1,\
sl@0: 	ctrl, \
sl@0: 	NULL \
sl@0: };\
sl@0: const EVP_CIPHER *EVP_##cname##_cbc(void) { return &cname##_cbc; }\
sl@0: static const EVP_CIPHER cname##_cfb = {\
sl@0: 	nid##_cfb64, 1, key_len, iv_len, \
sl@0: 	flags | EVP_CIPH_CFB_MODE,\
sl@0: 	init_key,\
sl@0: 	cname##_cfb_cipher,\
sl@0: 	cleanup,\
sl@0: 	sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
sl@0: 		sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
sl@0: 	set_asn1, get_asn1,\
sl@0: 	ctrl,\
sl@0: 	NULL \
sl@0: };\
sl@0: const EVP_CIPHER *EVP_##cname##_cfb(void) { return &cname##_cfb; }\
sl@0: static const EVP_CIPHER cname##_ofb = {\
sl@0: 	nid##_ofb64, 1, key_len, iv_len, \
sl@0: 	flags | EVP_CIPH_OFB_MODE,\
sl@0: 	init_key,\
sl@0: 	cname##_ofb_cipher,\
sl@0: 	cleanup,\
sl@0: 	sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
sl@0: 		sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
sl@0: 	set_asn1, get_asn1,\
sl@0: 	ctrl,\
sl@0: 	NULL \
sl@0: };\
sl@0: const EVP_CIPHER *EVP_##cname##_ofb(void) { return &cname##_ofb; }\
sl@0: static const EVP_CIPHER cname##_ecb = {\
sl@0: 	nid##_ecb, block_size, key_len, iv_len, \
sl@0: 	flags | EVP_CIPH_ECB_MODE,\
sl@0: 	init_key,\
sl@0: 	cname##_ecb_cipher,\
sl@0: 	cleanup,\
sl@0: 	sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+\
sl@0: 		sizeof((((EVP_CIPHER_CTX *)NULL)->c.kstruct)),\
sl@0: 	set_asn1, get_asn1,\
sl@0: 	ctrl,\
sl@0: 	NULL \
sl@0: };\
sl@0: const EVP_CIPHER *EVP_##cname##_ecb(void) { return &cname##_ecb; }
sl@0: */
sl@0: 
sl@0: #define IMPLEMENT_BLOCK_CIPHER(cname, ksched, cprefix, kstruct, nid, \
sl@0: 			       block_size, key_len, iv_len, cbits, \
sl@0: 			       flags, init_key, \
sl@0: 			       cleanup, set_asn1, get_asn1, ctrl) \
sl@0: 	BLOCK_CIPHER_all_funcs(cname, cprefix, cbits, kstruct, ksched) \
sl@0: 	BLOCK_CIPHER_defs(cname, kstruct, nid, block_size, key_len, iv_len, \
sl@0: 			  cbits, flags, init_key, cleanup, set_asn1, \
sl@0: 			  get_asn1, ctrl)
sl@0: 
sl@0: #define EVP_C_DATA(kstruct, ctx)	((kstruct *)(ctx)->cipher_data)
sl@0: 
sl@0: #define IMPLEMENT_CFBR(cipher,cprefix,kstruct,ksched,keysize,cbits,iv_len) \
sl@0: 	BLOCK_CIPHER_func_cfb(cipher##_##keysize,cprefix,cbits,kstruct,ksched) \
sl@0: 	BLOCK_CIPHER_def_cfb(cipher##_##keysize,kstruct, \
sl@0: 			     NID_##cipher##_##keysize, keysize/8, iv_len, cbits, \
sl@0: 			     0, cipher##_init_key, NULL, \
sl@0: 			     EVP_CIPHER_set_asn1_iv, \
sl@0: 			     EVP_CIPHER_get_asn1_iv, \
sl@0: 			     NULL)