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openssl/crypto/evp/e_aes.c

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Fix AES code. Update Rijndael source to v3.0 Add AES OIDs. Change most references of Rijndael to AES. Add new draft AES ciphersuites.
2001-02-07 18:15:18 +00:00
/* ====================================================================
* Copyright (c) 2001 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
* openssl-core@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.
* ====================================================================
*
*/
Add the possibility to have AES removed in Windows as well. Spotted by Harald Koch <chk@pobox.com>
2001-04-08 04:35:58 +00:00
#ifndef OPENSSL_NO_AES
Fix AES code. Update Rijndael source to v3.0 Add AES OIDs. Change most references of Rijndael to AES. Add new draft AES ciphersuites.
2001-02-07 18:15:18 +00:00
#include <openssl/evp.h>
#include <openssl/err.h>
#include <string.h>
Because Rijndael is more known as AES, use crypto/aes instead of crypto/rijndael. Additionally, I applied the AES integration patch from Stephen Sprunk <stephen@sprunk.org> and fiddled it to work properly with the normal EVP constructs (and incidently work the same way as all other symmetric cipher implementations). This results in an API that looks a lot like the rest of the OpenSSL cipher suite.
2002-01-02 16:55:35 +00:00
#include <openssl/aes.h>
#include "evp_locl.h"
Fix AES code. Update Rijndael source to v3.0 Add AES OIDs. Change most references of Rijndael to AES. Add new draft AES ciphersuites.
2001-02-07 18:15:18 +00:00
Because Rijndael is more known as AES, use crypto/aes instead of crypto/rijndael. Additionally, I applied the AES integration patch from Stephen Sprunk <stephen@sprunk.org> and fiddled it to work properly with the normal EVP constructs (and incidently work the same way as all other symmetric cipher implementations). This results in an API that looks a lot like the rest of the OpenSSL cipher suite.
2002-01-02 16:55:35 +00:00
static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
Fix AES code. Update Rijndael source to v3.0 Add AES OIDs. Change most references of Rijndael to AES. Add new draft AES ciphersuites.
2001-02-07 18:15:18 +00:00
const unsigned char *iv, int enc);
Because Rijndael is more known as AES, use crypto/aes instead of crypto/rijndael. Additionally, I applied the AES integration patch from Stephen Sprunk <stephen@sprunk.org> and fiddled it to work properly with the normal EVP constructs (and incidently work the same way as all other symmetric cipher implementations). This results in an API that looks a lot like the rest of the OpenSSL cipher suite.
2002-01-02 16:55:35 +00:00
typedef struct
{
AES_KEY ks;
} EVP_AES_KEY;
Fix AES code. Update Rijndael source to v3.0 Add AES OIDs. Change most references of Rijndael to AES. Add new draft AES ciphersuites.
2001-02-07 18:15:18 +00:00
Because Rijndael is more known as AES, use crypto/aes instead of crypto/rijndael. Additionally, I applied the AES integration patch from Stephen Sprunk <stephen@sprunk.org> and fiddled it to work properly with the normal EVP constructs (and incidently work the same way as all other symmetric cipher implementations). This results in an API that looks a lot like the rest of the OpenSSL cipher suite.
2002-01-02 16:55:35 +00:00
#define data(ctx) EVP_C_DATA(EVP_AES_KEY,ctx)
Fix AES code. Update Rijndael source to v3.0 Add AES OIDs. Change most references of Rijndael to AES. Add new draft AES ciphersuites.
2001-02-07 18:15:18 +00:00
The AES modes OFB and CFB are defined with 128 feedback bits. This 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.
2002-02-16 12:39:58 +00:00
IMPLEMENT_BLOCK_CIPHER(aes_128, ks, AES, EVP_AES_KEY,
NID_aes_128, 16, 16, 16, 128,
FIPS algorithm blocking. Non FIPS algorithms are not normally allowed in FIPS mode. Any attempt to use them via high level functions will return an error. The low level non-FIPS algorithm functions cannot return errors so they produce assertion failures. HMAC also has to give an assertion error because it (erroneously) can't return an error either. There are exceptions (such as MD5 in TLS and non cryptographic use of algorithms) and applications can override the blocking and use non FIPS algorithms anyway. For low level functions the override is perfomed by prefixing the algorithm initalization function with "private_" for example private_MD5_Init(). For high level functions an override is performed by setting a flag in the context.
2005-01-26 20:00:40 +00:00
EVP_CIPH_FLAG_FIPS, aes_init_key, NULL,
The AES modes OFB and CFB are defined with 128 feedback bits. This 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.
2002-02-16 12:39:58 +00:00
EVP_CIPHER_set_asn1_iv,
EVP_CIPHER_get_asn1_iv,
NULL)
IMPLEMENT_BLOCK_CIPHER(aes_192, ks, AES, EVP_AES_KEY,
NID_aes_192, 16, 24, 16, 128,
FIPS algorithm blocking. Non FIPS algorithms are not normally allowed in FIPS mode. Any attempt to use them via high level functions will return an error. The low level non-FIPS algorithm functions cannot return errors so they produce assertion failures. HMAC also has to give an assertion error because it (erroneously) can't return an error either. There are exceptions (such as MD5 in TLS and non cryptographic use of algorithms) and applications can override the blocking and use non FIPS algorithms anyway. For low level functions the override is perfomed by prefixing the algorithm initalization function with "private_" for example private_MD5_Init(). For high level functions an override is performed by setting a flag in the context.
2005-01-26 20:00:40 +00:00
EVP_CIPH_FLAG_FIPS, aes_init_key, NULL,
The AES modes OFB and CFB are defined with 128 feedback bits. This 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.
2002-02-16 12:39:58 +00:00
EVP_CIPHER_set_asn1_iv,
EVP_CIPHER_get_asn1_iv,
NULL)
IMPLEMENT_BLOCK_CIPHER(aes_256, ks, AES, EVP_AES_KEY,
NID_aes_256, 16, 32, 16, 128,
FIPS algorithm blocking. Non FIPS algorithms are not normally allowed in FIPS mode. Any attempt to use them via high level functions will return an error. The low level non-FIPS algorithm functions cannot return errors so they produce assertion failures. HMAC also has to give an assertion error because it (erroneously) can't return an error either. There are exceptions (such as MD5 in TLS and non cryptographic use of algorithms) and applications can override the blocking and use non FIPS algorithms anyway. For low level functions the override is perfomed by prefixing the algorithm initalization function with "private_" for example private_MD5_Init(). For high level functions an override is performed by setting a flag in the context.
2005-01-26 20:00:40 +00:00
EVP_CIPH_FLAG_FIPS, aes_init_key, NULL,
The AES modes OFB and CFB are defined with 128 feedback bits. This 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.
2002-02-16 12:39:58 +00:00
EVP_CIPHER_set_asn1_iv,
EVP_CIPHER_get_asn1_iv,
NULL)
Fix AES code. Update Rijndael source to v3.0 Add AES OIDs. Change most references of Rijndael to AES. Add new draft AES ciphersuites.
2001-02-07 18:15:18 +00:00
FIPS algorithm blocking. Non FIPS algorithms are not normally allowed in FIPS mode. Any attempt to use them via high level functions will return an error. The low level non-FIPS algorithm functions cannot return errors so they produce assertion failures. HMAC also has to give an assertion error because it (erroneously) can't return an error either. There are exceptions (such as MD5 in TLS and non cryptographic use of algorithms) and applications can override the blocking and use non FIPS algorithms anyway. For low level functions the override is perfomed by prefixing the algorithm initalization function with "private_" for example private_MD5_Init(). For high level functions an override is performed by setting a flag in the context.
2005-01-26 20:00:40 +00:00
#define IMPLEMENT_AES_CFBR(ksize,cbits,flags) IMPLEMENT_CFBR(aes,AES,EVP_AES_KEY,ks,ksize,cbits,16,flags)
Pull FIPS back into stable.
2004-05-11 12:46:24 +00:00
Allow AES CFB1 ciphers in FIPS mode.
2005-05-11 16:28:33 +00:00
IMPLEMENT_AES_CFBR(128,1,EVP_CIPH_FLAG_FIPS)
IMPLEMENT_AES_CFBR(192,1,EVP_CIPH_FLAG_FIPS)
IMPLEMENT_AES_CFBR(256,1,EVP_CIPH_FLAG_FIPS)
Pull FIPS back into stable.
2004-05-11 12:46:24 +00:00
FIPS algorithm blocking. Non FIPS algorithms are not normally allowed in FIPS mode. Any attempt to use them via high level functions will return an error. The low level non-FIPS algorithm functions cannot return errors so they produce assertion failures. HMAC also has to give an assertion error because it (erroneously) can't return an error either. There are exceptions (such as MD5 in TLS and non cryptographic use of algorithms) and applications can override the blocking and use non FIPS algorithms anyway. For low level functions the override is perfomed by prefixing the algorithm initalization function with "private_" for example private_MD5_Init(). For high level functions an override is performed by setting a flag in the context.
2005-01-26 20:00:40 +00:00
IMPLEMENT_AES_CFBR(128,8,EVP_CIPH_FLAG_FIPS)
IMPLEMENT_AES_CFBR(192,8,EVP_CIPH_FLAG_FIPS)
IMPLEMENT_AES_CFBR(256,8,EVP_CIPH_FLAG_FIPS)
Pull FIPS back into stable.
2004-05-11 12:46:24 +00:00
Because Rijndael is more known as AES, use crypto/aes instead of crypto/rijndael. Additionally, I applied the AES integration patch from Stephen Sprunk <stephen@sprunk.org> and fiddled it to work properly with the normal EVP constructs (and incidently work the same way as all other symmetric cipher implementations). This results in an API that looks a lot like the rest of the OpenSSL cipher suite.
2002-01-02 16:55:35 +00:00
static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
Pull FIPS back into stable.
2004-05-11 12:46:24 +00:00
const unsigned char *iv, int enc)
{
int ret;
Fix AES code. Update Rijndael source to v3.0 Add AES OIDs. Change most references of Rijndael to AES. Add new draft AES ciphersuites.
2001-02-07 18:15:18 +00:00
For CFB and OFB modes, always create the encryption key.
2002-05-31 13:11:48 +00:00
if ((ctx->cipher->flags & EVP_CIPH_MODE) == EVP_CIPH_CFB_MODE
|| (ctx->cipher->flags & EVP_CIPH_MODE) == EVP_CIPH_OFB_MODE
|| enc)
Pull FIPS back into stable.
2004-05-11 12:46:24 +00:00
ret=AES_set_encrypt_key(key, ctx->key_len * 8, ctx->cipher_data);
Because Rijndael is more known as AES, use crypto/aes instead of crypto/rijndael. Additionally, I applied the AES integration patch from Stephen Sprunk <stephen@sprunk.org> and fiddled it to work properly with the normal EVP constructs (and incidently work the same way as all other symmetric cipher implementations). This results in an API that looks a lot like the rest of the OpenSSL cipher suite.
2002-01-02 16:55:35 +00:00
else
Pull FIPS back into stable.
2004-05-11 12:46:24 +00:00
ret=AES_set_decrypt_key(key, ctx->key_len * 8, ctx->cipher_data);
if(ret < 0)
{
EVPerr(EVP_F_AES_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
return 0;
}
Fix AES code. Update Rijndael source to v3.0 Add AES OIDs. Change most references of Rijndael to AES. Add new draft AES ciphersuites.
2001-02-07 18:15:18 +00:00
return 1;
Pull FIPS back into stable.
2004-05-11 12:46:24 +00:00
}
Fix AES code. Update Rijndael source to v3.0 Add AES OIDs. Change most references of Rijndael to AES. Add new draft AES ciphersuites.
2001-02-07 18:15:18 +00:00
Add the possibility to have AES removed in Windows as well. Spotted by Harald Koch <chk@pobox.com>
2001-04-08 04:35:58 +00:00
#endif
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