diff options
Diffstat (limited to 'openssl/crypto/evp/e_aes_cbc_hmac_sha1.c')
| -rw-r--r-- | openssl/crypto/evp/e_aes_cbc_hmac_sha1.c | 404 |
1 files changed, 404 insertions, 0 deletions
diff --git a/openssl/crypto/evp/e_aes_cbc_hmac_sha1.c b/openssl/crypto/evp/e_aes_cbc_hmac_sha1.c new file mode 100644 index 000000000..278c6caa2 --- /dev/null +++ b/openssl/crypto/evp/e_aes_cbc_hmac_sha1.c @@ -0,0 +1,404 @@ +/* ==================================================================== + * Copyright (c) 2011 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. + * ==================================================================== + */ + +#include <openssl/opensslconf.h> + +#include <stdio.h> +#include <string.h> + +#if !defined(OPENSSL_NO_AES) && !defined(OPENSSL_NO_SHA1) + +#include <openssl/evp.h> +#include <openssl/objects.h> +#include <openssl/aes.h> +#include <openssl/sha.h> +#include "evp_locl.h" + +#ifndef EVP_CIPH_FLAG_AEAD_CIPHER +#define EVP_CIPH_FLAG_AEAD_CIPHER 0x200000 +#define EVP_CTRL_AEAD_TLS1_AAD 0x16 +#define EVP_CTRL_AEAD_SET_MAC_KEY 0x17 +#endif + +#if !defined(EVP_CIPH_FLAG_DEFAULT_ASN1) +#define EVP_CIPH_FLAG_DEFAULT_ASN1 0 +#endif + +#define TLS1_1_VERSION 0x0302 + +typedef struct + { + AES_KEY ks; + SHA_CTX head,tail,md; + size_t payload_length; /* AAD length in decrypt case */ + union { + unsigned int tls_ver; + unsigned char tls_aad[16]; /* 13 used */ + } aux; + } EVP_AES_HMAC_SHA1; + +#if defined(AES_ASM) && ( \ + defined(__x86_64) || defined(__x86_64__) || \ + defined(_M_AMD64) || defined(_M_X64) || \ + defined(__INTEL__) ) + +extern unsigned int OPENSSL_ia32cap_P[2]; +#define AESNI_CAPABLE (1<<(57-32)) + +int aesni_set_encrypt_key(const unsigned char *userKey, int bits, + AES_KEY *key); +int aesni_set_decrypt_key(const unsigned char *userKey, int bits, + AES_KEY *key); + +void aesni_cbc_encrypt(const unsigned char *in, + unsigned char *out, + size_t length, + const AES_KEY *key, + unsigned char *ivec, int enc); + +void aesni_cbc_sha1_enc (const void *inp, void *out, size_t blocks, + const AES_KEY *key, unsigned char iv[16], + SHA_CTX *ctx,const void *in0); + +#define data(ctx) ((EVP_AES_HMAC_SHA1 *)(ctx)->cipher_data) + +static int aesni_cbc_hmac_sha1_init_key(EVP_CIPHER_CTX *ctx, + const unsigned char *inkey, + const unsigned char *iv, int enc) + { + EVP_AES_HMAC_SHA1 *key = data(ctx); + int ret; + + if (enc) + ret=aesni_set_encrypt_key(inkey,ctx->key_len*8,&key->ks); + else + ret=aesni_set_decrypt_key(inkey,ctx->key_len*8,&key->ks); + + SHA1_Init(&key->head); /* handy when benchmarking */ + key->tail = key->head; + key->md = key->head; + + key->payload_length = 0; + + return ret<0?0:1; + } + +#define STITCHED_CALL + +#if !defined(STITCHED_CALL) +#define aes_off 0 +#endif + +void sha1_block_data_order (void *c,const void *p,size_t len); + +static void sha1_update(SHA_CTX *c,const void *data,size_t len) +{ const unsigned char *ptr = data; + size_t res; + + if ((res = c->num)) { + res = SHA_CBLOCK-res; + if (len<res) res=len; + SHA1_Update (c,ptr,res); + ptr += res; + len -= res; + } + + res = len % SHA_CBLOCK; + len -= res; + + if (len) { + sha1_block_data_order(c,ptr,len/SHA_CBLOCK); + + ptr += len; + c->Nh += len>>29; + c->Nl += len<<=3; + if (c->Nl<(unsigned int)len) c->Nh++; + } + + if (res) + SHA1_Update(c,ptr,res); +} + +#define SHA1_Update sha1_update + +static int aesni_cbc_hmac_sha1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t len) + { + EVP_AES_HMAC_SHA1 *key = data(ctx); + unsigned int l; + size_t plen = key->payload_length, + iv = 0, /* explicit IV in TLS 1.1 and later */ + sha_off = 0; +#if defined(STITCHED_CALL) + size_t aes_off = 0, + blocks; + + sha_off = SHA_CBLOCK-key->md.num; +#endif + + if (len%AES_BLOCK_SIZE) return 0; + + if (ctx->encrypt) { + if (plen==0) + plen = len; + else if (len!=((plen+SHA_DIGEST_LENGTH+AES_BLOCK_SIZE)&-AES_BLOCK_SIZE)) + return 0; + else if (key->aux.tls_ver >= TLS1_1_VERSION) + iv = AES_BLOCK_SIZE; + +#if defined(STITCHED_CALL) + if (plen>(sha_off+iv) && (blocks=(plen-(sha_off+iv))/SHA_CBLOCK)) { + SHA1_Update(&key->md,in+iv,sha_off); + + aesni_cbc_sha1_enc(in,out,blocks,&key->ks, + ctx->iv,&key->md,in+iv+sha_off); + blocks *= SHA_CBLOCK; + aes_off += blocks; + sha_off += blocks; + key->md.Nh += blocks>>29; + key->md.Nl += blocks<<=3; + if (key->md.Nl<(unsigned int)blocks) key->md.Nh++; + } else { + sha_off = 0; + } +#endif + sha_off += iv; + SHA1_Update(&key->md,in+sha_off,plen-sha_off); + + if (plen!=len) { /* "TLS" mode of operation */ + if (in!=out) + memcpy(out+aes_off,in+aes_off,plen-aes_off); + + /* calculate HMAC and append it to payload */ + SHA1_Final(out+plen,&key->md); + key->md = key->tail; + SHA1_Update(&key->md,out+plen,SHA_DIGEST_LENGTH); + SHA1_Final(out+plen,&key->md); + + /* pad the payload|hmac */ + plen += SHA_DIGEST_LENGTH; + for (l=len-plen-1;plen<len;plen++) out[plen]=l; + /* encrypt HMAC|padding at once */ + aesni_cbc_encrypt(out+aes_off,out+aes_off,len-aes_off, + &key->ks,ctx->iv,1); + } else { + aesni_cbc_encrypt(in+aes_off,out+aes_off,len-aes_off, + &key->ks,ctx->iv,1); + } + } else { + unsigned char mac[SHA_DIGEST_LENGTH]; + + /* decrypt HMAC|padding at once */ + aesni_cbc_encrypt(in,out,len, + &key->ks,ctx->iv,0); + + if (plen) { /* "TLS" mode of operation */ + /* figure out payload length */ + if (len<(size_t)(out[len-1]+1+SHA_DIGEST_LENGTH)) + return 0; + + len -= (out[len-1]+1+SHA_DIGEST_LENGTH); + + if ((key->aux.tls_aad[plen-4]<<8|key->aux.tls_aad[plen-3]) + >= TLS1_1_VERSION) { + len -= AES_BLOCK_SIZE; + iv = AES_BLOCK_SIZE; + } + + key->aux.tls_aad[plen-2] = len>>8; + key->aux.tls_aad[plen-1] = len; + + /* calculate HMAC and verify it */ + key->md = key->head; + SHA1_Update(&key->md,key->aux.tls_aad,plen); + SHA1_Update(&key->md,out+iv,len); + SHA1_Final(mac,&key->md); + + key->md = key->tail; + SHA1_Update(&key->md,mac,SHA_DIGEST_LENGTH); + SHA1_Final(mac,&key->md); + + if (memcmp(out+iv+len,mac,SHA_DIGEST_LENGTH)) + return 0; + } else { + SHA1_Update(&key->md,out,len); + } + } + + key->payload_length = 0; + + return 1; + } + +static int aesni_cbc_hmac_sha1_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr) + { + EVP_AES_HMAC_SHA1 *key = data(ctx); + + switch (type) + { + case EVP_CTRL_AEAD_SET_MAC_KEY: + { + unsigned int i; + unsigned char hmac_key[64]; + + memset (hmac_key,0,sizeof(hmac_key)); + + if (arg > (int)sizeof(hmac_key)) { + SHA1_Init(&key->head); + SHA1_Update(&key->head,ptr,arg); + SHA1_Final(hmac_key,&key->head); + } else { + memcpy(hmac_key,ptr,arg); + } + + for (i=0;i<sizeof(hmac_key);i++) + hmac_key[i] ^= 0x36; /* ipad */ + SHA1_Init(&key->head); + SHA1_Update(&key->head,hmac_key,sizeof(hmac_key)); + + for (i=0;i<sizeof(hmac_key);i++) + hmac_key[i] ^= 0x36^0x5c; /* opad */ + SHA1_Init(&key->tail); + SHA1_Update(&key->tail,hmac_key,sizeof(hmac_key)); + + return 1; + } + case EVP_CTRL_AEAD_TLS1_AAD: + { + unsigned char *p=ptr; + unsigned int len=p[arg-2]<<8|p[arg-1]; + + if (ctx->encrypt) + { + key->payload_length = len; + if ((key->aux.tls_ver=p[arg-4]<<8|p[arg-3]) >= TLS1_1_VERSION) { + len -= AES_BLOCK_SIZE; + p[arg-2] = len>>8; + p[arg-1] = len; + } + key->md = key->head; + SHA1_Update(&key->md,p,arg); + + return (int)(((len+SHA_DIGEST_LENGTH+AES_BLOCK_SIZE)&-AES_BLOCK_SIZE) + - len); + } + else + { + if (arg>13) arg = 13; + memcpy(key->aux.tls_aad,ptr,arg); + key->payload_length = arg; + + return SHA_DIGEST_LENGTH; + } + } + default: + return -1; + } + } + +static EVP_CIPHER aesni_128_cbc_hmac_sha1_cipher = + { +#ifdef NID_aes_128_cbc_hmac_sha1 + NID_aes_128_cbc_hmac_sha1, +#else + NID_undef, +#endif + 16,16,16, + EVP_CIPH_CBC_MODE|EVP_CIPH_FLAG_DEFAULT_ASN1|EVP_CIPH_FLAG_AEAD_CIPHER, + aesni_cbc_hmac_sha1_init_key, + aesni_cbc_hmac_sha1_cipher, + NULL, + sizeof(EVP_AES_HMAC_SHA1), + EVP_CIPH_FLAG_DEFAULT_ASN1?NULL:EVP_CIPHER_set_asn1_iv, + EVP_CIPH_FLAG_DEFAULT_ASN1?NULL:EVP_CIPHER_get_asn1_iv, + aesni_cbc_hmac_sha1_ctrl, + NULL + }; + +static EVP_CIPHER aesni_256_cbc_hmac_sha1_cipher = + { +#ifdef NID_aes_256_cbc_hmac_sha1 + NID_aes_256_cbc_hmac_sha1, +#else + NID_undef, +#endif + 16,32,16, + EVP_CIPH_CBC_MODE|EVP_CIPH_FLAG_DEFAULT_ASN1|EVP_CIPH_FLAG_AEAD_CIPHER, + aesni_cbc_hmac_sha1_init_key, + aesni_cbc_hmac_sha1_cipher, + NULL, + sizeof(EVP_AES_HMAC_SHA1), + EVP_CIPH_FLAG_DEFAULT_ASN1?NULL:EVP_CIPHER_set_asn1_iv, + EVP_CIPH_FLAG_DEFAULT_ASN1?NULL:EVP_CIPHER_get_asn1_iv, + aesni_cbc_hmac_sha1_ctrl, + NULL + }; + +const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha1(void) + { + return(OPENSSL_ia32cap_P[1]&AESNI_CAPABLE? + &aesni_128_cbc_hmac_sha1_cipher:NULL); + } + +const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha1(void) + { + return(OPENSSL_ia32cap_P[1]&AESNI_CAPABLE? + &aesni_256_cbc_hmac_sha1_cipher:NULL); + } +#else +const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha1(void) + { + return NULL; + } +const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha1(void) + { + return NULL; + } +#endif +#endif |