1290 lines
33 KiB
C
1290 lines
33 KiB
C
/* ====================================================================
|
|
* Copyright (c) 2001-2011 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
|
|
* 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.
|
|
* ====================================================================
|
|
*
|
|
*/
|
|
|
|
#define OPENSSL_FIPSAPI
|
|
|
|
#include <openssl/opensslconf.h>
|
|
#ifndef OPENSSL_NO_AES
|
|
#include <openssl/evp.h>
|
|
#include <openssl/err.h>
|
|
#include <string.h>
|
|
#include <assert.h>
|
|
#include <openssl/aes.h>
|
|
#include "evp_locl.h"
|
|
#include "modes_lcl.h"
|
|
#include <openssl/rand.h>
|
|
|
|
typedef struct
|
|
{
|
|
AES_KEY ks;
|
|
block128_f block;
|
|
union {
|
|
cbc128_f cbc;
|
|
ctr128_f ctr;
|
|
} stream;
|
|
} EVP_AES_KEY;
|
|
|
|
typedef struct
|
|
{
|
|
AES_KEY ks; /* AES key schedule to use */
|
|
int key_set; /* Set if key initialised */
|
|
int iv_set; /* Set if an iv is set */
|
|
GCM128_CONTEXT gcm;
|
|
unsigned char *iv; /* Temporary IV store */
|
|
int ivlen; /* IV length */
|
|
int taglen;
|
|
int iv_gen; /* It is OK to generate IVs */
|
|
int tls_aad_len; /* TLS AAD length */
|
|
ctr128_f ctr;
|
|
} EVP_AES_GCM_CTX;
|
|
|
|
typedef struct
|
|
{
|
|
AES_KEY ks1, ks2; /* AES key schedules to use */
|
|
XTS128_CONTEXT xts;
|
|
void (*stream)(const unsigned char *in,
|
|
unsigned char *out, size_t length,
|
|
const AES_KEY *key1, const AES_KEY *key2,
|
|
const unsigned char iv[16]);
|
|
} EVP_AES_XTS_CTX;
|
|
|
|
typedef struct
|
|
{
|
|
AES_KEY ks; /* AES key schedule to use */
|
|
int key_set; /* Set if key initialised */
|
|
int iv_set; /* Set if an iv is set */
|
|
int tag_set; /* Set if tag is valid */
|
|
int len_set; /* Set if message length set */
|
|
int L, M; /* L and M parameters from RFC3610 */
|
|
CCM128_CONTEXT ccm;
|
|
ccm128_f str;
|
|
} EVP_AES_CCM_CTX;
|
|
|
|
#define MAXBITCHUNK ((size_t)1<<(sizeof(size_t)*8-4))
|
|
|
|
#ifdef VPAES_ASM
|
|
int vpaes_set_encrypt_key(const unsigned char *userKey, int bits,
|
|
AES_KEY *key);
|
|
int vpaes_set_decrypt_key(const unsigned char *userKey, int bits,
|
|
AES_KEY *key);
|
|
|
|
void vpaes_encrypt(const unsigned char *in, unsigned char *out,
|
|
const AES_KEY *key);
|
|
void vpaes_decrypt(const unsigned char *in, unsigned char *out,
|
|
const AES_KEY *key);
|
|
|
|
void vpaes_cbc_encrypt(const unsigned char *in,
|
|
unsigned char *out,
|
|
size_t length,
|
|
const AES_KEY *key,
|
|
unsigned char *ivec, int enc);
|
|
#endif
|
|
#ifdef BSAES_ASM
|
|
void bsaes_cbc_encrypt(const unsigned char *in, unsigned char *out,
|
|
size_t length, const AES_KEY *key,
|
|
unsigned char ivec[16], int enc);
|
|
void bsaes_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out,
|
|
size_t len, const AES_KEY *key,
|
|
const unsigned char ivec[16]);
|
|
#endif
|
|
#ifdef AES_CTR_ASM
|
|
void AES_ctr32_encrypt(const unsigned char *in, unsigned char *out,
|
|
size_t blocks, const AES_KEY *key,
|
|
const unsigned char ivec[AES_BLOCK_SIZE]);
|
|
#endif
|
|
|
|
#if defined(AES_ASM) && !defined(I386_ONLY) && ( \
|
|
((defined(__i386) || defined(__i386__) || \
|
|
defined(_M_IX86)) && defined(OPENSSL_IA32_SSE2))|| \
|
|
defined(__x86_64) || defined(__x86_64__) || \
|
|
defined(_M_AMD64) || defined(_M_X64) || \
|
|
defined(__INTEL__) )
|
|
|
|
extern unsigned int OPENSSL_ia32cap_P[2];
|
|
|
|
#ifdef VPAES_ASM
|
|
#define VPAES_CAPABLE (OPENSSL_ia32cap_P[1]&(1<<(41-32)))
|
|
#endif
|
|
#ifdef BSAES_ASM
|
|
#define BSAES_CAPABLE VPAES_CAPABLE
|
|
#endif
|
|
/*
|
|
* AES-NI section
|
|
*/
|
|
#define AESNI_CAPABLE (OPENSSL_ia32cap_P[1]&(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_encrypt(const unsigned char *in, unsigned char *out,
|
|
const AES_KEY *key);
|
|
void aesni_decrypt(const unsigned char *in, unsigned char *out,
|
|
const AES_KEY *key);
|
|
|
|
void aesni_ecb_encrypt(const unsigned char *in,
|
|
unsigned char *out,
|
|
size_t length,
|
|
const AES_KEY *key,
|
|
int enc);
|
|
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_ctr32_encrypt_blocks(const unsigned char *in,
|
|
unsigned char *out,
|
|
size_t blocks,
|
|
const void *key,
|
|
const unsigned char *ivec);
|
|
|
|
void aesni_xts_encrypt(const unsigned char *in,
|
|
unsigned char *out,
|
|
size_t length,
|
|
const AES_KEY *key1, const AES_KEY *key2,
|
|
const unsigned char iv[16]);
|
|
|
|
void aesni_xts_decrypt(const unsigned char *in,
|
|
unsigned char *out,
|
|
size_t length,
|
|
const AES_KEY *key1, const AES_KEY *key2,
|
|
const unsigned char iv[16]);
|
|
|
|
void aesni_ccm64_encrypt_blocks (const unsigned char *in,
|
|
unsigned char *out,
|
|
size_t blocks,
|
|
const void *key,
|
|
const unsigned char ivec[16],
|
|
unsigned char cmac[16]);
|
|
|
|
void aesni_ccm64_decrypt_blocks (const unsigned char *in,
|
|
unsigned char *out,
|
|
size_t blocks,
|
|
const void *key,
|
|
const unsigned char ivec[16],
|
|
unsigned char cmac[16]);
|
|
|
|
static int aesni_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
|
const unsigned char *iv, int enc)
|
|
{
|
|
int ret, mode;
|
|
EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
|
|
|
|
mode = ctx->cipher->flags & EVP_CIPH_MODE;
|
|
if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
|
|
&& !enc)
|
|
{
|
|
ret = aesni_set_decrypt_key(key, ctx->key_len*8, ctx->cipher_data);
|
|
dat->block = (block128_f)aesni_decrypt;
|
|
dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
|
|
(cbc128_f)aesni_cbc_encrypt :
|
|
NULL;
|
|
}
|
|
else {
|
|
ret = aesni_set_encrypt_key(key, ctx->key_len*8, ctx->cipher_data);
|
|
dat->block = (block128_f)aesni_encrypt;
|
|
if (mode==EVP_CIPH_CBC_MODE)
|
|
dat->stream.cbc = (cbc128_f)aesni_cbc_encrypt;
|
|
else if (mode==EVP_CIPH_CTR_MODE)
|
|
dat->stream.ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
|
|
else
|
|
dat->stream.cbc = NULL;
|
|
}
|
|
|
|
if(ret < 0)
|
|
{
|
|
EVPerr(EVP_F_AESNI_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
|
|
const unsigned char *in, size_t len)
|
|
{
|
|
aesni_cbc_encrypt(in,out,len,ctx->cipher_data,ctx->iv,ctx->encrypt);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int aesni_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
|
|
const unsigned char *in, size_t len)
|
|
{
|
|
size_t bl = ctx->cipher->block_size;
|
|
|
|
if (len<bl) return 1;
|
|
|
|
aesni_ecb_encrypt(in,out,len,ctx->cipher_data,ctx->encrypt);
|
|
|
|
return 1;
|
|
}
|
|
|
|
#define aesni_ofb_cipher aes_ofb_cipher
|
|
static int aesni_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
|
|
const unsigned char *in,size_t len);
|
|
|
|
#define aesni_cfb_cipher aes_cfb_cipher
|
|
static int aesni_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
|
|
const unsigned char *in,size_t len);
|
|
|
|
#define aesni_cfb8_cipher aes_cfb8_cipher
|
|
static int aesni_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
|
|
const unsigned char *in,size_t len);
|
|
|
|
#define aesni_cfb1_cipher aes_cfb1_cipher
|
|
static int aesni_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
|
|
const unsigned char *in,size_t len);
|
|
|
|
#define aesni_ctr_cipher aes_ctr_cipher
|
|
static int aesni_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t len);
|
|
|
|
static int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
|
const unsigned char *iv, int enc)
|
|
{
|
|
EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
|
|
if (!iv && !key)
|
|
return 1;
|
|
if (key)
|
|
{
|
|
aesni_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks);
|
|
CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
|
|
(block128_f)aesni_encrypt);
|
|
gctx->ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
|
|
/* If we have an iv can set it directly, otherwise use
|
|
* saved IV.
|
|
*/
|
|
if (iv == NULL && gctx->iv_set)
|
|
iv = gctx->iv;
|
|
if (iv)
|
|
{
|
|
CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
|
|
gctx->iv_set = 1;
|
|
}
|
|
gctx->key_set = 1;
|
|
}
|
|
else
|
|
{
|
|
/* If key set use IV, otherwise copy */
|
|
if (gctx->key_set)
|
|
CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
|
|
else
|
|
memcpy(gctx->iv, iv, gctx->ivlen);
|
|
gctx->iv_set = 1;
|
|
gctx->iv_gen = 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
#define aesni_gcm_cipher aes_gcm_cipher
|
|
static int aesni_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t len);
|
|
|
|
static int aesni_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
|
const unsigned char *iv, int enc)
|
|
{
|
|
EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
|
|
if (!iv && !key)
|
|
return 1;
|
|
|
|
if (key)
|
|
{
|
|
/* key_len is two AES keys */
|
|
if (enc)
|
|
{
|
|
aesni_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
|
|
xctx->xts.block1 = (block128_f)aesni_encrypt;
|
|
xctx->stream = aesni_xts_encrypt;
|
|
}
|
|
else
|
|
{
|
|
aesni_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
|
|
xctx->xts.block1 = (block128_f)aesni_decrypt;
|
|
xctx->stream = aesni_xts_decrypt;
|
|
}
|
|
|
|
aesni_set_encrypt_key(key + ctx->key_len/2,
|
|
ctx->key_len * 4, &xctx->ks2);
|
|
xctx->xts.block2 = (block128_f)aesni_encrypt;
|
|
|
|
xctx->xts.key1 = &xctx->ks1;
|
|
}
|
|
|
|
if (iv)
|
|
{
|
|
xctx->xts.key2 = &xctx->ks2;
|
|
memcpy(ctx->iv, iv, 16);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
#define aesni_xts_cipher aes_xts_cipher
|
|
static int aesni_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t len);
|
|
|
|
static int aesni_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
|
const unsigned char *iv, int enc)
|
|
{
|
|
EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
|
|
if (!iv && !key)
|
|
return 1;
|
|
if (key)
|
|
{
|
|
aesni_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks);
|
|
CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
|
|
&cctx->ks, (block128_f)aesni_encrypt);
|
|
cctx->str = enc?(ccm128_f)aesni_ccm64_encrypt_blocks :
|
|
(ccm128_f)aesni_ccm64_decrypt_blocks;
|
|
cctx->key_set = 1;
|
|
}
|
|
if (iv)
|
|
{
|
|
memcpy(ctx->iv, iv, 15 - cctx->L);
|
|
cctx->iv_set = 1;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
#define aesni_ccm_cipher aes_ccm_cipher
|
|
static int aesni_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t len);
|
|
|
|
#define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
|
|
static const EVP_CIPHER aesni_##keylen##_##mode = { \
|
|
nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
|
|
flags|EVP_CIPH_##MODE##_MODE, \
|
|
aesni_init_key, \
|
|
aesni_##mode##_cipher, \
|
|
NULL, \
|
|
sizeof(EVP_AES_KEY), \
|
|
NULL,NULL,NULL,NULL }; \
|
|
static const EVP_CIPHER aes_##keylen##_##mode = { \
|
|
nid##_##keylen##_##nmode,blocksize, \
|
|
keylen/8,ivlen, \
|
|
flags|EVP_CIPH_##MODE##_MODE, \
|
|
aes_init_key, \
|
|
aes_##mode##_cipher, \
|
|
NULL, \
|
|
sizeof(EVP_AES_KEY), \
|
|
NULL,NULL,NULL,NULL }; \
|
|
const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
|
|
{ return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
|
|
|
|
#define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
|
|
static const EVP_CIPHER aesni_##keylen##_##mode = { \
|
|
nid##_##keylen##_##mode,blocksize, \
|
|
(EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
|
|
flags|EVP_CIPH_##MODE##_MODE, \
|
|
aesni_##mode##_init_key, \
|
|
aesni_##mode##_cipher, \
|
|
aes_##mode##_cleanup, \
|
|
sizeof(EVP_AES_##MODE##_CTX), \
|
|
NULL,NULL,aes_##mode##_ctrl,NULL }; \
|
|
static const EVP_CIPHER aes_##keylen##_##mode = { \
|
|
nid##_##keylen##_##mode,blocksize, \
|
|
(EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
|
|
flags|EVP_CIPH_##MODE##_MODE, \
|
|
aes_##mode##_init_key, \
|
|
aes_##mode##_cipher, \
|
|
aes_##mode##_cleanup, \
|
|
sizeof(EVP_AES_##MODE##_CTX), \
|
|
NULL,NULL,aes_##mode##_ctrl,NULL }; \
|
|
const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
|
|
{ return AESNI_CAPABLE?&aesni_##keylen##_##mode:&aes_##keylen##_##mode; }
|
|
|
|
#else
|
|
|
|
#define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
|
|
static const EVP_CIPHER aes_##keylen##_##mode = { \
|
|
nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
|
|
flags|EVP_CIPH_##MODE##_MODE, \
|
|
aes_init_key, \
|
|
aes_##mode##_cipher, \
|
|
NULL, \
|
|
sizeof(EVP_AES_KEY), \
|
|
NULL,NULL,NULL,NULL }; \
|
|
const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
|
|
{ return &aes_##keylen##_##mode; }
|
|
|
|
#define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
|
|
static const EVP_CIPHER aes_##keylen##_##mode = { \
|
|
nid##_##keylen##_##mode,blocksize, \
|
|
(EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
|
|
flags|EVP_CIPH_##MODE##_MODE, \
|
|
aes_##mode##_init_key, \
|
|
aes_##mode##_cipher, \
|
|
aes_##mode##_cleanup, \
|
|
sizeof(EVP_AES_##MODE##_CTX), \
|
|
NULL,NULL,aes_##mode##_ctrl,NULL }; \
|
|
const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
|
|
{ return &aes_##keylen##_##mode; }
|
|
#endif
|
|
|
|
#define BLOCK_CIPHER_generic_pack(nid,keylen,flags) \
|
|
BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
|
|
BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
|
|
BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
|
|
BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
|
|
BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags) \
|
|
BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags) \
|
|
BLOCK_CIPHER_generic(nid,keylen,1,16,ctr,ctr,CTR,flags)
|
|
|
|
static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
|
const unsigned char *iv, int enc)
|
|
{
|
|
int ret, mode;
|
|
EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
|
|
|
|
mode = ctx->cipher->flags & EVP_CIPH_MODE;
|
|
if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
|
|
&& !enc)
|
|
#ifdef BSAES_CAPABLE
|
|
if (BSAES_CAPABLE && mode==EVP_CIPH_CBC_MODE)
|
|
{
|
|
ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
|
|
dat->block = (block128_f)AES_decrypt;
|
|
dat->stream.cbc = (cbc128_f)bsaes_cbc_encrypt;
|
|
}
|
|
else
|
|
#endif
|
|
#ifdef VPAES_CAPABLE
|
|
if (VPAES_CAPABLE)
|
|
{
|
|
ret = vpaes_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
|
|
dat->block = (block128_f)vpaes_decrypt;
|
|
dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
|
|
(cbc128_f)vpaes_cbc_encrypt :
|
|
NULL;
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks);
|
|
dat->block = (block128_f)AES_decrypt;
|
|
dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
|
|
(cbc128_f)AES_cbc_encrypt :
|
|
NULL;
|
|
}
|
|
else
|
|
#ifdef BSAES_CAPABLE
|
|
if (BSAES_CAPABLE && mode==EVP_CIPH_CTR_MODE)
|
|
{
|
|
ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
|
|
dat->block = (block128_f)AES_encrypt;
|
|
dat->stream.ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
|
|
}
|
|
else
|
|
#endif
|
|
#ifdef VPAES_CAPABLE
|
|
if (VPAES_CAPABLE)
|
|
{
|
|
ret = vpaes_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
|
|
dat->block = (block128_f)vpaes_encrypt;
|
|
dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
|
|
(cbc128_f)vpaes_cbc_encrypt :
|
|
NULL;
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks);
|
|
dat->block = (block128_f)AES_encrypt;
|
|
dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
|
|
(cbc128_f)AES_cbc_encrypt :
|
|
NULL;
|
|
#ifdef AES_CTR_ASM
|
|
if (mode==EVP_CIPH_CTR_MODE)
|
|
dat->stream.ctr = (ctr128_f)AES_ctr32_encrypt;
|
|
#endif
|
|
}
|
|
|
|
if(ret < 0)
|
|
{
|
|
EVPerr(EVP_F_AES_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
|
|
const unsigned char *in, size_t len)
|
|
{
|
|
EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
|
|
|
|
if (dat->stream.cbc)
|
|
(*dat->stream.cbc)(in,out,len,&dat->ks,ctx->iv,ctx->encrypt);
|
|
else if (ctx->encrypt)
|
|
CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
|
|
else
|
|
CRYPTO_cbc128_encrypt(in,out,len,&dat->ks,ctx->iv,dat->block);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
|
|
const unsigned char *in, size_t len)
|
|
{
|
|
size_t bl = ctx->cipher->block_size;
|
|
size_t i;
|
|
EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
|
|
|
|
if (len<bl) return 1;
|
|
|
|
for (i=0,len-=bl;i<=len;i+=bl)
|
|
(*dat->block)(in+i,out+i,&dat->ks);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
|
|
const unsigned char *in,size_t len)
|
|
{
|
|
EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
|
|
|
|
CRYPTO_ofb128_encrypt(in,out,len,&dat->ks,
|
|
ctx->iv,&ctx->num,dat->block);
|
|
return 1;
|
|
}
|
|
|
|
static int aes_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
|
|
const unsigned char *in,size_t len)
|
|
{
|
|
EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
|
|
|
|
CRYPTO_cfb128_encrypt(in,out,len,&dat->ks,
|
|
ctx->iv,&ctx->num,ctx->encrypt,dat->block);
|
|
return 1;
|
|
}
|
|
|
|
static int aes_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
|
|
const unsigned char *in,size_t len)
|
|
{
|
|
EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
|
|
|
|
CRYPTO_cfb128_8_encrypt(in,out,len,&dat->ks,
|
|
ctx->iv,&ctx->num,ctx->encrypt,dat->block);
|
|
return 1;
|
|
}
|
|
|
|
static int aes_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
|
|
const unsigned char *in,size_t len)
|
|
{
|
|
EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
|
|
|
|
if (ctx->flags&EVP_CIPH_FLAG_LENGTH_BITS) {
|
|
CRYPTO_cfb128_1_encrypt(in,out,len,&dat->ks,
|
|
ctx->iv,&ctx->num,ctx->encrypt,dat->block);
|
|
return 1;
|
|
}
|
|
|
|
while (len>=MAXBITCHUNK) {
|
|
CRYPTO_cfb128_1_encrypt(in,out,MAXBITCHUNK*8,&dat->ks,
|
|
ctx->iv,&ctx->num,ctx->encrypt,dat->block);
|
|
len-=MAXBITCHUNK;
|
|
}
|
|
if (len)
|
|
CRYPTO_cfb128_1_encrypt(in,out,len*8,&dat->ks,
|
|
ctx->iv,&ctx->num,ctx->encrypt,dat->block);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int aes_ctr_cipher (EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t len)
|
|
{
|
|
unsigned int num = ctx->num;
|
|
EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
|
|
|
|
if (dat->stream.ctr)
|
|
CRYPTO_ctr128_encrypt_ctr32(in,out,len,&dat->ks,
|
|
ctx->iv,ctx->buf,&num,dat->stream.ctr);
|
|
else
|
|
CRYPTO_ctr128_encrypt(in,out,len,&dat->ks,
|
|
ctx->iv,ctx->buf,&num,dat->block);
|
|
ctx->num = (size_t)num;
|
|
return 1;
|
|
}
|
|
|
|
BLOCK_CIPHER_generic_pack(NID_aes,128,EVP_CIPH_FLAG_FIPS)
|
|
BLOCK_CIPHER_generic_pack(NID_aes,192,EVP_CIPH_FLAG_FIPS)
|
|
BLOCK_CIPHER_generic_pack(NID_aes,256,EVP_CIPH_FLAG_FIPS)
|
|
|
|
static int aes_gcm_cleanup(EVP_CIPHER_CTX *c)
|
|
{
|
|
EVP_AES_GCM_CTX *gctx = c->cipher_data;
|
|
OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm));
|
|
if (gctx->iv != c->iv)
|
|
OPENSSL_free(gctx->iv);
|
|
return 1;
|
|
}
|
|
|
|
/* increment counter (64-bit int) by 1 */
|
|
static void ctr64_inc(unsigned char *counter) {
|
|
int n=8;
|
|
unsigned char c;
|
|
|
|
do {
|
|
--n;
|
|
c = counter[n];
|
|
++c;
|
|
counter[n] = c;
|
|
if (c) return;
|
|
} while (n);
|
|
}
|
|
|
|
static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
|
|
{
|
|
EVP_AES_GCM_CTX *gctx = c->cipher_data;
|
|
switch (type)
|
|
{
|
|
case EVP_CTRL_INIT:
|
|
gctx->key_set = 0;
|
|
gctx->iv_set = 0;
|
|
gctx->ivlen = c->cipher->iv_len;
|
|
gctx->iv = c->iv;
|
|
gctx->taglen = -1;
|
|
gctx->iv_gen = 0;
|
|
gctx->tls_aad_len = -1;
|
|
return 1;
|
|
|
|
case EVP_CTRL_GCM_SET_IVLEN:
|
|
if (arg <= 0)
|
|
return 0;
|
|
#ifdef OPENSSL_FIPS
|
|
if (FIPS_module_mode() && !(c->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW)
|
|
&& arg < 12)
|
|
return 0;
|
|
#endif
|
|
/* Allocate memory for IV if needed */
|
|
if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen))
|
|
{
|
|
if (gctx->iv != c->iv)
|
|
OPENSSL_free(gctx->iv);
|
|
gctx->iv = OPENSSL_malloc(arg);
|
|
if (!gctx->iv)
|
|
return 0;
|
|
}
|
|
gctx->ivlen = arg;
|
|
return 1;
|
|
|
|
case EVP_CTRL_GCM_SET_TAG:
|
|
if (arg <= 0 || arg > 16 || c->encrypt)
|
|
return 0;
|
|
memcpy(c->buf, ptr, arg);
|
|
gctx->taglen = arg;
|
|
return 1;
|
|
|
|
case EVP_CTRL_GCM_GET_TAG:
|
|
if (arg <= 0 || arg > 16 || !c->encrypt || gctx->taglen < 0)
|
|
return 0;
|
|
memcpy(ptr, c->buf, arg);
|
|
return 1;
|
|
|
|
case EVP_CTRL_GCM_SET_IV_FIXED:
|
|
/* Special case: -1 length restores whole IV */
|
|
if (arg == -1)
|
|
{
|
|
memcpy(gctx->iv, ptr, gctx->ivlen);
|
|
gctx->iv_gen = 1;
|
|
return 1;
|
|
}
|
|
/* Fixed field must be at least 4 bytes and invocation field
|
|
* at least 8.
|
|
*/
|
|
if ((arg < 4) || (gctx->ivlen - arg) < 8)
|
|
return 0;
|
|
if (arg)
|
|
memcpy(gctx->iv, ptr, arg);
|
|
if (c->encrypt &&
|
|
RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0)
|
|
return 0;
|
|
gctx->iv_gen = 1;
|
|
return 1;
|
|
|
|
case EVP_CTRL_GCM_IV_GEN:
|
|
if (gctx->iv_gen == 0 || gctx->key_set == 0)
|
|
return 0;
|
|
CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
|
|
if (arg <= 0 || arg > gctx->ivlen)
|
|
arg = gctx->ivlen;
|
|
memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg);
|
|
/* Invocation field will be at least 8 bytes in size and
|
|
* so no need to check wrap around or increment more than
|
|
* last 8 bytes.
|
|
*/
|
|
ctr64_inc(gctx->iv + gctx->ivlen - 8);
|
|
gctx->iv_set = 1;
|
|
return 1;
|
|
|
|
case EVP_CTRL_GCM_SET_IV_INV:
|
|
if (gctx->iv_gen == 0 || gctx->key_set == 0 || c->encrypt)
|
|
return 0;
|
|
memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg);
|
|
CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
|
|
gctx->iv_set = 1;
|
|
return 1;
|
|
|
|
case EVP_CTRL_AEAD_TLS1_AAD:
|
|
/* Save the AAD for later use */
|
|
if (arg != 13)
|
|
return 0;
|
|
memcpy(c->buf, ptr, arg);
|
|
gctx->tls_aad_len = arg;
|
|
{
|
|
unsigned int len=c->buf[arg-2]<<8|c->buf[arg-1];
|
|
/* Correct length for explicit IV */
|
|
len -= EVP_GCM_TLS_EXPLICIT_IV_LEN;
|
|
/* If decrypting correct for tag too */
|
|
if (!c->encrypt)
|
|
len -= EVP_GCM_TLS_TAG_LEN;
|
|
c->buf[arg-2] = len>>8;
|
|
c->buf[arg-1] = len & 0xff;
|
|
}
|
|
/* Extra padding: tag appended to record */
|
|
return EVP_GCM_TLS_TAG_LEN;
|
|
|
|
default:
|
|
return -1;
|
|
|
|
}
|
|
}
|
|
|
|
static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
|
const unsigned char *iv, int enc)
|
|
{
|
|
EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
|
|
if (!iv && !key)
|
|
return 1;
|
|
if (key)
|
|
{ do {
|
|
#ifdef BSAES_CAPABLE
|
|
if (BSAES_CAPABLE)
|
|
{
|
|
AES_set_encrypt_key(key,ctx->key_len*8,&gctx->ks);
|
|
CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
|
|
(block128_f)AES_encrypt);
|
|
gctx->ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
|
|
break;
|
|
}
|
|
else
|
|
#endif
|
|
#ifdef VPAES_CAPABLE
|
|
if (VPAES_CAPABLE)
|
|
{
|
|
vpaes_set_encrypt_key(key,ctx->key_len*8,&gctx->ks);
|
|
CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
|
|
(block128_f)vpaes_encrypt);
|
|
gctx->ctr = NULL;
|
|
break;
|
|
}
|
|
#endif
|
|
AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks);
|
|
CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f)AES_encrypt);
|
|
#ifdef AES_CTR_ASM
|
|
gctx->ctr = (ctr128_f)AES_ctr32_encrypt;
|
|
#else
|
|
gctx->ctr = NULL;
|
|
#endif
|
|
} while (0);
|
|
|
|
/* If we have an iv can set it directly, otherwise use
|
|
* saved IV.
|
|
*/
|
|
if (iv == NULL && gctx->iv_set)
|
|
iv = gctx->iv;
|
|
if (iv)
|
|
{
|
|
CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
|
|
gctx->iv_set = 1;
|
|
}
|
|
gctx->key_set = 1;
|
|
}
|
|
else
|
|
{
|
|
/* If key set use IV, otherwise copy */
|
|
if (gctx->key_set)
|
|
CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
|
|
else
|
|
memcpy(gctx->iv, iv, gctx->ivlen);
|
|
gctx->iv_set = 1;
|
|
gctx->iv_gen = 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/* Handle TLS GCM packet format. This consists of the last portion of the IV
|
|
* followed by the payload and finally the tag. On encrypt generate IV,
|
|
* encrypt payload and write the tag. On verify retrieve IV, decrypt payload
|
|
* and verify tag.
|
|
*/
|
|
|
|
static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t len)
|
|
{
|
|
EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
|
|
int rv = -1;
|
|
/* Encrypt/decrypt must be performed in place */
|
|
if (out != in || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN+EVP_GCM_TLS_TAG_LEN))
|
|
return -1;
|
|
/* Set IV from start of buffer or generate IV and write to start
|
|
* of buffer.
|
|
*/
|
|
if (EVP_CIPHER_CTX_ctrl(ctx, ctx->encrypt ?
|
|
EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV,
|
|
EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0)
|
|
goto err;
|
|
/* Use saved AAD */
|
|
if (CRYPTO_gcm128_aad(&gctx->gcm, ctx->buf, gctx->tls_aad_len))
|
|
goto err;
|
|
/* Fix buffer and length to point to payload */
|
|
in += EVP_GCM_TLS_EXPLICIT_IV_LEN;
|
|
out += EVP_GCM_TLS_EXPLICIT_IV_LEN;
|
|
len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
|
|
if (ctx->encrypt)
|
|
{
|
|
/* Encrypt payload */
|
|
if (gctx->ctr)
|
|
{
|
|
if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
|
|
in, out, len,
|
|
gctx->ctr))
|
|
goto err;
|
|
}
|
|
else {
|
|
if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
|
|
goto err;
|
|
}
|
|
out += len;
|
|
/* Finally write tag */
|
|
CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN);
|
|
rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
|
|
}
|
|
else
|
|
{
|
|
/* Decrypt */
|
|
if (gctx->ctr)
|
|
{
|
|
if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
|
|
in, out, len,
|
|
gctx->ctr))
|
|
goto err;
|
|
}
|
|
else {
|
|
if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
|
|
goto err;
|
|
}
|
|
/* Retrieve tag */
|
|
CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf,
|
|
EVP_GCM_TLS_TAG_LEN);
|
|
/* If tag mismatch wipe buffer */
|
|
if (memcmp(ctx->buf, in + len, EVP_GCM_TLS_TAG_LEN))
|
|
{
|
|
OPENSSL_cleanse(out, len);
|
|
goto err;
|
|
}
|
|
rv = len;
|
|
}
|
|
|
|
err:
|
|
gctx->iv_set = 0;
|
|
gctx->tls_aad_len = -1;
|
|
return rv;
|
|
}
|
|
|
|
static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t len)
|
|
{
|
|
EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
|
|
/* If not set up, return error */
|
|
if (!gctx->key_set)
|
|
return -1;
|
|
|
|
if (gctx->tls_aad_len >= 0)
|
|
return aes_gcm_tls_cipher(ctx, out, in, len);
|
|
|
|
if (!gctx->iv_set)
|
|
return -1;
|
|
if (in)
|
|
{
|
|
if (out == NULL)
|
|
{
|
|
if (CRYPTO_gcm128_aad(&gctx->gcm, in, len))
|
|
return -1;
|
|
}
|
|
else if (ctx->encrypt)
|
|
{
|
|
if (gctx->ctr)
|
|
{
|
|
if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
|
|
in, out, len,
|
|
gctx->ctr))
|
|
return -1;
|
|
}
|
|
else {
|
|
if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
|
|
return -1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (gctx->ctr)
|
|
{
|
|
if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
|
|
in, out, len,
|
|
gctx->ctr))
|
|
return -1;
|
|
}
|
|
else {
|
|
if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
|
|
return -1;
|
|
}
|
|
}
|
|
return len;
|
|
}
|
|
else
|
|
{
|
|
if (!ctx->encrypt)
|
|
{
|
|
if (gctx->taglen < 0)
|
|
return -1;
|
|
if (CRYPTO_gcm128_finish(&gctx->gcm,
|
|
ctx->buf, gctx->taglen) != 0)
|
|
return -1;
|
|
gctx->iv_set = 0;
|
|
return 0;
|
|
}
|
|
CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, 16);
|
|
gctx->taglen = 16;
|
|
/* Don't reuse the IV */
|
|
gctx->iv_set = 0;
|
|
return 0;
|
|
}
|
|
|
|
}
|
|
|
|
#define CUSTOM_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \
|
|
| EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
|
|
| EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
|
|
|
|
BLOCK_CIPHER_custom(NID_aes,128,1,12,gcm,GCM,
|
|
EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
|
|
BLOCK_CIPHER_custom(NID_aes,192,1,12,gcm,GCM,
|
|
EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
|
|
BLOCK_CIPHER_custom(NID_aes,256,1,12,gcm,GCM,
|
|
EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
|
|
|
|
static int aes_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
|
|
{
|
|
EVP_AES_XTS_CTX *xctx = c->cipher_data;
|
|
if (type != EVP_CTRL_INIT)
|
|
return -1;
|
|
/* key1 and key2 are used as an indicator both key and IV are set */
|
|
xctx->xts.key1 = NULL;
|
|
xctx->xts.key2 = NULL;
|
|
return 1;
|
|
}
|
|
|
|
static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
|
const unsigned char *iv, int enc)
|
|
{
|
|
EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
|
|
if (!iv && !key)
|
|
return 1;
|
|
|
|
if (key) do
|
|
{
|
|
xctx->stream = NULL;
|
|
/* key_len is two AES keys */
|
|
#ifdef VPAES_CAPABLE
|
|
if (VPAES_CAPABLE)
|
|
{
|
|
if (enc)
|
|
{
|
|
vpaes_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
|
|
xctx->xts.block1 = (block128_f)vpaes_encrypt;
|
|
}
|
|
else
|
|
{
|
|
vpaes_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
|
|
xctx->xts.block1 = (block128_f)vpaes_decrypt;
|
|
}
|
|
|
|
vpaes_set_encrypt_key(key + ctx->key_len/2,
|
|
ctx->key_len * 4, &xctx->ks2);
|
|
xctx->xts.block2 = (block128_f)vpaes_encrypt;
|
|
|
|
xctx->xts.key1 = &xctx->ks1;
|
|
break;
|
|
}
|
|
#endif
|
|
if (enc)
|
|
{
|
|
AES_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
|
|
xctx->xts.block1 = (block128_f)AES_encrypt;
|
|
}
|
|
else
|
|
{
|
|
AES_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
|
|
xctx->xts.block1 = (block128_f)AES_decrypt;
|
|
}
|
|
|
|
AES_set_encrypt_key(key + ctx->key_len/2,
|
|
ctx->key_len * 4, &xctx->ks2);
|
|
xctx->xts.block2 = (block128_f)AES_encrypt;
|
|
|
|
xctx->xts.key1 = &xctx->ks1;
|
|
} while (0);
|
|
|
|
if (iv)
|
|
{
|
|
xctx->xts.key2 = &xctx->ks2;
|
|
memcpy(ctx->iv, iv, 16);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t len)
|
|
{
|
|
EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
|
|
if (!xctx->xts.key1 || !xctx->xts.key2)
|
|
return 0;
|
|
if (!out || !in)
|
|
return 0;
|
|
#ifdef OPENSSL_FIPS
|
|
/* Requirement of SP800-38E */
|
|
if (FIPS_module_mode() && !(ctx->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW) &&
|
|
(len > (1UL<<20)*16))
|
|
{
|
|
EVPerr(EVP_F_AES_XTS_CIPHER, EVP_R_TOO_LARGE);
|
|
return 0;
|
|
}
|
|
#endif
|
|
if (xctx->stream)
|
|
(*xctx->stream)(in, out, len,
|
|
xctx->xts.key1, xctx->xts.key2, ctx->iv);
|
|
else if (CRYPTO_xts128_encrypt(&xctx->xts, ctx->iv, in, out, len,
|
|
ctx->encrypt))
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
#define aes_xts_cleanup NULL
|
|
|
|
#define XTS_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 | EVP_CIPH_CUSTOM_IV \
|
|
| EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT)
|
|
|
|
BLOCK_CIPHER_custom(NID_aes,128,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
|
|
BLOCK_CIPHER_custom(NID_aes,256,1,16,xts,XTS,EVP_CIPH_FLAG_FIPS|XTS_FLAGS)
|
|
|
|
static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
|
|
{
|
|
EVP_AES_CCM_CTX *cctx = c->cipher_data;
|
|
switch (type)
|
|
{
|
|
case EVP_CTRL_INIT:
|
|
cctx->key_set = 0;
|
|
cctx->iv_set = 0;
|
|
cctx->L = 8;
|
|
cctx->M = 12;
|
|
cctx->tag_set = 0;
|
|
cctx->len_set = 0;
|
|
return 1;
|
|
|
|
case EVP_CTRL_CCM_SET_IVLEN:
|
|
arg = 15 - arg;
|
|
case EVP_CTRL_CCM_SET_L:
|
|
if (arg < 2 || arg > 8)
|
|
return 0;
|
|
cctx->L = arg;
|
|
return 1;
|
|
|
|
case EVP_CTRL_CCM_SET_TAG:
|
|
if ((arg & 1) || arg < 4 || arg > 16)
|
|
return 0;
|
|
if ((c->encrypt && ptr) || (!c->encrypt && !ptr))
|
|
return 0;
|
|
if (ptr)
|
|
{
|
|
cctx->tag_set = 1;
|
|
memcpy(c->buf, ptr, arg);
|
|
}
|
|
cctx->M = arg;
|
|
return 1;
|
|
|
|
case EVP_CTRL_CCM_GET_TAG:
|
|
if (!c->encrypt || !cctx->tag_set)
|
|
return 0;
|
|
if(!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg))
|
|
return 0;
|
|
cctx->tag_set = 0;
|
|
cctx->iv_set = 0;
|
|
cctx->len_set = 0;
|
|
return 1;
|
|
|
|
default:
|
|
return -1;
|
|
|
|
}
|
|
}
|
|
|
|
static int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
|
const unsigned char *iv, int enc)
|
|
{
|
|
EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
|
|
if (!iv && !key)
|
|
return 1;
|
|
if (key) do
|
|
{
|
|
#ifdef VPAES_CAPABLE
|
|
if (VPAES_CAPABLE)
|
|
{
|
|
vpaes_set_encrypt_key(key, ctx->key_len*8, &cctx->ks);
|
|
CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
|
|
&cctx->ks, (block128_f)vpaes_encrypt);
|
|
cctx->key_set = 1;
|
|
break;
|
|
}
|
|
#endif
|
|
AES_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks);
|
|
CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
|
|
&cctx->ks, (block128_f)AES_encrypt);
|
|
cctx->str = NULL;
|
|
cctx->key_set = 1;
|
|
} while (0);
|
|
if (iv)
|
|
{
|
|
memcpy(ctx->iv, iv, 15 - cctx->L);
|
|
cctx->iv_set = 1;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
const unsigned char *in, size_t len)
|
|
{
|
|
EVP_AES_CCM_CTX *cctx = ctx->cipher_data;
|
|
CCM128_CONTEXT *ccm = &cctx->ccm;
|
|
/* If not set up, return error */
|
|
if (!cctx->iv_set && !cctx->key_set)
|
|
return -1;
|
|
if (!ctx->encrypt && !cctx->tag_set)
|
|
return -1;
|
|
if (!out)
|
|
{
|
|
if (!in)
|
|
{
|
|
if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L,len))
|
|
return -1;
|
|
cctx->len_set = 1;
|
|
return len;
|
|
}
|
|
/* If have AAD need message length */
|
|
if (!cctx->len_set && len)
|
|
return -1;
|
|
CRYPTO_ccm128_aad(ccm, in, len);
|
|
return len;
|
|
}
|
|
/* EVP_*Final() doesn't return any data */
|
|
if (!in)
|
|
return 0;
|
|
/* If not set length yet do it */
|
|
if (!cctx->len_set)
|
|
{
|
|
if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len))
|
|
return -1;
|
|
cctx->len_set = 1;
|
|
}
|
|
if (ctx->encrypt)
|
|
{
|
|
if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len,
|
|
cctx->str) :
|
|
CRYPTO_ccm128_encrypt(ccm, in, out, len))
|
|
return -1;
|
|
cctx->tag_set = 1;
|
|
return len;
|
|
}
|
|
else
|
|
{
|
|
int rv = -1;
|
|
if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len,
|
|
cctx->str) :
|
|
!CRYPTO_ccm128_decrypt(ccm, in, out, len))
|
|
{
|
|
unsigned char tag[16];
|
|
if (CRYPTO_ccm128_tag(ccm, tag, cctx->M))
|
|
{
|
|
if (!memcmp(tag, ctx->buf, cctx->M))
|
|
rv = len;
|
|
}
|
|
}
|
|
if (rv == -1)
|
|
OPENSSL_cleanse(out, len);
|
|
cctx->iv_set = 0;
|
|
cctx->tag_set = 0;
|
|
cctx->len_set = 0;
|
|
return rv;
|
|
}
|
|
|
|
}
|
|
|
|
#define aes_ccm_cleanup NULL
|
|
|
|
BLOCK_CIPHER_custom(NID_aes,128,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
|
|
BLOCK_CIPHER_custom(NID_aes,192,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
|
|
BLOCK_CIPHER_custom(NID_aes,256,1,12,ccm,CCM,EVP_CIPH_FLAG_FIPS|CUSTOM_FLAGS)
|
|
|
|
#endif
|