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cobalt / cobalt / 0ffd5adc567c872bdcb42317e67cf421d8a36284 / . / src / third_party / openssl / openssl / crypto / evp / e_aes.c
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/* ====================================================================
* 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.
* ====================================================================
*
*/
#include <openssl/opensslconf.h>
#ifndef OPENSSL_NO_AES
#include <openssl/crypto.h>
# include <openssl/evp.h>
# include <openssl/err.h>
#include <openssl/opensslconf.h>
#if !defined(OPENSSL_SYS_STARBOARD)
# include <assert.h>
# include <string.h>
#endif // !defined(OPENSSL_SYS_STARBOARD)
# include <openssl/aes.h>
# include "evp_locl.h"
# ifndef OPENSSL_FIPS
# include "modes_lcl.h"
# include <openssl/rand.h>
#if defined(OPENSSL_SYS_STARBOARD)
# include "starboard/cryptography.h"
#endif
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))
#if defined(OPENSSL_SYS_STARBOARD) && SB_API_VERSION >= 4
static bool sb_translate_mode(int flags, SbCryptographyBlockCipherMode *mode) {
switch (flags & EVP_CIPH_MODE) {
case EVP_CIPH_CBC_MODE:
*mode = kSbCryptographyBlockCipherModeCbc;
return true;
case EVP_CIPH_CFB_MODE:
*mode = kSbCryptographyBlockCipherModeCfb;
return true;
case EVP_CIPH_CTR_MODE:
*mode = kSbCryptographyBlockCipherModeCtr;
return true;
case EVP_CIPH_ECB_MODE:
*mode = kSbCryptographyBlockCipherModeEcb;
return true;
case EVP_CIPH_OFB_MODE:
*mode = kSbCryptographyBlockCipherModeOfb;
return true;
default:
break;
}
return false;
}
static inline bool sb_has_stream(EVP_CIPHER_CTX *context) {
return SbCryptographyIsTransformerValid(context->stream_transformer);
}
static inline bool sb_gcm_has_stream(GCM128_CONTEXT *context) {
return SbCryptographyIsTransformerValid(context->gcm_transformer);
}
static int sb_init_key(EVP_CIPHER_CTX* context,
const unsigned char* key,
const unsigned char* initialization_vector,
int encrypt) {
SbCryptographyDirection direction =
(encrypt ? kSbCryptographyDirectionEncode :
kSbCryptographyDirectionDecode);
SbCryptographyBlockCipherMode mode;
if (!sb_translate_mode(context->cipher->flags, &mode)) {
return 0;
}
context->stream_transformer =
SbCryptographyCreateTransformer(
kSbCryptographyAlgorithmAes,
context->cipher->block_size * 8,
direction,
mode,
initialization_vector,
context->cipher->iv_len,
key,
context->cipher->key_len);
return sb_has_stream(context) ? 1 : 0;
}
static inline int sb_cipher(EVP_CIPHER_CTX *context,
unsigned char *out,
const unsigned char *in,
size_t len) {
if (!sb_has_stream(context)) {
return 0;
}
int result = SbCryptographyTransform(context->stream_transformer,
in,
len,
out);
return (result == len);
}
static bool sb_gcm_init(GCM128_CONTEXT *context, const void *key, int key_length,
int encrypt) {
SbCryptographyDirection direction =
(encrypt ? kSbCryptographyDirectionEncode :
kSbCryptographyDirectionDecode);
context->gcm_transformer =
SbCryptographyCreateTransformer(
kSbCryptographyAlgorithmAes,
128,
direction,
kSbCryptographyBlockCipherModeGcm,
NULL,
0,
key,
key_length);
return sb_gcm_has_stream(context);
}
static inline void sb_gcm_setiv(GCM128_CONTEXT *context,
const unsigned char *initialization_vector,
size_t initialization_vector_size) {
if (sb_gcm_has_stream(context)) {
SbCryptographySetInitializationVector(context->gcm_transformer,
initialization_vector,
initialization_vector_size);
return;
}
CRYPTO_gcm128_setiv(context, initialization_vector,
initialization_vector_size);
}
static inline int sb_gcm_aad(GCM128_CONTEXT *context,
const unsigned char *data,
size_t data_size) {
if (sb_gcm_has_stream(context)) {
return SbCryptographySetAuthenticatedData(context->gcm_transformer,
data, data_size) ? 0 : -1;
}
return CRYPTO_gcm128_aad(context, data, data_size);
}
static inline int sb_gcm_encrypt(GCM128_CONTEXT *context,
const unsigned char *in, unsigned char *out,
size_t len) {
if (sb_gcm_has_stream(context)) {
int result =
SbCryptographyTransform(context->gcm_transformer, in, len, out);
return result == len ? 0 : -1;
}
return CRYPTO_gcm128_encrypt(context, in, out, len);
}
static inline int sb_gcm_decrypt(GCM128_CONTEXT *context,
const unsigned char *in, unsigned char *out,
size_t len) {
if (sb_gcm_has_stream(context)) {
int result =
SbCryptographyTransform(context->gcm_transformer, in, len, out);
return result == len ? 0 : -1;
}
return CRYPTO_gcm128_decrypt(context, in, out, len);
}
static inline int sb_gcm_finish(GCM128_CONTEXT *context,
const unsigned char *tag, size_t len) {
if (sb_gcm_has_stream(context)) {
unsigned char actual_tag[16];
SbCryptographyGetTag(context->gcm_transformer, actual_tag, 16);
return SbMemoryCompare(tag, actual_tag, len) == 0 ? 0 : -1;
}
return CRYPTO_gcm128_finish(context, tag, len);
}
static inline void sb_gcm_tag(GCM128_CONTEXT *context,
unsigned char *tag, size_t len) {
if (sb_gcm_has_stream(context)) {
SbCryptographyGetTag(context->gcm_transformer, tag, len);
return;
}
CRYPTO_gcm128_tag(context, tag, len);
}
#define SB_TRY_INIT(context, key, iv, encrypt) \
if (sb_init_key(context, key, iv, encrypt)) { \
return 1; \
}
#define SB_TRY_CIPHER(context, out, in, len) \
if (sb_cipher(context, out, in, len)) { \
return 1; \
}
#else // defined(OPENSSL_SYS_STARBOARD) && SB_API_VERSION >= 4
static inline bool sb_has_stream(EVP_CIPHER_CTX *context) {
return false;
}
static inline bool sb_gcm_has_stream(GCM128_CONTEXT *context) {
return false;
}
static bool sb_gcm_init(GCM128_CONTEXT *context, const void *key, int key_length,
int encrypt) {
return false;
}
static inline void sb_gcm_setiv(GCM128_CONTEXT *context,
const unsigned char *initialization_vector,
size_t initialization_vector_size) {
CRYPTO_gcm128_setiv(context, initialization_vector,
initialization_vector_size);
}
static inline int sb_gcm_aad(GCM128_CONTEXT *context,
const unsigned char *data,
size_t data_size) {
return CRYPTO_gcm128_aad(context, data, data_size);
}
static inline int sb_gcm_encrypt(GCM128_CONTEXT *context,
const unsigned char *in, unsigned char *out,
size_t len) {
return CRYPTO_gcm128_encrypt(context, in, out, len);
}
static inline int sb_gcm_decrypt(GCM128_CONTEXT *context,
const unsigned char *in, unsigned char *out,
size_t len) {
return CRYPTO_gcm128_decrypt(context, in, out, len);
}
static inline int sb_gcm_finish(GCM128_CONTEXT *context,
const unsigned char *tag, size_t len) {
return CRYPTO_gcm128_finish(context, tag, len);
}
static inline void sb_gcm_tag(GCM128_CONTEXT *context, unsigned char *tag,
size_t len) {
CRYPTO_gcm128_tag(context, tag, len);
}
#define SB_TRY_INIT(context, key, iv, encrypt)
#define SB_TRY_CIPHER(context, out, in, len)
#endif // defined(OPENSSL_SYS_STARBOARD) && SB_API_VERSION >= 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]);
void bsaes_xts_encrypt(const unsigned char *inp, unsigned char *out,
size_t len, const AES_KEY *key1,
const AES_KEY *key2, const unsigned char iv[16]);
void bsaes_xts_decrypt(const unsigned char *inp, unsigned char *out,
size_t len, const AES_KEY *key1,
const AES_KEY *key2, const unsigned char iv[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
# ifdef AES_XTS_ASM
void AES_xts_encrypt(const char *inp, char *out, size_t len,
const AES_KEY *key1, const AES_KEY *key2,
const unsigned char iv[16]);
void AES_xts_decrypt(const char *inp, char *out, size_t len,
const AES_KEY *key1, const AES_KEY *key2,
const unsigned char iv[16]);
# 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 (OPENSSL_ia32cap_P[1]&(1<<(41-32)))
# 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
OPENSSL_port_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;
OPENSSL_port_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) {
OPENSSL_port_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;
SB_TRY_INIT(ctx, key, iv, enc);
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;
SB_TRY_CIPHER(ctx, out, in, len);
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;
SB_TRY_CIPHER(ctx, out, in, len);
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;
SB_TRY_CIPHER(ctx, out, in, len);
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;
SB_TRY_CIPHER(ctx, out, in, len);
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;
SB_TRY_CIPHER(ctx, out, in, len);
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;
SB_TRY_CIPHER(ctx, out, in, len);
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;
SB_TRY_CIPHER(ctx, out, in, len);
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;
#if defined(OPENSSL_SYS_STARBOARD) && SB_API_VERSION >= 4
SbCryptographyDestroyTransformer(gctx->gcm.gcm_transformer);
SbCryptographyDestroyTransformer(gctx->gcm.ctr_transformer);
SbCryptographyDestroyTransformer(gctx->gcm.ecb_transformer);
#endif // defined(OPENSSL_SYS_STARBOARD) && SB_API_VERSION >= 4
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;
#if defined(OPENSSL_SYS_STARBOARD) && SB_API_VERSION >= 4
gctx->ctr = NULL;
gctx->gcm.gcm_transformer = kSbCryptographyInvalidTransformer;
gctx->gcm.ctr_transformer = kSbCryptographyInvalidTransformer;
gctx->gcm.ecb_transformer = kSbCryptographyInvalidTransformer;
#endif
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;
OPENSSL_port_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;
OPENSSL_port_memcpy(ptr, c->buf, arg);
return 1;
case EVP_CTRL_GCM_SET_IV_FIXED:
/* Special case: -1 length restores whole IV */
if (arg == -1) {
OPENSSL_port_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)
OPENSSL_port_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;
sb_gcm_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
if (arg <= 0 || arg > gctx->ivlen)
arg = gctx->ivlen;
OPENSSL_port_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;
OPENSSL_port_memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg);
sb_gcm_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 != EVP_AEAD_TLS1_AAD_LEN)
return 0;
OPENSSL_port_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;
case EVP_CTRL_COPY:
{
EVP_CIPHER_CTX *out = ptr;
EVP_AES_GCM_CTX *gctx_out = out->cipher_data;
if (gctx->gcm.key) {
if (gctx->gcm.key != &gctx->ks)
return 0;
gctx_out->gcm.key = &gctx_out->ks;
}
if (gctx->iv == c->iv)
gctx_out->iv = out->iv;
else {
gctx_out->iv = OPENSSL_malloc(gctx->ivlen);
if (!gctx_out->iv)
return 0;
OPENSSL_port_memcpy(gctx_out->iv, gctx->iv, gctx->ivlen);
}
return 1;
}
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) {
if (!sb_gcm_init(&gctx->gcm, key, ctx->key_len, enc)) {
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) {
if (!sb_gcm_init(&gctx->gcm, key, ctx->key_len, enc)) {
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;
} else
# endif
(void)0; /* terminate potentially open 'else' */
if (!sb_gcm_init(&gctx->gcm, key, ctx->key_len, enc)) {
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) {
sb_gcm_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)
sb_gcm_setiv(&gctx->gcm, iv, gctx->ivlen);
else
OPENSSL_port_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 (sb_gcm_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 (sb_gcm_encrypt(&gctx->gcm, in, out, len))
goto err;
}
out += len;
/* Finally write tag */
sb_gcm_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 (sb_gcm_decrypt(&gctx->gcm, in, out, len))
goto err;
}
/* Retrieve tag */
sb_gcm_tag(&gctx->gcm, ctx->buf, EVP_GCM_TLS_TAG_LEN);
/* If tag mismatch wipe buffer */
if (CRYPTO_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 (sb_gcm_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 (sb_gcm_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 (sb_gcm_decrypt(&gctx->gcm, in, out, len))
return -1;
}
}
return len;
} else {
if (!ctx->encrypt) {
if (gctx->taglen < 0)
return -1;
if (sb_gcm_finish(&gctx->gcm, ctx->buf, gctx->taglen) != 0)
return -1;
gctx->iv_set = 0;
return 0;
}
sb_gcm_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 \
| EVP_CIPH_CUSTOM_COPY)
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_COPY) {
EVP_CIPHER_CTX *out = ptr;
EVP_AES_XTS_CTX *xctx_out = out->cipher_data;
if (xctx->xts.key1) {
if (xctx->xts.key1 != &xctx->ks1)
return 0;
xctx_out->xts.key1 = &xctx_out->ks1;
}
if (xctx->xts.key2) {
if (xctx->xts.key2 != &xctx->ks2)
return 0;
xctx_out->xts.key2 = &xctx_out->ks2;
}
return 1;
} else 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 {
# ifdef AES_XTS_ASM
xctx->stream = enc ? AES_xts_encrypt : AES_xts_decrypt;
# else
xctx->stream = NULL;
# endif
/* key_len is two AES keys */
# ifdef BSAES_CAPABLE
if (BSAES_CAPABLE)
xctx->stream = enc ? bsaes_xts_encrypt : bsaes_xts_decrypt;
else
# endif
# 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;
} else
# endif
(void)0; /* terminate potentially open 'else' */
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;
OPENSSL_port_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 || len < AES_BLOCK_SIZE)
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 \
| EVP_CIPH_CUSTOM_COPY)
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)
return 0;
if (ptr) {
cctx->tag_set = 1;
OPENSSL_port_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;
case EVP_CTRL_COPY:
{
EVP_CIPHER_CTX *out = ptr;
EVP_AES_CCM_CTX *cctx_out = out->cipher_data;
if (cctx->ccm.key) {
if (cctx->ccm.key != &cctx->ks)
return 0;
cctx_out->ccm.key = &cctx_out->ks;
}
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->str = NULL;
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) {
OPENSSL_port_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 (!CRYPTO_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
#endif