wbrawner/openssl
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions
openssl/crypto/evp/e_aes.c
Dr. Stephen Henson 73e45b2dd1 remove OPENSSL_FIPSAPI 
Reviewed-by: Tim Hudson <tjh@openssl.org>
2014-12-08 13:25:38 +00:00

2639 lines
68 KiB
C
Raw Blame History

/* ====================================================================
* Copyright (c) 2001-2014 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/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
{
union { double align; AES_KEY ks; } ks;
block128_f block;
union {
cbc128_f cbc;
ctr128_f ctr;
} stream;
} EVP_AES_KEY;
typedef struct
{
union { double align; AES_KEY ks; } 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
{
union { double align; AES_KEY ks; } 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
{
union { double align; AES_KEY ks; } 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;
#ifndef OPENSSL_NO_OCB
typedef struct
{
AES_KEY ksenc; /* AES key schedule to use for encryption */
AES_KEY ksdec; /* AES key schedule to use for decryption */
int key_set; /* Set if key initialised */
int iv_set; /* Set if an iv is set */
OCB128_CONTEXT ocb;
unsigned char *iv; /* Temporary IV store */
unsigned char tag[16];
unsigned char data_buf[16]; /* Store partial data blocks */
unsigned char aad_buf[16]; /* Store partial AAD blocks */
int data_buf_len;
int aad_buf_len;
int ivlen; /* IV length */
int taglen;
} EVP_AES_OCB_CTX;
#endif
#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]);
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(OPENSSL_CPUID_OBJ) && (defined(__powerpc__) || defined(__ppc__) || defined(_ARCH_PPC))
# include "ppc_arch.h"
# ifdef VPAES_ASM
# define VPAES_CAPABLE (OPENSSL_ppccap_P & PPC_ALTIVEC)
# endif
# define HWAES_CAPABLE (OPENSSL_ppccap_P & PPC_CRYPTO207)
# define HWAES_set_encrypt_key aes_p8_set_encrypt_key
# define HWAES_set_decrypt_key aes_p8_set_decrypt_key
# define HWAES_encrypt aes_p8_encrypt
# define HWAES_decrypt aes_p8_decrypt
# define HWAES_cbc_encrypt aes_p8_cbc_encrypt
# define HWAES_ctr32_encrypt_blocks aes_p8_ctr32_encrypt_blocks
#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[];
#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]);
#if defined(__x86_64) || defined(__x86_64__) || defined(_M_AMD64) || defined(_M_X64)
size_t aesni_gcm_encrypt(const unsigned char *in,
unsigned char *out,
size_t len,
const void *key,
unsigned char ivec[16],
u64 *Xi);
#define AES_gcm_encrypt aesni_gcm_encrypt
size_t aesni_gcm_decrypt(const unsigned char *in,
unsigned char *out,
size_t len,
const void *key,
unsigned char ivec[16],
u64 *Xi);
#define AES_gcm_decrypt aesni_gcm_decrypt
void gcm_ghash_avx(u64 Xi[2],const u128 Htable[16],const u8 *in,size_t len);
#define AES_GCM_ASM(gctx) (gctx->ctr==aesni_ctr32_encrypt_blocks && \
gctx->gcm.ghash==gcm_ghash_avx)
#define AES_GCM_ASM2(gctx) (gctx->gcm.block==(block128_f)aesni_encrypt && \
gctx->gcm.ghash==gcm_ghash_avx)
#undef AES_GCM_ASM2 /* minor size optimization */
#endif
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.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.ks);
xctx->xts.block1 = (block128_f)aesni_encrypt;
xctx->stream = aesni_xts_encrypt;
}
else
{
aesni_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
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.ks);
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.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);
#ifndef OPENSSL_NO_OCB
static int aesni_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
EVP_AES_OCB_CTX *octx = ctx->cipher_data;
if (!iv && !key)
return 1;
if (key)
{
do
{
/* We set both the encrypt and decrypt key here because decrypt
* needs both. We could possibly optimise to remove setting the
* decrypt for an encryption operation.
*/
aesni_set_encrypt_key(key, ctx->key_len * 8, &octx->ksenc);
aesni_set_decrypt_key(key, ctx->key_len * 8, &octx->ksdec);
if(!CRYPTO_ocb128_init(&octx->ocb, &octx->ksenc, &octx->ksdec,
(block128_f)aesni_encrypt, (block128_f)aesni_decrypt))
return 0;
}
while (0);
/* If we have an iv we can set it directly, otherwise use
* saved IV.
*/
if (iv == NULL && octx->iv_set)
iv = octx->iv;
if (iv)
{
if(CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen) != 1)
return 0;
octx->iv_set = 1;
}
octx->key_set = 1;
}
else
{
/* If key set use IV, otherwise copy */
if (octx->key_set)
CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen);
else
memcpy(octx->iv, iv, octx->ivlen);
octx->iv_set = 1;
}
return 1;
}
#define aesni_ocb_cipher aes_ocb_cipher
static int aesni_ocb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t len);
#endif /* OPENSSL_NO_OCB */
#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; }
#elif defined(AES_ASM) && (defined(__sparc) || defined(__sparc__))
#include "sparc_arch.h"
extern unsigned int OPENSSL_sparcv9cap_P[];
#define SPARC_AES_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_AES)
void aes_t4_set_encrypt_key (const unsigned char *key, int bits,
AES_KEY *ks);
void aes_t4_set_decrypt_key (const unsigned char *key, int bits,
AES_KEY *ks);
void aes_t4_encrypt (const unsigned char *in, unsigned char *out,
const AES_KEY *key);
void aes_t4_decrypt (const unsigned char *in, unsigned char *out,
const AES_KEY *key);
/*
* Key-length specific subroutines were chosen for following reason.
* Each SPARC T4 core can execute up to 8 threads which share core's
* resources. Loading as much key material to registers allows to
* minimize references to shared memory interface, as well as amount
* of instructions in inner loops [much needed on T4]. But then having
* non-key-length specific routines would require conditional branches
* either in inner loops or on subroutines' entries. Former is hardly
* acceptable, while latter means code size increase to size occupied
* by multiple key-length specfic subroutines, so why fight?
*/
void aes128_t4_cbc_encrypt (const unsigned char *in, unsigned char *out,
size_t len, const AES_KEY *key,
unsigned char *ivec);
void aes128_t4_cbc_decrypt (const unsigned char *in, unsigned char *out,
size_t len, const AES_KEY *key,
unsigned char *ivec);
void aes192_t4_cbc_encrypt (const unsigned char *in, unsigned char *out,
size_t len, const AES_KEY *key,
unsigned char *ivec);
void aes192_t4_cbc_decrypt (const unsigned char *in, unsigned char *out,
size_t len, const AES_KEY *key,
unsigned char *ivec);
void aes256_t4_cbc_encrypt (const unsigned char *in, unsigned char *out,
size_t len, const AES_KEY *key,
unsigned char *ivec);
void aes256_t4_cbc_decrypt (const unsigned char *in, unsigned char *out,
size_t len, const AES_KEY *key,
unsigned char *ivec);
void aes128_t4_ctr32_encrypt (const unsigned char *in, unsigned char *out,
size_t blocks, const AES_KEY *key,
unsigned char *ivec);
void aes192_t4_ctr32_encrypt (const unsigned char *in, unsigned char *out,
size_t blocks, const AES_KEY *key,
unsigned char *ivec);
void aes256_t4_ctr32_encrypt (const unsigned char *in, unsigned char *out,
size_t blocks, const AES_KEY *key,
unsigned char *ivec);
void aes128_t4_xts_encrypt (const unsigned char *in, unsigned char *out,
size_t blocks, const AES_KEY *key1,
const AES_KEY *key2, const unsigned char *ivec);
void aes128_t4_xts_decrypt (const unsigned char *in, unsigned char *out,
size_t blocks, const AES_KEY *key1,
const AES_KEY *key2, const unsigned char *ivec);
void aes256_t4_xts_encrypt (const unsigned char *in, unsigned char *out,
size_t blocks, const AES_KEY *key1,
const AES_KEY *key2, const unsigned char *ivec);
void aes256_t4_xts_decrypt (const unsigned char *in, unsigned char *out,
size_t blocks, const AES_KEY *key1,
const AES_KEY *key2, const unsigned char *ivec);
static int aes_t4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
int ret, mode, bits;
EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
mode = ctx->cipher->flags & EVP_CIPH_MODE;
bits = ctx->key_len*8;
if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
&& !enc)
{
ret = 0;
aes_t4_set_decrypt_key(key, bits, ctx->cipher_data);
dat->block = (block128_f)aes_t4_decrypt;
switch (bits) {
case 128:
dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
(cbc128_f)aes128_t4_cbc_decrypt :
NULL;
break;
case 192:
dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
(cbc128_f)aes192_t4_cbc_decrypt :
NULL;
break;
case 256:
dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
(cbc128_f)aes256_t4_cbc_decrypt :
NULL;
break;
default:
ret = -1;
}
}
else {
ret = 0;
aes_t4_set_encrypt_key(key, bits, ctx->cipher_data);
dat->block = (block128_f)aes_t4_encrypt;
switch (bits) {
case 128:
if (mode==EVP_CIPH_CBC_MODE)
dat->stream.cbc = (cbc128_f)aes128_t4_cbc_encrypt;
else if (mode==EVP_CIPH_CTR_MODE)
dat->stream.ctr = (ctr128_f)aes128_t4_ctr32_encrypt;
else
dat->stream.cbc = NULL;
break;
case 192:
if (mode==EVP_CIPH_CBC_MODE)
dat->stream.cbc = (cbc128_f)aes192_t4_cbc_encrypt;
else if (mode==EVP_CIPH_CTR_MODE)
dat->stream.ctr = (ctr128_f)aes192_t4_ctr32_encrypt;
else
dat->stream.cbc = NULL;
break;
case 256:
if (mode==EVP_CIPH_CBC_MODE)
dat->stream.cbc = (cbc128_f)aes256_t4_cbc_encrypt;
else if (mode==EVP_CIPH_CTR_MODE)
dat->stream.ctr = (ctr128_f)aes256_t4_ctr32_encrypt;
else
dat->stream.cbc = NULL;
break;
default:
ret = -1;
}
}
if(ret < 0)
{
EVPerr(EVP_F_AES_T4_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
return 0;
}
return 1;
}
#define aes_t4_cbc_cipher aes_cbc_cipher
static int aes_t4_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
const unsigned char *in, size_t len);
#define aes_t4_ecb_cipher aes_ecb_cipher
static int aes_t4_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
const unsigned char *in, size_t len);
#define aes_t4_ofb_cipher aes_ofb_cipher
static int aes_t4_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
const unsigned char *in,size_t len);
#define aes_t4_cfb_cipher aes_cfb_cipher
static int aes_t4_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
const unsigned char *in,size_t len);
#define aes_t4_cfb8_cipher aes_cfb8_cipher
static int aes_t4_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
const unsigned char *in,size_t len);
#define aes_t4_cfb1_cipher aes_cfb1_cipher
static int aes_t4_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
const unsigned char *in,size_t len);
#define aes_t4_ctr_cipher aes_ctr_cipher
static int aes_t4_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t len);
static int aes_t4_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)
{
int bits = ctx->key_len * 8;
aes_t4_set_encrypt_key(key, bits, &gctx->ks.ks);
CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
(block128_f)aes_t4_encrypt);
switch (bits) {
case 128:
gctx->ctr = (ctr128_f)aes128_t4_ctr32_encrypt;
break;
case 192:
gctx->ctr = (ctr128_f)aes192_t4_ctr32_encrypt;
break;
case 256:
gctx->ctr = (ctr128_f)aes256_t4_ctr32_encrypt;
break;
default:
return 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;
}
#define aes_t4_gcm_cipher aes_gcm_cipher
static int aes_t4_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t len);
static int aes_t4_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)
{
int bits = ctx->key_len * 4;
xctx->stream = NULL;
/* key_len is two AES keys */
if (enc)
{
aes_t4_set_encrypt_key(key, bits, &xctx->ks1.ks);
xctx->xts.block1 = (block128_f)aes_t4_encrypt;
switch (bits) {
case 128:
xctx->stream = aes128_t4_xts_encrypt;
break;
#if 0 /* not yet */
case 192:
xctx->stream = aes192_t4_xts_encrypt;
break;
#endif
case 256:
xctx->stream = aes256_t4_xts_encrypt;
break;
default:
return 0;
}
}
else
{
aes_t4_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
xctx->xts.block1 = (block128_f)aes_t4_decrypt;
switch (bits) {
case 128:
xctx->stream = aes128_t4_xts_decrypt;
break;
#if 0 /* not yet */
case 192:
xctx->stream = aes192_t4_xts_decrypt;
break;
#endif
case 256:
xctx->stream = aes256_t4_xts_decrypt;
break;
default:
return 0;
}
}
aes_t4_set_encrypt_key(key + ctx->key_len/2,
ctx->key_len * 4, &xctx->ks2.ks);
xctx->xts.block2 = (block128_f)aes_t4_encrypt;
xctx->xts.key1 = &xctx->ks1;
}
if (iv)
{
xctx->xts.key2 = &xctx->ks2;
memcpy(ctx->iv, iv, 16);
}
return 1;
}
#define aes_t4_xts_cipher aes_xts_cipher
static int aes_t4_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t len);
static int aes_t4_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)
{
int bits = ctx->key_len * 8;
aes_t4_set_encrypt_key(key, bits, &cctx->ks.ks);
CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
&cctx->ks, (block128_f)aes_t4_encrypt);
#if 0 /* not yet */
switch (bits) {
case 128:
cctx->str = enc?(ccm128_f)aes128_t4_ccm64_encrypt :
(ccm128_f)ae128_t4_ccm64_decrypt;
break;
case 192:
cctx->str = enc?(ccm128_f)aes192_t4_ccm64_encrypt :
(ccm128_f)ae192_t4_ccm64_decrypt;
break;
case 256:
cctx->str = enc?(ccm128_f)aes256_t4_ccm64_encrypt :
(ccm128_f)ae256_t4_ccm64_decrypt;
break;
default:
return 0;
}
#endif
cctx->key_set = 1;
}
if (iv)
{
memcpy(ctx->iv, iv, 15 - cctx->L);
cctx->iv_set = 1;
}
return 1;
}
#define aes_t4_ccm_cipher aes_ccm_cipher
static int aes_t4_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t len);
#ifndef OPENSSL_NO_OCB
static int aes_t4_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
EVP_AES_OCB_CTX *octx = ctx->cipher_data;
if (!iv && !key)
return 1;
if (key)
{
do
{
/* We set both the encrypt and decrypt key here because decrypt
* needs both. We could possibly optimise to remove setting the
* decrypt for an encryption operation.
*/
aes_t4_set_encrypt_key(key, ctx->key_len * 8, &octx->ksenc);
aes_t4_set_decrypt_key(key, ctx->key_len * 8, &octx->ksdec);
if(!CRYPTO_ocb128_init(&octx->ocb, &octx->ksenc, &octx->ksdec,
(block128_f)aes_t4_encrypt, (block128_f)aes_t4_decrypt))
return 0;
}
while (0);
/* If we have an iv we can set it directly, otherwise use
* saved IV.
*/
if (iv == NULL && octx->iv_set)
iv = octx->iv;
if (iv)
{
if(CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen) != 1)
return 0;
octx->iv_set = 1;
}
octx->key_set = 1;
}
else
{
/* If key set use IV, otherwise copy */
if (octx->key_set)
CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen);
else
memcpy(octx->iv, iv, octx->ivlen);
octx->iv_set = 1;
}
return 1;
}
#define aes_t4_ocb_cipher aes_ocb_cipher
static int aes_t4_ocb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t len);
#endif /* OPENSSL_NO_OCB */
#define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
static const EVP_CIPHER aes_t4_##keylen##_##mode = { \
nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
flags|EVP_CIPH_##MODE##_MODE, \
aes_t4_init_key, \
aes_t4_##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 SPARC_AES_CAPABLE?&aes_t4_##keylen##_##mode:&aes_##keylen##_##mode; }
#define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
static const EVP_CIPHER aes_t4_##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_t4_##mode##_init_key, \
aes_t4_##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 SPARC_AES_CAPABLE?&aes_t4_##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
#if defined(OPENSSL_CPUID_OBJ) && (defined(__arm__) || defined(__arm) || defined(__aarch64__))
#include "arm_arch.h"
#if __ARM_ARCH__>=7
# if defined(BSAES_ASM)
# define BSAES_CAPABLE (OPENSSL_armcap_P & ARMV7_NEON)
# endif
# define HWAES_CAPABLE (OPENSSL_armcap_P & ARMV8_AES)
# define HWAES_set_encrypt_key aes_v8_set_encrypt_key
# define HWAES_set_decrypt_key aes_v8_set_decrypt_key
# define HWAES_encrypt aes_v8_encrypt
# define HWAES_decrypt aes_v8_decrypt
# define HWAES_cbc_encrypt aes_v8_cbc_encrypt
# define HWAES_ctr32_encrypt_blocks aes_v8_ctr32_encrypt_blocks
#endif
#endif
#if defined(HWAES_CAPABLE)
int HWAES_set_encrypt_key(const unsigned char *userKey, const int bits,
AES_KEY *key);
int HWAES_set_decrypt_key(const unsigned char *userKey, const int bits,
AES_KEY *key);
void HWAES_encrypt(const unsigned char *in, unsigned char *out,
const AES_KEY *key);
void HWAES_decrypt(const unsigned char *in, unsigned char *out,
const AES_KEY *key);
void HWAES_cbc_encrypt(const unsigned char *in, unsigned char *out,
size_t length, const AES_KEY *key,
unsigned char *ivec, const int enc);
void HWAES_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out,
size_t len, const AES_KEY *key, const unsigned char ivec[16]);
#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 HWAES_CAPABLE
if (HWAES_CAPABLE)
{
ret = HWAES_set_decrypt_key(key,ctx->key_len*8,&dat->ks.ks);
dat->block = (block128_f)HWAES_decrypt;
dat->stream.cbc = NULL;
#ifdef HWAES_cbc_encrypt
if (mode==EVP_CIPH_CBC_MODE)
dat->stream.cbc = (cbc128_f)HWAES_cbc_encrypt;
#endif
}
else
#endif
#ifdef BSAES_CAPABLE
if (BSAES_CAPABLE && mode==EVP_CIPH_CBC_MODE)
{
ret = AES_set_decrypt_key(key,ctx->key_len*8,&dat->ks.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.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.ks);
dat->block = (block128_f)AES_decrypt;
dat->stream.cbc = mode==EVP_CIPH_CBC_MODE ?
(cbc128_f)AES_cbc_encrypt :
NULL;
}
else
#ifdef HWAES_CAPABLE
if (HWAES_CAPABLE)
{
ret = HWAES_set_encrypt_key(key,ctx->key_len*8,&dat->ks.ks);
dat->block = (block128_f)HWAES_encrypt;
dat->stream.cbc = NULL;
#ifdef HWAES_cbc_encrypt
if (mode==EVP_CIPH_CBC_MODE)
dat->stream.cbc = (cbc128_f)HWAES_cbc_encrypt;
else
#endif
#ifdef HWAES_ctr32_encrypt_blocks
if (mode==EVP_CIPH_CTR_MODE)
dat->stream.ctr = (ctr128_f)HWAES_ctr32_encrypt_blocks;
else
#endif
(void)0; /* terminate potentially open 'else' */
}
else
#endif
#ifdef BSAES_CAPABLE
if (BSAES_CAPABLE && mode==EVP_CIPH_CTR_MODE)
{
ret = AES_set_encrypt_key(key,ctx->key_len*8,&dat->ks.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.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.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_decrypt(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,128,0)
BLOCK_CIPHER_generic_pack(NID_aes,192,0)
BLOCK_CIPHER_generic_pack(NID_aes,256,0)
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;
/* 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;
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;
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 HWAES_CAPABLE
if (HWAES_CAPABLE)
{
HWAES_set_encrypt_key(key,ctx->key_len*8,&gctx->ks.ks);
CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
(block128_f)HWAES_encrypt);
#ifdef HWAES_ctr32_encrypt_blocks
gctx->ctr = (ctr128_f)HWAES_ctr32_encrypt_blocks;
#else
gctx->ctr = NULL;
#endif
break;
}
else
#endif
#ifdef BSAES_CAPABLE
if (BSAES_CAPABLE)
{
AES_set_encrypt_key(key,ctx->key_len*8,&gctx->ks.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.ks);
CRYPTO_gcm128_init(&gctx->gcm,&gctx->ks,
(block128_f)vpaes_encrypt);
gctx->ctr = NULL;
break;
}
else
#endif
(void)0; /* terminate potentially open 'else' */
AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.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)
{
size_t bulk=0;
#if defined(AES_GCM_ASM)
if (len>=32 && AES_GCM_ASM(gctx))
{
if (CRYPTO_gcm128_encrypt(&gctx->gcm,NULL,NULL,0))
return -1;
bulk = AES_gcm_encrypt(in,out,len,
gctx->gcm.key,
gctx->gcm.Yi.c,
gctx->gcm.Xi.u);
gctx->gcm.len.u[1] += bulk;
}
#endif
if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
in +bulk,
out+bulk,
len-bulk,
gctx->ctr))
goto err;
}
else {
size_t bulk=0;
#if defined(AES_GCM_ASM2)
if (len>=32 && AES_GCM_ASM2(gctx))
{
if (CRYPTO_gcm128_encrypt(&gctx->gcm,NULL,NULL,0))
return -1;
bulk = AES_gcm_encrypt(in,out,len,
gctx->gcm.key,
gctx->gcm.Yi.c,
gctx->gcm.Xi.u);
gctx->gcm.len.u[1] += bulk;
}
#endif
if (CRYPTO_gcm128_encrypt(&gctx->gcm,
in +bulk,
out+bulk,
len-bulk))
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)
{
size_t bulk=0;
#if defined(AES_GCM_ASM)
if (len>=16 && AES_GCM_ASM(gctx))
{
if (CRYPTO_gcm128_decrypt(&gctx->gcm,NULL,NULL,0))
return -1;
bulk = AES_gcm_decrypt(in,out,len,
gctx->gcm.key,
gctx->gcm.Yi.c,
gctx->gcm.Xi.u);
gctx->gcm.len.u[1] += bulk;
}
#endif
if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
in +bulk,
out+bulk,
len-bulk,
gctx->ctr))
goto err;
}
else {
size_t bulk=0;
#if defined(AES_GCM_ASM2)
if (len>=16 && AES_GCM_ASM2(gctx))
{
if (CRYPTO_gcm128_decrypt(&gctx->gcm,NULL,NULL,0))
return -1;
bulk = AES_gcm_decrypt(in,out,len,
gctx->gcm.key,
gctx->gcm.Yi.c,
gctx->gcm.Xi.u);
gctx->gcm.len.u[1] += bulk;
}
#endif
if (CRYPTO_gcm128_decrypt(&gctx->gcm,
in +bulk,
out+bulk,
len-bulk))
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)
{
size_t bulk=0;
#if defined(AES_GCM_ASM)
if (len>=32 && AES_GCM_ASM(gctx))
{
size_t res = (16-gctx->gcm.mres)%16;
if (CRYPTO_gcm128_encrypt(&gctx->gcm,
in,out,res))
return -1;
bulk = AES_gcm_encrypt(in+res,
out+res,len-res, gctx->gcm.key,
gctx->gcm.Yi.c,
gctx->gcm.Xi.u);
gctx->gcm.len.u[1] += bulk;
bulk += res;
}
#endif
if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
in +bulk,
out+bulk,
len-bulk,
gctx->ctr))
return -1;
}
else {
size_t bulk=0;
#if defined(AES_GCM_ASM2)
if (len>=32 && AES_GCM_ASM2(gctx))
{
size_t res = (16-gctx->gcm.mres)%16;
if (CRYPTO_gcm128_encrypt(&gctx->gcm,
in,out,res))
return -1;
bulk = AES_gcm_encrypt(in+res,
out+res,len-res, gctx->gcm.key,
gctx->gcm.Yi.c,
gctx->gcm.Xi.u);
gctx->gcm.len.u[1] += bulk;
bulk += res;
}
#endif
if (CRYPTO_gcm128_encrypt(&gctx->gcm,
in +bulk,
out+bulk,
len-bulk))
return -1;
}
}
else
{
if (gctx->ctr)
{
size_t bulk=0;
#if defined(AES_GCM_ASM)
if (len>=16 && AES_GCM_ASM(gctx))
{
size_t res = (16-gctx->gcm.mres)%16;
if (CRYPTO_gcm128_decrypt(&gctx->gcm,
in,out,res))
return -1;
bulk = AES_gcm_decrypt(in+res,
out+res,len-res,
gctx->gcm.key,
gctx->gcm.Yi.c,
gctx->gcm.Xi.u);
gctx->gcm.len.u[1] += bulk;
bulk += res;
}
#endif
if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
in +bulk,
out+bulk,
len-bulk,
gctx->ctr))
return -1;
}
else {
size_t bulk=0;
#if defined(AES_GCM_ASM2)
if (len>=16 && AES_GCM_ASM2(gctx))
{
size_t res = (16-gctx->gcm.mres)%16;
if (CRYPTO_gcm128_decrypt(&gctx->gcm,
in,out,res))
return -1;
bulk = AES_gcm_decrypt(in+res,
out+res,len-res,
gctx->gcm.key,
gctx->gcm.Yi.c,
gctx->gcm.Xi.u);
gctx->gcm.len.u[1] += bulk;
bulk += res;
}
#endif
if (CRYPTO_gcm128_decrypt(&gctx->gcm,
in +bulk,
out+bulk,
len-bulk))
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 \
| EVP_CIPH_CUSTOM_COPY)
BLOCK_CIPHER_custom(NID_aes,128,1,12,gcm,GCM,
EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
BLOCK_CIPHER_custom(NID_aes,192,1,12,gcm,GCM,
EVP_CIPH_FLAG_AEAD_CIPHER|CUSTOM_FLAGS)
BLOCK_CIPHER_custom(NID_aes,256,1,12,gcm,GCM,
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 HWAES_CAPABLE
if (HWAES_CAPABLE)
{
if (enc)
{
HWAES_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
xctx->xts.block1 = (block128_f)HWAES_encrypt;
}
else
{
HWAES_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
xctx->xts.block1 = (block128_f)HWAES_decrypt;
}
HWAES_set_encrypt_key(key + ctx->key_len/2,
ctx->key_len * 4, &xctx->ks2.ks);
xctx->xts.block2 = (block128_f)HWAES_encrypt;
xctx->xts.key1 = &xctx->ks1;
break;
}
else
#endif
#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.ks);
xctx->xts.block1 = (block128_f)vpaes_encrypt;
}
else
{
vpaes_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
xctx->xts.block1 = (block128_f)vpaes_decrypt;
}
vpaes_set_encrypt_key(key + ctx->key_len/2,
ctx->key_len * 4, &xctx->ks2.ks);
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.ks);
xctx->xts.block1 = (block128_f)AES_encrypt;
}
else
{
AES_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1.ks);
xctx->xts.block1 = (block128_f)AES_decrypt;
}
AES_set_encrypt_key(key + ctx->key_len/2,
ctx->key_len * 4, &xctx->ks2.ks);
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 || len<AES_BLOCK_SIZE)
return 0;
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,XTS_FLAGS)
BLOCK_CIPHER_custom(NID_aes,256,1,16,xts,XTS,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;
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 HWAES_CAPABLE
if (HWAES_CAPABLE)
{
HWAES_set_encrypt_key(key,ctx->key_len*8,&cctx->ks.ks);
CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
&cctx->ks, (block128_f)HWAES_encrypt);
cctx->str = NULL;
cctx->key_set = 1;
break;
}
else
#endif
#ifdef VPAES_CAPABLE
if (VPAES_CAPABLE)
{
vpaes_set_encrypt_key(key, ctx->key_len*8, &cctx->ks.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.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,CUSTOM_FLAGS)
BLOCK_CIPHER_custom(NID_aes,192,1,12,ccm,CCM,CUSTOM_FLAGS)
BLOCK_CIPHER_custom(NID_aes,256,1,12,ccm,CCM,CUSTOM_FLAGS)
typedef struct
{
union { double align; AES_KEY ks; } ks;
/* Indicates if IV has been set */
unsigned char *iv;
} EVP_AES_WRAP_CTX;
static int aes_wrap_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
EVP_AES_WRAP_CTX *wctx = ctx->cipher_data;
if (!iv && !key)
return 1;
if (key)
{
if (ctx->encrypt)
AES_set_encrypt_key(key, ctx->key_len * 8, &wctx->ks.ks);
else
AES_set_decrypt_key(key, ctx->key_len * 8, &wctx->ks.ks);
if (!iv)
wctx->iv = NULL;
}
if (iv)
{
memcpy(ctx->iv, iv, EVP_CIPHER_CTX_iv_length(ctx));
wctx->iv = ctx->iv;
}
return 1;
}
static int aes_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t inlen)
{
EVP_AES_WRAP_CTX *wctx = ctx->cipher_data;
size_t rv;
/* AES wrap with padding has IV length of 4, without padding 8 */
int pad = EVP_CIPHER_CTX_iv_length(ctx) == 4;
/* No final operation so always return zero length */
if (!in)
return 0;
/* Input length must always be non-zero */
if (!inlen)
return -1;
/* If decrypting need at least 16 bytes and multiple of 8 */
if (!ctx->encrypt && (inlen < 16 || inlen & 0x7))
return -1;
/* If not padding input must be multiple of 8 */
if (!pad && inlen & 0x7)
return -1;
if (!out)
{
if (ctx->encrypt)
{
/* If padding round up to multiple of 8 */
if (pad)
inlen = (inlen + 7)/8 * 8;
/* 8 byte prefix */
return inlen + 8;
}
else
{
/* If not padding output will be exactly 8 bytes
* smaller than input. If padding it will be at
* least 8 bytes smaller but we don't know how
* much.
*/
return inlen - 8;
}
}
if (pad)
{
if (ctx->encrypt)
rv = CRYPTO_128_wrap_pad(&wctx->ks.ks, wctx->iv,
out, in, inlen,
(block128_f)AES_encrypt);
else
rv = CRYPTO_128_unwrap_pad(&wctx->ks.ks, wctx->iv,
out, in, inlen,
(block128_f)AES_decrypt);
}
else
{
if (ctx->encrypt)
rv = CRYPTO_128_wrap(&wctx->ks.ks, wctx->iv,
out, in, inlen,
(block128_f)AES_encrypt);
else
rv = CRYPTO_128_unwrap(&wctx->ks.ks, wctx->iv,
out, in, inlen,
(block128_f)AES_decrypt);
}
return rv ? (int)rv : -1;
}
#define WRAP_FLAGS (EVP_CIPH_WRAP_MODE \
| EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
| EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_FLAG_DEFAULT_ASN1)
static const EVP_CIPHER aes_128_wrap = {
NID_id_aes128_wrap,
8, 16, 8, WRAP_FLAGS,
aes_wrap_init_key, aes_wrap_cipher,
NULL,
sizeof(EVP_AES_WRAP_CTX),
NULL,NULL,NULL,NULL };
const EVP_CIPHER *EVP_aes_128_wrap(void)
{
return &aes_128_wrap;
}
static const EVP_CIPHER aes_192_wrap = {
NID_id_aes192_wrap,
8, 24, 8, WRAP_FLAGS,
aes_wrap_init_key, aes_wrap_cipher,
NULL,
sizeof(EVP_AES_WRAP_CTX),
NULL,NULL,NULL,NULL };
const EVP_CIPHER *EVP_aes_192_wrap(void)
{
return &aes_192_wrap;
}
static const EVP_CIPHER aes_256_wrap = {
NID_id_aes256_wrap,
8, 32, 8, WRAP_FLAGS,
aes_wrap_init_key, aes_wrap_cipher,
NULL,
sizeof(EVP_AES_WRAP_CTX),
NULL,NULL,NULL,NULL };
const EVP_CIPHER *EVP_aes_256_wrap(void)
{
return &aes_256_wrap;
}
static const EVP_CIPHER aes_128_wrap_pad = {
NID_id_aes128_wrap_pad,
8, 16, 4, WRAP_FLAGS,
aes_wrap_init_key, aes_wrap_cipher,
NULL,
sizeof(EVP_AES_WRAP_CTX),
NULL,NULL,NULL,NULL };
const EVP_CIPHER *EVP_aes_128_wrap_pad(void)
{
return &aes_128_wrap_pad;
}
static const EVP_CIPHER aes_192_wrap_pad = {
NID_id_aes192_wrap_pad,
8, 24, 4, WRAP_FLAGS,
aes_wrap_init_key, aes_wrap_cipher,
NULL,
sizeof(EVP_AES_WRAP_CTX),
NULL,NULL,NULL,NULL };
const EVP_CIPHER *EVP_aes_192_wrap_pad(void)
{
return &aes_192_wrap_pad;
}
static const EVP_CIPHER aes_256_wrap_pad = {
NID_id_aes256_wrap_pad,
8, 32, 4, WRAP_FLAGS,
aes_wrap_init_key, aes_wrap_cipher,
NULL,
sizeof(EVP_AES_WRAP_CTX),
NULL,NULL,NULL,NULL };
const EVP_CIPHER *EVP_aes_256_wrap_pad(void)
{
return &aes_256_wrap_pad;
}
#ifndef OPENSSL_NO_OCB
static int aes_ocb_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
{
EVP_AES_OCB_CTX *octx = c->cipher_data;
EVP_CIPHER_CTX *newc;
EVP_AES_OCB_CTX *new_octx;
switch (type)
{
case EVP_CTRL_INIT:
octx->key_set = 0;
octx->iv_set = 0;
octx->ivlen = c->cipher->iv_len;
octx->iv = c->iv;
octx->taglen = 16;
octx->data_buf_len = 0;
octx->aad_buf_len = 0;
return 1;
case EVP_CTRL_SET_IVLEN:
/* IV len must be 1 to 15 */
if (arg <= 0 || arg > 15)
return 0;
octx->ivlen = arg;
return 1;
case EVP_CTRL_OCB_SET_TAGLEN:
/* Tag len must be 0 to 16 */
if (arg < 0 || arg > 16)
return 0;
octx->taglen = arg;
return 1;
case EVP_CTRL_SET_TAG:
if (arg != octx->taglen || c->encrypt)
return 0;
memcpy(octx->tag, ptr, arg);
return 1;
case EVP_CTRL_GET_TAG:
if (arg != octx->taglen || !c->encrypt)
return 0;
memcpy(ptr, octx->tag, arg);
return 1;
case EVP_CTRL_COPY:
newc = (EVP_CIPHER_CTX *)ptr;
new_octx = newc->cipher_data;
return CRYPTO_ocb128_copy_ctx(&new_octx->ocb, &octx->ocb,
&new_octx->ksenc, &new_octx->ksdec);
default:
return -1;
}
}
static int aes_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
EVP_AES_OCB_CTX *octx = ctx->cipher_data;
if (!iv && !key)
return 1;
if (key)
{
do
{
/* We set both the encrypt and decrypt key here because decrypt
* needs both. We could possibly optimise to remove setting the
* decrypt for an encryption operation.
*/
#ifdef VPAES_CAPABLE
if (VPAES_CAPABLE)
{
vpaes_set_encrypt_key(key,ctx->key_len*8,&octx->ksenc);
vpaes_set_decrypt_key(key,ctx->key_len*8,&octx->ksdec);
if(!CRYPTO_ocb128_init(&octx->ocb,&octx->ksenc,&octx->ksdec,
(block128_f)vpaes_encrypt,(block128_f)vpaes_decrypt))
return 0;
break;
}
#endif
AES_set_encrypt_key(key, ctx->key_len * 8, &octx->ksenc);
AES_set_decrypt_key(key, ctx->key_len * 8, &octx->ksdec);
if(!CRYPTO_ocb128_init(&octx->ocb, &octx->ksenc, &octx->ksdec,
(block128_f)AES_encrypt, (block128_f)AES_decrypt))
return 0;
}
while (0);
/* If we have an iv we can set it directly, otherwise use
* saved IV.
*/
if (iv == NULL && octx->iv_set)
iv = octx->iv;
if (iv)
{
if(CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen) != 1)
return 0;
octx->iv_set = 1;
}
octx->key_set = 1;
}
else
{
/* If key set use IV, otherwise copy */
if (octx->key_set)
CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen);
else
memcpy(octx->iv, iv, octx->ivlen);
octx->iv_set = 1;
}
return 1;
}
static int aes_ocb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t len)
{
unsigned char *buf;
int *buf_len;
int written_len = 0;
size_t trailing_len;
EVP_AES_OCB_CTX *octx = ctx->cipher_data;
/* If IV or Key not set then return error */
if (!octx->iv_set)
return -1;
if (!octx->key_set)
return -1;
if (in)
{
/* Need to ensure we are only passing full blocks to low level OCB
* routines. We do it here rather than in EVP_EncryptUpdate/
* EVP_DecryptUpdate because we need to pass full blocks of AAD too
* and those routines don't support that
*/
/* Are we dealing with AAD or normal data here? */
if (out == NULL)
{
buf = octx->aad_buf;
buf_len = &(octx->aad_buf_len);
}
else
{
buf = octx->data_buf;
buf_len = &(octx->data_buf_len);
}
/* If we've got a partially filled buffer from a previous call then use
* that data first
*/
if(*buf_len)
{
unsigned int remaining;
remaining = 16 - (*buf_len);
if(remaining > len)
{
memcpy(buf+(*buf_len), in, len);
*(buf_len)+=len;
return 0;
}
memcpy(buf+(*buf_len), in, remaining);
/* If we get here we've filled the buffer, so process it */
len -= remaining;
in += remaining;
if (out == NULL)
{
if(!CRYPTO_ocb128_aad(&octx->ocb, buf, 16))
return -1;
}
else if (ctx->encrypt)
{
if(!CRYPTO_ocb128_encrypt(&octx->ocb, buf, out, 16))
return -1;
}
else
{
if(!CRYPTO_ocb128_decrypt(&octx->ocb, buf, out, 16))
return -1;
}
written_len = 16;
*buf_len = 0;
}
/* Do we have a partial block to handle at the end? */
trailing_len = len % 16;
/* If we've got some full blocks to handle, then process these first */
if(len != trailing_len)
{
if (out == NULL)
{
if(!CRYPTO_ocb128_aad(&octx->ocb, in, len-trailing_len))
return -1;
}
else if (ctx->encrypt)
{
if(!CRYPTO_ocb128_encrypt(&octx->ocb, in, out, len-trailing_len))
return -1;
}
else
{
if(!CRYPTO_ocb128_decrypt(&octx->ocb, in, out, len-trailing_len))
return -1;
}
written_len += len-trailing_len;
in += len-trailing_len;
}
/* Handle any trailing partial block */
if(trailing_len)
{
memcpy(buf, in, trailing_len);
*buf_len = trailing_len;
}
return written_len;
}
else
{
/* First of all empty the buffer of any partial block that we might
* have been provided - both for data and AAD
*/
if(octx->data_buf_len)
{
if (ctx->encrypt)
{
if(!CRYPTO_ocb128_encrypt(&octx->ocb, octx->data_buf, out,
octx->data_buf_len))
return -1;
}
else
{
if(!CRYPTO_ocb128_decrypt(&octx->ocb, octx->data_buf, out,
octx->data_buf_len))
return -1;
}
written_len = octx->data_buf_len;
octx->data_buf_len = 0;
}
if(octx->aad_buf_len)
{
if(!CRYPTO_ocb128_aad(&octx->ocb, octx->aad_buf, octx->aad_buf_len))
return -1;
octx->aad_buf_len = 0;
}
/* If decrypting then verify */
if (!ctx->encrypt)
{
if (octx->taglen < 0)
return -1;
if (CRYPTO_ocb128_finish(&octx->ocb,
octx->tag, octx->taglen) != 0)
return -1;
octx->iv_set = 0;
return written_len;
}
/* If encrypting then just get the tag */
if(CRYPTO_ocb128_tag(&octx->ocb, octx->tag, 16) != 1)
return -1;
/* Don't reuse the IV */
octx->iv_set = 0;
return written_len;
}
}
static int aes_ocb_cleanup(EVP_CIPHER_CTX *c)
{
EVP_AES_OCB_CTX *octx = c->cipher_data;
CRYPTO_ocb128_cleanup(&octx->ocb);
return 1;
}
BLOCK_CIPHER_custom(NID_aes,128,16,12,ocb,OCB,CUSTOM_FLAGS)
BLOCK_CIPHER_custom(NID_aes,192,16,12,ocb,OCB,CUSTOM_FLAGS)
BLOCK_CIPHER_custom(NID_aes,256,16,12,ocb,OCB,CUSTOM_FLAGS)
#endif /* OPENSSL_NO_OCB */
#endif
Reference in a new issue View git blame Copy permalink