4cd640f684
Same rationale as the previous commits.
(cherry picked from commit 422196759f)
Removed the winrt-specific parts.
985 lines
32 KiB
C
985 lines
32 KiB
C
/* ====================================================================
|
|
* Copyright (c) 2011-2013 The OpenSSL Project. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* 3. All advertising materials mentioning features or use of this
|
|
* software must display the following acknowledgment:
|
|
* "This product includes software developed by the OpenSSL Project
|
|
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
|
|
*
|
|
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
|
|
* endorse or promote products derived from this software without
|
|
* prior written permission. For written permission, please contact
|
|
* licensing@OpenSSL.org.
|
|
*
|
|
* 5. Products derived from this software may not be called "OpenSSL"
|
|
* nor may "OpenSSL" appear in their names without prior written
|
|
* permission of the OpenSSL Project.
|
|
*
|
|
* 6. Redistributions of any form whatsoever must retain the following
|
|
* acknowledgment:
|
|
* "This product includes software developed by the OpenSSL Project
|
|
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
|
|
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
|
|
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
|
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
* ====================================================================
|
|
*/
|
|
|
|
#include <openssl/opensslconf.h>
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#if !defined(OPENSSL_NO_AES) && !defined(OPENSSL_NO_SHA256)
|
|
|
|
# include <openssl/evp.h>
|
|
# include <openssl/objects.h>
|
|
# include <openssl/aes.h>
|
|
# include <openssl/sha.h>
|
|
# include <openssl/rand.h>
|
|
# include "modes_lcl.h"
|
|
# include "constant_time_locl.h"
|
|
|
|
# ifndef EVP_CIPH_FLAG_AEAD_CIPHER
|
|
# define EVP_CIPH_FLAG_AEAD_CIPHER 0x200000
|
|
# define EVP_CTRL_AEAD_TLS1_AAD 0x16
|
|
# define EVP_CTRL_AEAD_SET_MAC_KEY 0x17
|
|
# endif
|
|
|
|
# if !defined(EVP_CIPH_FLAG_DEFAULT_ASN1)
|
|
# define EVP_CIPH_FLAG_DEFAULT_ASN1 0
|
|
# endif
|
|
|
|
# if !defined(EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK)
|
|
# define EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK 0
|
|
# endif
|
|
|
|
# define TLS1_1_VERSION 0x0302
|
|
|
|
typedef struct {
|
|
AES_KEY ks;
|
|
SHA256_CTX head, tail, md;
|
|
size_t payload_length; /* AAD length in decrypt case */
|
|
union {
|
|
unsigned int tls_ver;
|
|
unsigned char tls_aad[16]; /* 13 used */
|
|
} aux;
|
|
} EVP_AES_HMAC_SHA256;
|
|
|
|
# define NO_PAYLOAD_LENGTH ((size_t)-1)
|
|
|
|
# if defined(AES_ASM) && ( \
|
|
defined(__x86_64) || defined(__x86_64__) || \
|
|
defined(_M_AMD64) || defined(_M_X64) || \
|
|
defined(__INTEL__) )
|
|
|
|
extern unsigned int OPENSSL_ia32cap_P[];
|
|
# define AESNI_CAPABLE (1<<(57-32))
|
|
|
|
int aesni_set_encrypt_key(const unsigned char *userKey, int bits,
|
|
AES_KEY *key);
|
|
int aesni_set_decrypt_key(const unsigned char *userKey, int bits,
|
|
AES_KEY *key);
|
|
|
|
void aesni_cbc_encrypt(const unsigned char *in,
|
|
unsigned char *out,
|
|
size_t length,
|
|
const AES_KEY *key, unsigned char *ivec, int enc);
|
|
|
|
int aesni_cbc_sha256_enc(const void *inp, void *out, size_t blocks,
|
|
const AES_KEY *key, unsigned char iv[16],
|
|
SHA256_CTX *ctx, const void *in0);
|
|
|
|
# define data(ctx) ((EVP_AES_HMAC_SHA256 *)(ctx)->cipher_data)
|
|
|
|
static int aesni_cbc_hmac_sha256_init_key(EVP_CIPHER_CTX *ctx,
|
|
const unsigned char *inkey,
|
|
const unsigned char *iv, int enc)
|
|
{
|
|
EVP_AES_HMAC_SHA256 *key = data(ctx);
|
|
int ret;
|
|
|
|
if (enc)
|
|
memset(&key->ks, 0, sizeof(key->ks.rd_key)),
|
|
ret = aesni_set_encrypt_key(inkey, ctx->key_len * 8, &key->ks);
|
|
else
|
|
ret = aesni_set_decrypt_key(inkey, ctx->key_len * 8, &key->ks);
|
|
|
|
SHA256_Init(&key->head); /* handy when benchmarking */
|
|
key->tail = key->head;
|
|
key->md = key->head;
|
|
|
|
key->payload_length = NO_PAYLOAD_LENGTH;
|
|
|
|
return ret < 0 ? 0 : 1;
|
|
}
|
|
|
|
# define STITCHED_CALL
|
|
|
|
# if !defined(STITCHED_CALL)
|
|
# define aes_off 0
|
|
# endif
|
|
|
|
void sha256_block_data_order(void *c, const void *p, size_t len);
|
|
|
|
static void sha256_update(SHA256_CTX *c, const void *data, size_t len)
|
|
{
|
|
const unsigned char *ptr = data;
|
|
size_t res;
|
|
|
|
if ((res = c->num)) {
|
|
res = SHA256_CBLOCK - res;
|
|
if (len < res)
|
|
res = len;
|
|
SHA256_Update(c, ptr, res);
|
|
ptr += res;
|
|
len -= res;
|
|
}
|
|
|
|
res = len % SHA256_CBLOCK;
|
|
len -= res;
|
|
|
|
if (len) {
|
|
sha256_block_data_order(c, ptr, len / SHA256_CBLOCK);
|
|
|
|
ptr += len;
|
|
c->Nh += len >> 29;
|
|
c->Nl += len <<= 3;
|
|
if (c->Nl < (unsigned int)len)
|
|
c->Nh++;
|
|
}
|
|
|
|
if (res)
|
|
SHA256_Update(c, ptr, res);
|
|
}
|
|
|
|
# ifdef SHA256_Update
|
|
# undef SHA256_Update
|
|
# endif
|
|
# define SHA256_Update sha256_update
|
|
|
|
# if !defined(OPENSSL_NO_MULTIBLOCK) && EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK
|
|
|
|
typedef struct {
|
|
unsigned int A[8], B[8], C[8], D[8], E[8], F[8], G[8], H[8];
|
|
} SHA256_MB_CTX;
|
|
typedef struct {
|
|
const unsigned char *ptr;
|
|
int blocks;
|
|
} HASH_DESC;
|
|
|
|
void sha256_multi_block(SHA256_MB_CTX *, const HASH_DESC *, int);
|
|
|
|
typedef struct {
|
|
const unsigned char *inp;
|
|
unsigned char *out;
|
|
int blocks;
|
|
u64 iv[2];
|
|
} CIPH_DESC;
|
|
|
|
void aesni_multi_cbc_encrypt(CIPH_DESC *, void *, int);
|
|
|
|
static size_t tls1_1_multi_block_encrypt(EVP_AES_HMAC_SHA256 *key,
|
|
unsigned char *out,
|
|
const unsigned char *inp,
|
|
size_t inp_len, int n4x)
|
|
{ /* n4x is 1 or 2 */
|
|
HASH_DESC hash_d[8], edges[8];
|
|
CIPH_DESC ciph_d[8];
|
|
unsigned char storage[sizeof(SHA256_MB_CTX) + 32];
|
|
union {
|
|
u64 q[16];
|
|
u32 d[32];
|
|
u8 c[128];
|
|
} blocks[8];
|
|
SHA256_MB_CTX *ctx;
|
|
unsigned int frag, last, packlen, i, x4 = 4 * n4x, minblocks, processed =
|
|
0;
|
|
size_t ret = 0;
|
|
u8 *IVs;
|
|
# if defined(BSWAP8)
|
|
u64 seqnum;
|
|
# endif
|
|
|
|
/* ask for IVs in bulk */
|
|
if (RAND_bytes((IVs = blocks[0].c), 16 * x4) <= 0)
|
|
return 0;
|
|
|
|
/* align */
|
|
ctx = (SHA256_MB_CTX *) (storage + 32 - ((size_t)storage % 32));
|
|
|
|
frag = (unsigned int)inp_len >> (1 + n4x);
|
|
last = (unsigned int)inp_len + frag - (frag << (1 + n4x));
|
|
if (last > frag && ((last + 13 + 9) % 64) < (x4 - 1)) {
|
|
frag++;
|
|
last -= x4 - 1;
|
|
}
|
|
|
|
packlen = 5 + 16 + ((frag + 32 + 16) & -16);
|
|
|
|
/* populate descriptors with pointers and IVs */
|
|
hash_d[0].ptr = inp;
|
|
ciph_d[0].inp = inp;
|
|
/* 5+16 is place for header and explicit IV */
|
|
ciph_d[0].out = out + 5 + 16;
|
|
memcpy(ciph_d[0].out - 16, IVs, 16);
|
|
memcpy(ciph_d[0].iv, IVs, 16);
|
|
IVs += 16;
|
|
|
|
for (i = 1; i < x4; i++) {
|
|
ciph_d[i].inp = hash_d[i].ptr = hash_d[i - 1].ptr + frag;
|
|
ciph_d[i].out = ciph_d[i - 1].out + packlen;
|
|
memcpy(ciph_d[i].out - 16, IVs, 16);
|
|
memcpy(ciph_d[i].iv, IVs, 16);
|
|
IVs += 16;
|
|
}
|
|
|
|
# if defined(BSWAP8)
|
|
memcpy(blocks[0].c, key->md.data, 8);
|
|
seqnum = BSWAP8(blocks[0].q[0]);
|
|
# endif
|
|
for (i = 0; i < x4; i++) {
|
|
unsigned int len = (i == (x4 - 1) ? last : frag);
|
|
# if !defined(BSWAP8)
|
|
unsigned int carry, j;
|
|
# endif
|
|
|
|
ctx->A[i] = key->md.h[0];
|
|
ctx->B[i] = key->md.h[1];
|
|
ctx->C[i] = key->md.h[2];
|
|
ctx->D[i] = key->md.h[3];
|
|
ctx->E[i] = key->md.h[4];
|
|
ctx->F[i] = key->md.h[5];
|
|
ctx->G[i] = key->md.h[6];
|
|
ctx->H[i] = key->md.h[7];
|
|
|
|
/* fix seqnum */
|
|
# if defined(BSWAP8)
|
|
blocks[i].q[0] = BSWAP8(seqnum + i);
|
|
# else
|
|
for (carry = i, j = 8; j--;) {
|
|
blocks[i].c[j] = ((u8 *)key->md.data)[j] + carry;
|
|
carry = (blocks[i].c[j] - carry) >> (sizeof(carry) * 8 - 1);
|
|
}
|
|
# endif
|
|
blocks[i].c[8] = ((u8 *)key->md.data)[8];
|
|
blocks[i].c[9] = ((u8 *)key->md.data)[9];
|
|
blocks[i].c[10] = ((u8 *)key->md.data)[10];
|
|
/* fix length */
|
|
blocks[i].c[11] = (u8)(len >> 8);
|
|
blocks[i].c[12] = (u8)(len);
|
|
|
|
memcpy(blocks[i].c + 13, hash_d[i].ptr, 64 - 13);
|
|
hash_d[i].ptr += 64 - 13;
|
|
hash_d[i].blocks = (len - (64 - 13)) / 64;
|
|
|
|
edges[i].ptr = blocks[i].c;
|
|
edges[i].blocks = 1;
|
|
}
|
|
|
|
/* hash 13-byte headers and first 64-13 bytes of inputs */
|
|
sha256_multi_block(ctx, edges, n4x);
|
|
/* hash bulk inputs */
|
|
# define MAXCHUNKSIZE 2048
|
|
# if MAXCHUNKSIZE%64
|
|
# error "MAXCHUNKSIZE is not divisible by 64"
|
|
# elif MAXCHUNKSIZE
|
|
/*
|
|
* goal is to minimize pressure on L1 cache by moving in shorter steps,
|
|
* so that hashed data is still in the cache by the time we encrypt it
|
|
*/
|
|
minblocks = ((frag <= last ? frag : last) - (64 - 13)) / 64;
|
|
if (minblocks > MAXCHUNKSIZE / 64) {
|
|
for (i = 0; i < x4; i++) {
|
|
edges[i].ptr = hash_d[i].ptr;
|
|
edges[i].blocks = MAXCHUNKSIZE / 64;
|
|
ciph_d[i].blocks = MAXCHUNKSIZE / 16;
|
|
}
|
|
do {
|
|
sha256_multi_block(ctx, edges, n4x);
|
|
aesni_multi_cbc_encrypt(ciph_d, &key->ks, n4x);
|
|
|
|
for (i = 0; i < x4; i++) {
|
|
edges[i].ptr = hash_d[i].ptr += MAXCHUNKSIZE;
|
|
hash_d[i].blocks -= MAXCHUNKSIZE / 64;
|
|
edges[i].blocks = MAXCHUNKSIZE / 64;
|
|
ciph_d[i].inp += MAXCHUNKSIZE;
|
|
ciph_d[i].out += MAXCHUNKSIZE;
|
|
ciph_d[i].blocks = MAXCHUNKSIZE / 16;
|
|
memcpy(ciph_d[i].iv, ciph_d[i].out - 16, 16);
|
|
}
|
|
processed += MAXCHUNKSIZE;
|
|
minblocks -= MAXCHUNKSIZE / 64;
|
|
} while (minblocks > MAXCHUNKSIZE / 64);
|
|
}
|
|
# endif
|
|
# undef MAXCHUNKSIZE
|
|
sha256_multi_block(ctx, hash_d, n4x);
|
|
|
|
memset(blocks, 0, sizeof(blocks));
|
|
for (i = 0; i < x4; i++) {
|
|
unsigned int len = (i == (x4 - 1) ? last : frag),
|
|
off = hash_d[i].blocks * 64;
|
|
const unsigned char *ptr = hash_d[i].ptr + off;
|
|
|
|
off = (len - processed) - (64 - 13) - off; /* remainder actually */
|
|
memcpy(blocks[i].c, ptr, off);
|
|
blocks[i].c[off] = 0x80;
|
|
len += 64 + 13; /* 64 is HMAC header */
|
|
len *= 8; /* convert to bits */
|
|
if (off < (64 - 8)) {
|
|
# ifdef BSWAP4
|
|
blocks[i].d[15] = BSWAP4(len);
|
|
# else
|
|
PUTU32(blocks[i].c + 60, len);
|
|
# endif
|
|
edges[i].blocks = 1;
|
|
} else {
|
|
# ifdef BSWAP4
|
|
blocks[i].d[31] = BSWAP4(len);
|
|
# else
|
|
PUTU32(blocks[i].c + 124, len);
|
|
# endif
|
|
edges[i].blocks = 2;
|
|
}
|
|
edges[i].ptr = blocks[i].c;
|
|
}
|
|
|
|
/* hash input tails and finalize */
|
|
sha256_multi_block(ctx, edges, n4x);
|
|
|
|
memset(blocks, 0, sizeof(blocks));
|
|
for (i = 0; i < x4; i++) {
|
|
# ifdef BSWAP4
|
|
blocks[i].d[0] = BSWAP4(ctx->A[i]);
|
|
ctx->A[i] = key->tail.h[0];
|
|
blocks[i].d[1] = BSWAP4(ctx->B[i]);
|
|
ctx->B[i] = key->tail.h[1];
|
|
blocks[i].d[2] = BSWAP4(ctx->C[i]);
|
|
ctx->C[i] = key->tail.h[2];
|
|
blocks[i].d[3] = BSWAP4(ctx->D[i]);
|
|
ctx->D[i] = key->tail.h[3];
|
|
blocks[i].d[4] = BSWAP4(ctx->E[i]);
|
|
ctx->E[i] = key->tail.h[4];
|
|
blocks[i].d[5] = BSWAP4(ctx->F[i]);
|
|
ctx->F[i] = key->tail.h[5];
|
|
blocks[i].d[6] = BSWAP4(ctx->G[i]);
|
|
ctx->G[i] = key->tail.h[6];
|
|
blocks[i].d[7] = BSWAP4(ctx->H[i]);
|
|
ctx->H[i] = key->tail.h[7];
|
|
blocks[i].c[32] = 0x80;
|
|
blocks[i].d[15] = BSWAP4((64 + 32) * 8);
|
|
# else
|
|
PUTU32(blocks[i].c + 0, ctx->A[i]);
|
|
ctx->A[i] = key->tail.h[0];
|
|
PUTU32(blocks[i].c + 4, ctx->B[i]);
|
|
ctx->B[i] = key->tail.h[1];
|
|
PUTU32(blocks[i].c + 8, ctx->C[i]);
|
|
ctx->C[i] = key->tail.h[2];
|
|
PUTU32(blocks[i].c + 12, ctx->D[i]);
|
|
ctx->D[i] = key->tail.h[3];
|
|
PUTU32(blocks[i].c + 16, ctx->E[i]);
|
|
ctx->E[i] = key->tail.h[4];
|
|
PUTU32(blocks[i].c + 20, ctx->F[i]);
|
|
ctx->F[i] = key->tail.h[5];
|
|
PUTU32(blocks[i].c + 24, ctx->G[i]);
|
|
ctx->G[i] = key->tail.h[6];
|
|
PUTU32(blocks[i].c + 28, ctx->H[i]);
|
|
ctx->H[i] = key->tail.h[7];
|
|
blocks[i].c[32] = 0x80;
|
|
PUTU32(blocks[i].c + 60, (64 + 32) * 8);
|
|
# endif
|
|
edges[i].ptr = blocks[i].c;
|
|
edges[i].blocks = 1;
|
|
}
|
|
|
|
/* finalize MACs */
|
|
sha256_multi_block(ctx, edges, n4x);
|
|
|
|
for (i = 0; i < x4; i++) {
|
|
unsigned int len = (i == (x4 - 1) ? last : frag), pad, j;
|
|
unsigned char *out0 = out;
|
|
|
|
memcpy(ciph_d[i].out, ciph_d[i].inp, len - processed);
|
|
ciph_d[i].inp = ciph_d[i].out;
|
|
|
|
out += 5 + 16 + len;
|
|
|
|
/* write MAC */
|
|
PUTU32(out + 0, ctx->A[i]);
|
|
PUTU32(out + 4, ctx->B[i]);
|
|
PUTU32(out + 8, ctx->C[i]);
|
|
PUTU32(out + 12, ctx->D[i]);
|
|
PUTU32(out + 16, ctx->E[i]);
|
|
PUTU32(out + 20, ctx->F[i]);
|
|
PUTU32(out + 24, ctx->G[i]);
|
|
PUTU32(out + 28, ctx->H[i]);
|
|
out += 32;
|
|
len += 32;
|
|
|
|
/* pad */
|
|
pad = 15 - len % 16;
|
|
for (j = 0; j <= pad; j++)
|
|
*(out++) = pad;
|
|
len += pad + 1;
|
|
|
|
ciph_d[i].blocks = (len - processed) / 16;
|
|
len += 16; /* account for explicit iv */
|
|
|
|
/* arrange header */
|
|
out0[0] = ((u8 *)key->md.data)[8];
|
|
out0[1] = ((u8 *)key->md.data)[9];
|
|
out0[2] = ((u8 *)key->md.data)[10];
|
|
out0[3] = (u8)(len >> 8);
|
|
out0[4] = (u8)(len);
|
|
|
|
ret += len + 5;
|
|
inp += frag;
|
|
}
|
|
|
|
aesni_multi_cbc_encrypt(ciph_d, &key->ks, n4x);
|
|
|
|
OPENSSL_cleanse(blocks, sizeof(blocks));
|
|
OPENSSL_cleanse(ctx, sizeof(*ctx));
|
|
|
|
return ret;
|
|
}
|
|
# endif
|
|
|
|
static int aesni_cbc_hmac_sha256_cipher(EVP_CIPHER_CTX *ctx,
|
|
unsigned char *out,
|
|
const unsigned char *in, size_t len)
|
|
{
|
|
EVP_AES_HMAC_SHA256 *key = data(ctx);
|
|
unsigned int l;
|
|
size_t plen = key->payload_length, iv = 0, /* explicit IV in TLS 1.1 and
|
|
* later */
|
|
sha_off = 0;
|
|
# if defined(STITCHED_CALL)
|
|
size_t aes_off = 0, blocks;
|
|
|
|
sha_off = SHA256_CBLOCK - key->md.num;
|
|
# endif
|
|
|
|
key->payload_length = NO_PAYLOAD_LENGTH;
|
|
|
|
if (len % AES_BLOCK_SIZE)
|
|
return 0;
|
|
|
|
if (ctx->encrypt) {
|
|
if (plen == NO_PAYLOAD_LENGTH)
|
|
plen = len;
|
|
else if (len !=
|
|
((plen + SHA256_DIGEST_LENGTH +
|
|
AES_BLOCK_SIZE) & -AES_BLOCK_SIZE))
|
|
return 0;
|
|
else if (key->aux.tls_ver >= TLS1_1_VERSION)
|
|
iv = AES_BLOCK_SIZE;
|
|
|
|
# if defined(STITCHED_CALL)
|
|
/*
|
|
* Assembly stitch handles AVX-capable processors, but its
|
|
* performance is not optimal on AMD Jaguar, ~40% worse, for
|
|
* unknown reasons. Incidentally processor in question supports
|
|
* AVX, but not AMD-specific XOP extension, which can be used
|
|
* to identify it and avoid stitch invocation. So that after we
|
|
* establish that current CPU supports AVX, we even see if it's
|
|
* either even XOP-capable Bulldozer-based or GenuineIntel one.
|
|
*/
|
|
if (OPENSSL_ia32cap_P[1] & (1 << (60 - 32)) && /* AVX? */
|
|
((OPENSSL_ia32cap_P[1] & (1 << (43 - 32))) /* XOP? */
|
|
| (OPENSSL_ia32cap_P[0] & (1<<30))) && /* "Intel CPU"? */
|
|
plen > (sha_off + iv) &&
|
|
(blocks = (plen - (sha_off + iv)) / SHA256_CBLOCK)) {
|
|
SHA256_Update(&key->md, in + iv, sha_off);
|
|
|
|
(void)aesni_cbc_sha256_enc(in, out, blocks, &key->ks,
|
|
ctx->iv, &key->md, in + iv + sha_off);
|
|
blocks *= SHA256_CBLOCK;
|
|
aes_off += blocks;
|
|
sha_off += blocks;
|
|
key->md.Nh += blocks >> 29;
|
|
key->md.Nl += blocks <<= 3;
|
|
if (key->md.Nl < (unsigned int)blocks)
|
|
key->md.Nh++;
|
|
} else {
|
|
sha_off = 0;
|
|
}
|
|
# endif
|
|
sha_off += iv;
|
|
SHA256_Update(&key->md, in + sha_off, plen - sha_off);
|
|
|
|
if (plen != len) { /* "TLS" mode of operation */
|
|
if (in != out)
|
|
memcpy(out + aes_off, in + aes_off, plen - aes_off);
|
|
|
|
/* calculate HMAC and append it to payload */
|
|
SHA256_Final(out + plen, &key->md);
|
|
key->md = key->tail;
|
|
SHA256_Update(&key->md, out + plen, SHA256_DIGEST_LENGTH);
|
|
SHA256_Final(out + plen, &key->md);
|
|
|
|
/* pad the payload|hmac */
|
|
plen += SHA256_DIGEST_LENGTH;
|
|
for (l = len - plen - 1; plen < len; plen++)
|
|
out[plen] = l;
|
|
/* encrypt HMAC|padding at once */
|
|
aesni_cbc_encrypt(out + aes_off, out + aes_off, len - aes_off,
|
|
&key->ks, ctx->iv, 1);
|
|
} else {
|
|
aesni_cbc_encrypt(in + aes_off, out + aes_off, len - aes_off,
|
|
&key->ks, ctx->iv, 1);
|
|
}
|
|
} else {
|
|
union {
|
|
unsigned int u[SHA256_DIGEST_LENGTH / sizeof(unsigned int)];
|
|
unsigned char c[64 + SHA256_DIGEST_LENGTH];
|
|
} mac, *pmac;
|
|
|
|
/* arrange cache line alignment */
|
|
pmac = (void *)(((size_t)mac.c + 63) & ((size_t)0 - 64));
|
|
|
|
/* decrypt HMAC|padding at once */
|
|
aesni_cbc_encrypt(in, out, len, &key->ks, ctx->iv, 0);
|
|
|
|
if (plen != NO_PAYLOAD_LENGTH) { /* "TLS" mode of operation */
|
|
size_t inp_len, mask, j, i;
|
|
unsigned int res, maxpad, pad, bitlen;
|
|
int ret = 1;
|
|
union {
|
|
unsigned int u[SHA_LBLOCK];
|
|
unsigned char c[SHA256_CBLOCK];
|
|
} *data = (void *)key->md.data;
|
|
|
|
if ((key->aux.tls_aad[plen - 4] << 8 | key->aux.tls_aad[plen - 3])
|
|
>= TLS1_1_VERSION)
|
|
iv = AES_BLOCK_SIZE;
|
|
|
|
if (len < (iv + SHA256_DIGEST_LENGTH + 1))
|
|
return 0;
|
|
|
|
/* omit explicit iv */
|
|
out += iv;
|
|
len -= iv;
|
|
|
|
/* figure out payload length */
|
|
pad = out[len - 1];
|
|
maxpad = len - (SHA256_DIGEST_LENGTH + 1);
|
|
maxpad |= (255 - maxpad) >> (sizeof(maxpad) * 8 - 8);
|
|
maxpad &= 255;
|
|
|
|
ret &= constant_time_ge(maxpad, pad);
|
|
|
|
inp_len = len - (SHA256_DIGEST_LENGTH + pad + 1);
|
|
mask = (0 - ((inp_len - len) >> (sizeof(inp_len) * 8 - 1)));
|
|
inp_len &= mask;
|
|
ret &= (int)mask;
|
|
|
|
key->aux.tls_aad[plen - 2] = inp_len >> 8;
|
|
key->aux.tls_aad[plen - 1] = inp_len;
|
|
|
|
/* calculate HMAC */
|
|
key->md = key->head;
|
|
SHA256_Update(&key->md, key->aux.tls_aad, plen);
|
|
|
|
# if 1
|
|
len -= SHA256_DIGEST_LENGTH; /* amend mac */
|
|
if (len >= (256 + SHA256_CBLOCK)) {
|
|
j = (len - (256 + SHA256_CBLOCK)) & (0 - SHA256_CBLOCK);
|
|
j += SHA256_CBLOCK - key->md.num;
|
|
SHA256_Update(&key->md, out, j);
|
|
out += j;
|
|
len -= j;
|
|
inp_len -= j;
|
|
}
|
|
|
|
/* but pretend as if we hashed padded payload */
|
|
bitlen = key->md.Nl + (inp_len << 3); /* at most 18 bits */
|
|
# ifdef BSWAP4
|
|
bitlen = BSWAP4(bitlen);
|
|
# else
|
|
mac.c[0] = 0;
|
|
mac.c[1] = (unsigned char)(bitlen >> 16);
|
|
mac.c[2] = (unsigned char)(bitlen >> 8);
|
|
mac.c[3] = (unsigned char)bitlen;
|
|
bitlen = mac.u[0];
|
|
# endif
|
|
|
|
pmac->u[0] = 0;
|
|
pmac->u[1] = 0;
|
|
pmac->u[2] = 0;
|
|
pmac->u[3] = 0;
|
|
pmac->u[4] = 0;
|
|
pmac->u[5] = 0;
|
|
pmac->u[6] = 0;
|
|
pmac->u[7] = 0;
|
|
|
|
for (res = key->md.num, j = 0; j < len; j++) {
|
|
size_t c = out[j];
|
|
mask = (j - inp_len) >> (sizeof(j) * 8 - 8);
|
|
c &= mask;
|
|
c |= 0x80 & ~mask & ~((inp_len - j) >> (sizeof(j) * 8 - 8));
|
|
data->c[res++] = (unsigned char)c;
|
|
|
|
if (res != SHA256_CBLOCK)
|
|
continue;
|
|
|
|
/* j is not incremented yet */
|
|
mask = 0 - ((inp_len + 7 - j) >> (sizeof(j) * 8 - 1));
|
|
data->u[SHA_LBLOCK - 1] |= bitlen & mask;
|
|
sha256_block_data_order(&key->md, data, 1);
|
|
mask &= 0 - ((j - inp_len - 72) >> (sizeof(j) * 8 - 1));
|
|
pmac->u[0] |= key->md.h[0] & mask;
|
|
pmac->u[1] |= key->md.h[1] & mask;
|
|
pmac->u[2] |= key->md.h[2] & mask;
|
|
pmac->u[3] |= key->md.h[3] & mask;
|
|
pmac->u[4] |= key->md.h[4] & mask;
|
|
pmac->u[5] |= key->md.h[5] & mask;
|
|
pmac->u[6] |= key->md.h[6] & mask;
|
|
pmac->u[7] |= key->md.h[7] & mask;
|
|
res = 0;
|
|
}
|
|
|
|
for (i = res; i < SHA256_CBLOCK; i++, j++)
|
|
data->c[i] = 0;
|
|
|
|
if (res > SHA256_CBLOCK - 8) {
|
|
mask = 0 - ((inp_len + 8 - j) >> (sizeof(j) * 8 - 1));
|
|
data->u[SHA_LBLOCK - 1] |= bitlen & mask;
|
|
sha256_block_data_order(&key->md, data, 1);
|
|
mask &= 0 - ((j - inp_len - 73) >> (sizeof(j) * 8 - 1));
|
|
pmac->u[0] |= key->md.h[0] & mask;
|
|
pmac->u[1] |= key->md.h[1] & mask;
|
|
pmac->u[2] |= key->md.h[2] & mask;
|
|
pmac->u[3] |= key->md.h[3] & mask;
|
|
pmac->u[4] |= key->md.h[4] & mask;
|
|
pmac->u[5] |= key->md.h[5] & mask;
|
|
pmac->u[6] |= key->md.h[6] & mask;
|
|
pmac->u[7] |= key->md.h[7] & mask;
|
|
|
|
memset(data, 0, SHA256_CBLOCK);
|
|
j += 64;
|
|
}
|
|
data->u[SHA_LBLOCK - 1] = bitlen;
|
|
sha256_block_data_order(&key->md, data, 1);
|
|
mask = 0 - ((j - inp_len - 73) >> (sizeof(j) * 8 - 1));
|
|
pmac->u[0] |= key->md.h[0] & mask;
|
|
pmac->u[1] |= key->md.h[1] & mask;
|
|
pmac->u[2] |= key->md.h[2] & mask;
|
|
pmac->u[3] |= key->md.h[3] & mask;
|
|
pmac->u[4] |= key->md.h[4] & mask;
|
|
pmac->u[5] |= key->md.h[5] & mask;
|
|
pmac->u[6] |= key->md.h[6] & mask;
|
|
pmac->u[7] |= key->md.h[7] & mask;
|
|
|
|
# ifdef BSWAP4
|
|
pmac->u[0] = BSWAP4(pmac->u[0]);
|
|
pmac->u[1] = BSWAP4(pmac->u[1]);
|
|
pmac->u[2] = BSWAP4(pmac->u[2]);
|
|
pmac->u[3] = BSWAP4(pmac->u[3]);
|
|
pmac->u[4] = BSWAP4(pmac->u[4]);
|
|
pmac->u[5] = BSWAP4(pmac->u[5]);
|
|
pmac->u[6] = BSWAP4(pmac->u[6]);
|
|
pmac->u[7] = BSWAP4(pmac->u[7]);
|
|
# else
|
|
for (i = 0; i < 8; i++) {
|
|
res = pmac->u[i];
|
|
pmac->c[4 * i + 0] = (unsigned char)(res >> 24);
|
|
pmac->c[4 * i + 1] = (unsigned char)(res >> 16);
|
|
pmac->c[4 * i + 2] = (unsigned char)(res >> 8);
|
|
pmac->c[4 * i + 3] = (unsigned char)res;
|
|
}
|
|
# endif
|
|
len += SHA256_DIGEST_LENGTH;
|
|
# else
|
|
SHA256_Update(&key->md, out, inp_len);
|
|
res = key->md.num;
|
|
SHA256_Final(pmac->c, &key->md);
|
|
|
|
{
|
|
unsigned int inp_blocks, pad_blocks;
|
|
|
|
/* but pretend as if we hashed padded payload */
|
|
inp_blocks =
|
|
1 + ((SHA256_CBLOCK - 9 - res) >> (sizeof(res) * 8 - 1));
|
|
res += (unsigned int)(len - inp_len);
|
|
pad_blocks = res / SHA256_CBLOCK;
|
|
res %= SHA256_CBLOCK;
|
|
pad_blocks +=
|
|
1 + ((SHA256_CBLOCK - 9 - res) >> (sizeof(res) * 8 - 1));
|
|
for (; inp_blocks < pad_blocks; inp_blocks++)
|
|
sha1_block_data_order(&key->md, data, 1);
|
|
}
|
|
# endif
|
|
key->md = key->tail;
|
|
SHA256_Update(&key->md, pmac->c, SHA256_DIGEST_LENGTH);
|
|
SHA256_Final(pmac->c, &key->md);
|
|
|
|
/* verify HMAC */
|
|
out += inp_len;
|
|
len -= inp_len;
|
|
# if 1
|
|
{
|
|
unsigned char *p =
|
|
out + len - 1 - maxpad - SHA256_DIGEST_LENGTH;
|
|
size_t off = out - p;
|
|
unsigned int c, cmask;
|
|
|
|
maxpad += SHA256_DIGEST_LENGTH;
|
|
for (res = 0, i = 0, j = 0; j < maxpad; j++) {
|
|
c = p[j];
|
|
cmask =
|
|
((int)(j - off - SHA256_DIGEST_LENGTH)) >>
|
|
(sizeof(int) * 8 - 1);
|
|
res |= (c ^ pad) & ~cmask; /* ... and padding */
|
|
cmask &= ((int)(off - 1 - j)) >> (sizeof(int) * 8 - 1);
|
|
res |= (c ^ pmac->c[i]) & cmask;
|
|
i += 1 & cmask;
|
|
}
|
|
maxpad -= SHA256_DIGEST_LENGTH;
|
|
|
|
res = 0 - ((0 - res) >> (sizeof(res) * 8 - 1));
|
|
ret &= (int)~res;
|
|
}
|
|
# else
|
|
for (res = 0, i = 0; i < SHA256_DIGEST_LENGTH; i++)
|
|
res |= out[i] ^ pmac->c[i];
|
|
res = 0 - ((0 - res) >> (sizeof(res) * 8 - 1));
|
|
ret &= (int)~res;
|
|
|
|
/* verify padding */
|
|
pad = (pad & ~res) | (maxpad & res);
|
|
out = out + len - 1 - pad;
|
|
for (res = 0, i = 0; i < pad; i++)
|
|
res |= out[i] ^ pad;
|
|
|
|
res = (0 - res) >> (sizeof(res) * 8 - 1);
|
|
ret &= (int)~res;
|
|
# endif
|
|
return ret;
|
|
} else {
|
|
SHA256_Update(&key->md, out, len);
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int aesni_cbc_hmac_sha256_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg,
|
|
void *ptr)
|
|
{
|
|
EVP_AES_HMAC_SHA256 *key = data(ctx);
|
|
|
|
switch (type) {
|
|
case EVP_CTRL_AEAD_SET_MAC_KEY:
|
|
{
|
|
unsigned int i;
|
|
unsigned char hmac_key[64];
|
|
|
|
memset(hmac_key, 0, sizeof(hmac_key));
|
|
|
|
if (arg > (int)sizeof(hmac_key)) {
|
|
SHA256_Init(&key->head);
|
|
SHA256_Update(&key->head, ptr, arg);
|
|
SHA256_Final(hmac_key, &key->head);
|
|
} else {
|
|
memcpy(hmac_key, ptr, arg);
|
|
}
|
|
|
|
for (i = 0; i < sizeof(hmac_key); i++)
|
|
hmac_key[i] ^= 0x36; /* ipad */
|
|
SHA256_Init(&key->head);
|
|
SHA256_Update(&key->head, hmac_key, sizeof(hmac_key));
|
|
|
|
for (i = 0; i < sizeof(hmac_key); i++)
|
|
hmac_key[i] ^= 0x36 ^ 0x5c; /* opad */
|
|
SHA256_Init(&key->tail);
|
|
SHA256_Update(&key->tail, hmac_key, sizeof(hmac_key));
|
|
|
|
OPENSSL_cleanse(hmac_key, sizeof(hmac_key));
|
|
|
|
return 1;
|
|
}
|
|
case EVP_CTRL_AEAD_TLS1_AAD:
|
|
{
|
|
unsigned char *p = ptr;
|
|
unsigned int len = p[arg - 2] << 8 | p[arg - 1];
|
|
|
|
if (arg != EVP_AEAD_TLS1_AAD_LEN)
|
|
return -1;
|
|
|
|
if (ctx->encrypt) {
|
|
key->payload_length = len;
|
|
if ((key->aux.tls_ver =
|
|
p[arg - 4] << 8 | p[arg - 3]) >= TLS1_1_VERSION) {
|
|
len -= AES_BLOCK_SIZE;
|
|
p[arg - 2] = len >> 8;
|
|
p[arg - 1] = len;
|
|
}
|
|
key->md = key->head;
|
|
SHA256_Update(&key->md, p, arg);
|
|
|
|
return (int)(((len + SHA256_DIGEST_LENGTH +
|
|
AES_BLOCK_SIZE) & -AES_BLOCK_SIZE)
|
|
- len);
|
|
} else {
|
|
memcpy(key->aux.tls_aad, ptr, arg);
|
|
key->payload_length = arg;
|
|
|
|
return SHA256_DIGEST_LENGTH;
|
|
}
|
|
}
|
|
# if !defined(OPENSSL_NO_MULTIBLOCK) && EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK
|
|
case EVP_CTRL_TLS1_1_MULTIBLOCK_MAX_BUFSIZE:
|
|
return (int)(5 + 16 + ((arg + 32 + 16) & -16));
|
|
case EVP_CTRL_TLS1_1_MULTIBLOCK_AAD:
|
|
{
|
|
EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param =
|
|
(EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *) ptr;
|
|
unsigned int n4x = 1, x4;
|
|
unsigned int frag, last, packlen, inp_len;
|
|
|
|
if (arg < (int)sizeof(EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM))
|
|
return -1;
|
|
|
|
inp_len = param->inp[11] << 8 | param->inp[12];
|
|
|
|
if (ctx->encrypt) {
|
|
if ((param->inp[9] << 8 | param->inp[10]) < TLS1_1_VERSION)
|
|
return -1;
|
|
|
|
if (inp_len) {
|
|
if (inp_len < 4096)
|
|
return 0; /* too short */
|
|
|
|
if (inp_len >= 8192 && OPENSSL_ia32cap_P[2] & (1 << 5))
|
|
n4x = 2; /* AVX2 */
|
|
} else if ((n4x = param->interleave / 4) && n4x <= 2)
|
|
inp_len = param->len;
|
|
else
|
|
return -1;
|
|
|
|
key->md = key->head;
|
|
SHA256_Update(&key->md, param->inp, 13);
|
|
|
|
x4 = 4 * n4x;
|
|
n4x += 1;
|
|
|
|
frag = inp_len >> n4x;
|
|
last = inp_len + frag - (frag << n4x);
|
|
if (last > frag && ((last + 13 + 9) % 64 < (x4 - 1))) {
|
|
frag++;
|
|
last -= x4 - 1;
|
|
}
|
|
|
|
packlen = 5 + 16 + ((frag + 32 + 16) & -16);
|
|
packlen = (packlen << n4x) - packlen;
|
|
packlen += 5 + 16 + ((last + 32 + 16) & -16);
|
|
|
|
param->interleave = x4;
|
|
|
|
return (int)packlen;
|
|
} else
|
|
return -1; /* not yet */
|
|
}
|
|
case EVP_CTRL_TLS1_1_MULTIBLOCK_ENCRYPT:
|
|
{
|
|
EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param =
|
|
(EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *) ptr;
|
|
|
|
return (int)tls1_1_multi_block_encrypt(key, param->out,
|
|
param->inp, param->len,
|
|
param->interleave / 4);
|
|
}
|
|
case EVP_CTRL_TLS1_1_MULTIBLOCK_DECRYPT:
|
|
# endif
|
|
default:
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
static EVP_CIPHER aesni_128_cbc_hmac_sha256_cipher = {
|
|
# ifdef NID_aes_128_cbc_hmac_sha256
|
|
NID_aes_128_cbc_hmac_sha256,
|
|
# else
|
|
NID_undef,
|
|
# endif
|
|
16, 16, 16,
|
|
EVP_CIPH_CBC_MODE | EVP_CIPH_FLAG_DEFAULT_ASN1 |
|
|
EVP_CIPH_FLAG_AEAD_CIPHER | EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK,
|
|
aesni_cbc_hmac_sha256_init_key,
|
|
aesni_cbc_hmac_sha256_cipher,
|
|
NULL,
|
|
sizeof(EVP_AES_HMAC_SHA256),
|
|
EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_set_asn1_iv,
|
|
EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_get_asn1_iv,
|
|
aesni_cbc_hmac_sha256_ctrl,
|
|
NULL
|
|
};
|
|
|
|
static EVP_CIPHER aesni_256_cbc_hmac_sha256_cipher = {
|
|
# ifdef NID_aes_256_cbc_hmac_sha256
|
|
NID_aes_256_cbc_hmac_sha256,
|
|
# else
|
|
NID_undef,
|
|
# endif
|
|
16, 32, 16,
|
|
EVP_CIPH_CBC_MODE | EVP_CIPH_FLAG_DEFAULT_ASN1 |
|
|
EVP_CIPH_FLAG_AEAD_CIPHER | EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK,
|
|
aesni_cbc_hmac_sha256_init_key,
|
|
aesni_cbc_hmac_sha256_cipher,
|
|
NULL,
|
|
sizeof(EVP_AES_HMAC_SHA256),
|
|
EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_set_asn1_iv,
|
|
EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_get_asn1_iv,
|
|
aesni_cbc_hmac_sha256_ctrl,
|
|
NULL
|
|
};
|
|
|
|
const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha256(void)
|
|
{
|
|
return ((OPENSSL_ia32cap_P[1] & AESNI_CAPABLE) &&
|
|
aesni_cbc_sha256_enc(NULL, NULL, 0, NULL, NULL, NULL, NULL) ?
|
|
&aesni_128_cbc_hmac_sha256_cipher : NULL);
|
|
}
|
|
|
|
const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha256(void)
|
|
{
|
|
return ((OPENSSL_ia32cap_P[1] & AESNI_CAPABLE) &&
|
|
aesni_cbc_sha256_enc(NULL, NULL, 0, NULL, NULL, NULL, NULL) ?
|
|
&aesni_256_cbc_hmac_sha256_cipher : NULL);
|
|
}
|
|
# else
|
|
const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha256(void)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha256(void)
|
|
{
|
|
return NULL;
|
|
}
|
|
# endif
|
|
#endif
|