diff options
Diffstat (limited to 'openssl/crypto/evp/e_aes_cbc_hmac_sha256.c')
| -rwxr-xr-x | openssl/crypto/evp/e_aes_cbc_hmac_sha256.c | 970 |
1 files changed, 970 insertions, 0 deletions
diff --git a/openssl/crypto/evp/e_aes_cbc_hmac_sha256.c b/openssl/crypto/evp/e_aes_cbc_hmac_sha256.c new file mode 100755 index 000000000..30398c7ca --- /dev/null +++ b/openssl/crypto/evp/e_aes_cbc_hmac_sha256.c @@ -0,0 +1,970 @@ +/* ==================================================================== + * 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" + +# 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[3]; +# 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) + if (OPENSSL_ia32cap_P[1] & (1 << (60 - 32)) && /* AVX? */ + 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; + + 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 (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 { + if (arg > 13) + arg = 13; + 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 |