965 lines
31 KiB
C
965 lines
31 KiB
C
/*
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* Copyright 2011-2016 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <openssl/opensslconf.h>
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#include <stdio.h>
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#include <string.h>
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#include <openssl/evp.h>
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#include <openssl/objects.h>
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#include <openssl/aes.h>
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#include <openssl/sha.h>
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#include <openssl/rand.h>
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#include "modes_local.h"
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#include "crypto/evp.h"
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#include "internal/constant_time.h"
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typedef struct {
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AES_KEY ks;
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SHA_CTX head, tail, md;
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size_t payload_length; /* AAD length in decrypt case */
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union {
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unsigned int tls_ver;
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unsigned char tls_aad[16]; /* 13 used */
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} aux;
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} EVP_AES_HMAC_SHA1;
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#define NO_PAYLOAD_LENGTH ((size_t)-1)
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#if defined(AESNI_ASM) && ( \
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defined(__x86_64) || defined(__x86_64__) || \
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defined(_M_AMD64) || defined(_M_X64) )
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extern unsigned int OPENSSL_ia32cap_P[];
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# define AESNI_CAPABLE (1<<(57-32))
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int aesni_set_encrypt_key(const unsigned char *userKey, int bits,
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AES_KEY *key);
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int aesni_set_decrypt_key(const unsigned char *userKey, int bits,
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AES_KEY *key);
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void aesni_cbc_encrypt(const unsigned char *in,
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unsigned char *out,
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size_t length,
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const AES_KEY *key, unsigned char *ivec, int enc);
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void aesni_cbc_sha1_enc(const void *inp, void *out, size_t blocks,
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const AES_KEY *key, unsigned char iv[16],
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SHA_CTX *ctx, const void *in0);
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void aesni256_cbc_sha1_dec(const void *inp, void *out, size_t blocks,
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const AES_KEY *key, unsigned char iv[16],
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SHA_CTX *ctx, const void *in0);
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# define data(ctx) ((EVP_AES_HMAC_SHA1 *)EVP_CIPHER_CTX_get_cipher_data(ctx))
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static int aesni_cbc_hmac_sha1_init_key(EVP_CIPHER_CTX *ctx,
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const unsigned char *inkey,
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const unsigned char *iv, int enc)
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{
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EVP_AES_HMAC_SHA1 *key = data(ctx);
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int ret;
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if (enc)
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ret = aesni_set_encrypt_key(inkey,
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EVP_CIPHER_CTX_key_length(ctx) * 8,
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&key->ks);
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else
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ret = aesni_set_decrypt_key(inkey,
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EVP_CIPHER_CTX_key_length(ctx) * 8,
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&key->ks);
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SHA1_Init(&key->head); /* handy when benchmarking */
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key->tail = key->head;
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key->md = key->head;
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key->payload_length = NO_PAYLOAD_LENGTH;
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return ret < 0 ? 0 : 1;
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}
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# define STITCHED_CALL
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# undef STITCHED_DECRYPT_CALL
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# if !defined(STITCHED_CALL)
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# define aes_off 0
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# endif
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void sha1_block_data_order(void *c, const void *p, size_t len);
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static void sha1_update(SHA_CTX *c, const void *data, size_t len)
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{
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const unsigned char *ptr = data;
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size_t res;
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if ((res = c->num)) {
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res = SHA_CBLOCK - res;
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if (len < res)
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res = len;
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SHA1_Update(c, ptr, res);
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ptr += res;
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len -= res;
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}
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res = len % SHA_CBLOCK;
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len -= res;
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if (len) {
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sha1_block_data_order(c, ptr, len / SHA_CBLOCK);
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ptr += len;
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c->Nh += len >> 29;
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c->Nl += len <<= 3;
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if (c->Nl < (unsigned int)len)
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c->Nh++;
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}
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if (res)
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SHA1_Update(c, ptr, res);
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}
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# ifdef SHA1_Update
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# undef SHA1_Update
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# endif
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# define SHA1_Update sha1_update
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# if !defined(OPENSSL_NO_MULTIBLOCK)
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typedef struct {
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unsigned int A[8], B[8], C[8], D[8], E[8];
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} SHA1_MB_CTX;
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typedef struct {
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const unsigned char *ptr;
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int blocks;
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} HASH_DESC;
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void sha1_multi_block(SHA1_MB_CTX *, const HASH_DESC *, int);
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typedef struct {
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const unsigned char *inp;
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unsigned char *out;
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int blocks;
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u64 iv[2];
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} CIPH_DESC;
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void aesni_multi_cbc_encrypt(CIPH_DESC *, void *, int);
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static size_t tls1_1_multi_block_encrypt(EVP_AES_HMAC_SHA1 *key,
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unsigned char *out,
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const unsigned char *inp,
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size_t inp_len, int n4x)
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{ /* n4x is 1 or 2 */
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HASH_DESC hash_d[8], edges[8];
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CIPH_DESC ciph_d[8];
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unsigned char storage[sizeof(SHA1_MB_CTX) + 32];
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union {
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u64 q[16];
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u32 d[32];
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u8 c[128];
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} blocks[8];
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SHA1_MB_CTX *ctx;
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unsigned int frag, last, packlen, i, x4 = 4 * n4x, minblocks, processed =
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0;
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size_t ret = 0;
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u8 *IVs;
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# if defined(BSWAP8)
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u64 seqnum;
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# endif
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/* ask for IVs in bulk */
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if (RAND_bytes((IVs = blocks[0].c), 16 * x4) <= 0)
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return 0;
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ctx = (SHA1_MB_CTX *) (storage + 32 - ((size_t)storage % 32)); /* align */
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frag = (unsigned int)inp_len >> (1 + n4x);
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last = (unsigned int)inp_len + frag - (frag << (1 + n4x));
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if (last > frag && ((last + 13 + 9) % 64) < (x4 - 1)) {
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frag++;
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last -= x4 - 1;
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}
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packlen = 5 + 16 + ((frag + 20 + 16) & -16);
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/* populate descriptors with pointers and IVs */
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hash_d[0].ptr = inp;
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ciph_d[0].inp = inp;
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/* 5+16 is place for header and explicit IV */
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ciph_d[0].out = out + 5 + 16;
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memcpy(ciph_d[0].out - 16, IVs, 16);
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memcpy(ciph_d[0].iv, IVs, 16);
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IVs += 16;
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for (i = 1; i < x4; i++) {
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ciph_d[i].inp = hash_d[i].ptr = hash_d[i - 1].ptr + frag;
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ciph_d[i].out = ciph_d[i - 1].out + packlen;
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memcpy(ciph_d[i].out - 16, IVs, 16);
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memcpy(ciph_d[i].iv, IVs, 16);
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IVs += 16;
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}
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# if defined(BSWAP8)
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memcpy(blocks[0].c, key->md.data, 8);
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seqnum = BSWAP8(blocks[0].q[0]);
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# endif
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for (i = 0; i < x4; i++) {
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unsigned int len = (i == (x4 - 1) ? last : frag);
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# if !defined(BSWAP8)
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unsigned int carry, j;
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# endif
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ctx->A[i] = key->md.h0;
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ctx->B[i] = key->md.h1;
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ctx->C[i] = key->md.h2;
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ctx->D[i] = key->md.h3;
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ctx->E[i] = key->md.h4;
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/* fix seqnum */
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# if defined(BSWAP8)
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blocks[i].q[0] = BSWAP8(seqnum + i);
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# else
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for (carry = i, j = 8; j--;) {
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blocks[i].c[j] = ((u8 *)key->md.data)[j] + carry;
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carry = (blocks[i].c[j] - carry) >> (sizeof(carry) * 8 - 1);
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}
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# endif
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blocks[i].c[8] = ((u8 *)key->md.data)[8];
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blocks[i].c[9] = ((u8 *)key->md.data)[9];
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blocks[i].c[10] = ((u8 *)key->md.data)[10];
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/* fix length */
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blocks[i].c[11] = (u8)(len >> 8);
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blocks[i].c[12] = (u8)(len);
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memcpy(blocks[i].c + 13, hash_d[i].ptr, 64 - 13);
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hash_d[i].ptr += 64 - 13;
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hash_d[i].blocks = (len - (64 - 13)) / 64;
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edges[i].ptr = blocks[i].c;
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edges[i].blocks = 1;
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}
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/* hash 13-byte headers and first 64-13 bytes of inputs */
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sha1_multi_block(ctx, edges, n4x);
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/* hash bulk inputs */
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# define MAXCHUNKSIZE 2048
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# if MAXCHUNKSIZE%64
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# error "MAXCHUNKSIZE is not divisible by 64"
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# elif MAXCHUNKSIZE
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/*
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* goal is to minimize pressure on L1 cache by moving in shorter steps,
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* so that hashed data is still in the cache by the time we encrypt it
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*/
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minblocks = ((frag <= last ? frag : last) - (64 - 13)) / 64;
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if (minblocks > MAXCHUNKSIZE / 64) {
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for (i = 0; i < x4; i++) {
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edges[i].ptr = hash_d[i].ptr;
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edges[i].blocks = MAXCHUNKSIZE / 64;
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ciph_d[i].blocks = MAXCHUNKSIZE / 16;
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}
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do {
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sha1_multi_block(ctx, edges, n4x);
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aesni_multi_cbc_encrypt(ciph_d, &key->ks, n4x);
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for (i = 0; i < x4; i++) {
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edges[i].ptr = hash_d[i].ptr += MAXCHUNKSIZE;
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hash_d[i].blocks -= MAXCHUNKSIZE / 64;
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edges[i].blocks = MAXCHUNKSIZE / 64;
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ciph_d[i].inp += MAXCHUNKSIZE;
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ciph_d[i].out += MAXCHUNKSIZE;
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ciph_d[i].blocks = MAXCHUNKSIZE / 16;
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memcpy(ciph_d[i].iv, ciph_d[i].out - 16, 16);
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}
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processed += MAXCHUNKSIZE;
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minblocks -= MAXCHUNKSIZE / 64;
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} while (minblocks > MAXCHUNKSIZE / 64);
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}
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# endif
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# undef MAXCHUNKSIZE
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sha1_multi_block(ctx, hash_d, n4x);
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memset(blocks, 0, sizeof(blocks));
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for (i = 0; i < x4; i++) {
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unsigned int len = (i == (x4 - 1) ? last : frag),
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off = hash_d[i].blocks * 64;
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const unsigned char *ptr = hash_d[i].ptr + off;
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off = (len - processed) - (64 - 13) - off; /* remainder actually */
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memcpy(blocks[i].c, ptr, off);
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blocks[i].c[off] = 0x80;
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len += 64 + 13; /* 64 is HMAC header */
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len *= 8; /* convert to bits */
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if (off < (64 - 8)) {
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# ifdef BSWAP4
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blocks[i].d[15] = BSWAP4(len);
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# else
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PUTU32(blocks[i].c + 60, len);
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# endif
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edges[i].blocks = 1;
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} else {
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# ifdef BSWAP4
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blocks[i].d[31] = BSWAP4(len);
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# else
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PUTU32(blocks[i].c + 124, len);
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# endif
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edges[i].blocks = 2;
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}
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edges[i].ptr = blocks[i].c;
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}
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/* hash input tails and finalize */
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sha1_multi_block(ctx, edges, n4x);
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memset(blocks, 0, sizeof(blocks));
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for (i = 0; i < x4; i++) {
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# ifdef BSWAP4
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blocks[i].d[0] = BSWAP4(ctx->A[i]);
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ctx->A[i] = key->tail.h0;
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blocks[i].d[1] = BSWAP4(ctx->B[i]);
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ctx->B[i] = key->tail.h1;
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blocks[i].d[2] = BSWAP4(ctx->C[i]);
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ctx->C[i] = key->tail.h2;
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blocks[i].d[3] = BSWAP4(ctx->D[i]);
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ctx->D[i] = key->tail.h3;
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blocks[i].d[4] = BSWAP4(ctx->E[i]);
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ctx->E[i] = key->tail.h4;
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blocks[i].c[20] = 0x80;
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blocks[i].d[15] = BSWAP4((64 + 20) * 8);
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# else
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PUTU32(blocks[i].c + 0, ctx->A[i]);
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ctx->A[i] = key->tail.h0;
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PUTU32(blocks[i].c + 4, ctx->B[i]);
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ctx->B[i] = key->tail.h1;
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PUTU32(blocks[i].c + 8, ctx->C[i]);
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ctx->C[i] = key->tail.h2;
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PUTU32(blocks[i].c + 12, ctx->D[i]);
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ctx->D[i] = key->tail.h3;
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PUTU32(blocks[i].c + 16, ctx->E[i]);
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ctx->E[i] = key->tail.h4;
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blocks[i].c[20] = 0x80;
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PUTU32(blocks[i].c + 60, (64 + 20) * 8);
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# endif
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edges[i].ptr = blocks[i].c;
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edges[i].blocks = 1;
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}
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/* finalize MACs */
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sha1_multi_block(ctx, edges, n4x);
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for (i = 0; i < x4; i++) {
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unsigned int len = (i == (x4 - 1) ? last : frag), pad, j;
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unsigned char *out0 = out;
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memcpy(ciph_d[i].out, ciph_d[i].inp, len - processed);
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ciph_d[i].inp = ciph_d[i].out;
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out += 5 + 16 + len;
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/* write MAC */
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PUTU32(out + 0, ctx->A[i]);
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PUTU32(out + 4, ctx->B[i]);
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PUTU32(out + 8, ctx->C[i]);
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PUTU32(out + 12, ctx->D[i]);
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PUTU32(out + 16, ctx->E[i]);
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out += 20;
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len += 20;
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/* pad */
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pad = 15 - len % 16;
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for (j = 0; j <= pad; j++)
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*(out++) = pad;
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len += pad + 1;
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ciph_d[i].blocks = (len - processed) / 16;
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len += 16; /* account for explicit iv */
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/* arrange header */
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out0[0] = ((u8 *)key->md.data)[8];
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out0[1] = ((u8 *)key->md.data)[9];
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out0[2] = ((u8 *)key->md.data)[10];
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out0[3] = (u8)(len >> 8);
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out0[4] = (u8)(len);
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ret += len + 5;
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inp += frag;
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}
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aesni_multi_cbc_encrypt(ciph_d, &key->ks, n4x);
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OPENSSL_cleanse(blocks, sizeof(blocks));
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OPENSSL_cleanse(ctx, sizeof(*ctx));
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return ret;
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}
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# endif
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static int aesni_cbc_hmac_sha1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t len)
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{
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EVP_AES_HMAC_SHA1 *key = data(ctx);
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unsigned int l;
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size_t plen = key->payload_length, iv = 0, /* explicit IV in TLS 1.1 and
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* later */
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sha_off = 0;
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# if defined(STITCHED_CALL)
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size_t aes_off = 0, blocks;
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sha_off = SHA_CBLOCK - key->md.num;
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# endif
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key->payload_length = NO_PAYLOAD_LENGTH;
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if (len % AES_BLOCK_SIZE)
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return 0;
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if (EVP_CIPHER_CTX_encrypting(ctx)) {
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if (plen == NO_PAYLOAD_LENGTH)
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plen = len;
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else if (len !=
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((plen + SHA_DIGEST_LENGTH +
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AES_BLOCK_SIZE) & -AES_BLOCK_SIZE))
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return 0;
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else if (key->aux.tls_ver >= TLS1_1_VERSION)
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iv = AES_BLOCK_SIZE;
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# if defined(STITCHED_CALL)
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if (plen > (sha_off + iv)
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&& (blocks = (plen - (sha_off + iv)) / SHA_CBLOCK)) {
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SHA1_Update(&key->md, in + iv, sha_off);
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aesni_cbc_sha1_enc(in, out, blocks, &key->ks,
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EVP_CIPHER_CTX_iv_noconst(ctx),
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&key->md, in + iv + sha_off);
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blocks *= SHA_CBLOCK;
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aes_off += blocks;
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sha_off += blocks;
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key->md.Nh += blocks >> 29;
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key->md.Nl += blocks <<= 3;
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if (key->md.Nl < (unsigned int)blocks)
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key->md.Nh++;
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} else {
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sha_off = 0;
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}
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# endif
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sha_off += iv;
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SHA1_Update(&key->md, in + sha_off, plen - sha_off);
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if (plen != len) { /* "TLS" mode of operation */
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if (in != out)
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memcpy(out + aes_off, in + aes_off, plen - aes_off);
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/* calculate HMAC and append it to payload */
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SHA1_Final(out + plen, &key->md);
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key->md = key->tail;
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SHA1_Update(&key->md, out + plen, SHA_DIGEST_LENGTH);
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SHA1_Final(out + plen, &key->md);
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/* pad the payload|hmac */
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plen += SHA_DIGEST_LENGTH;
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for (l = len - plen - 1; plen < len; plen++)
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out[plen] = l;
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/* encrypt HMAC|padding at once */
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aesni_cbc_encrypt(out + aes_off, out + aes_off, len - aes_off,
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&key->ks, EVP_CIPHER_CTX_iv_noconst(ctx), 1);
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} else {
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aesni_cbc_encrypt(in + aes_off, out + aes_off, len - aes_off,
|
|
&key->ks, EVP_CIPHER_CTX_iv_noconst(ctx), 1);
|
|
}
|
|
} else {
|
|
union {
|
|
unsigned int u[SHA_DIGEST_LENGTH / sizeof(unsigned int)];
|
|
unsigned char c[32 + SHA_DIGEST_LENGTH];
|
|
} mac, *pmac;
|
|
|
|
/* arrange cache line alignment */
|
|
pmac = (void *)(((size_t)mac.c + 31) & ((size_t)0 - 32));
|
|
|
|
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[SHA_CBLOCK];
|
|
} *data = (void *)key->md.data;
|
|
# if defined(STITCHED_DECRYPT_CALL)
|
|
unsigned char tail_iv[AES_BLOCK_SIZE];
|
|
int stitch = 0;
|
|
# endif
|
|
|
|
if ((key->aux.tls_aad[plen - 4] << 8 | key->aux.tls_aad[plen - 3])
|
|
>= TLS1_1_VERSION) {
|
|
if (len < (AES_BLOCK_SIZE + SHA_DIGEST_LENGTH + 1))
|
|
return 0;
|
|
|
|
/* omit explicit iv */
|
|
memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), in, AES_BLOCK_SIZE);
|
|
|
|
in += AES_BLOCK_SIZE;
|
|
out += AES_BLOCK_SIZE;
|
|
len -= AES_BLOCK_SIZE;
|
|
} else if (len < (SHA_DIGEST_LENGTH + 1))
|
|
return 0;
|
|
|
|
# if defined(STITCHED_DECRYPT_CALL)
|
|
if (len >= 1024 && ctx->key_len == 32) {
|
|
/* decrypt last block */
|
|
memcpy(tail_iv, in + len - 2 * AES_BLOCK_SIZE,
|
|
AES_BLOCK_SIZE);
|
|
aesni_cbc_encrypt(in + len - AES_BLOCK_SIZE,
|
|
out + len - AES_BLOCK_SIZE, AES_BLOCK_SIZE,
|
|
&key->ks, tail_iv, 0);
|
|
stitch = 1;
|
|
} else
|
|
# endif
|
|
/* decrypt HMAC|padding at once */
|
|
aesni_cbc_encrypt(in, out, len, &key->ks,
|
|
EVP_CIPHER_CTX_iv_noconst(ctx), 0);
|
|
|
|
/* figure out payload length */
|
|
pad = out[len - 1];
|
|
maxpad = len - (SHA_DIGEST_LENGTH + 1);
|
|
maxpad |= (255 - maxpad) >> (sizeof(maxpad) * 8 - 8);
|
|
maxpad &= 255;
|
|
|
|
mask = constant_time_ge(maxpad, pad);
|
|
ret &= mask;
|
|
/*
|
|
* If pad is invalid then we will fail the above test but we must
|
|
* continue anyway because we are in constant time code. However,
|
|
* we'll use the maxpad value instead of the supplied pad to make
|
|
* sure we perform well defined pointer arithmetic.
|
|
*/
|
|
pad = constant_time_select(mask, pad, maxpad);
|
|
|
|
inp_len = len - (SHA_DIGEST_LENGTH + pad + 1);
|
|
|
|
key->aux.tls_aad[plen - 2] = inp_len >> 8;
|
|
key->aux.tls_aad[plen - 1] = inp_len;
|
|
|
|
/* calculate HMAC */
|
|
key->md = key->head;
|
|
SHA1_Update(&key->md, key->aux.tls_aad, plen);
|
|
|
|
# if defined(STITCHED_DECRYPT_CALL)
|
|
if (stitch) {
|
|
blocks = (len - (256 + 32 + SHA_CBLOCK)) / SHA_CBLOCK;
|
|
aes_off = len - AES_BLOCK_SIZE - blocks * SHA_CBLOCK;
|
|
sha_off = SHA_CBLOCK - plen;
|
|
|
|
aesni_cbc_encrypt(in, out, aes_off, &key->ks, ctx->iv, 0);
|
|
|
|
SHA1_Update(&key->md, out, sha_off);
|
|
aesni256_cbc_sha1_dec(in + aes_off,
|
|
out + aes_off, blocks, &key->ks,
|
|
ctx->iv, &key->md, out + sha_off);
|
|
|
|
sha_off += blocks *= SHA_CBLOCK;
|
|
out += sha_off;
|
|
len -= sha_off;
|
|
inp_len -= sha_off;
|
|
|
|
key->md.Nl += (blocks << 3); /* at most 18 bits */
|
|
memcpy(ctx->iv, tail_iv, AES_BLOCK_SIZE);
|
|
}
|
|
# endif
|
|
|
|
# if 1 /* see original reference version in #else */
|
|
len -= SHA_DIGEST_LENGTH; /* amend mac */
|
|
if (len >= (256 + SHA_CBLOCK)) {
|
|
j = (len - (256 + SHA_CBLOCK)) & (0 - SHA_CBLOCK);
|
|
j += SHA_CBLOCK - key->md.num;
|
|
SHA1_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;
|
|
|
|
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 != SHA_CBLOCK)
|
|
continue;
|
|
|
|
/* j is not incremented yet */
|
|
mask = 0 - ((inp_len + 7 - j) >> (sizeof(j) * 8 - 1));
|
|
data->u[SHA_LBLOCK - 1] |= bitlen & mask;
|
|
sha1_block_data_order(&key->md, data, 1);
|
|
mask &= 0 - ((j - inp_len - 72) >> (sizeof(j) * 8 - 1));
|
|
pmac->u[0] |= key->md.h0 & mask;
|
|
pmac->u[1] |= key->md.h1 & mask;
|
|
pmac->u[2] |= key->md.h2 & mask;
|
|
pmac->u[3] |= key->md.h3 & mask;
|
|
pmac->u[4] |= key->md.h4 & mask;
|
|
res = 0;
|
|
}
|
|
|
|
for (i = res; i < SHA_CBLOCK; i++, j++)
|
|
data->c[i] = 0;
|
|
|
|
if (res > SHA_CBLOCK - 8) {
|
|
mask = 0 - ((inp_len + 8 - j) >> (sizeof(j) * 8 - 1));
|
|
data->u[SHA_LBLOCK - 1] |= bitlen & mask;
|
|
sha1_block_data_order(&key->md, data, 1);
|
|
mask &= 0 - ((j - inp_len - 73) >> (sizeof(j) * 8 - 1));
|
|
pmac->u[0] |= key->md.h0 & mask;
|
|
pmac->u[1] |= key->md.h1 & mask;
|
|
pmac->u[2] |= key->md.h2 & mask;
|
|
pmac->u[3] |= key->md.h3 & mask;
|
|
pmac->u[4] |= key->md.h4 & mask;
|
|
|
|
memset(data, 0, SHA_CBLOCK);
|
|
j += 64;
|
|
}
|
|
data->u[SHA_LBLOCK - 1] = bitlen;
|
|
sha1_block_data_order(&key->md, data, 1);
|
|
mask = 0 - ((j - inp_len - 73) >> (sizeof(j) * 8 - 1));
|
|
pmac->u[0] |= key->md.h0 & mask;
|
|
pmac->u[1] |= key->md.h1 & mask;
|
|
pmac->u[2] |= key->md.h2 & mask;
|
|
pmac->u[3] |= key->md.h3 & mask;
|
|
pmac->u[4] |= key->md.h4 & 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]);
|
|
# else
|
|
for (i = 0; i < 5; 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 += SHA_DIGEST_LENGTH;
|
|
# else /* pre-lucky-13 reference version of above */
|
|
SHA1_Update(&key->md, out, inp_len);
|
|
res = key->md.num;
|
|
SHA1_Final(pmac->c, &key->md);
|
|
|
|
{
|
|
unsigned int inp_blocks, pad_blocks;
|
|
|
|
/* but pretend as if we hashed padded payload */
|
|
inp_blocks =
|
|
1 + ((SHA_CBLOCK - 9 - res) >> (sizeof(res) * 8 - 1));
|
|
res += (unsigned int)(len - inp_len);
|
|
pad_blocks = res / SHA_CBLOCK;
|
|
res %= SHA_CBLOCK;
|
|
pad_blocks +=
|
|
1 + ((SHA_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;
|
|
SHA1_Update(&key->md, pmac->c, SHA_DIGEST_LENGTH);
|
|
SHA1_Final(pmac->c, &key->md);
|
|
|
|
/* verify HMAC */
|
|
out += inp_len;
|
|
len -= inp_len;
|
|
# if 1 /* see original reference version in #else */
|
|
{
|
|
unsigned char *p = out + len - 1 - maxpad - SHA_DIGEST_LENGTH;
|
|
size_t off = out - p;
|
|
unsigned int c, cmask;
|
|
|
|
maxpad += SHA_DIGEST_LENGTH;
|
|
for (res = 0, i = 0, j = 0; j < maxpad; j++) {
|
|
c = p[j];
|
|
cmask =
|
|
((int)(j - off - SHA_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 -= SHA_DIGEST_LENGTH;
|
|
|
|
res = 0 - ((0 - res) >> (sizeof(res) * 8 - 1));
|
|
ret &= (int)~res;
|
|
}
|
|
# else /* pre-lucky-13 reference version of above */
|
|
for (res = 0, i = 0; i < SHA_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 {
|
|
# if defined(STITCHED_DECRYPT_CALL)
|
|
if (len >= 1024 && ctx->key_len == 32) {
|
|
if (sha_off %= SHA_CBLOCK)
|
|
blocks = (len - 3 * SHA_CBLOCK) / SHA_CBLOCK;
|
|
else
|
|
blocks = (len - 2 * SHA_CBLOCK) / SHA_CBLOCK;
|
|
aes_off = len - blocks * SHA_CBLOCK;
|
|
|
|
aesni_cbc_encrypt(in, out, aes_off, &key->ks, ctx->iv, 0);
|
|
SHA1_Update(&key->md, out, sha_off);
|
|
aesni256_cbc_sha1_dec(in + aes_off,
|
|
out + aes_off, blocks, &key->ks,
|
|
ctx->iv, &key->md, out + sha_off);
|
|
|
|
sha_off += blocks *= SHA_CBLOCK;
|
|
out += sha_off;
|
|
len -= sha_off;
|
|
|
|
key->md.Nh += blocks >> 29;
|
|
key->md.Nl += blocks <<= 3;
|
|
if (key->md.Nl < (unsigned int)blocks)
|
|
key->md.Nh++;
|
|
} else
|
|
# endif
|
|
/* decrypt HMAC|padding at once */
|
|
aesni_cbc_encrypt(in, out, len, &key->ks,
|
|
EVP_CIPHER_CTX_iv_noconst(ctx), 0);
|
|
|
|
SHA1_Update(&key->md, out, len);
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int aesni_cbc_hmac_sha1_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg,
|
|
void *ptr)
|
|
{
|
|
EVP_AES_HMAC_SHA1 *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)) {
|
|
SHA1_Init(&key->head);
|
|
SHA1_Update(&key->head, ptr, arg);
|
|
SHA1_Final(hmac_key, &key->head);
|
|
} else {
|
|
memcpy(hmac_key, ptr, arg);
|
|
}
|
|
|
|
for (i = 0; i < sizeof(hmac_key); i++)
|
|
hmac_key[i] ^= 0x36; /* ipad */
|
|
SHA1_Init(&key->head);
|
|
SHA1_Update(&key->head, hmac_key, sizeof(hmac_key));
|
|
|
|
for (i = 0; i < sizeof(hmac_key); i++)
|
|
hmac_key[i] ^= 0x36 ^ 0x5c; /* opad */
|
|
SHA1_Init(&key->tail);
|
|
SHA1_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;
|
|
|
|
if (arg != EVP_AEAD_TLS1_AAD_LEN)
|
|
return -1;
|
|
|
|
len = p[arg - 2] << 8 | p[arg - 1];
|
|
|
|
if (EVP_CIPHER_CTX_encrypting(ctx)) {
|
|
key->payload_length = len;
|
|
if ((key->aux.tls_ver =
|
|
p[arg - 4] << 8 | p[arg - 3]) >= TLS1_1_VERSION) {
|
|
if (len < AES_BLOCK_SIZE)
|
|
return 0;
|
|
len -= AES_BLOCK_SIZE;
|
|
p[arg - 2] = len >> 8;
|
|
p[arg - 1] = len;
|
|
}
|
|
key->md = key->head;
|
|
SHA1_Update(&key->md, p, arg);
|
|
|
|
return (int)(((len + SHA_DIGEST_LENGTH +
|
|
AES_BLOCK_SIZE) & -AES_BLOCK_SIZE)
|
|
- len);
|
|
} else {
|
|
memcpy(key->aux.tls_aad, ptr, arg);
|
|
key->payload_length = arg;
|
|
|
|
return SHA_DIGEST_LENGTH;
|
|
}
|
|
}
|
|
# if !defined(OPENSSL_NO_MULTIBLOCK)
|
|
case EVP_CTRL_TLS1_1_MULTIBLOCK_MAX_BUFSIZE:
|
|
return (int)(5 + 16 + ((arg + 20 + 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 (EVP_CIPHER_CTX_encrypting(ctx)) {
|
|
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;
|
|
SHA1_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 + 20 + 16) & -16);
|
|
packlen = (packlen << n4x) - packlen;
|
|
packlen += 5 + 16 + ((last + 20 + 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_sha1_cipher = {
|
|
# ifdef NID_aes_128_cbc_hmac_sha1
|
|
NID_aes_128_cbc_hmac_sha1,
|
|
# else
|
|
NID_undef,
|
|
# endif
|
|
AES_BLOCK_SIZE, 16, AES_BLOCK_SIZE,
|
|
EVP_CIPH_CBC_MODE | EVP_CIPH_FLAG_DEFAULT_ASN1 |
|
|
EVP_CIPH_FLAG_AEAD_CIPHER | EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK,
|
|
aesni_cbc_hmac_sha1_init_key,
|
|
aesni_cbc_hmac_sha1_cipher,
|
|
NULL,
|
|
sizeof(EVP_AES_HMAC_SHA1),
|
|
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_sha1_ctrl,
|
|
NULL
|
|
};
|
|
|
|
static EVP_CIPHER aesni_256_cbc_hmac_sha1_cipher = {
|
|
# ifdef NID_aes_256_cbc_hmac_sha1
|
|
NID_aes_256_cbc_hmac_sha1,
|
|
# else
|
|
NID_undef,
|
|
# endif
|
|
AES_BLOCK_SIZE, 32, AES_BLOCK_SIZE,
|
|
EVP_CIPH_CBC_MODE | EVP_CIPH_FLAG_DEFAULT_ASN1 |
|
|
EVP_CIPH_FLAG_AEAD_CIPHER | EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK,
|
|
aesni_cbc_hmac_sha1_init_key,
|
|
aesni_cbc_hmac_sha1_cipher,
|
|
NULL,
|
|
sizeof(EVP_AES_HMAC_SHA1),
|
|
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_sha1_ctrl,
|
|
NULL
|
|
};
|
|
|
|
const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha1(void)
|
|
{
|
|
return (OPENSSL_ia32cap_P[1] & AESNI_CAPABLE ?
|
|
&aesni_128_cbc_hmac_sha1_cipher : NULL);
|
|
}
|
|
|
|
const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha1(void)
|
|
{
|
|
return (OPENSSL_ia32cap_P[1] & AESNI_CAPABLE ?
|
|
&aesni_256_cbc_hmac_sha1_cipher : NULL);
|
|
}
|
|
#else
|
|
const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha1(void)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha1(void)
|
|
{
|
|
return NULL;
|
|
}
|
|
#endif
|