1*1dcdf01fSchristos /*
2*1dcdf01fSchristos * Copyright 2013-2016 The OpenSSL Project Authors. All Rights Reserved.
360662d10Schristos *
4*1dcdf01fSchristos * Licensed under the OpenSSL license (the "License"). You may not use
5*1dcdf01fSchristos * this file except in compliance with the License. You can obtain a copy
6*1dcdf01fSchristos * in the file LICENSE in the source distribution or at
7*1dcdf01fSchristos * https://www.openssl.org/source/license.html
860662d10Schristos */
960662d10Schristos
1060662d10Schristos #include <openssl/opensslconf.h>
1160662d10Schristos
1260662d10Schristos #include <stdio.h>
1360662d10Schristos #include <string.h>
1460662d10Schristos
1560662d10Schristos
1660662d10Schristos #include <openssl/evp.h>
1760662d10Schristos #include <openssl/objects.h>
1860662d10Schristos #include <openssl/aes.h>
1960662d10Schristos #include <openssl/sha.h>
2060662d10Schristos #include <openssl/rand.h>
21*1dcdf01fSchristos #include "modes_local.h"
22*1dcdf01fSchristos #include "internal/constant_time.h"
23*1dcdf01fSchristos #include "crypto/evp.h"
2460662d10Schristos
2560662d10Schristos typedef struct {
2660662d10Schristos AES_KEY ks;
2760662d10Schristos SHA256_CTX head, tail, md;
2860662d10Schristos size_t payload_length; /* AAD length in decrypt case */
2960662d10Schristos union {
3060662d10Schristos unsigned int tls_ver;
3160662d10Schristos unsigned char tls_aad[16]; /* 13 used */
3260662d10Schristos } aux;
3360662d10Schristos } EVP_AES_HMAC_SHA256;
3460662d10Schristos
3560662d10Schristos # define NO_PAYLOAD_LENGTH ((size_t)-1)
3660662d10Schristos
37*1dcdf01fSchristos #if defined(AESNI_ASM) && ( \
3860662d10Schristos defined(__x86_64) || defined(__x86_64__) || \
39*1dcdf01fSchristos defined(_M_AMD64) || defined(_M_X64) )
4060662d10Schristos
4160662d10Schristos extern unsigned int OPENSSL_ia32cap_P[];
4260662d10Schristos # define AESNI_CAPABLE (1<<(57-32))
4360662d10Schristos
4460662d10Schristos int aesni_set_encrypt_key(const unsigned char *userKey, int bits,
4560662d10Schristos AES_KEY *key);
4660662d10Schristos int aesni_set_decrypt_key(const unsigned char *userKey, int bits,
4760662d10Schristos AES_KEY *key);
4860662d10Schristos
4960662d10Schristos void aesni_cbc_encrypt(const unsigned char *in,
5060662d10Schristos unsigned char *out,
5160662d10Schristos size_t length,
5260662d10Schristos const AES_KEY *key, unsigned char *ivec, int enc);
5360662d10Schristos
5460662d10Schristos int aesni_cbc_sha256_enc(const void *inp, void *out, size_t blocks,
5560662d10Schristos const AES_KEY *key, unsigned char iv[16],
5660662d10Schristos SHA256_CTX *ctx, const void *in0);
5760662d10Schristos
58*1dcdf01fSchristos # define data(ctx) ((EVP_AES_HMAC_SHA256 *)EVP_CIPHER_CTX_get_cipher_data(ctx))
5960662d10Schristos
aesni_cbc_hmac_sha256_init_key(EVP_CIPHER_CTX * ctx,const unsigned char * inkey,const unsigned char * iv,int enc)6060662d10Schristos static int aesni_cbc_hmac_sha256_init_key(EVP_CIPHER_CTX *ctx,
6160662d10Schristos const unsigned char *inkey,
6260662d10Schristos const unsigned char *iv, int enc)
6360662d10Schristos {
6460662d10Schristos EVP_AES_HMAC_SHA256 *key = data(ctx);
6560662d10Schristos int ret;
6660662d10Schristos
6760662d10Schristos if (enc)
68*1dcdf01fSchristos ret = aesni_set_encrypt_key(inkey,
69*1dcdf01fSchristos EVP_CIPHER_CTX_key_length(ctx) * 8,
70*1dcdf01fSchristos &key->ks);
7160662d10Schristos else
72*1dcdf01fSchristos ret = aesni_set_decrypt_key(inkey,
73*1dcdf01fSchristos EVP_CIPHER_CTX_key_length(ctx) * 8,
74*1dcdf01fSchristos &key->ks);
7560662d10Schristos
7660662d10Schristos SHA256_Init(&key->head); /* handy when benchmarking */
7760662d10Schristos key->tail = key->head;
7860662d10Schristos key->md = key->head;
7960662d10Schristos
8060662d10Schristos key->payload_length = NO_PAYLOAD_LENGTH;
8160662d10Schristos
8260662d10Schristos return ret < 0 ? 0 : 1;
8360662d10Schristos }
8460662d10Schristos
8560662d10Schristos # define STITCHED_CALL
8660662d10Schristos
8760662d10Schristos # if !defined(STITCHED_CALL)
8860662d10Schristos # define aes_off 0
8960662d10Schristos # endif
9060662d10Schristos
9160662d10Schristos void sha256_block_data_order(void *c, const void *p, size_t len);
9260662d10Schristos
sha256_update(SHA256_CTX * c,const void * data,size_t len)9360662d10Schristos static void sha256_update(SHA256_CTX *c, const void *data, size_t len)
9460662d10Schristos {
9560662d10Schristos const unsigned char *ptr = data;
9660662d10Schristos size_t res;
9760662d10Schristos
9860662d10Schristos if ((res = c->num)) {
9960662d10Schristos res = SHA256_CBLOCK - res;
10060662d10Schristos if (len < res)
10160662d10Schristos res = len;
10260662d10Schristos SHA256_Update(c, ptr, res);
10360662d10Schristos ptr += res;
10460662d10Schristos len -= res;
10560662d10Schristos }
10660662d10Schristos
10760662d10Schristos res = len % SHA256_CBLOCK;
10860662d10Schristos len -= res;
10960662d10Schristos
11060662d10Schristos if (len) {
11160662d10Schristos sha256_block_data_order(c, ptr, len / SHA256_CBLOCK);
11260662d10Schristos
11360662d10Schristos ptr += len;
11460662d10Schristos c->Nh += len >> 29;
11560662d10Schristos c->Nl += len <<= 3;
11660662d10Schristos if (c->Nl < (unsigned int)len)
11760662d10Schristos c->Nh++;
11860662d10Schristos }
11960662d10Schristos
12060662d10Schristos if (res)
12160662d10Schristos SHA256_Update(c, ptr, res);
12260662d10Schristos }
12360662d10Schristos
12460662d10Schristos # ifdef SHA256_Update
12560662d10Schristos # undef SHA256_Update
12660662d10Schristos # endif
12760662d10Schristos # define SHA256_Update sha256_update
12860662d10Schristos
129*1dcdf01fSchristos # if !defined(OPENSSL_NO_MULTIBLOCK)
13060662d10Schristos
13160662d10Schristos typedef struct {
13260662d10Schristos unsigned int A[8], B[8], C[8], D[8], E[8], F[8], G[8], H[8];
13360662d10Schristos } SHA256_MB_CTX;
13460662d10Schristos typedef struct {
13560662d10Schristos const unsigned char *ptr;
13660662d10Schristos int blocks;
13760662d10Schristos } HASH_DESC;
13860662d10Schristos
13960662d10Schristos void sha256_multi_block(SHA256_MB_CTX *, const HASH_DESC *, int);
14060662d10Schristos
14160662d10Schristos typedef struct {
14260662d10Schristos const unsigned char *inp;
14360662d10Schristos unsigned char *out;
14460662d10Schristos int blocks;
14560662d10Schristos u64 iv[2];
14660662d10Schristos } CIPH_DESC;
14760662d10Schristos
14860662d10Schristos void aesni_multi_cbc_encrypt(CIPH_DESC *, void *, int);
14960662d10Schristos
tls1_1_multi_block_encrypt(EVP_AES_HMAC_SHA256 * key,unsigned char * out,const unsigned char * inp,size_t inp_len,int n4x)15060662d10Schristos static size_t tls1_1_multi_block_encrypt(EVP_AES_HMAC_SHA256 *key,
15160662d10Schristos unsigned char *out,
15260662d10Schristos const unsigned char *inp,
15360662d10Schristos size_t inp_len, int n4x)
15460662d10Schristos { /* n4x is 1 or 2 */
15560662d10Schristos HASH_DESC hash_d[8], edges[8];
15660662d10Schristos CIPH_DESC ciph_d[8];
15760662d10Schristos unsigned char storage[sizeof(SHA256_MB_CTX) + 32];
15860662d10Schristos union {
15960662d10Schristos u64 q[16];
16060662d10Schristos u32 d[32];
16160662d10Schristos u8 c[128];
16260662d10Schristos } blocks[8];
16360662d10Schristos SHA256_MB_CTX *ctx;
16460662d10Schristos unsigned int frag, last, packlen, i, x4 = 4 * n4x, minblocks, processed =
16560662d10Schristos 0;
16660662d10Schristos size_t ret = 0;
16760662d10Schristos u8 *IVs;
16860662d10Schristos # if defined(BSWAP8)
16960662d10Schristos u64 seqnum;
17060662d10Schristos # endif
17160662d10Schristos
17260662d10Schristos /* ask for IVs in bulk */
17360662d10Schristos if (RAND_bytes((IVs = blocks[0].c), 16 * x4) <= 0)
17460662d10Schristos return 0;
17560662d10Schristos
17660662d10Schristos /* align */
17760662d10Schristos ctx = (SHA256_MB_CTX *) (storage + 32 - ((size_t)storage % 32));
17860662d10Schristos
17960662d10Schristos frag = (unsigned int)inp_len >> (1 + n4x);
18060662d10Schristos last = (unsigned int)inp_len + frag - (frag << (1 + n4x));
18160662d10Schristos if (last > frag && ((last + 13 + 9) % 64) < (x4 - 1)) {
18260662d10Schristos frag++;
18360662d10Schristos last -= x4 - 1;
18460662d10Schristos }
18560662d10Schristos
18660662d10Schristos packlen = 5 + 16 + ((frag + 32 + 16) & -16);
18760662d10Schristos
18860662d10Schristos /* populate descriptors with pointers and IVs */
18960662d10Schristos hash_d[0].ptr = inp;
19060662d10Schristos ciph_d[0].inp = inp;
19160662d10Schristos /* 5+16 is place for header and explicit IV */
19260662d10Schristos ciph_d[0].out = out + 5 + 16;
19360662d10Schristos memcpy(ciph_d[0].out - 16, IVs, 16);
19460662d10Schristos memcpy(ciph_d[0].iv, IVs, 16);
19560662d10Schristos IVs += 16;
19660662d10Schristos
19760662d10Schristos for (i = 1; i < x4; i++) {
19860662d10Schristos ciph_d[i].inp = hash_d[i].ptr = hash_d[i - 1].ptr + frag;
19960662d10Schristos ciph_d[i].out = ciph_d[i - 1].out + packlen;
20060662d10Schristos memcpy(ciph_d[i].out - 16, IVs, 16);
20160662d10Schristos memcpy(ciph_d[i].iv, IVs, 16);
20260662d10Schristos IVs += 16;
20360662d10Schristos }
20460662d10Schristos
20560662d10Schristos # if defined(BSWAP8)
20660662d10Schristos memcpy(blocks[0].c, key->md.data, 8);
20760662d10Schristos seqnum = BSWAP8(blocks[0].q[0]);
20860662d10Schristos # endif
20960662d10Schristos for (i = 0; i < x4; i++) {
21060662d10Schristos unsigned int len = (i == (x4 - 1) ? last : frag);
21160662d10Schristos # if !defined(BSWAP8)
21260662d10Schristos unsigned int carry, j;
21360662d10Schristos # endif
21460662d10Schristos
21560662d10Schristos ctx->A[i] = key->md.h[0];
21660662d10Schristos ctx->B[i] = key->md.h[1];
21760662d10Schristos ctx->C[i] = key->md.h[2];
21860662d10Schristos ctx->D[i] = key->md.h[3];
21960662d10Schristos ctx->E[i] = key->md.h[4];
22060662d10Schristos ctx->F[i] = key->md.h[5];
22160662d10Schristos ctx->G[i] = key->md.h[6];
22260662d10Schristos ctx->H[i] = key->md.h[7];
22360662d10Schristos
22460662d10Schristos /* fix seqnum */
22560662d10Schristos # if defined(BSWAP8)
22660662d10Schristos blocks[i].q[0] = BSWAP8(seqnum + i);
22760662d10Schristos # else
22860662d10Schristos for (carry = i, j = 8; j--;) {
22960662d10Schristos blocks[i].c[j] = ((u8 *)key->md.data)[j] + carry;
23060662d10Schristos carry = (blocks[i].c[j] - carry) >> (sizeof(carry) * 8 - 1);
23160662d10Schristos }
23260662d10Schristos # endif
23360662d10Schristos blocks[i].c[8] = ((u8 *)key->md.data)[8];
23460662d10Schristos blocks[i].c[9] = ((u8 *)key->md.data)[9];
23560662d10Schristos blocks[i].c[10] = ((u8 *)key->md.data)[10];
23660662d10Schristos /* fix length */
23760662d10Schristos blocks[i].c[11] = (u8)(len >> 8);
23860662d10Schristos blocks[i].c[12] = (u8)(len);
23960662d10Schristos
24060662d10Schristos memcpy(blocks[i].c + 13, hash_d[i].ptr, 64 - 13);
24160662d10Schristos hash_d[i].ptr += 64 - 13;
24260662d10Schristos hash_d[i].blocks = (len - (64 - 13)) / 64;
24360662d10Schristos
24460662d10Schristos edges[i].ptr = blocks[i].c;
24560662d10Schristos edges[i].blocks = 1;
24660662d10Schristos }
24760662d10Schristos
24860662d10Schristos /* hash 13-byte headers and first 64-13 bytes of inputs */
24960662d10Schristos sha256_multi_block(ctx, edges, n4x);
25060662d10Schristos /* hash bulk inputs */
25160662d10Schristos # define MAXCHUNKSIZE 2048
25260662d10Schristos # if MAXCHUNKSIZE%64
25360662d10Schristos # error "MAXCHUNKSIZE is not divisible by 64"
25460662d10Schristos # elif MAXCHUNKSIZE
25560662d10Schristos /*
25660662d10Schristos * goal is to minimize pressure on L1 cache by moving in shorter steps,
25760662d10Schristos * so that hashed data is still in the cache by the time we encrypt it
25860662d10Schristos */
25960662d10Schristos minblocks = ((frag <= last ? frag : last) - (64 - 13)) / 64;
26060662d10Schristos if (minblocks > MAXCHUNKSIZE / 64) {
26160662d10Schristos for (i = 0; i < x4; i++) {
26260662d10Schristos edges[i].ptr = hash_d[i].ptr;
26360662d10Schristos edges[i].blocks = MAXCHUNKSIZE / 64;
26460662d10Schristos ciph_d[i].blocks = MAXCHUNKSIZE / 16;
26560662d10Schristos }
26660662d10Schristos do {
26760662d10Schristos sha256_multi_block(ctx, edges, n4x);
26860662d10Schristos aesni_multi_cbc_encrypt(ciph_d, &key->ks, n4x);
26960662d10Schristos
27060662d10Schristos for (i = 0; i < x4; i++) {
27160662d10Schristos edges[i].ptr = hash_d[i].ptr += MAXCHUNKSIZE;
27260662d10Schristos hash_d[i].blocks -= MAXCHUNKSIZE / 64;
27360662d10Schristos edges[i].blocks = MAXCHUNKSIZE / 64;
27460662d10Schristos ciph_d[i].inp += MAXCHUNKSIZE;
27560662d10Schristos ciph_d[i].out += MAXCHUNKSIZE;
27660662d10Schristos ciph_d[i].blocks = MAXCHUNKSIZE / 16;
27760662d10Schristos memcpy(ciph_d[i].iv, ciph_d[i].out - 16, 16);
27860662d10Schristos }
27960662d10Schristos processed += MAXCHUNKSIZE;
28060662d10Schristos minblocks -= MAXCHUNKSIZE / 64;
28160662d10Schristos } while (minblocks > MAXCHUNKSIZE / 64);
28260662d10Schristos }
28360662d10Schristos # endif
28460662d10Schristos # undef MAXCHUNKSIZE
28560662d10Schristos sha256_multi_block(ctx, hash_d, n4x);
28660662d10Schristos
28760662d10Schristos memset(blocks, 0, sizeof(blocks));
28860662d10Schristos for (i = 0; i < x4; i++) {
28960662d10Schristos unsigned int len = (i == (x4 - 1) ? last : frag),
29060662d10Schristos off = hash_d[i].blocks * 64;
29160662d10Schristos const unsigned char *ptr = hash_d[i].ptr + off;
29260662d10Schristos
29360662d10Schristos off = (len - processed) - (64 - 13) - off; /* remainder actually */
29460662d10Schristos memcpy(blocks[i].c, ptr, off);
29560662d10Schristos blocks[i].c[off] = 0x80;
29660662d10Schristos len += 64 + 13; /* 64 is HMAC header */
29760662d10Schristos len *= 8; /* convert to bits */
29860662d10Schristos if (off < (64 - 8)) {
29960662d10Schristos # ifdef BSWAP4
30060662d10Schristos blocks[i].d[15] = BSWAP4(len);
30160662d10Schristos # else
30260662d10Schristos PUTU32(blocks[i].c + 60, len);
30360662d10Schristos # endif
30460662d10Schristos edges[i].blocks = 1;
30560662d10Schristos } else {
30660662d10Schristos # ifdef BSWAP4
30760662d10Schristos blocks[i].d[31] = BSWAP4(len);
30860662d10Schristos # else
30960662d10Schristos PUTU32(blocks[i].c + 124, len);
31060662d10Schristos # endif
31160662d10Schristos edges[i].blocks = 2;
31260662d10Schristos }
31360662d10Schristos edges[i].ptr = blocks[i].c;
31460662d10Schristos }
31560662d10Schristos
31660662d10Schristos /* hash input tails and finalize */
31760662d10Schristos sha256_multi_block(ctx, edges, n4x);
31860662d10Schristos
31960662d10Schristos memset(blocks, 0, sizeof(blocks));
32060662d10Schristos for (i = 0; i < x4; i++) {
32160662d10Schristos # ifdef BSWAP4
32260662d10Schristos blocks[i].d[0] = BSWAP4(ctx->A[i]);
32360662d10Schristos ctx->A[i] = key->tail.h[0];
32460662d10Schristos blocks[i].d[1] = BSWAP4(ctx->B[i]);
32560662d10Schristos ctx->B[i] = key->tail.h[1];
32660662d10Schristos blocks[i].d[2] = BSWAP4(ctx->C[i]);
32760662d10Schristos ctx->C[i] = key->tail.h[2];
32860662d10Schristos blocks[i].d[3] = BSWAP4(ctx->D[i]);
32960662d10Schristos ctx->D[i] = key->tail.h[3];
33060662d10Schristos blocks[i].d[4] = BSWAP4(ctx->E[i]);
33160662d10Schristos ctx->E[i] = key->tail.h[4];
33260662d10Schristos blocks[i].d[5] = BSWAP4(ctx->F[i]);
33360662d10Schristos ctx->F[i] = key->tail.h[5];
33460662d10Schristos blocks[i].d[6] = BSWAP4(ctx->G[i]);
33560662d10Schristos ctx->G[i] = key->tail.h[6];
33660662d10Schristos blocks[i].d[7] = BSWAP4(ctx->H[i]);
33760662d10Schristos ctx->H[i] = key->tail.h[7];
33860662d10Schristos blocks[i].c[32] = 0x80;
33960662d10Schristos blocks[i].d[15] = BSWAP4((64 + 32) * 8);
34060662d10Schristos # else
34160662d10Schristos PUTU32(blocks[i].c + 0, ctx->A[i]);
34260662d10Schristos ctx->A[i] = key->tail.h[0];
34360662d10Schristos PUTU32(blocks[i].c + 4, ctx->B[i]);
34460662d10Schristos ctx->B[i] = key->tail.h[1];
34560662d10Schristos PUTU32(blocks[i].c + 8, ctx->C[i]);
34660662d10Schristos ctx->C[i] = key->tail.h[2];
34760662d10Schristos PUTU32(blocks[i].c + 12, ctx->D[i]);
34860662d10Schristos ctx->D[i] = key->tail.h[3];
34960662d10Schristos PUTU32(blocks[i].c + 16, ctx->E[i]);
35060662d10Schristos ctx->E[i] = key->tail.h[4];
35160662d10Schristos PUTU32(blocks[i].c + 20, ctx->F[i]);
35260662d10Schristos ctx->F[i] = key->tail.h[5];
35360662d10Schristos PUTU32(blocks[i].c + 24, ctx->G[i]);
35460662d10Schristos ctx->G[i] = key->tail.h[6];
35560662d10Schristos PUTU32(blocks[i].c + 28, ctx->H[i]);
35660662d10Schristos ctx->H[i] = key->tail.h[7];
35760662d10Schristos blocks[i].c[32] = 0x80;
35860662d10Schristos PUTU32(blocks[i].c + 60, (64 + 32) * 8);
35960662d10Schristos # endif
36060662d10Schristos edges[i].ptr = blocks[i].c;
36160662d10Schristos edges[i].blocks = 1;
36260662d10Schristos }
36360662d10Schristos
36460662d10Schristos /* finalize MACs */
36560662d10Schristos sha256_multi_block(ctx, edges, n4x);
36660662d10Schristos
36760662d10Schristos for (i = 0; i < x4; i++) {
36860662d10Schristos unsigned int len = (i == (x4 - 1) ? last : frag), pad, j;
36960662d10Schristos unsigned char *out0 = out;
37060662d10Schristos
37160662d10Schristos memcpy(ciph_d[i].out, ciph_d[i].inp, len - processed);
37260662d10Schristos ciph_d[i].inp = ciph_d[i].out;
37360662d10Schristos
37460662d10Schristos out += 5 + 16 + len;
37560662d10Schristos
37660662d10Schristos /* write MAC */
37760662d10Schristos PUTU32(out + 0, ctx->A[i]);
37860662d10Schristos PUTU32(out + 4, ctx->B[i]);
37960662d10Schristos PUTU32(out + 8, ctx->C[i]);
38060662d10Schristos PUTU32(out + 12, ctx->D[i]);
38160662d10Schristos PUTU32(out + 16, ctx->E[i]);
38260662d10Schristos PUTU32(out + 20, ctx->F[i]);
38360662d10Schristos PUTU32(out + 24, ctx->G[i]);
38460662d10Schristos PUTU32(out + 28, ctx->H[i]);
38560662d10Schristos out += 32;
38660662d10Schristos len += 32;
38760662d10Schristos
38860662d10Schristos /* pad */
38960662d10Schristos pad = 15 - len % 16;
39060662d10Schristos for (j = 0; j <= pad; j++)
39160662d10Schristos *(out++) = pad;
39260662d10Schristos len += pad + 1;
39360662d10Schristos
39460662d10Schristos ciph_d[i].blocks = (len - processed) / 16;
39560662d10Schristos len += 16; /* account for explicit iv */
39660662d10Schristos
39760662d10Schristos /* arrange header */
39860662d10Schristos out0[0] = ((u8 *)key->md.data)[8];
39960662d10Schristos out0[1] = ((u8 *)key->md.data)[9];
40060662d10Schristos out0[2] = ((u8 *)key->md.data)[10];
40160662d10Schristos out0[3] = (u8)(len >> 8);
40260662d10Schristos out0[4] = (u8)(len);
40360662d10Schristos
40460662d10Schristos ret += len + 5;
40560662d10Schristos inp += frag;
40660662d10Schristos }
40760662d10Schristos
40860662d10Schristos aesni_multi_cbc_encrypt(ciph_d, &key->ks, n4x);
40960662d10Schristos
41060662d10Schristos OPENSSL_cleanse(blocks, sizeof(blocks));
41160662d10Schristos OPENSSL_cleanse(ctx, sizeof(*ctx));
41260662d10Schristos
41360662d10Schristos return ret;
41460662d10Schristos }
41560662d10Schristos # endif
41660662d10Schristos
aesni_cbc_hmac_sha256_cipher(EVP_CIPHER_CTX * ctx,unsigned char * out,const unsigned char * in,size_t len)41760662d10Schristos static int aesni_cbc_hmac_sha256_cipher(EVP_CIPHER_CTX *ctx,
41860662d10Schristos unsigned char *out,
41960662d10Schristos const unsigned char *in, size_t len)
42060662d10Schristos {
42160662d10Schristos EVP_AES_HMAC_SHA256 *key = data(ctx);
42260662d10Schristos unsigned int l;
42360662d10Schristos size_t plen = key->payload_length, iv = 0, /* explicit IV in TLS 1.1 and
42460662d10Schristos * later */
42560662d10Schristos sha_off = 0;
42660662d10Schristos # if defined(STITCHED_CALL)
42760662d10Schristos size_t aes_off = 0, blocks;
42860662d10Schristos
42960662d10Schristos sha_off = SHA256_CBLOCK - key->md.num;
43060662d10Schristos # endif
43160662d10Schristos
43260662d10Schristos key->payload_length = NO_PAYLOAD_LENGTH;
43360662d10Schristos
43460662d10Schristos if (len % AES_BLOCK_SIZE)
43560662d10Schristos return 0;
43660662d10Schristos
437*1dcdf01fSchristos if (EVP_CIPHER_CTX_encrypting(ctx)) {
43860662d10Schristos if (plen == NO_PAYLOAD_LENGTH)
43960662d10Schristos plen = len;
44060662d10Schristos else if (len !=
44160662d10Schristos ((plen + SHA256_DIGEST_LENGTH +
44260662d10Schristos AES_BLOCK_SIZE) & -AES_BLOCK_SIZE))
44360662d10Schristos return 0;
44460662d10Schristos else if (key->aux.tls_ver >= TLS1_1_VERSION)
44560662d10Schristos iv = AES_BLOCK_SIZE;
44660662d10Schristos
44760662d10Schristos # if defined(STITCHED_CALL)
44860662d10Schristos /*
44960662d10Schristos * Assembly stitch handles AVX-capable processors, but its
45060662d10Schristos * performance is not optimal on AMD Jaguar, ~40% worse, for
45160662d10Schristos * unknown reasons. Incidentally processor in question supports
45260662d10Schristos * AVX, but not AMD-specific XOP extension, which can be used
45360662d10Schristos * to identify it and avoid stitch invocation. So that after we
45460662d10Schristos * establish that current CPU supports AVX, we even see if it's
45560662d10Schristos * either even XOP-capable Bulldozer-based or GenuineIntel one.
456*1dcdf01fSchristos * But SHAEXT-capable go ahead...
45760662d10Schristos */
458*1dcdf01fSchristos if (((OPENSSL_ia32cap_P[2] & (1 << 29)) || /* SHAEXT? */
459*1dcdf01fSchristos ((OPENSSL_ia32cap_P[1] & (1 << (60 - 32))) && /* AVX? */
46060662d10Schristos ((OPENSSL_ia32cap_P[1] & (1 << (43 - 32))) /* XOP? */
461*1dcdf01fSchristos | (OPENSSL_ia32cap_P[0] & (1 << 30))))) && /* "Intel CPU"? */
46260662d10Schristos plen > (sha_off + iv) &&
46360662d10Schristos (blocks = (plen - (sha_off + iv)) / SHA256_CBLOCK)) {
46460662d10Schristos SHA256_Update(&key->md, in + iv, sha_off);
46560662d10Schristos
46660662d10Schristos (void)aesni_cbc_sha256_enc(in, out, blocks, &key->ks,
467*1dcdf01fSchristos EVP_CIPHER_CTX_iv_noconst(ctx),
468*1dcdf01fSchristos &key->md, in + iv + sha_off);
46960662d10Schristos blocks *= SHA256_CBLOCK;
47060662d10Schristos aes_off += blocks;
47160662d10Schristos sha_off += blocks;
47260662d10Schristos key->md.Nh += blocks >> 29;
47360662d10Schristos key->md.Nl += blocks <<= 3;
47460662d10Schristos if (key->md.Nl < (unsigned int)blocks)
47560662d10Schristos key->md.Nh++;
47660662d10Schristos } else {
47760662d10Schristos sha_off = 0;
47860662d10Schristos }
47960662d10Schristos # endif
48060662d10Schristos sha_off += iv;
48160662d10Schristos SHA256_Update(&key->md, in + sha_off, plen - sha_off);
48260662d10Schristos
48360662d10Schristos if (plen != len) { /* "TLS" mode of operation */
48460662d10Schristos if (in != out)
48560662d10Schristos memcpy(out + aes_off, in + aes_off, plen - aes_off);
48660662d10Schristos
48760662d10Schristos /* calculate HMAC and append it to payload */
48860662d10Schristos SHA256_Final(out + plen, &key->md);
48960662d10Schristos key->md = key->tail;
49060662d10Schristos SHA256_Update(&key->md, out + plen, SHA256_DIGEST_LENGTH);
49160662d10Schristos SHA256_Final(out + plen, &key->md);
49260662d10Schristos
49360662d10Schristos /* pad the payload|hmac */
49460662d10Schristos plen += SHA256_DIGEST_LENGTH;
49560662d10Schristos for (l = len - plen - 1; plen < len; plen++)
49660662d10Schristos out[plen] = l;
49760662d10Schristos /* encrypt HMAC|padding at once */
49860662d10Schristos aesni_cbc_encrypt(out + aes_off, out + aes_off, len - aes_off,
499*1dcdf01fSchristos &key->ks, EVP_CIPHER_CTX_iv_noconst(ctx), 1);
50060662d10Schristos } else {
50160662d10Schristos aesni_cbc_encrypt(in + aes_off, out + aes_off, len - aes_off,
502*1dcdf01fSchristos &key->ks, EVP_CIPHER_CTX_iv_noconst(ctx), 1);
50360662d10Schristos }
50460662d10Schristos } else {
50560662d10Schristos union {
50660662d10Schristos unsigned int u[SHA256_DIGEST_LENGTH / sizeof(unsigned int)];
50760662d10Schristos unsigned char c[64 + SHA256_DIGEST_LENGTH];
50860662d10Schristos } mac, *pmac;
50960662d10Schristos
51060662d10Schristos /* arrange cache line alignment */
51160662d10Schristos pmac = (void *)(((size_t)mac.c + 63) & ((size_t)0 - 64));
51260662d10Schristos
51360662d10Schristos /* decrypt HMAC|padding at once */
514*1dcdf01fSchristos aesni_cbc_encrypt(in, out, len, &key->ks,
515*1dcdf01fSchristos EVP_CIPHER_CTX_iv_noconst(ctx), 0);
51660662d10Schristos
51760662d10Schristos if (plen != NO_PAYLOAD_LENGTH) { /* "TLS" mode of operation */
51860662d10Schristos size_t inp_len, mask, j, i;
51960662d10Schristos unsigned int res, maxpad, pad, bitlen;
52060662d10Schristos int ret = 1;
52160662d10Schristos union {
52260662d10Schristos unsigned int u[SHA_LBLOCK];
52360662d10Schristos unsigned char c[SHA256_CBLOCK];
52460662d10Schristos } *data = (void *)key->md.data;
52560662d10Schristos
52660662d10Schristos if ((key->aux.tls_aad[plen - 4] << 8 | key->aux.tls_aad[plen - 3])
52760662d10Schristos >= TLS1_1_VERSION)
52860662d10Schristos iv = AES_BLOCK_SIZE;
52960662d10Schristos
53060662d10Schristos if (len < (iv + SHA256_DIGEST_LENGTH + 1))
53160662d10Schristos return 0;
53260662d10Schristos
53360662d10Schristos /* omit explicit iv */
53460662d10Schristos out += iv;
53560662d10Schristos len -= iv;
53660662d10Schristos
53760662d10Schristos /* figure out payload length */
53860662d10Schristos pad = out[len - 1];
53960662d10Schristos maxpad = len - (SHA256_DIGEST_LENGTH + 1);
54060662d10Schristos maxpad |= (255 - maxpad) >> (sizeof(maxpad) * 8 - 8);
54160662d10Schristos maxpad &= 255;
54260662d10Schristos
543*1dcdf01fSchristos mask = constant_time_ge(maxpad, pad);
544*1dcdf01fSchristos ret &= mask;
545*1dcdf01fSchristos /*
546*1dcdf01fSchristos * If pad is invalid then we will fail the above test but we must
547*1dcdf01fSchristos * continue anyway because we are in constant time code. However,
548*1dcdf01fSchristos * we'll use the maxpad value instead of the supplied pad to make
549*1dcdf01fSchristos * sure we perform well defined pointer arithmetic.
550*1dcdf01fSchristos */
551*1dcdf01fSchristos pad = constant_time_select(mask, pad, maxpad);
55260662d10Schristos
55360662d10Schristos inp_len = len - (SHA256_DIGEST_LENGTH + pad + 1);
55460662d10Schristos
55560662d10Schristos key->aux.tls_aad[plen - 2] = inp_len >> 8;
55660662d10Schristos key->aux.tls_aad[plen - 1] = inp_len;
55760662d10Schristos
55860662d10Schristos /* calculate HMAC */
55960662d10Schristos key->md = key->head;
56060662d10Schristos SHA256_Update(&key->md, key->aux.tls_aad, plen);
56160662d10Schristos
562*1dcdf01fSchristos # if 1 /* see original reference version in #else */
56360662d10Schristos len -= SHA256_DIGEST_LENGTH; /* amend mac */
56460662d10Schristos if (len >= (256 + SHA256_CBLOCK)) {
56560662d10Schristos j = (len - (256 + SHA256_CBLOCK)) & (0 - SHA256_CBLOCK);
56660662d10Schristos j += SHA256_CBLOCK - key->md.num;
56760662d10Schristos SHA256_Update(&key->md, out, j);
56860662d10Schristos out += j;
56960662d10Schristos len -= j;
57060662d10Schristos inp_len -= j;
57160662d10Schristos }
57260662d10Schristos
57360662d10Schristos /* but pretend as if we hashed padded payload */
57460662d10Schristos bitlen = key->md.Nl + (inp_len << 3); /* at most 18 bits */
57560662d10Schristos # ifdef BSWAP4
57660662d10Schristos bitlen = BSWAP4(bitlen);
57760662d10Schristos # else
57860662d10Schristos mac.c[0] = 0;
57960662d10Schristos mac.c[1] = (unsigned char)(bitlen >> 16);
58060662d10Schristos mac.c[2] = (unsigned char)(bitlen >> 8);
58160662d10Schristos mac.c[3] = (unsigned char)bitlen;
58260662d10Schristos bitlen = mac.u[0];
58360662d10Schristos # endif
58460662d10Schristos
58560662d10Schristos pmac->u[0] = 0;
58660662d10Schristos pmac->u[1] = 0;
58760662d10Schristos pmac->u[2] = 0;
58860662d10Schristos pmac->u[3] = 0;
58960662d10Schristos pmac->u[4] = 0;
59060662d10Schristos pmac->u[5] = 0;
59160662d10Schristos pmac->u[6] = 0;
59260662d10Schristos pmac->u[7] = 0;
59360662d10Schristos
59460662d10Schristos for (res = key->md.num, j = 0; j < len; j++) {
59560662d10Schristos size_t c = out[j];
59660662d10Schristos mask = (j - inp_len) >> (sizeof(j) * 8 - 8);
59760662d10Schristos c &= mask;
59860662d10Schristos c |= 0x80 & ~mask & ~((inp_len - j) >> (sizeof(j) * 8 - 8));
59960662d10Schristos data->c[res++] = (unsigned char)c;
60060662d10Schristos
60160662d10Schristos if (res != SHA256_CBLOCK)
60260662d10Schristos continue;
60360662d10Schristos
60460662d10Schristos /* j is not incremented yet */
60560662d10Schristos mask = 0 - ((inp_len + 7 - j) >> (sizeof(j) * 8 - 1));
60660662d10Schristos data->u[SHA_LBLOCK - 1] |= bitlen & mask;
60760662d10Schristos sha256_block_data_order(&key->md, data, 1);
60860662d10Schristos mask &= 0 - ((j - inp_len - 72) >> (sizeof(j) * 8 - 1));
60960662d10Schristos pmac->u[0] |= key->md.h[0] & mask;
61060662d10Schristos pmac->u[1] |= key->md.h[1] & mask;
61160662d10Schristos pmac->u[2] |= key->md.h[2] & mask;
61260662d10Schristos pmac->u[3] |= key->md.h[3] & mask;
61360662d10Schristos pmac->u[4] |= key->md.h[4] & mask;
61460662d10Schristos pmac->u[5] |= key->md.h[5] & mask;
61560662d10Schristos pmac->u[6] |= key->md.h[6] & mask;
61660662d10Schristos pmac->u[7] |= key->md.h[7] & mask;
61760662d10Schristos res = 0;
61860662d10Schristos }
61960662d10Schristos
62060662d10Schristos for (i = res; i < SHA256_CBLOCK; i++, j++)
62160662d10Schristos data->c[i] = 0;
62260662d10Schristos
62360662d10Schristos if (res > SHA256_CBLOCK - 8) {
62460662d10Schristos mask = 0 - ((inp_len + 8 - j) >> (sizeof(j) * 8 - 1));
62560662d10Schristos data->u[SHA_LBLOCK - 1] |= bitlen & mask;
62660662d10Schristos sha256_block_data_order(&key->md, data, 1);
62760662d10Schristos mask &= 0 - ((j - inp_len - 73) >> (sizeof(j) * 8 - 1));
62860662d10Schristos pmac->u[0] |= key->md.h[0] & mask;
62960662d10Schristos pmac->u[1] |= key->md.h[1] & mask;
63060662d10Schristos pmac->u[2] |= key->md.h[2] & mask;
63160662d10Schristos pmac->u[3] |= key->md.h[3] & mask;
63260662d10Schristos pmac->u[4] |= key->md.h[4] & mask;
63360662d10Schristos pmac->u[5] |= key->md.h[5] & mask;
63460662d10Schristos pmac->u[6] |= key->md.h[6] & mask;
63560662d10Schristos pmac->u[7] |= key->md.h[7] & mask;
63660662d10Schristos
63760662d10Schristos memset(data, 0, SHA256_CBLOCK);
63860662d10Schristos j += 64;
63960662d10Schristos }
64060662d10Schristos data->u[SHA_LBLOCK - 1] = bitlen;
64160662d10Schristos sha256_block_data_order(&key->md, data, 1);
64260662d10Schristos mask = 0 - ((j - inp_len - 73) >> (sizeof(j) * 8 - 1));
64360662d10Schristos pmac->u[0] |= key->md.h[0] & mask;
64460662d10Schristos pmac->u[1] |= key->md.h[1] & mask;
64560662d10Schristos pmac->u[2] |= key->md.h[2] & mask;
64660662d10Schristos pmac->u[3] |= key->md.h[3] & mask;
64760662d10Schristos pmac->u[4] |= key->md.h[4] & mask;
64860662d10Schristos pmac->u[5] |= key->md.h[5] & mask;
64960662d10Schristos pmac->u[6] |= key->md.h[6] & mask;
65060662d10Schristos pmac->u[7] |= key->md.h[7] & mask;
65160662d10Schristos
65260662d10Schristos # ifdef BSWAP4
65360662d10Schristos pmac->u[0] = BSWAP4(pmac->u[0]);
65460662d10Schristos pmac->u[1] = BSWAP4(pmac->u[1]);
65560662d10Schristos pmac->u[2] = BSWAP4(pmac->u[2]);
65660662d10Schristos pmac->u[3] = BSWAP4(pmac->u[3]);
65760662d10Schristos pmac->u[4] = BSWAP4(pmac->u[4]);
65860662d10Schristos pmac->u[5] = BSWAP4(pmac->u[5]);
65960662d10Schristos pmac->u[6] = BSWAP4(pmac->u[6]);
66060662d10Schristos pmac->u[7] = BSWAP4(pmac->u[7]);
66160662d10Schristos # else
66260662d10Schristos for (i = 0; i < 8; i++) {
66360662d10Schristos res = pmac->u[i];
66460662d10Schristos pmac->c[4 * i + 0] = (unsigned char)(res >> 24);
66560662d10Schristos pmac->c[4 * i + 1] = (unsigned char)(res >> 16);
66660662d10Schristos pmac->c[4 * i + 2] = (unsigned char)(res >> 8);
66760662d10Schristos pmac->c[4 * i + 3] = (unsigned char)res;
66860662d10Schristos }
66960662d10Schristos # endif
67060662d10Schristos len += SHA256_DIGEST_LENGTH;
67160662d10Schristos # else
67260662d10Schristos SHA256_Update(&key->md, out, inp_len);
67360662d10Schristos res = key->md.num;
67460662d10Schristos SHA256_Final(pmac->c, &key->md);
67560662d10Schristos
67660662d10Schristos {
67760662d10Schristos unsigned int inp_blocks, pad_blocks;
67860662d10Schristos
67960662d10Schristos /* but pretend as if we hashed padded payload */
68060662d10Schristos inp_blocks =
68160662d10Schristos 1 + ((SHA256_CBLOCK - 9 - res) >> (sizeof(res) * 8 - 1));
68260662d10Schristos res += (unsigned int)(len - inp_len);
68360662d10Schristos pad_blocks = res / SHA256_CBLOCK;
68460662d10Schristos res %= SHA256_CBLOCK;
68560662d10Schristos pad_blocks +=
68660662d10Schristos 1 + ((SHA256_CBLOCK - 9 - res) >> (sizeof(res) * 8 - 1));
68760662d10Schristos for (; inp_blocks < pad_blocks; inp_blocks++)
68860662d10Schristos sha1_block_data_order(&key->md, data, 1);
68960662d10Schristos }
690*1dcdf01fSchristos # endif /* pre-lucky-13 reference version of above */
69160662d10Schristos key->md = key->tail;
69260662d10Schristos SHA256_Update(&key->md, pmac->c, SHA256_DIGEST_LENGTH);
69360662d10Schristos SHA256_Final(pmac->c, &key->md);
69460662d10Schristos
69560662d10Schristos /* verify HMAC */
69660662d10Schristos out += inp_len;
69760662d10Schristos len -= inp_len;
698*1dcdf01fSchristos # if 1 /* see original reference version in #else */
69960662d10Schristos {
70060662d10Schristos unsigned char *p =
70160662d10Schristos out + len - 1 - maxpad - SHA256_DIGEST_LENGTH;
70260662d10Schristos size_t off = out - p;
70360662d10Schristos unsigned int c, cmask;
70460662d10Schristos
70560662d10Schristos maxpad += SHA256_DIGEST_LENGTH;
70660662d10Schristos for (res = 0, i = 0, j = 0; j < maxpad; j++) {
70760662d10Schristos c = p[j];
70860662d10Schristos cmask =
70960662d10Schristos ((int)(j - off - SHA256_DIGEST_LENGTH)) >>
71060662d10Schristos (sizeof(int) * 8 - 1);
71160662d10Schristos res |= (c ^ pad) & ~cmask; /* ... and padding */
71260662d10Schristos cmask &= ((int)(off - 1 - j)) >> (sizeof(int) * 8 - 1);
71360662d10Schristos res |= (c ^ pmac->c[i]) & cmask;
71460662d10Schristos i += 1 & cmask;
71560662d10Schristos }
71660662d10Schristos maxpad -= SHA256_DIGEST_LENGTH;
71760662d10Schristos
71860662d10Schristos res = 0 - ((0 - res) >> (sizeof(res) * 8 - 1));
71960662d10Schristos ret &= (int)~res;
72060662d10Schristos }
721*1dcdf01fSchristos # else /* pre-lucky-13 reference version of above */
72260662d10Schristos for (res = 0, i = 0; i < SHA256_DIGEST_LENGTH; i++)
72360662d10Schristos res |= out[i] ^ pmac->c[i];
72460662d10Schristos res = 0 - ((0 - res) >> (sizeof(res) * 8 - 1));
72560662d10Schristos ret &= (int)~res;
72660662d10Schristos
72760662d10Schristos /* verify padding */
72860662d10Schristos pad = (pad & ~res) | (maxpad & res);
72960662d10Schristos out = out + len - 1 - pad;
73060662d10Schristos for (res = 0, i = 0; i < pad; i++)
73160662d10Schristos res |= out[i] ^ pad;
73260662d10Schristos
73360662d10Schristos res = (0 - res) >> (sizeof(res) * 8 - 1);
73460662d10Schristos ret &= (int)~res;
73560662d10Schristos # endif
73660662d10Schristos return ret;
73760662d10Schristos } else {
73860662d10Schristos SHA256_Update(&key->md, out, len);
73960662d10Schristos }
74060662d10Schristos }
74160662d10Schristos
74260662d10Schristos return 1;
74360662d10Schristos }
74460662d10Schristos
aesni_cbc_hmac_sha256_ctrl(EVP_CIPHER_CTX * ctx,int type,int arg,void * ptr)74560662d10Schristos static int aesni_cbc_hmac_sha256_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg,
74660662d10Schristos void *ptr)
74760662d10Schristos {
74860662d10Schristos EVP_AES_HMAC_SHA256 *key = data(ctx);
749*1dcdf01fSchristos unsigned int u_arg = (unsigned int)arg;
75060662d10Schristos
75160662d10Schristos switch (type) {
75260662d10Schristos case EVP_CTRL_AEAD_SET_MAC_KEY:
75360662d10Schristos {
75460662d10Schristos unsigned int i;
75560662d10Schristos unsigned char hmac_key[64];
75660662d10Schristos
75760662d10Schristos memset(hmac_key, 0, sizeof(hmac_key));
75860662d10Schristos
759*1dcdf01fSchristos if (arg < 0)
760*1dcdf01fSchristos return -1;
761*1dcdf01fSchristos
762*1dcdf01fSchristos if (u_arg > sizeof(hmac_key)) {
76360662d10Schristos SHA256_Init(&key->head);
76460662d10Schristos SHA256_Update(&key->head, ptr, arg);
76560662d10Schristos SHA256_Final(hmac_key, &key->head);
76660662d10Schristos } else {
76760662d10Schristos memcpy(hmac_key, ptr, arg);
76860662d10Schristos }
76960662d10Schristos
77060662d10Schristos for (i = 0; i < sizeof(hmac_key); i++)
77160662d10Schristos hmac_key[i] ^= 0x36; /* ipad */
77260662d10Schristos SHA256_Init(&key->head);
77360662d10Schristos SHA256_Update(&key->head, hmac_key, sizeof(hmac_key));
77460662d10Schristos
77560662d10Schristos for (i = 0; i < sizeof(hmac_key); i++)
77660662d10Schristos hmac_key[i] ^= 0x36 ^ 0x5c; /* opad */
77760662d10Schristos SHA256_Init(&key->tail);
77860662d10Schristos SHA256_Update(&key->tail, hmac_key, sizeof(hmac_key));
77960662d10Schristos
78060662d10Schristos OPENSSL_cleanse(hmac_key, sizeof(hmac_key));
78160662d10Schristos
78260662d10Schristos return 1;
78360662d10Schristos }
78460662d10Schristos case EVP_CTRL_AEAD_TLS1_AAD:
78560662d10Schristos {
78660662d10Schristos unsigned char *p = ptr;
787*1dcdf01fSchristos unsigned int len;
78860662d10Schristos
78960662d10Schristos if (arg != EVP_AEAD_TLS1_AAD_LEN)
79060662d10Schristos return -1;
79160662d10Schristos
792*1dcdf01fSchristos len = p[arg - 2] << 8 | p[arg - 1];
793*1dcdf01fSchristos
794*1dcdf01fSchristos if (EVP_CIPHER_CTX_encrypting(ctx)) {
79560662d10Schristos key->payload_length = len;
79660662d10Schristos if ((key->aux.tls_ver =
79760662d10Schristos p[arg - 4] << 8 | p[arg - 3]) >= TLS1_1_VERSION) {
798*1dcdf01fSchristos if (len < AES_BLOCK_SIZE)
799*1dcdf01fSchristos return 0;
80060662d10Schristos len -= AES_BLOCK_SIZE;
80160662d10Schristos p[arg - 2] = len >> 8;
80260662d10Schristos p[arg - 1] = len;
80360662d10Schristos }
80460662d10Schristos key->md = key->head;
80560662d10Schristos SHA256_Update(&key->md, p, arg);
80660662d10Schristos
80760662d10Schristos return (int)(((len + SHA256_DIGEST_LENGTH +
80860662d10Schristos AES_BLOCK_SIZE) & -AES_BLOCK_SIZE)
80960662d10Schristos - len);
81060662d10Schristos } else {
81160662d10Schristos memcpy(key->aux.tls_aad, ptr, arg);
81260662d10Schristos key->payload_length = arg;
81360662d10Schristos
81460662d10Schristos return SHA256_DIGEST_LENGTH;
81560662d10Schristos }
81660662d10Schristos }
817*1dcdf01fSchristos # if !defined(OPENSSL_NO_MULTIBLOCK)
81860662d10Schristos case EVP_CTRL_TLS1_1_MULTIBLOCK_MAX_BUFSIZE:
81960662d10Schristos return (int)(5 + 16 + ((arg + 32 + 16) & -16));
82060662d10Schristos case EVP_CTRL_TLS1_1_MULTIBLOCK_AAD:
82160662d10Schristos {
82260662d10Schristos EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param =
82360662d10Schristos (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *) ptr;
82460662d10Schristos unsigned int n4x = 1, x4;
82560662d10Schristos unsigned int frag, last, packlen, inp_len;
82660662d10Schristos
827*1dcdf01fSchristos if (arg < 0)
828*1dcdf01fSchristos return -1;
829*1dcdf01fSchristos
830*1dcdf01fSchristos if (u_arg < sizeof(EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM))
83160662d10Schristos return -1;
83260662d10Schristos
83360662d10Schristos inp_len = param->inp[11] << 8 | param->inp[12];
83460662d10Schristos
835*1dcdf01fSchristos if (EVP_CIPHER_CTX_encrypting(ctx)) {
83660662d10Schristos if ((param->inp[9] << 8 | param->inp[10]) < TLS1_1_VERSION)
83760662d10Schristos return -1;
83860662d10Schristos
83960662d10Schristos if (inp_len) {
84060662d10Schristos if (inp_len < 4096)
84160662d10Schristos return 0; /* too short */
84260662d10Schristos
84360662d10Schristos if (inp_len >= 8192 && OPENSSL_ia32cap_P[2] & (1 << 5))
84460662d10Schristos n4x = 2; /* AVX2 */
84560662d10Schristos } else if ((n4x = param->interleave / 4) && n4x <= 2)
84660662d10Schristos inp_len = param->len;
84760662d10Schristos else
84860662d10Schristos return -1;
84960662d10Schristos
85060662d10Schristos key->md = key->head;
85160662d10Schristos SHA256_Update(&key->md, param->inp, 13);
85260662d10Schristos
85360662d10Schristos x4 = 4 * n4x;
85460662d10Schristos n4x += 1;
85560662d10Schristos
85660662d10Schristos frag = inp_len >> n4x;
85760662d10Schristos last = inp_len + frag - (frag << n4x);
85860662d10Schristos if (last > frag && ((last + 13 + 9) % 64 < (x4 - 1))) {
85960662d10Schristos frag++;
86060662d10Schristos last -= x4 - 1;
86160662d10Schristos }
86260662d10Schristos
86360662d10Schristos packlen = 5 + 16 + ((frag + 32 + 16) & -16);
86460662d10Schristos packlen = (packlen << n4x) - packlen;
86560662d10Schristos packlen += 5 + 16 + ((last + 32 + 16) & -16);
86660662d10Schristos
86760662d10Schristos param->interleave = x4;
86860662d10Schristos
86960662d10Schristos return (int)packlen;
87060662d10Schristos } else
87160662d10Schristos return -1; /* not yet */
87260662d10Schristos }
87360662d10Schristos case EVP_CTRL_TLS1_1_MULTIBLOCK_ENCRYPT:
87460662d10Schristos {
87560662d10Schristos EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param =
87660662d10Schristos (EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *) ptr;
87760662d10Schristos
87860662d10Schristos return (int)tls1_1_multi_block_encrypt(key, param->out,
87960662d10Schristos param->inp, param->len,
88060662d10Schristos param->interleave / 4);
88160662d10Schristos }
88260662d10Schristos case EVP_CTRL_TLS1_1_MULTIBLOCK_DECRYPT:
88360662d10Schristos # endif
88460662d10Schristos default:
88560662d10Schristos return -1;
88660662d10Schristos }
88760662d10Schristos }
88860662d10Schristos
88960662d10Schristos static EVP_CIPHER aesni_128_cbc_hmac_sha256_cipher = {
89060662d10Schristos # ifdef NID_aes_128_cbc_hmac_sha256
89160662d10Schristos NID_aes_128_cbc_hmac_sha256,
89260662d10Schristos # else
89360662d10Schristos NID_undef,
89460662d10Schristos # endif
895*1dcdf01fSchristos AES_BLOCK_SIZE, 16, AES_BLOCK_SIZE,
89660662d10Schristos EVP_CIPH_CBC_MODE | EVP_CIPH_FLAG_DEFAULT_ASN1 |
89760662d10Schristos EVP_CIPH_FLAG_AEAD_CIPHER | EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK,
89860662d10Schristos aesni_cbc_hmac_sha256_init_key,
89960662d10Schristos aesni_cbc_hmac_sha256_cipher,
90060662d10Schristos NULL,
90160662d10Schristos sizeof(EVP_AES_HMAC_SHA256),
90260662d10Schristos EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_set_asn1_iv,
90360662d10Schristos EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_get_asn1_iv,
90460662d10Schristos aesni_cbc_hmac_sha256_ctrl,
90560662d10Schristos NULL
90660662d10Schristos };
90760662d10Schristos
90860662d10Schristos static EVP_CIPHER aesni_256_cbc_hmac_sha256_cipher = {
90960662d10Schristos # ifdef NID_aes_256_cbc_hmac_sha256
91060662d10Schristos NID_aes_256_cbc_hmac_sha256,
91160662d10Schristos # else
91260662d10Schristos NID_undef,
91360662d10Schristos # endif
914*1dcdf01fSchristos AES_BLOCK_SIZE, 32, AES_BLOCK_SIZE,
91560662d10Schristos EVP_CIPH_CBC_MODE | EVP_CIPH_FLAG_DEFAULT_ASN1 |
91660662d10Schristos EVP_CIPH_FLAG_AEAD_CIPHER | EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK,
91760662d10Schristos aesni_cbc_hmac_sha256_init_key,
91860662d10Schristos aesni_cbc_hmac_sha256_cipher,
91960662d10Schristos NULL,
92060662d10Schristos sizeof(EVP_AES_HMAC_SHA256),
92160662d10Schristos EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_set_asn1_iv,
92260662d10Schristos EVP_CIPH_FLAG_DEFAULT_ASN1 ? NULL : EVP_CIPHER_get_asn1_iv,
92360662d10Schristos aesni_cbc_hmac_sha256_ctrl,
92460662d10Schristos NULL
92560662d10Schristos };
92660662d10Schristos
EVP_aes_128_cbc_hmac_sha256(void)92760662d10Schristos const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha256(void)
92860662d10Schristos {
92960662d10Schristos return ((OPENSSL_ia32cap_P[1] & AESNI_CAPABLE) &&
93060662d10Schristos aesni_cbc_sha256_enc(NULL, NULL, 0, NULL, NULL, NULL, NULL) ?
93160662d10Schristos &aesni_128_cbc_hmac_sha256_cipher : NULL);
93260662d10Schristos }
93360662d10Schristos
EVP_aes_256_cbc_hmac_sha256(void)93460662d10Schristos const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha256(void)
93560662d10Schristos {
93660662d10Schristos return ((OPENSSL_ia32cap_P[1] & AESNI_CAPABLE) &&
93760662d10Schristos aesni_cbc_sha256_enc(NULL, NULL, 0, NULL, NULL, NULL, NULL) ?
93860662d10Schristos &aesni_256_cbc_hmac_sha256_cipher : NULL);
93960662d10Schristos }
94060662d10Schristos #else
EVP_aes_128_cbc_hmac_sha256(void)94160662d10Schristos const EVP_CIPHER *EVP_aes_128_cbc_hmac_sha256(void)
94260662d10Schristos {
94360662d10Schristos return NULL;
94460662d10Schristos }
94560662d10Schristos
EVP_aes_256_cbc_hmac_sha256(void)94660662d10Schristos const EVP_CIPHER *EVP_aes_256_cbc_hmac_sha256(void)
94760662d10Schristos {
94860662d10Schristos return NULL;
94960662d10Schristos }
950*1dcdf01fSchristos #endif /* AESNI_ASM */
951