--- /dev/null
+/*
+ * Copyright 2011-2019 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License 2.0 (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include "cipher_aes_cbc_hmac_sha.h"
+
+#ifndef AES_CBC_HMAC_SHA_CAPABLE
+int cipher_capable_aes_cbc_hmac_sha256(void)
+{
+ return 0;
+}
+#else
+
+# include "crypto/rand.h"
+# include "crypto/evp.h"
+# include "internal/constant_time.h"
+
+void sha256_block_data_order(void *c, const void *p, size_t len);
+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);
+
+int cipher_capable_aes_cbc_hmac_sha256(void)
+{
+ return AESNI_CBC_HMAC_SHA_CAPABLE
+ && aesni_cbc_sha256_enc(NULL, NULL, 0, NULL, NULL, NULL, NULL);
+}
+
+static int aesni_cbc_hmac_sha256_init_key(PROV_CIPHER_CTX *vctx,
+ const unsigned char *key,
+ size_t keylen)
+{
+ int ret;
+ PROV_AES_HMAC_SHA_CTX *ctx = (PROV_AES_HMAC_SHA_CTX *)vctx;
+ PROV_AES_HMAC_SHA256_CTX *sctx = (PROV_AES_HMAC_SHA256_CTX *)vctx;
+
+ if (ctx->base.enc)
+ ret = aesni_set_encrypt_key(key, ctx->base.keylen * 8, &ctx->ks);
+ else
+ ret = aesni_set_decrypt_key(key, ctx->base.keylen * 8, &ctx->ks);
+
+ SHA256_Init(&sctx->head); /* handy when benchmarking */
+ sctx->tail = sctx->head;
+ sctx->md = sctx->head;
+
+ ctx->payload_length = NO_PAYLOAD_LENGTH;
+
+ return ret < 0 ? 0 : 1;
+}
+
+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);
+}
+
+# if !defined(OPENSSL_NO_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;
+
+typedef struct {
+ const unsigned char *inp;
+ unsigned char *out;
+ int blocks;
+ u64 iv[2];
+} CIPH_DESC;
+
+void sha256_multi_block(SHA256_MB_CTX *, const HASH_DESC *, int);
+void aesni_multi_cbc_encrypt(CIPH_DESC *, void *, int);
+
+static size_t tls1_multi_block_encrypt(void *vctx,
+ unsigned char *out,
+ const unsigned char *inp,
+ size_t inp_len, int n4x)
+{ /* n4x is 1 or 2 */
+ PROV_AES_HMAC_SHA_CTX *ctx = (PROV_AES_HMAC_SHA_CTX *)vctx;
+ PROV_AES_HMAC_SHA256_CTX *sctx = (PROV_AES_HMAC_SHA256_CTX *)vctx;
+ 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 *mctx;
+ unsigned int frag, last, packlen, i;
+ unsigned int 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_ex(ctx->base.libctx, (IVs = blocks[0].c), 16 * x4) <= 0)
+ return 0;
+
+ mctx = (SHA256_MB_CTX *) (storage + 32 - ((size_t)storage % 32)); /* align */
+
+ 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, sctx->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
+
+ mctx->A[i] = sctx->md.h[0];
+ mctx->B[i] = sctx->md.h[1];
+ mctx->C[i] = sctx->md.h[2];
+ mctx->D[i] = sctx->md.h[3];
+ mctx->E[i] = sctx->md.h[4];
+ mctx->F[i] = sctx->md.h[5];
+ mctx->G[i] = sctx->md.h[6];
+ mctx->H[i] = sctx->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 *)sctx->md.data)[j] + carry;
+ carry = (blocks[i].c[j] - carry) >> (sizeof(carry) * 8 - 1);
+ }
+# endif
+ blocks[i].c[8] = ((u8 *)sctx->md.data)[8];
+ blocks[i].c[9] = ((u8 *)sctx->md.data)[9];
+ blocks[i].c[10] = ((u8 *)sctx->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(mctx, 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(mctx, edges, n4x);
+ aesni_multi_cbc_encrypt(ciph_d, &ctx->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(mctx, 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(mctx, edges, n4x);
+
+ memset(blocks, 0, sizeof(blocks));
+ for (i = 0; i < x4; i++) {
+# ifdef BSWAP4
+ blocks[i].d[0] = BSWAP4(mctx->A[i]);
+ mctx->A[i] = sctx->tail.h[0];
+ blocks[i].d[1] = BSWAP4(mctx->B[i]);
+ mctx->B[i] = sctx->tail.h[1];
+ blocks[i].d[2] = BSWAP4(mctx->C[i]);
+ mctx->C[i] = sctx->tail.h[2];
+ blocks[i].d[3] = BSWAP4(mctx->D[i]);
+ mctx->D[i] = sctx->tail.h[3];
+ blocks[i].d[4] = BSWAP4(mctx->E[i]);
+ mctx->E[i] = sctx->tail.h[4];
+ blocks[i].d[5] = BSWAP4(mctx->F[i]);
+ mctx->F[i] = sctx->tail.h[5];
+ blocks[i].d[6] = BSWAP4(mctx->G[i]);
+ mctx->G[i] = sctx->tail.h[6];
+ blocks[i].d[7] = BSWAP4(mctx->H[i]);
+ mctx->H[i] = sctx->tail.h[7];
+ blocks[i].c[32] = 0x80;
+ blocks[i].d[15] = BSWAP4((64 + 32) * 8);
+# else
+ PUTU32(blocks[i].c + 0, mctx->A[i]);
+ mctx->A[i] = sctx->tail.h[0];
+ PUTU32(blocks[i].c + 4, mctx->B[i]);
+ mctx->B[i] = sctx->tail.h[1];
+ PUTU32(blocks[i].c + 8, mctx->C[i]);
+ mctx->C[i] = sctx->tail.h[2];
+ PUTU32(blocks[i].c + 12, mctx->D[i]);
+ mctx->D[i] = sctx->tail.h[3];
+ PUTU32(blocks[i].c + 16, mctx->E[i]);
+ mctx->E[i] = sctx->tail.h[4];
+ PUTU32(blocks[i].c + 20, mctx->F[i]);
+ mctx->F[i] = sctx->tail.h[5];
+ PUTU32(blocks[i].c + 24, mctx->G[i]);
+ mctx->G[i] = sctx->tail.h[6];
+ PUTU32(blocks[i].c + 28, mctx->H[i]);
+ mctx->H[i] = sctx->tail.h[7];
+ blocks[i].c[32] = 0x80;
+ PUTU32(blocks[i].c + 60, (64 + 32) * 8);
+# endif /* BSWAP */
+ edges[i].ptr = blocks[i].c;
+ edges[i].blocks = 1;
+ }
+
+ /* finalize MACs */
+ sha256_multi_block(mctx, 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, mctx->A[i]);
+ PUTU32(out + 4, mctx->B[i]);
+ PUTU32(out + 8, mctx->C[i]);
+ PUTU32(out + 12, mctx->D[i]);
+ PUTU32(out + 16, mctx->E[i]);
+ PUTU32(out + 20, mctx->F[i]);
+ PUTU32(out + 24, mctx->G[i]);
+ PUTU32(out + 28, mctx->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 *)sctx->md.data)[8];
+ out0[1] = ((u8 *)sctx->md.data)[9];
+ out0[2] = ((u8 *)sctx->md.data)[10];
+ out0[3] = (u8)(len >> 8);
+ out0[4] = (u8)(len);
+
+ ret += len + 5;
+ inp += frag;
+ }
+
+ aesni_multi_cbc_encrypt(ciph_d, &ctx->ks, n4x);
+
+ OPENSSL_cleanse(blocks, sizeof(blocks));
+ OPENSSL_cleanse(mctx, sizeof(*mctx));
+
+ ctx->multiblock_encrypt_len = ret;
+ return ret;
+}
+# endif /* !OPENSSL_NO_MULTIBLOCK */
+
+static int aesni_cbc_hmac_sha256_cipher(PROV_CIPHER_CTX *vctx,
+ unsigned char *out,
+ const unsigned char *in, size_t len)
+{
+ PROV_AES_HMAC_SHA_CTX *ctx = (PROV_AES_HMAC_SHA_CTX *)vctx;
+ PROV_AES_HMAC_SHA256_CTX *sctx = (PROV_AES_HMAC_SHA256_CTX *)vctx;
+ unsigned int l;
+ size_t plen = ctx->payload_length;
+ size_t iv = 0; /* explicit IV in TLS 1.1 and * later */
+ size_t aes_off = 0, blocks;
+ size_t sha_off = SHA256_CBLOCK - sctx->md.num;
+
+ ctx->payload_length = NO_PAYLOAD_LENGTH;
+
+ if (len % AES_BLOCK_SIZE)
+ return 0;
+
+ if (ctx->base.enc) {
+ if (plen == NO_PAYLOAD_LENGTH)
+ plen = len;
+ else if (len !=
+ ((plen + SHA256_DIGEST_LENGTH +
+ AES_BLOCK_SIZE) & -AES_BLOCK_SIZE))
+ return 0;
+ else if (ctx->aux.tls_ver >= TLS1_1_VERSION)
+ iv = AES_BLOCK_SIZE;
+
+ /*
+ * Assembly stitch handles AVX-capable processors, but its
+ * performance is not optimal on AMD Jaguar, ~40% worse, for
+ * unknown reasons. Incidentally processor in question supports
+ * AVX, but not AMD-specific XOP extension, which can be used
+ * to identify it and avoid stitch invocation. So that after we
+ * establish that current CPU supports AVX, we even see if it's
+ * either even XOP-capable Bulldozer-based or GenuineIntel one.
+ * But SHAEXT-capable go ahead...
+ */
+ if (((OPENSSL_ia32cap_P[2] & (1 << 29)) || /* SHAEXT? */
+ ((OPENSSL_ia32cap_P[1] & (1 << (60 - 32))) && /* AVX? */
+ ((OPENSSL_ia32cap_P[1] & (1 << (43 - 32))) /* XOP? */
+ | (OPENSSL_ia32cap_P[0] & (1 << 30))))) && /* "Intel CPU"? */
+ plen > (sha_off + iv) &&
+ (blocks = (plen - (sha_off + iv)) / SHA256_CBLOCK)) {
+ sha256_update(&sctx->md, in + iv, sha_off);
+
+ (void)aesni_cbc_sha256_enc(in, out, blocks, &ctx->ks,
+ ctx->base.iv,
+ &sctx->md, in + iv + sha_off);
+ blocks *= SHA256_CBLOCK;
+ aes_off += blocks;
+ sha_off += blocks;
+ sctx->md.Nh += blocks >> 29;
+ sctx->md.Nl += blocks <<= 3;
+ if (sctx->md.Nl < (unsigned int)blocks)
+ sctx->md.Nh++;
+ } else {
+ sha_off = 0;
+ }
+ sha_off += iv;
+ sha256_update(&sctx->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, &sctx->md);
+ sctx->md = sctx->tail;
+ sha256_update(&sctx->md, out + plen, SHA256_DIGEST_LENGTH);
+ SHA256_Final(out + plen, &sctx->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,
+ &ctx->ks, ctx->base.iv, 1);
+ } else {
+ aesni_cbc_encrypt(in + aes_off, out + aes_off, len - aes_off,
+ &ctx->ks, ctx->base.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, &ctx->ks,
+ ctx->base.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 *)sctx->md.data;
+
+ if ((ctx->aux.tls_aad[plen - 4] << 8 | ctx->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;
+
+ 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 - (SHA256_DIGEST_LENGTH + pad + 1);
+
+ ctx->aux.tls_aad[plen - 2] = inp_len >> 8;
+ ctx->aux.tls_aad[plen - 1] = inp_len;
+
+ /* calculate HMAC */
+ sctx->md = sctx->head;
+ sha256_update(&sctx->md, ctx->aux.tls_aad, plen);
+
+ /* code with lucky-13 fix */
+ len -= SHA256_DIGEST_LENGTH; /* amend mac */
+ if (len >= (256 + SHA256_CBLOCK)) {
+ j = (len - (256 + SHA256_CBLOCK)) & (0 - SHA256_CBLOCK);
+ j += SHA256_CBLOCK - sctx->md.num;
+ sha256_update(&sctx->md, out, j);
+ out += j;
+ len -= j;
+ inp_len -= j;
+ }
+
+ /* but pretend as if we hashed padded payload */
+ bitlen = sctx->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 /* BSWAP */
+
+ 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 = sctx->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(&sctx->md, data, 1);
+ mask &= 0 - ((j - inp_len - 72) >> (sizeof(j) * 8 - 1));
+ pmac->u[0] |= sctx->md.h[0] & mask;
+ pmac->u[1] |= sctx->md.h[1] & mask;
+ pmac->u[2] |= sctx->md.h[2] & mask;
+ pmac->u[3] |= sctx->md.h[3] & mask;
+ pmac->u[4] |= sctx->md.h[4] & mask;
+ pmac->u[5] |= sctx->md.h[5] & mask;
+ pmac->u[6] |= sctx->md.h[6] & mask;
+ pmac->u[7] |= sctx->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(&sctx->md, data, 1);
+ mask &= 0 - ((j - inp_len - 73) >> (sizeof(j) * 8 - 1));
+ pmac->u[0] |= sctx->md.h[0] & mask;
+ pmac->u[1] |= sctx->md.h[1] & mask;
+ pmac->u[2] |= sctx->md.h[2] & mask;
+ pmac->u[3] |= sctx->md.h[3] & mask;
+ pmac->u[4] |= sctx->md.h[4] & mask;
+ pmac->u[5] |= sctx->md.h[5] & mask;
+ pmac->u[6] |= sctx->md.h[6] & mask;
+ pmac->u[7] |= sctx->md.h[7] & mask;
+
+ memset(data, 0, SHA256_CBLOCK);
+ j += 64;
+ }
+ data->u[SHA_LBLOCK - 1] = bitlen;
+ sha256_block_data_order(&sctx->md, data, 1);
+ mask = 0 - ((j - inp_len - 73) >> (sizeof(j) * 8 - 1));
+ pmac->u[0] |= sctx->md.h[0] & mask;
+ pmac->u[1] |= sctx->md.h[1] & mask;
+ pmac->u[2] |= sctx->md.h[2] & mask;
+ pmac->u[3] |= sctx->md.h[3] & mask;
+ pmac->u[4] |= sctx->md.h[4] & mask;
+ pmac->u[5] |= sctx->md.h[5] & mask;
+ pmac->u[6] |= sctx->md.h[6] & mask;
+ pmac->u[7] |= sctx->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 /* BSWAP */
+ len += SHA256_DIGEST_LENGTH;
+ sctx->md = sctx->tail;
+ sha256_update(&sctx->md, pmac->c, SHA256_DIGEST_LENGTH);
+ SHA256_Final(pmac->c, &sctx->md);
+
+ /* verify HMAC */
+ out += inp_len;
+ len -= inp_len;
+ /* code containing lucky-13 fix */
+ {
+ 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;
+ }
+ return ret;
+ } else {
+ sha256_update(&sctx->md, out, len);
+ }
+ }
+
+ return 1;
+}
+
+/* EVP_CTRL_AEAD_SET_MAC_KEY */
+static void aesni_cbc_hmac_sha256_set_mac_key(void *vctx,
+ const unsigned char *mackey,
+ size_t len)
+{
+ PROV_AES_HMAC_SHA256_CTX *ctx = (PROV_AES_HMAC_SHA256_CTX *)vctx;
+ unsigned int i;
+ unsigned char hmac_key[64];
+
+ memset(hmac_key, 0, sizeof(hmac_key));
+
+ if (len > sizeof(hmac_key)) {
+ SHA256_Init(&ctx->head);
+ sha256_update(&ctx->head, mackey, len);
+ SHA256_Final(hmac_key, &ctx->head);
+ } else {
+ memcpy(hmac_key, mackey, len);
+ }
+
+ for (i = 0; i < sizeof(hmac_key); i++)
+ hmac_key[i] ^= 0x36; /* ipad */
+ SHA256_Init(&ctx->head);
+ sha256_update(&ctx->head, hmac_key, sizeof(hmac_key));
+
+ for (i = 0; i < sizeof(hmac_key); i++)
+ hmac_key[i] ^= 0x36 ^ 0x5c; /* opad */
+ SHA256_Init(&ctx->tail);
+ sha256_update(&ctx->tail, hmac_key, sizeof(hmac_key));
+
+ OPENSSL_cleanse(hmac_key, sizeof(hmac_key));
+}
+
+/* EVP_CTRL_AEAD_TLS1_AAD */
+static int aesni_cbc_hmac_sha256_set_tls1_aad(void *vctx,
+ unsigned char *aad_rec, int aad_len)
+{
+ PROV_AES_HMAC_SHA_CTX *ctx = (PROV_AES_HMAC_SHA_CTX *)vctx;
+ PROV_AES_HMAC_SHA256_CTX *sctx = (PROV_AES_HMAC_SHA256_CTX *)vctx;
+ unsigned char *p = aad_rec;
+ unsigned int len;
+
+ if (aad_len != EVP_AEAD_TLS1_AAD_LEN)
+ return -1;
+
+ len = p[aad_len - 2] << 8 | p[aad_len - 1];
+
+ if (ctx->base.enc) {
+ ctx->payload_length = len;
+ if ((ctx->aux.tls_ver =
+ p[aad_len - 4] << 8 | p[aad_len - 3]) >= TLS1_1_VERSION) {
+ if (len < AES_BLOCK_SIZE)
+ return 0;
+ len -= AES_BLOCK_SIZE;
+ p[aad_len] = len >> 8;
+ p[aad_len - 1] = len;
+ }
+ sctx->md = sctx->head;
+ sha256_update(&sctx->md, p, aad_len);
+ ctx->tls_aad_pad = (int)(((len + SHA256_DIGEST_LENGTH +
+ AES_BLOCK_SIZE) & -AES_BLOCK_SIZE)
+ - len);
+ return 1;
+ } else {
+ memcpy(ctx->aux.tls_aad, p, aad_len);
+ ctx->payload_length = aad_len;
+ ctx->tls_aad_pad = SHA256_DIGEST_LENGTH;
+ return 1;
+ }
+}
+
+# if !defined(OPENSSL_NO_MULTIBLOCK)
+/* EVP_CTRL_TLS1_1_MULTIBLOCK_MAX_BUFSIZE */
+static int aesni_cbc_hmac_sha256_tls1_multiblock_max_bufsize(
+ void *vctx)
+{
+ PROV_AES_HMAC_SHA_CTX *ctx = (PROV_AES_HMAC_SHA_CTX *)vctx;
+
+ OPENSSL_assert(ctx->multiblock_max_send_fragment != 0);
+ return (int)(5 + 16
+ + (((int)ctx->multiblock_max_send_fragment + 32 + 16) & -16));
+}
+
+/* EVP_CTRL_TLS1_1_MULTIBLOCK_AAD */
+static int aesni_cbc_hmac_sha256_tls1_multiblock_aad(
+ void *vctx, EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param)
+{
+ PROV_AES_HMAC_SHA_CTX *ctx = (PROV_AES_HMAC_SHA_CTX *)vctx;
+ PROV_AES_HMAC_SHA256_CTX *sctx = (PROV_AES_HMAC_SHA256_CTX *)vctx;
+ unsigned int n4x = 1, x4;
+ unsigned int frag, last, packlen, inp_len;
+
+ inp_len = param->inp[11] << 8 | param->inp[12];
+
+ if (ctx->base.enc) {
+ 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;
+
+ sctx->md = sctx->head;
+ sha256_update(&sctx->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;
+ /* The returned values used by get need to be stored */
+ ctx->multiblock_interleave = x4;
+ ctx->multiblock_aad_packlen = packlen;
+ return 1;
+ }
+ return -1; /* not yet */
+}
+
+/* EVP_CTRL_TLS1_1_MULTIBLOCK_ENCRYPT */
+static int aesni_cbc_hmac_sha256_tls1_multiblock_encrypt(
+ void *ctx, EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM *param)
+{
+ return (int)tls1_multi_block_encrypt(ctx, param->out,
+ param->inp, param->len,
+ param->interleave / 4);
+}
+#endif
+
+static const PROV_CIPHER_HW_AES_HMAC_SHA cipher_hw_aes_hmac_sha256 = {
+ {
+ aesni_cbc_hmac_sha256_init_key,
+ aesni_cbc_hmac_sha256_cipher
+ },
+ aesni_cbc_hmac_sha256_set_mac_key,
+ aesni_cbc_hmac_sha256_set_tls1_aad,
+# if !defined(OPENSSL_NO_MULTIBLOCK)
+ aesni_cbc_hmac_sha256_tls1_multiblock_max_bufsize,
+ aesni_cbc_hmac_sha256_tls1_multiblock_aad,
+ aesni_cbc_hmac_sha256_tls1_multiblock_encrypt
+# endif
+};
+
+const PROV_CIPHER_HW_AES_HMAC_SHA *PROV_CIPHER_HW_aes_cbc_hmac_sha256(void)
+{
+ return &cipher_hw_aes_hmac_sha256;
+}
+
+#endif /* AES_CBC_HMAC_SHA_CAPABLE */
projects / openssl.git / blobdiff