1/* 2 * Copyright 2001-2021 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the Apache License 2.0 (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10/*- 11 * AES-NI support for AES modes ecb, cbc, ofb, cfb, ctr. 12 * This file is included by cipher_aes_hw.c 13 */ 14 15#define cipher_hw_aesni_ofb128 ossl_cipher_hw_generic_ofb128 16#define cipher_hw_aesni_cfb128 ossl_cipher_hw_generic_cfb128 17#define cipher_hw_aesni_cfb8 ossl_cipher_hw_generic_cfb8 18#define cipher_hw_aesni_cfb1 ossl_cipher_hw_generic_cfb1 19#define cipher_hw_aesni_ctr ossl_cipher_hw_generic_ctr 20 21static int cipher_hw_aesni_initkey(PROV_CIPHER_CTX *dat, 22 const unsigned char *key, size_t keylen) 23{ 24 int ret; 25 PROV_AES_CTX *adat = (PROV_AES_CTX *)dat; 26 AES_KEY *ks = &adat->ks.ks; 27 28 dat->ks = ks; 29 30 if ((dat->mode == EVP_CIPH_ECB_MODE || dat->mode == EVP_CIPH_CBC_MODE) 31 && !dat->enc) { 32 ret = aesni_set_decrypt_key(key, keylen * 8, ks); 33 dat->block = (block128_f) aesni_decrypt; 34 dat->stream.cbc = dat->mode == EVP_CIPH_CBC_MODE ? 35 (cbc128_f) aesni_cbc_encrypt : NULL; 36 } else { 37 ret = aesni_set_encrypt_key(key, keylen * 8, ks); 38 dat->block = (block128_f) aesni_encrypt; 39 if (dat->mode == EVP_CIPH_CBC_MODE) 40 dat->stream.cbc = (cbc128_f) aesni_cbc_encrypt; 41 else if (dat->mode == EVP_CIPH_CTR_MODE) 42 dat->stream.ctr = (ctr128_f) aesni_ctr32_encrypt_blocks; 43 else 44 dat->stream.cbc = NULL; 45 } 46 47 if (ret < 0) { 48 ERR_raise(ERR_LIB_PROV, PROV_R_KEY_SETUP_FAILED); 49 return 0; 50 } 51 52 return 1; 53} 54 55static int cipher_hw_aesni_cbc(PROV_CIPHER_CTX *ctx, unsigned char *out, 56 const unsigned char *in, size_t len) 57{ 58 const AES_KEY *ks = ctx->ks; 59 60 aesni_cbc_encrypt(in, out, len, ks, ctx->iv, ctx->enc); 61 62 return 1; 63} 64 65static int cipher_hw_aesni_ecb(PROV_CIPHER_CTX *ctx, unsigned char *out, 66 const unsigned char *in, size_t len) 67{ 68 if (len < ctx->blocksize) 69 return 1; 70 71 aesni_ecb_encrypt(in, out, len, ctx->ks, ctx->enc); 72 73 return 1; 74} 75 76#define PROV_CIPHER_HW_declare(mode) \ 77static const PROV_CIPHER_HW aesni_##mode = { \ 78 cipher_hw_aesni_initkey, \ 79 cipher_hw_aesni_##mode, \ 80 cipher_hw_aes_copyctx \ 81}; 82#define PROV_CIPHER_HW_select(mode) \ 83if (AESNI_CAPABLE) \ 84 return &aesni_##mode; 85