Coverage Report

Created: 2024-11-21 06:47

/src/boringssl/crypto/fipsmodule/aes/aes.c.inc
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/* ====================================================================
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 * Copyright (c) 2002-2006 The OpenSSL Project.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 *
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in
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 *    the documentation and/or other materials provided with the
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 *    distribution.
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 *
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 * 3. All advertising materials mentioning features or use of this
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 *    software must display the following acknowledgment:
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 *    "This product includes software developed by the OpenSSL Project
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 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
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 *
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 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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 *    endorse or promote products derived from this software without
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 *    prior written permission. For written permission, please contact
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 *    openssl-core@openssl.org.
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 *
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 * 5. Products derived from this software may not be called "OpenSSL"
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 *    nor may "OpenSSL" appear in their names without prior written
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 *    permission of the OpenSSL Project.
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 *
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 * 6. Redistributions of any form whatsoever must retain the following
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 *    acknowledgment:
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 *    "This product includes software developed by the OpenSSL Project
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 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
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 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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 * OF THE POSSIBILITY OF SUCH DAMAGE.
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 * ==================================================================== */
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#include <openssl/aes.h>
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#include <assert.h>
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#include "internal.h"
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#include "../modes/internal.h"
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// Be aware that different sets of AES functions use incompatible key
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// representations, varying in format of the key schedule, the |AES_KEY.rounds|
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// value, or both. Therefore they cannot mix. Also, on AArch64, the plain-C
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// code, above, is incompatible with the |aes_hw_*| functions.
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void AES_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key) {
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  if (hwaes_capable()) {
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    aes_hw_encrypt(in, out, key);
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  } else if (vpaes_capable()) {
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    vpaes_encrypt(in, out, key);
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  } else {
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    aes_nohw_encrypt(in, out, key);
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  }
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}
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void AES_decrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key) {
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  if (hwaes_capable()) {
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    aes_hw_decrypt(in, out, key);
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  } else if (vpaes_capable()) {
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    vpaes_decrypt(in, out, key);
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  } else {
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    aes_nohw_decrypt(in, out, key);
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  }
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}
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int AES_set_encrypt_key(const uint8_t *key, unsigned bits, AES_KEY *aeskey) {
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  if (bits != 128 && bits != 192 && bits != 256) {
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    return -2;
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  }
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  if (hwaes_capable()) {
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    return aes_hw_set_encrypt_key(key, bits, aeskey);
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  } else if (vpaes_capable()) {
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    return vpaes_set_encrypt_key(key, bits, aeskey);
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  } else {
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    return aes_nohw_set_encrypt_key(key, bits, aeskey);
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  }
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}
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int AES_set_decrypt_key(const uint8_t *key, unsigned bits, AES_KEY *aeskey) {
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  if (bits != 128 && bits != 192 && bits != 256) {
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    return -2;
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  }
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  if (hwaes_capable()) {
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    return aes_hw_set_decrypt_key(key, bits, aeskey);
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  } else if (vpaes_capable()) {
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    return vpaes_set_decrypt_key(key, bits, aeskey);
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  } else {
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    return aes_nohw_set_decrypt_key(key, bits, aeskey);
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  }
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}
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#if defined(HWAES) && (defined(OPENSSL_X86) || defined(OPENSSL_X86_64))
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// On x86 and x86_64, |aes_hw_set_decrypt_key|, we implement
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// |aes_hw_encrypt_key_to_decrypt_key| in assembly and rely on C code to combine
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// the operations.
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int aes_hw_set_decrypt_key(const uint8_t *user_key, int bits, AES_KEY *key) {
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  int ret = aes_hw_set_encrypt_key(user_key, bits, key);
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  if (ret == 0) {
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    aes_hw_encrypt_key_to_decrypt_key(key);
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  }
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  return ret;
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}
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39.7k
int aes_hw_set_encrypt_key(const uint8_t *user_key, int bits, AES_KEY *key) {
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39.7k
  if (aes_hw_set_encrypt_key_alt_preferred()) {
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39.7k
    return aes_hw_set_encrypt_key_alt(user_key, bits, key);
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39.7k
  } else {
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    return aes_hw_set_encrypt_key_base(user_key, bits, key);
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  }
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39.7k
}
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#endif