crypto/fipsmodule/aes/mode_wrappers.c

/* ====================================================================
 * Copyright (c) 2002-2006 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
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 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
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 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
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 *    distribution.
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 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
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 *    openssl-core@openssl.org.
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 * 5. Products derived from this software may not be called "OpenSSL"
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 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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 * ==================================================================== */

#include <openssl/aes.h>

#include <assert.h>

#include "../modes/internal.h"


void AES_ctr128_encrypt(const uint8_t *in, uint8_t *out, size_t len,
                        const AES_KEY *key, uint8_t ivec[AES_BLOCK_SIZE],
                        uint8_t ecount_buf[AES_BLOCK_SIZE], unsigned int *num) {
  CRYPTO_ctr128_encrypt(in, out, len, key, ivec, ecount_buf, num,
                        (block128_f)AES_encrypt);
}

void AES_ecb_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key,
                     const int enc) {
  assert(in && out && key);
  assert((AES_ENCRYPT == enc) || (AES_DECRYPT == enc));

  if (AES_ENCRYPT == enc) {
    AES_encrypt(in, out, key);
  } else {
    AES_decrypt(in, out, key);
  }
}

#if defined(OPENSSL_NO_ASM) || \
    (!defined(OPENSSL_X86_64) && !defined(OPENSSL_X86))
void AES_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t len,
                     const AES_KEY *key, uint8_t *ivec, const int enc) {

  if (enc) {
    CRYPTO_cbc128_encrypt(in, out, len, key, ivec, (block128_f)AES_encrypt);
  } else {
    CRYPTO_cbc128_decrypt(in, out, len, key, ivec, (block128_f)AES_decrypt);
  }
}
#else

void asm_AES_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t len,
                         const AES_KEY *key, uint8_t *ivec, const int enc);
void AES_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t len,
                     const AES_KEY *key, uint8_t *ivec, const int enc) {
  asm_AES_cbc_encrypt(in, out, len, key, ivec, enc);
}

#endif  // OPENSSL_NO_ASM || (!OPENSSL_X86_64 && !OPENSSL_X86)

void AES_ofb128_encrypt(const uint8_t *in, uint8_t *out, size_t length,
                        const AES_KEY *key, uint8_t *ivec, int *num) {
  unsigned num_u = (unsigned)(*num);
  CRYPTO_ofb128_encrypt(in, out, length, key, ivec, &num_u,
                        (block128_f)AES_encrypt);
  *num = (int)num_u;
}

void AES_cfb128_encrypt(const uint8_t *in, uint8_t *out, size_t length,
                        const AES_KEY *key, uint8_t *ivec, int *num,
                        int enc) {
  unsigned num_u = (unsigned)(*num);
  CRYPTO_cfb128_encrypt(in, out, length, key, ivec, &num_u, enc,
                        (block128_f)AES_encrypt);
  *num = (int)num_u;
}