crypto/chacha/chacha_ppc.c

   1 /*
   2  * Copyright 2009-2021 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 #include <stdlib.h>
  11 #include <string.h>
  12
  13 #include <openssl/opensslconf.h>
  14 #include "crypto/chacha.h"
  15 #include "crypto/ppc_arch.h"
  16
  17 void ChaCha20_ctr32_int(unsigned char *out, const unsigned char *inp,
  18                         size_t len, const unsigned int key[8],
  19                         const unsigned int counter[4]);
  20 void ChaCha20_ctr32_vmx(unsigned char *out, const unsigned char *inp,
  21                         size_t len, const unsigned int key[8],
  22                         const unsigned int counter[4]);
  23 void ChaCha20_ctr32_vsx(unsigned char *out, const unsigned char *inp,
  24                         size_t len, const unsigned int key[8],
  25                         const unsigned int counter[4]);
  26 void ChaCha20_ctr32(unsigned char *out, const unsigned char *inp,
  27                     size_t len, const unsigned int key[8],
  28                     const unsigned int counter[4])
  29 {
  30     OPENSSL_ppccap_P & PPC_CRYPTO207
  31         ? ChaCha20_ctr32_vsx(out, inp, len, key, counter)
  32         : OPENSSL_ppccap_P & PPC_ALTIVEC
  33             ? ChaCha20_ctr32_vmx(out, inp, len, key, counter)
  34             : ChaCha20_ctr32_int(out, inp, len, key, counter);
  35 }