crypto/poly1305/poly1305_ppccap.c

   1 /*
   2  * Copyright 2009-2016 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the OpenSSL license (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 <openssl/opensslconf.h>
  12 #include "../ppc_arch.h"
  13
  14 #ifdef OPENSSL_NO_POLY1305
  15 NON_EMPTY_TRANSLATION_UNIT
  16 #else
  17 void poly1305_init_int(void *ctx, const unsigned char key[16]);
  18 void poly1305_blocks(void *ctx, const unsigned char *inp, size_t len,
  19                          unsigned int padbit);
  20 void poly1305_emit(void *ctx, unsigned char mac[16],
  21                        const unsigned int nonce[4]);
  22 void poly1305_init_fpu(void *ctx, const unsigned char key[16]);
  23 void poly1305_blocks_fpu(void *ctx, const unsigned char *inp, size_t len,
  24                          unsigned int padbit);
  25 void poly1305_emit_fpu(void *ctx, unsigned char mac[16],
  26                        const unsigned int nonce[4]);
  27 int poly1305_init(void *ctx, const unsigned char key[16], void *func[2])
  28 {
  29     if (sizeof(size_t) == 4 && (OPENSSL_ppccap_P & PPC_FPU)) {
  30         poly1305_init_fpu(ctx, key);
  31         func[0] = poly1305_blocks_fpu;
  32         func[1] = poly1305_emit_fpu;
  33     } else {
  34         poly1305_init_int(ctx, key);
  35         func[0] = poly1305_blocks;
  36         func[1] = poly1305_emit;
  37     }
  38     return 1;
  39 }
  40 #endif
  41