crypto/poly1305/poly1305_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 <openssl/opensslconf.h>
  11 #include <openssl/types.h>
  12 #include "crypto/poly1305.h"
  13 #include "crypto/ppc_arch.h"
  14
  15 void poly1305_init_int(void *ctx, const unsigned char key[16]);
  16 void poly1305_blocks(void *ctx, const unsigned char *inp, size_t len,
  17                          unsigned int padbit);
  18 void poly1305_emit(void *ctx, unsigned char mac[16],
  19                        const unsigned int nonce[4]);
  20 void poly1305_init_fpu(void *ctx, const unsigned char key[16]);
  21 void poly1305_blocks_fpu(void *ctx, const unsigned char *inp, size_t len,
  22                          unsigned int padbit);
  23 void poly1305_emit_fpu(void *ctx, unsigned char mac[16],
  24                        const unsigned int nonce[4]);
  25 void poly1305_init_vsx(void *ctx, const unsigned char key[16]);
  26 void poly1305_blocks_vsx(void *ctx, const unsigned char *inp, size_t len,
  27                          unsigned int padbit);
  28 void poly1305_emit_vsx(void *ctx, unsigned char mac[16],
  29                        const unsigned int nonce[4]);
  30 int poly1305_init(void *ctx, const unsigned char key[16], void *func[2]);
  31 int poly1305_init(void *ctx, const unsigned char key[16], void *func[2])
  32 {
  33     if (OPENSSL_ppccap_P & PPC_CRYPTO207) {
  34         poly1305_init_int(ctx, key);
  35         func[0] = (void*)(uintptr_t)poly1305_blocks_vsx;
  36         func[1] = (void*)(uintptr_t)poly1305_emit;
  37     } else if (sizeof(size_t) == 4 && (OPENSSL_ppccap_P & PPC_FPU)) {
  38         poly1305_init_fpu(ctx, key);
  39         func[0] = (void*)(uintptr_t)poly1305_blocks_fpu;
  40         func[1] = (void*)(uintptr_t)poly1305_emit_fpu;
  41     } else {
  42         poly1305_init_int(ctx, key);
  43         func[0] = (void*)(uintptr_t)poly1305_blocks;
  44         func[1] = (void*)(uintptr_t)poly1305_emit;
  45     }
  46     return 1;
  47 }