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]);
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 }
48