1 /*
2 * Copyright 2009-2023 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_vsx_p10(unsigned char *out, const unsigned char *inp,
27 size_t len, const unsigned int key[8],
28 const unsigned int counter[4]);
ChaCha20_ctr32(unsigned char * out,const unsigned char * inp,size_t len,const unsigned int key[8],const unsigned int counter[4])29 void ChaCha20_ctr32(unsigned char *out, const unsigned char *inp,
30 size_t len, const unsigned int key[8],
31 const unsigned int counter[4])
32 {
33 #if !defined(OPENSSL_SYS_AIX) && !defined(OPENSSL_SYS_MACOSX)
34 OPENSSL_ppccap_P & PPC_BRD31
35 ? ChaCha20_ctr32_vsx_p10(out, inp, len, key, counter) :
36 #endif
37 OPENSSL_ppccap_P & PPC_CRYPTO207
38 ? ChaCha20_ctr32_vsx(out, inp, len, key, counter)
39 : OPENSSL_ppccap_P & PPC_ALTIVEC
40 ? ChaCha20_ctr32_vmx(out, inp, len, key, counter)
41 : ChaCha20_ctr32_int(out, inp, len, key, counter);
42 }
43