xref: /openbmc/linux/lib/crypto/blake2s.c (revision 72113d0a)
1 // SPDX-License-Identifier: GPL-2.0 OR MIT
2 /*
3  * Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
4  *
5  * This is an implementation of the BLAKE2s hash and PRF functions.
6  *
7  * Information: https://blake2.net/
8  *
9  */
10 
11 #include <crypto/internal/blake2s.h>
12 #include <linux/types.h>
13 #include <linux/string.h>
14 #include <linux/kernel.h>
15 #include <linux/module.h>
16 #include <linux/init.h>
17 #include <linux/bug.h>
18 
19 void blake2s_update(struct blake2s_state *state, const u8 *in, size_t inlen)
20 {
21 	__blake2s_update(state, in, inlen, false);
22 }
23 EXPORT_SYMBOL(blake2s_update);
24 
25 void blake2s_final(struct blake2s_state *state, u8 *out)
26 {
27 	WARN_ON(IS_ENABLED(DEBUG) && !out);
28 	__blake2s_final(state, out, false);
29 	memzero_explicit(state, sizeof(*state));
30 }
31 EXPORT_SYMBOL(blake2s_final);
32 
33 static int __init blake2s_mod_init(void)
34 {
35 	if (!IS_ENABLED(CONFIG_CRYPTO_MANAGER_DISABLE_TESTS) &&
36 	    WARN_ON(!blake2s_selftest()))
37 		return -ENODEV;
38 	return 0;
39 }
40 
41 static void __exit blake2s_mod_exit(void)
42 {
43 }
44 
45 module_init(blake2s_mod_init);
46 module_exit(blake2s_mod_exit);
47 MODULE_LICENSE("GPL v2");
48 MODULE_DESCRIPTION("BLAKE2s hash function");
49 MODULE_AUTHOR("Jason A. Donenfeld <Jason@zx2c4.com>");
50