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, blake2s_compress); 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, blake2s_compress); 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