xref: /freebsd/crypto/openssl/crypto/hashtable/hashfunc.c (revision e7be843b4a162e68651d3911f0357ed464915629) 
1*e7be843bSPierre Pronchery /*
2*e7be843bSPierre Pronchery  * Copyright 2025 The OpenSSL Project Authors. All Rights Reserved.
3*e7be843bSPierre Pronchery  *
4*e7be843bSPierre Pronchery  * Licensed under the Apache License 2.0 (the "License").  You may not use
5*e7be843bSPierre Pronchery  * this file except in compliance with the License.  You can obtain a copy
6*e7be843bSPierre Pronchery  * in the file LICENSE in the source distribution or at
7*e7be843bSPierre Pronchery  * https://www.openssl.org/source/license.html
8*e7be843bSPierre Pronchery  *
9*e7be843bSPierre Pronchery  */
10*e7be843bSPierre Pronchery 
11*e7be843bSPierre Pronchery #include "internal/hashfunc.h"
12*e7be843bSPierre Pronchery 
ossl_fnv1a_hash(uint8_t * key,size_t len)13*e7be843bSPierre Pronchery ossl_unused uint64_t ossl_fnv1a_hash(uint8_t *key, size_t len)
14*e7be843bSPierre Pronchery {
15*e7be843bSPierre Pronchery     uint64_t hash = 0xcbf29ce484222325ULL;
16*e7be843bSPierre Pronchery     size_t i;
17*e7be843bSPierre Pronchery 
18*e7be843bSPierre Pronchery     for (i = 0; i < len; i++) {
19*e7be843bSPierre Pronchery         hash ^= key[i];
20*e7be843bSPierre Pronchery         hash *= 0x00000100000001B3ULL;
21*e7be843bSPierre Pronchery     }
22*e7be843bSPierre Pronchery     return hash;
23*e7be843bSPierre Pronchery }
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