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      1 /*
      2  * Copyright 2025 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 
     11 #include "internal/hashfunc.h"
     12 
     13 ossl_unused uint64_t ossl_fnv1a_hash(uint8_t *key, size_t len)
     14 {
     15     uint64_t hash = 0xcbf29ce484222325ULL;
     16     size_t i;
     17 
     18     for (i = 0; i < len; i++) {
     19         hash ^= key[i];
     20         hash *= 0x00000100000001B3ULL;
     21     }
     22     return hash;
     23 }
     24