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110b4e9094
The concrete need on this change is to support passing an initial seed to the murmur hash. Passing a custom seed is important in terms of randomizing the hash function. The suggested implementation adds a HashTable parameter to all the init callbacks. Further on, an array with custom arguments is accepted from `hash` or `hash_init` from the user land. Currently several things like `hash_hkdf` are not touched, as they don't need passing custom args. Some convenience macros have been added to the SHA/MD families of functions, so the consuming code doesn't have to be changed widely. Another way to implement this is to add another type of the init that would accept a HT with arguments. However, that would still require touching all the context structs in all the algos. That would also increase the size of those structs. As an init function is called just once, the way of modifying the existing init callback has been seen as more preferrable. Closes GH-6400. Signed-off-by: Anatol Belski <ab@php.net> Co-Developed-by: Nikita Popov <nikita.ppv@googlemail.com> Signed-off-by: Nikita Popov <nikita.ppv@googlemail.com> Acked-by: Michael Wallner <mike@php.net> Reviewed-by: Máté Kocsis <kocsismate@woohoolabs.com> Reviewed-by: Eddie Kohler <ekohler@gmail.com>
68 lines
2.8 KiB
C
68 lines
2.8 KiB
C
/*
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+----------------------------------------------------------------------+
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| Copyright (c) The PHP Group |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Author: Michael Maclean <mgdm@php.net> |
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+----------------------------------------------------------------------+
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*/
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#ifndef PHP_HASH_FNV_H
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#define PHP_HASH_FNV_H
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#define PHP_FNV1_32_INIT ((uint32_t)0x811c9dc5)
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#define PHP_FNV1_32A_INIT PHP_FNV1_32_INIT
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#define PHP_FNV_32_PRIME ((uint32_t)0x01000193)
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#define PHP_FNV1_64_INIT ((uint64_t)0xcbf29ce484222325ULL)
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#define PHP_FNV1A_64_INIT FNV1_64_INIT
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#define PHP_FNV_64_PRIME ((uint64_t)0x100000001b3ULL)
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/*
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* hash types
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*/
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enum php_fnv_type {
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PHP_FNV_NONE = 0, /* invalid FNV hash type */
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PHP_FNV0_32 = 1, /* FNV-0 32 bit hash */
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PHP_FNV1_32 = 2, /* FNV-1 32 bit hash */
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PHP_FNV1a_32 = 3, /* FNV-1a 32 bit hash */
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PHP_FNV0_64 = 4, /* FNV-0 64 bit hash */
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PHP_FNV1_64 = 5, /* FNV-1 64 bit hash */
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PHP_FNV1a_64 = 6, /* FNV-1a 64 bit hash */
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};
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typedef struct {
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uint32_t state;
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} PHP_FNV132_CTX;
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#define PHP_FNV132_SPEC "l."
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typedef struct {
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uint64_t state;
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} PHP_FNV164_CTX;
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#define PHP_FNV164_SPEC "q."
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PHP_HASH_API void PHP_FNV132Init(PHP_FNV132_CTX *context, ZEND_ATTRIBUTE_UNUSED HashTable *args);
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PHP_HASH_API void PHP_FNV132Update(PHP_FNV132_CTX *context, const unsigned char *input, size_t inputLen);
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PHP_HASH_API void PHP_FNV1a32Update(PHP_FNV132_CTX *context, const unsigned char *input, size_t inputLen);
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PHP_HASH_API void PHP_FNV132Final(unsigned char digest[16], PHP_FNV132_CTX * context);
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PHP_HASH_API void PHP_FNV164Init(PHP_FNV164_CTX *context, ZEND_ATTRIBUTE_UNUSED HashTable *args);
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PHP_HASH_API void PHP_FNV164Update(PHP_FNV164_CTX *context, const unsigned char *input, size_t inputLen);
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PHP_HASH_API void PHP_FNV1a64Update(PHP_FNV164_CTX *context, const unsigned char *input, size_t inputLen);
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PHP_HASH_API void PHP_FNV164Final(unsigned char digest[16], PHP_FNV164_CTX * context);
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static uint32_t fnv_32_buf(void *buf, size_t len, uint32_t hval, int alternate);
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static uint64_t fnv_64_buf(void *buf, size_t len, uint64_t hval, int alternate);
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#endif
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