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php-src/ext/hash/php_hash_snefru.h

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Added hash extension to PHP 5.1
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/*
+----------------------------------------------------------------------+
Remove yearly range from copyright notice
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| Copyright (c) The PHP Group |
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+----------------------------------------------------------------------+
bump year and license version
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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 |
| available through the world-wide-web at the following url: |
Update http->https in license (#6945) 1. Update: http://www.php.net/license/3_01.txt to https, as there is anyway server header "Location:" to https. 2. Update few license 3.0 to 3.01 as 3.0 states "php 5.1.1, 4.1.1, and earlier". 3. In some license comments is "at through the world-wide-web" while most is without "at", so deleted. 4. fixed indentation in some files before |
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| https://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 |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Michael Wallner <mike@php.net> |
+----------------------------------------------------------------------+
*/
#ifndef PHP_HASH_SNEFRU_H
#define PHP_HASH_SNEFRU_H
/* SNEFRU-2.5a with 8 passes and 256 bit hash output
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* AKA "Xerox Secure Hash Function"
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*/
/* SNEFRU context */
typedef struct {
Replace usage of php_hash_uint32 and php_hash_uint64 with uint32_t and uint64_t. Remove the unused php_hash_int32 and php_hash_int64.
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uint32_t state[16];
uint32_t count[2];
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unsigned char length;
unsigned char buffer[32];
} PHP_SNEFRU_CTX;
Make HashContexts serializable. * Modify php_hash_ops to contain the algorithm name and serialize and unserialize methods. * Implement __serialize and __unserialize magic methods on HashContext. Note that serialized HashContexts are not necessarily portable between PHP versions or from architecture to architecture. (Most are, though Keccak and slow SHA3s are not.) An exception is thrown when an unsupported serialization is attempted. Because of security concerns, HASH_HMAC contexts are not currently serializable; attempting to serialize one throws an exception. Serialization exposes the state of HashContext memory, so ensure that memory is zeroed before use by allocating it with a new php_hash_alloc_context function. Performance impact is negligible. Some hash internal states have logical pointers into a buffer, or sponge, that absorbs input provided in bytes rather than chunks. The unserialize functions for these hash functions must validate that the logical pointers are all within bounds, lest future hash operations cause out-of-bounds memory accesses. * Adler32, CRC32, FNV, joaat: simple state, no buffer positions * Gost, MD2, SHA3, Snefru, Tiger, Whirlpool: buffer positions must be validated * MD4, MD5, SHA1, SHA2, haval, ripemd: buffer positions encoded bitwise, forced to within bounds on use; no need to validate
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#define PHP_SNEFRU_SPEC "l16l2bb32"
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hash: Support custom algo parameters 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>
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PHP_HASH_API void PHP_SNEFRUInit(PHP_SNEFRU_CTX *, ZEND_ATTRIBUTE_UNUSED HashTable *);
MFH: add declarations more uint -> size_t fixes
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PHP_HASH_API void PHP_SNEFRUUpdate(PHP_SNEFRU_CTX *, const unsigned char *, size_t);
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PHP_HASH_API void PHP_SNEFRUFinal(unsigned char[32], PHP_SNEFRU_CTX *);
#endif
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