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ada776c84c
* 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
81 lines
3.2 KiB
C
81 lines
3.2 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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| SHA1 Author: Stefan Esser <sesser@php.net> |
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| SHA256 Author: Sara Golemon <pollita@php.net> |
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+----------------------------------------------------------------------+
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*/
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#ifndef PHP_HASH_SHA_H
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#define PHP_HASH_SHA_H
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#include "ext/standard/sha1.h"
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#include "ext/standard/basic_functions.h"
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/* SHA224 context. */
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typedef struct {
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uint32_t state[8]; /* state */
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uint32_t count[2]; /* number of bits, modulo 2^64 */
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unsigned char buffer[64]; /* input buffer */
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} PHP_SHA224_CTX;
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#define PHP_SHA224_SPEC "l8l2b64."
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PHP_HASH_API void PHP_SHA224Init(PHP_SHA224_CTX *);
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PHP_HASH_API void PHP_SHA224Update(PHP_SHA224_CTX *, const unsigned char *, size_t);
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PHP_HASH_API void PHP_SHA224Final(unsigned char[28], PHP_SHA224_CTX *);
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/* SHA256 context. */
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typedef struct {
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uint32_t state[8]; /* state */
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uint32_t count[2]; /* number of bits, modulo 2^64 */
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unsigned char buffer[64]; /* input buffer */
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} PHP_SHA256_CTX;
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#define PHP_SHA256_SPEC "l8l2b64."
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PHP_HASH_API void PHP_SHA256Init(PHP_SHA256_CTX *);
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PHP_HASH_API void PHP_SHA256Update(PHP_SHA256_CTX *, const unsigned char *, size_t);
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PHP_HASH_API void PHP_SHA256Final(unsigned char[32], PHP_SHA256_CTX *);
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/* SHA384 context */
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typedef struct {
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uint64_t state[8]; /* state */
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uint64_t count[2]; /* number of bits, modulo 2^128 */
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unsigned char buffer[128]; /* input buffer */
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} PHP_SHA384_CTX;
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#define PHP_SHA384_SPEC "q8q2b128."
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PHP_HASH_API void PHP_SHA384Init(PHP_SHA384_CTX *);
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PHP_HASH_API void PHP_SHA384Update(PHP_SHA384_CTX *, const unsigned char *, size_t);
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PHP_HASH_API void PHP_SHA384Final(unsigned char[48], PHP_SHA384_CTX *);
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/* SHA512 context */
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typedef struct {
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uint64_t state[8]; /* state */
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uint64_t count[2]; /* number of bits, modulo 2^128 */
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unsigned char buffer[128]; /* input buffer */
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} PHP_SHA512_CTX;
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#define PHP_SHA512_SPEC "q8q2b128."
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PHP_HASH_API void PHP_SHA512Init(PHP_SHA512_CTX *);
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PHP_HASH_API void PHP_SHA512Update(PHP_SHA512_CTX *, const unsigned char *, size_t);
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PHP_HASH_API void PHP_SHA512Final(unsigned char[64], PHP_SHA512_CTX *);
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PHP_HASH_API void PHP_SHA512_256Init(PHP_SHA512_CTX *);
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#define PHP_SHA512_256Update PHP_SHA512Update
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PHP_HASH_API void PHP_SHA512_256Final(unsigned char[32], PHP_SHA512_CTX *);
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PHP_HASH_API void PHP_SHA512_224Init(PHP_SHA512_CTX *);
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#define PHP_SHA512_224Update PHP_SHA512Update
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PHP_HASH_API void PHP_SHA512_224Final(unsigned char[28], PHP_SHA512_CTX *);
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#endif /* PHP_HASH_SHA_H */
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