eko54r
b5e3a778ce
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62 lines
1.9 KiB
PHP
62 lines
1.9 KiB
PHP
<?php
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namespace Safe;
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use Safe\Exceptions\HashException;
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/**
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*
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*
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* @param string $algo Name of selected hashing algorithm (e.g. "sha256").
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* For a list of supported algorithms see hash_hmac_algos.
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*
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*
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* Non-cryptographic hash functions are not allowed.
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*
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*
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*
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* Non-cryptographic hash functions are not allowed.
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* @param string $key Input keying material (raw binary). Cannot be empty.
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* @param int $length Desired output length in bytes.
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* Cannot be greater than 255 times the chosen hash function size.
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*
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* If length is 0, the output length
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* will default to the chosen hash function size.
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* @param string $info Application/context-specific info string.
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* @param string $salt Salt to use during derivation.
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*
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* While optional, adding random salt significantly improves the strength of HKDF.
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* @return false|non-falsy-string Returns a string containing a raw binary representation of the derived key
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* (also known as output keying material - OKM).
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*
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*/
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function hash_hkdf(string $algo, string $key, int $length = 0, string $info = "", string $salt = "")
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{
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error_clear_last();
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$safeResult = \hash_hkdf($algo, $key, $length, $info, $salt);
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return $safeResult;
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}
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/**
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*
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*
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* @param \HashContext $context Hashing context returned by hash_init.
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* @param string $filename URL describing location of file to be hashed; Supports fopen wrappers.
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* @param \HashContext|null $stream_context Stream context as returned by stream_context_create.
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* @throws HashException
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*
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*/
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function hash_update_file(\HashContext $context, string $filename, ?\HashContext $stream_context = null): void
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{
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error_clear_last();
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if ($stream_context !== null) {
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$safeResult = \hash_update_file($context, $filename, $stream_context);
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} else {
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$safeResult = \hash_update_file($context, $filename);
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}
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if ($safeResult === false) {
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throw HashException::createFromPhpError();
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}
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}
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