openssl_digest

(PHP 5 >= 5.3.0)

openssl_digestComputes a digest

Descrição

string openssl_digest ( string $data , string $method [, bool $raw_output = false ] )

Computes a digest hash value for the given data using a given method, and returns a raw or binhex encoded string.

Aviso

Esta função não está documentada; somente a lista de argumentos está disponível.

Parâmetros

data

The data.

method

The digest method.

raw_output

Setting to TRUE will return as raw output data, otherwise the return value is binhex encoded.

Valor Retornado

Returns the digested hash value on success ou FALSE em caso de falha.

Erros

Emits an E_WARNING level error if an unknown signature algorithm is passed via the method parameter.

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User Contributed Notes 2 notes

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0
mwgamera at gmail dot com
8 months ago
The second argument should be one of the values returned by openssl_get_md_methods() rather than hash_algos(). ‘Hash’ and ‘OpenSSL’ are independent extensions and support different selection of digest algorithms. Notably, Hash supports some non-cryptographic hashes like adler or crc.
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skyblackhawk at yahoo dot it
2 years ago
Example:
// $fileBuffer is buffer of file in open mode or a generic stream...
$fingerPrint = openssl_digest ($fileBuffer , "sha512");

$method parameter is one of hash_algos() array;

<? echo"<PRE>";
     
var_dump(hash_algos());
      echo
"</PRE>"
?>

Output:

array(42) {
  [0]=>
  string(3) "md2"
  [1]=>
  string(3) "md4"
  [2]=>
  string(3) "md5"
  [3]=>
  string(4) "sha1"
  [4]=>
  string(6) "sha224"
  [5]=>
  string(6) "sha256"
  [6]=>
  string(6) "sha384"
  [7]=>
  string(6) "sha512"
  [8]=>
  string(9) "ripemd128"
  [9]=>
  string(9) "ripemd160"
  [10]=>
  string(9) "ripemd256"
  [11]=>
  string(9) "ripemd320"
  [12]=>
  string(9) "whirlpool"
  [13]=>
  string(10) "tiger128,3"
  [14]=>
  string(10) "tiger160,3"
  [15]=>
  string(10) "tiger192,3"
  [16]=>
  string(10) "tiger128,4"
  [17]=>
  string(10) "tiger160,4"
  [18]=>
  string(10) "tiger192,4"
  [19]=>
  string(6) "snefru"
  [20]=>
  string(9) "snefru256"
  [21]=>
  string(4) "gost"
  [22]=>
  string(7) "adler32"
  [23]=>
  string(5) "crc32"
  [24]=>
  string(6) "crc32b"
  [25]=>
  string(7) "salsa10"
  [26]=>
  string(7) "salsa20"
  [27]=>
  string(10) "haval128,3"
  [28]=>
  string(10) "haval160,3"
  [29]=>
  string(10) "haval192,3"
  [30]=>
  string(10) "haval224,3"
  [31]=>
  string(10) "haval256,3"
  [32]=>
  string(10) "haval128,4"
  [33]=>
  string(10) "haval160,4"
  [34]=>
  string(10) "haval192,4"
  [35]=>
  string(10) "haval224,4"
  [36]=>
  string(10) "haval256,4"
  [37]=>
  string(10) "haval128,5"
  [38]=>
  string(10) "haval160,5"
  [39]=>
  string(10) "haval192,5"
  [40]=>
  string(10) "haval224,5"
  [41]=>
  string(10) "haval256,5"
}
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