openssl_digest
(PHP 5 >= 5.3.0)
openssl_digest — Computes a digest
Description
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.
Warning
This function is currently not documented; only its argument list is available.
Parameters
-
data -
The data.
-
method -
The digest method.
-
raw_output -
Setting to
TRUEwill return as raw output data, otherwise the return value is binhex encoded.
Return Values
Returns the digested hash value on success or FALSE on failure.
Errors/Exceptions
Emits an E_WARNING level error if an unknown signature algorithm
is passed via the method parameter.
- PHP Руководство
- Функции по категориям
- Индекс функций
- Справочник функций
- Криптографические расширения
- OpenSSL
- openssl_cipher_iv_length
- openssl_csr_export_to_file
- openssl_csr_export
- openssl_csr_get_public_key
- openssl_csr_get_subject
- openssl_csr_new
- openssl_csr_sign
- openssl_decrypt
- openssl_dh_compute_key
- openssl_digest
- openssl_encrypt
- openssl_error_string
- openssl_free_key
- openssl_get_cert_locations
- openssl_get_cipher_methods
- openssl_get_md_methods
- openssl_get_privatekey
- openssl_get_publickey
- openssl_open
- openssl_pbkdf2
- openssl_pkcs12_export_to_file
- openssl_pkcs12_export
- openssl_pkcs12_read
- openssl_pkcs7_decrypt
- openssl_pkcs7_encrypt
- openssl_pkcs7_sign
- openssl_pkcs7_verify
- openssl_pkey_export_to_file
- openssl_pkey_export
- openssl_pkey_free
- openssl_pkey_get_details
- openssl_pkey_get_private
- openssl_pkey_get_public
- openssl_pkey_new
- openssl_private_decrypt
- openssl_private_encrypt
- openssl_public_decrypt
- openssl_public_encrypt
- openssl_random_pseudo_bytes
- openssl_seal
- openssl_sign
- openssl_spki_export_challenge
- openssl_spki_export
- openssl_spki_new
- openssl_spki_verify
- openssl_verify
- openssl_x509_check_private_key
- openssl_x509_checkpurpose
- openssl_x509_export_to_file
- openssl_x509_export
- openssl_x509_fingerprint
- openssl_x509_free
- openssl_x509_parse
- openssl_x509_read
Коментарии
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"
}
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.Hmm.. really @mwgamera? openssl_get_cipher_methods() returns cipher methods but openssl_digest() expects a digest method in the second parameter. However even the docu on this page links to the openssl_get_cipher_methods() method in the "See also" section (however this can be a coincidence). Shouldn't it be a digest method from openssl_get_md_methods() instead openssl_get_cipher_methods()?
I'm not very experienced in cryptography but I don't really understand why you would pass a cipher method to a hash function instead of a digest method.