mcrypt_decrypt
Decrypts crypttext with given parameters
WarningThis function has been
DEPRECATED as of PHP 7.1.0 and
REMOVED as of PHP 7.2.0. Relying on this function
is highly discouraged.
Description
stringfalse mcrypt_decrypt(
string $cipher
,
string $key
,
string $data
,
string $mode
,
string $iv
= ?
)
Parameters
-
cipher
-
One of the MCRYPT_ciphername
constants, or the name of the algorithm as string.
-
key
-
The key with which the data was encrypted. If the provided key size is
not supported by the cipher, the function will emit a warning and return false
-
data
-
The data that will be decrypted with the given cipher
and mode
. If the size of the data is not n * blocksize,
the data will be padded with '\0
'.
-
mode
-
One of the MCRYPT_MODE_modename
constants, or one of the following strings: "ecb", "cbc", "cfb", "ofb", "nofb" or "stream".
-
iv
-
Used for the initialization in CBC, CFB, OFB modes, and in some algorithms in STREAM mode. If the provided IV size is not supported by the chaining mode or no IV was provided, but the chaining mode requires one, the function will emit a warning and return false
.
Return Values
Returns the decrypted data as a string or false
on failure.