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PHP openssl_decrypt

PHP original manual for openssl_decrypt [ show | php.net ]

openssl_decrypt

(PHP 5 >= 5.3.0, PHP 7)

openssl_decrypt — Decrypts data

Description

string openssl_decrypt ( string $data , string $method , string $key [, int $options = 0 [, string $iv = "" [, string $tag = "" [, string $aad = "" ]]]] )

Takes a raw or base64 encoded string and decrypts it using a given method and key.

Parameters

data

The encrypted message to be decrypted.

method

The cipher method. For a list of available cipher methods, use openssl_get_cipher_methods().

key

The key.

options

options can be one of OPENSSL_RAW_DATA, OPENSSL_ZERO_PADDING.

iv

A non-NULL Initialization Vector.

tag

The authentication tag in AEAD cipher mode. If it is incorrect, the authentication fails and the function returns FALSE.

aad

Additional authentication data.

Return Values

The decrypted string on success or FALSE on failure.

Errors/Exceptions

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

Emits an E_WARNING level error if an empty value is passed in via the iv parameter.

Changelog

Version Description
5.3.3 The iv parameter was added.
5.4.0 The raw_output was changed to options.
7.1.0 The tag and aad parameters were added.

See Also