Rechercher une fonction PHP

openssl_decrypt

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(PHP 5 >= 5.3.0, PHP 7)

openssl_decrypt — Decrypts data

Description

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

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

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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.

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Return Values

The decrypted string on success or FALSE on failure.

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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.

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Changelog

Version Description
7.1.0 The tag and aad parameters were added.
5.4.0 The raw_output was changed to options.
5.3.3 The iv parameter was added.
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Document created the 30/01/2003, last modified the 26/10/2018
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References

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