sodium_crypto_secretbox_open

Function • Params and return types changed in PHP 8.0

Authenticated shared-key decryption.

PHP 5
PHP 7.0-7.1
PHP 7.2
Added
PHP 7.3-7.4
PHP 8.0
Improved
PHP 8.1
PHP 8.2
PHP 8.3
PHP 8.4
PHP 8.5

sodium_crypto_secretbox_open Function synopsis

sodium_crypto_secretbox_open(
    string $ciphertext,
    string $nonce,
    string $key
  ): string|false

Parameters

$ciphertext

Typestring

Must be in the format provided by sodium_crypto_secretbox (ciphertext and tag, concatenated).

$nonce

Typestring

A number that must be only used once, per message. 24 bytes long. This is a large enough bound to generate randomly (i.e. random_bytes).

$key

Typestring

Encryption key (256-bit).

Return value

Typestring|false

The decrypted string on success or false on failure.

Changes to the sodium_crypto_secretbox_open Function

PHP 8.0

  • Return type added: string|false
  • Parameter name of parameter #1 changed: $string to $ciphertext
  • Parameter type added for parameter #1 ($ciphertext): string
  • Parameter type added for parameter #2 ($nonce): string
  • Parameter type added for parameter #3 ($key): string
  sodium_crypto_secretbox_open(
-     $string,
+     string $ciphertext,
-     $nonce,
+     string $nonce,
-     $key
+     string $key
-   )
+   ): string|false

PHP 7.2

  • Function added

sodium_crypto_secretbox_open Function Availability

PHP VersionAvailability
PHP 8.5Future Release Yes
PHP 8.4Upcoming Release Yes
PHP 8.3Supported (Latest) Yes
PHP 8.2Supported Yes
PHP 8.1Security-Fixes Only Yes
PHP 8.0Unsupported Yes
PHP 7.4Unsupported Yes
PHP 7.3Unsupported Yes
PHP 7.2Unsupported Yes
PHP 7.1Unsupported No
PHP 7.0Unsupported No
PHP 5.6Unsupported No
PHP 5.5Unsupported No
PHP 5.4Unsupported No
PHP 5.3Unsupported No