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DANGER! UNAUTHENTICATED ENCRYPTION!
Syntax Syntax
Description Description
Unless you are following expert advice, do not used this feature.
Algorithm: XSalsa20
This DOES NOT provide ciphertext integrity.
Parameters Parameters
- $message
-
(Required) Plaintext message
- $nonce
-
(Required) Number to be used Once; must be 24 bytes
- $key
-
(Required) Encryption key
Return Return
(string) Encrypted text which is vulnerable to chosen- ciphertext attacks unless you implement some other mitigation to the ciphertext (i.e. Encrypt then MAC)
Source Source
File: wp-includes/sodium_compat/src/Compat.php
public static function crypto_stream_xor($message, $nonce, $key)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($message, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 2);
ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 3);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_STREAM_NONCEBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_SECRETBOX_NONCEBYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_STREAM_KEYBYTES) {
throw new SodiumException('Argument 3 must be CRYPTO_SECRETBOX_KEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
return sodium_crypto_stream_xor($message, $nonce, $key);
}
if (self::use_fallback('crypto_stream_xor')) {
return (string) call_user_func('\\Sodium\\crypto_stream_xor', $message, $nonce, $key);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Core32_XSalsa20::xsalsa20_xor($message, $nonce, $key);
}
return ParagonIE_Sodium_Core_XSalsa20::xsalsa20_xor($message, $nonce, $key);
}