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Summery Summery
Validates a signed message then returns the message.
Syntax Syntax
Parameters Parameters
- $signedMessage
-
(Required) A signed message
- $publicKey
-
(Required) A public key
Return Return
(string) The original message (if the signature is valid for this public key)
Source Source
File: wp-includes/sodium_compat/src/Compat.php
public static function crypto_sign_open($signedMessage, $publicKey)
{
/* Type checks: */
ParagonIE_Sodium_Core_Util::declareScalarType($signedMessage, 'string', 1);
ParagonIE_Sodium_Core_Util::declareScalarType($publicKey, 'string', 2);
/* Input validation: */
if (ParagonIE_Sodium_Core_Util::strlen($signedMessage) < self::CRYPTO_SIGN_BYTES) {
throw new SodiumException('Argument 1 must be at least CRYPTO_SIGN_BYTES long.');
}
if (ParagonIE_Sodium_Core_Util::strlen($publicKey) !== self::CRYPTO_SIGN_PUBLICKEYBYTES) {
throw new SodiumException('Argument 2 must be CRYPTO_SIGN_PUBLICKEYBYTES long.');
}
if (self::useNewSodiumAPI()) {
/**
* @psalm-suppress InvalidReturnStatement
* @psalm-suppress FalsableReturnStatement
*/
return sodium_crypto_sign_open($signedMessage, $publicKey);
}
if (self::use_fallback('crypto_sign_open')) {
return call_user_func('\\Sodium\\crypto_sign_open', $signedMessage, $publicKey);
}
if (PHP_INT_SIZE === 4) {
return ParagonIE_Sodium_Crypto32::sign_open($signedMessage, $publicKey);
}
return ParagonIE_Sodium_Crypto::sign_open($signedMessage, $publicKey);
}