ParagonIE_Sodium_Compat::crypto_sign_open() public WP 1.0

Validates a signed message then returns the message.

{} It's a method of the class: ParagonIE_Sodium_Compat{}

No Hooks.

Return

String. The original message (if the signature is valid for this public key)

Usage

$result = ParagonIE_Sodium_Compat::crypto_sign_open( $signedMessage, $publicKey );

$signedMessage(string) (required)

A signed message

$publicKey(string) (required)

A public key

Code of ParagonIE_Sodium_Compat::crypto_sign_open() ParagonIE Sodium Compat::crypto sign open ^{WP 5.7}

<?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);
}