Summery Summery

Opens a message encrypted with crypto_box_seal(). Requires the recipient’s keypair (sk || pk) to decrypt successfully.

Syntax Syntax

ParagonIE_Sodium_Compat::crypto_box_seal_open( string $ciphertext, string $keypair )

Description Description

This validates ciphertext integrity.

Parameters Parameters


(string) (Required) Sealed message to be opened


(string) (Required) Your crypto_box keypair

Return Return

(string) The original plaintext message

Source Source

File: wp-includes/sodium_compat/src/Compat.php

    public static function crypto_box_seal_open($ciphertext, $keypair)
        /* Type checks: */
        ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1);
        ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 2);

        /* Input validation: */
        if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_BOX_KEYPAIRBYTES) {
            throw new SodiumException('Argument 2 must be CRYPTO_BOX_KEYPAIRBYTES long.');

        if (self::useNewSodiumAPI()) {
             * @psalm-suppress InvalidReturnStatement
             * @psalm-suppress FalsableReturnStatement
            return sodium_crypto_box_seal_open($ciphertext, $keypair);
        if (self::use_fallback('crypto_box_seal_open')) {
            return call_user_func('\\Sodium\\crypto_box_seal_open', $ciphertext, $keypair);
        if (PHP_INT_SIZE === 4) {
            return ParagonIE_Sodium_Crypto32::box_seal_open($ciphertext, $keypair);
        return ParagonIE_Sodium_Crypto::box_seal_open($ciphertext, $keypair);



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