ParagonIE_Sodium_Compat::crypto_aead_chacha20poly1305_ietf_decrypt( string $ciphertext = '', string $assocData = '', string $nonce = '', string $key = '' ): string

895    public static function crypto_aead_chacha20poly1305_ietf_decrypt(896        $ciphertext = '',897        $assocData = '',898        $nonce = '',899        #[\SensitiveParameter]900        $key = ''901    ) {902        /* Type checks: */903        ParagonIE_Sodium_Core_Util::declareScalarType($ciphertext, 'string', 1);904        ParagonIE_Sodium_Core_Util::declareScalarType($assocData, 'string', 2);905        ParagonIE_Sodium_Core_Util::declareScalarType($nonce, 'string', 3);906        ParagonIE_Sodium_Core_Util::declareScalarType($key, 'string', 4);907 908        /* Input validation: */909        if (ParagonIE_Sodium_Core_Util::strlen($nonce) !== self::CRYPTO_AEAD_CHACHA20POLY1305_IETF_NPUBBYTES) {910            throw new SodiumException('Nonce must be CRYPTO_AEAD_CHACHA20POLY1305_IETF_NPUBBYTES long');911        }912        if (ParagonIE_Sodium_Core_Util::strlen($key) !== self::CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES) {913            throw new SodiumException('Key must be CRYPTO_AEAD_CHACHA20POLY1305_IETF_KEYBYTES long');914        }915        if (ParagonIE_Sodium_Core_Util::strlen($ciphertext) < self::CRYPTO_AEAD_CHACHA20POLY1305_ABYTES) {916            throw new SodiumException('Message must be at least CRYPTO_AEAD_CHACHA20POLY1305_IETF_ABYTES long');917        }918 919        if (self::useNewSodiumAPI()) {920            /**921             * @psalm-suppress InvalidReturnStatement922             * @psalm-suppress FalsableReturnStatement923             */924            return sodium_crypto_aead_chacha20poly1305_ietf_decrypt(925                $ciphertext,926                $assocData,927                $nonce,928                $key929            );930        }931        if (self::use_fallback('crypto_aead_chacha20poly1305_ietf_decrypt')) {932            return call_user_func(933                '\\Sodium\\crypto_aead_chacha20poly1305_ietf_decrypt',934                $ciphertext,935                $assocData,936                $nonce,937                $key938            );939        }940        if (PHP_INT_SIZE === 4) {941            return ParagonIE_Sodium_Crypto32::aead_chacha20poly1305_ietf_decrypt(942                $ciphertext,943                $assocData,944                $nonce,945                $key946            );947        }948        return ParagonIE_Sodium_Crypto::aead_chacha20poly1305_ietf_decrypt(949            $ciphertext,950            $assocData,951            $nonce,952            $key953        );954    }