diff --git a/src/Socialbox/Classes/Cryptography.php b/src/Socialbox/Classes/Cryptography.php index 4c60541..d4337a9 100644 --- a/src/Socialbox/Classes/Cryptography.php +++ b/src/Socialbox/Classes/Cryptography.php @@ -175,7 +175,7 @@ } $sharedSecret = sodium_crypto_scalarmult($decodedPrivateKey, $decodedPublicKey); - $derivedKey = sodium_crypto_generichash($sharedSecret, null, SODIUM_CRYPTO_SECRETBOX_KEYBYTES); + $derivedKey = sodium_crypto_generichash($sharedSecret, '', SODIUM_CRYPTO_SECRETBOX_KEYBYTES); $result = sodium_bin2base64($derivedKey, self::BASE64_VARIANT); // Clean up sensitive data