About terminology: in security engineering and cryptography, encryption methods and key management are considered different things[1]. Here in both cases the en

About terminology: in security engineering and cryptography, encryption methods and key management are considered different things[1]. Here in both cases the encryption method is equally secure. But the security of the system depends on of the key management method (or keying, for short). Encryption is necessary, but not sufficient, to have secure . [1] And then there's integrity, replay protection, nonreprudiation, forward security.. etc other properties.