Randomization is also required for other primitives, such as universal hash functions and message authentication codes based thereon.

And that requires message authentication to sort of wrap this entire thing.

CipherSaber provides no message authentication.

In some models message authentication is allowed whereas in others processes are completely anonymous.

That is, it must be made recourse to for personal verification and message authentication.

Identical cryptographic keys are used for message authentication and encryption.

An alternative hypothesis is that the scytale was used for message authentication rather than encryption.

Data may also be optionally processed by any number of provided codecs which can perform operations such as encryption, compression, or adding message authentication.

As traditionally used, one-time pads provide no message authentication, the lack of which can pose a security threat in real-world systems.

SSL 2.0 also had a problem in that it used identical cryptographic keys for both message authentication and encryption.