Have Keccak (SHA-3) example hashes (test vectors) been made available?

Question

I'm interested in implementing Keccak (SHA-3) and would like a set of input/expected output pairs to test against. Have any official test vectors been released? I recall having some for the other SHA routines and they were very helpful.

Answer 1

Yes. See the "Known-answer and Monte Carlo test results" bullet on the downloads page, or go straight to the file. There are whole-message test vectors as well as files describing inputs and outputs for the individual intermediate stages.

And of course, you can always run the reference implementation and compare outputs.

Answer 2

Have Keccak (SHA-3) example hashes (test vectors) been made available?

Yes. The NIST test vectors can be found at SHA-3 Reference and Optimized Implementations. The page includes:

• Description of Known Answer Test (KAT) and Monte Carlo Test (MCT) for SHA-3 Candidate Algorithm Submissions
• Test files and Source Code for Conducting KAT and MCT

These tests may be different from the Keccak test vectors because NIST modified some things. So, for SHA-3, I would specifically use what NIST provides.