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Questions tagged [kmac]

KMAC or Keccak Message Authentication Code is a proposed MAC based on the SHA-3 hash.

1
vote
0answers
42 views

Parallel MAC vs doubled rounds for SipHash, KMAC and others

SipHash 4-8 is documented by the authors as being about half the speed of SipHash 2-4 and is obviously the more conservative option. I was wondering from a security perspective how this would compare ...
3
votes
0answers
141 views

Using NIST constructions based on Keccak like cSHAKE128 for other sponges

NIST defines a lot of interesting applications of sponges in FIPS 202 and NIST SP 800-185 like the XOF cSHAKE128 or the MAC scheme KMAC. All this schemes come with a security guarantee and are ...
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2answers
1k views

Should I use HMAC or KMAC for SHA3?

I am planning to implement a MAC function for the SHA3. I read that its latest variant is KMAC. I am confused by the comments in the http://keccak.noekeon.org/ website. Its says... Unlike SHA-1 and ...
6
votes
1answer
447 views

Equivalent security of KMAC and different HMAC instances?

In the August 2016 draft of SP 800-185, SHA-3 Derived Functions (pdf) there is a table for equivalent security settings for KMAC, the MAC derived from SHA-3, and some previous MACs (Table 1 on pages ...