Questions tagged [kmac]
KMAC or Keccak Message Authentication Code is a proposed MAC based on the SHA-3 hash.
5
questions
1
vote
1answer
41 views
Recommended Shake256 digest size for KMAC based HKDF
On the wiki page for HKDF, in the Python Implementation, there is a hash_length variable for the ...
1
vote
0answers
49 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 ...
2
votes
0answers
152 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 ...
9
votes
2answers
2k 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 ...
5
votes
1answer
556 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 ...
