That attack you described is a canonicalization flaw, and I think it's one of th...

		tptacek on Oct 29, 2009 \| parent \| context \| favorite \| on: H(m \|\| k) also insecure, you really should use HMA... That attack you described is a canonicalization flaw, and I think it's one of the least talked-about, most prevalent failures in MAC-only security systems. Colin had a good canonicalization flaw in Amazon AWS.