Talk:IAPM (mode)
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IAPM was the first cipher mode created to provide both authentication and privacy...
Here's what I was able to uncover:
May 2002
Patents can be a bear for me because I'm not always aware of the minor legal issues. But I think this is one of the earliest Authenticated Encryption modes: US2003/0223585 A1, "Method and Apparatus for Performing Encryption and Authentication", May 2002 by Tardo and Matthews. It appears they perform the single pass operation (see the methods accompanying Figure 7), but it also appears that Authenticate and Encrypt (A&E) is performed. According to Krawczyk, A&E is insecure but I don't think it affects the legal standing of the "single pass" innovation.
May 2003
Kohno, Viega, Whiting, "CWC: A High-Performance Conventional Authenticated Encryption Mode", IACR, May 2003 (http://eprint.iacr.org/2003/106).
December 2003
Jutla, "Encryption Modes with Almost Free Message Integrity", Journal of Cryptography, December 2003 (http://www.springerlink.com/content/q615311611mx2057/).