C12.22 standard for transport of meter-based data over a network. In 2012 Kazuhiko Minematsu, Stefan Lucks, Hiraku Morita and Tetsu Iwata published a paper that proves the security of the mode with messages longer than the key, but demonstrates a trivial attack against short messages using this mode. The authors stated that they did not know whether the ANSI C12.22 protocols were vulnerable to the attack. See also Authenticated Encryption with Associated Data (AEAD) Authenticated Encryption (AE) CCM mode CTR mode OMAC References External links NIST: Block Cipher Modes A Critique of CCM (February 2003) Software implementations C++: Dr. Brian Gladman's crypto library implementing EAX mode of operation Pascal / Delphi: Wolfgang Ehrhardt's crypto library implementing EAX mode of operation Java: BouncyCastle crypto library implementing EAX mode of operation C: libtomcrypt implementing EAX mode of operation Hardware implementations Block cipher modes of operation Authenticated-encryption schemes