The authors work within the Cryptographic Technology Group at the National Institute of Standards and Technology (NIST). Meltem is a cryptographer at NIST and holds a Ph.D. in Cryptography from Middle East Technical University. Kerry is a computer scientist at NIST and holds a D.Sc. in Computer Science from The George Washington University. John is an experienced cryptographer at NIST and has degrees in Computer Science and Economics from the University of Missouri Columbia.