1. Anderson, R.J., Bergadano, F., Crispo, B., Lee, J.-H., Manifavas, C., Need-ham, R.M.: A new family of authentication protocols. ACM Operating Systems Review 32(4), 9–20 (1998)
2. Haller, N.: The S/KEY one-time password system. Bellcore Internet RFC 1760 (February 1995)
3. International Organization for Standardization, Genéve, Switzerland. ISO/IEC 10118-3, Information technology — Security techniques — Hash-functions — Part 3: Dedicated hash-functions (1998)
4. International Organization for Standardization, Genéve, Switzerland. ISO/IEC 9797-1, Information technology — Security techniques — Message Authentication Codes (MACs) — Part 1: Mechanisms using a block cipher (1999)
5. International Organization for Standardization, Genéve, Switzerland. ISO/IEC 9797-2, Information technology — Security techniques — Message Authentication Codes (MACs) — Part 2: Mechanisms using a hash-function (2000)