| • | RSA Security |
| • | Francis Litterio's cryptography page |
| • | International Association for Cryptologic Research |
| • | Applied Cryptography, 2nd edition, by Bruce Schneier [John Wiley & Sons, 1995, ISBN: 0471117099] |
| • | Handbook of Applied Cryptography by Alfred J. Menezes et al. [CRC Press, 1996, ISBN: 0849385237] |