| Symmetric key cryptography is used to provide data confidentiality and data authentication. |
| Personal cryptography technology was for years classified as a munition by the US government, and could not be exported. |
| Learn the basics of network security, including cryptography, security policies, and secure network design. |
| Would you trust a cryptographer who didn't know the difference between symmetric and public-key cryptography? |
| He made major contributions to cryptography and developed a general theory. |
| With no taste for combat, he had wondered if he might find a niche in cryptography. |
