The story of Kryptos and the cryptanalyst who spent decades trying to solve the CIA sculpture greatest mystery.

Explore the inner workings of the javax.crypto.Cipher class in Java's cryptography API: understand its provider-based architecture ...

The Voynich manuscript has long been shorthand for the unsolved and the unknowable, a late medieval codex filled with looping ...

You could do worse than to confuse the meanings of "code" and "cipher"—even cryptographers sometime use the terms as though they had the same meaning. There is, however, a definite distinction between ...

The cryptic text of a 250-year-old secret society has finally been translated. Researchers from North America and Europe used a powerful computer program to break the code. Daniel Hajek reports on how ...

It’s long been assumed that the identity of the “Zodiac killer,” who terrorized Northern California from the late ‘60s through the early ‘70s, is one of those mysteries that will never be solved.