Learn how to implement a classic substitution cipher in C! This step-by-step tutorial walks you through encoding and decoding messages by replacing each letter with another according to a fixed key. A ...

A new study suggests the Voynich manuscript, written in an unknown script sometime in the 1400s, could be a type of encrypted message. Science journalist Michael Greshko created the 'Naibbe cipher', a ...

The Voynich manuscript — often called the most mysterious manuscript in the world — has eluded attempts to understand its origin, nature, and purpose for centuries. Its text is made up of a strange ...

The year was 1637, and Georg Baresch, an alchemist and renowned collector of antiquities based in Prague, had a baffling mystery on his hands. For years now, he had been in possession of a most ...

The Cipher class, central to the javax.crypto package, abstracts encryption/decryption through a provider-based architecture that delegates to pluggable CipherSpi implementations for ...

The Cipher class, central to the javax.crypto package, abstracts encryption/decryption through a provider-based architecture that delegates to pluggable CipherSpi implementations for ...

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Add Yahoo as a preferred source to see more of our stories on Google. The Kryptos sculpture sits in front of the CIA headquarters in Virginia. (Carol M. Highsmith/Buyenlarge/Getty Images) The ...

The 35-year-old saga of Kryptos, an enigmatic sculpture containing four encrypted messages outside the headquarters of the U.S. Central Intelligence Agency, recently took a bizarre twist.