F Young - Cracking the Enigma

A compilation of resources on codes, ciphers, Enigma, and all

Alan Turing
Sites on Alan Turing, Bletchley Park, & Enigma

Alan Turing Archive

This archive contains many of Turing's letters, talks, photographs and unpublished papers, as well as memoirs and obituaries written about him. It contains images of the original documents that are held in the Turing collection at King's College, Cambridge.

Alan Turing: The Enigma

An extension of the book by the same title

Bletchley Park - The Official Site

Our Mission is to highlight the codebreaking achievements of Bletchley Park in the Second World War, its role as a birthplace of computing and its importance for understanding the past and relevance for the future.

Enigma Emulators

A wide variety of Enigma emulators

Google Enigma Emulator

A Google App Enigma Emulator

The Beale Treasure
The Beale Treasure. Find it through cryptography.

Beale Treasure Story

A site on the Beale treasure

Mystery of the Beale Treasure

" I have deposited in the county of Bedford, (Virginia) about four miles from Buford, in an excavation or vault, six feet below the surface of the ground, the following articles belonging jointly to the parties whose names are given in number three herewith.....

Internet Security / PGP
Cryptography & Security on the Web

Phil ZImmerman & PGP

Phil's website & writings on PGP

Yahoo! Security

Protecting our systems and our users’ information is paramount to ensuring Yahoo users enjoy a secure user experience and maintaining our users’ trust. We have taken the following measures to protect your information: Check other search engines & e-mail providers for their policies.

Center for Quantum Computation

Computers & communication

Information Security Group, Royal Holloway College

Welcome to the world-renowned Information Security Group, founded in 1990 to pioneer cyber security education, research and industry engagement

RSA Labs

A leader in the cybersecurity industry for more than 30 years, RSA provides a wide range of industry-leading products and services that allow more than 30,000 organizations worldwide to take control of business and cyber risks.

Museums & Organizations
Museums, Organizations, & Journals

The American Cryptogram Association

The American Cryptogram Association (ACA) is a non-profit organization dedicated to promoting the hobby and art of cryptanalysis -- that is, learning to break ciphers.


Cryptologia is the only scholarly journal in the world dealing with the history, the technology, and the effect of the most important form of intelligence in the world today – communications intelligence. It fosters the study of all aspects of cryptology -- technical as well as historical, pedagogical, and cultural.

National Cryptologic Museum

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