Klaus Schmeh Jul 19, 2026 My new book on Post-Quantum Cryptography has been published I’m happy to announce that my new book, Post-Quanten-Kryptografie (“Post-Quantum Cryptography”), has just been published. Read More 3 comments InGeneral
Klaus Schmeh Apr 19, 2026 The Ohio cryptogram: An unsolved crypto mystery Among the many unsolved historical ciphers, one mystery that I find particularly intriguing is the Ohio Cryptogram. More than a century after its publication, this encrypted message remains unsolved. Read More No Comments InGeneral
Klaus Schmeh Apr 16, 2026 Welcome to my new website! On this website, you will find a wide range of information about the history of cryptography, codebreaking, and related topics. Read More No Comments InGeneral