From 1833 to 1836 two lovers in England exchanged 35 love messages via encrypted newspaper advertisements. The key is known. Can my readers help me to decrypt these messages?
Olivia von Westernhagen, who works as a journalist for the German computer magazine c’t, has provided me an article she wrote, which is based on material she found on my blog. It’s a great read, but it’s available in German only.
Various codebreakers have solved thousands of original Enigma messages from World War II over the last few years. Here’s a message of this kind that is still unsolved. Can my readers help?
In 1921 an encrypted telegram was sent from the Portuguese embassy in Berlin to Lisbon. The plaintext is known, but the encryption method used isn’t. Can a reader help?
HistoCrypt 2019 will take place from June 23-26, 2019 in Mons, Belgium. Here’s the Call for Papers. Apart from scientific papers, non-academic presentations are invited.
The year starts with a cryptogram that is easy to solve. In 1817 English novelist Jane Austen sent an encrypted letter with new year’s greetings to her niece. Can you decipher this message?
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