1. Introduction -- 2. From Julius Caesar to simple substitution -- 3. Polyalphabetic systems -- 4. Jigsaw ciphers -- 5. Two-letter ciphers -- 6. Codes -- 7. Ciphers for spies -- 8. Producing random ...

The CFTC has launched a pilot program allowing tokenized digital assets as margin collateral in U.S. derivatives markets. This initiative aims to supervise digital-asset activity in U.S. markets and ...