A primer into the history of cryptography and the web3 PET ecosystem. Recently I have been diving into MPC, FHE, TEE and ZK and wanted to consolidate my learnings under one wider category of Privacy Enhancing technologies (PETs). I got into web3 due to the appeal of the cypherpunk movement and financial decentralization but with the recent interest of AI and open communication being punished (i.e. Telegram), there is an increasing need for privacy and using PETs to make the world more equitab...