High Quality Content by WIKIPEDIA articles! David Chaum is the inventor of many cryptographic protocols, including blind signature schemes, commitment schemes, and digital cash. In 1982, Chaum founded the International Association for Cryptologic Research (IACR), which currently organizes academic conferences in cryptography research. He has contributed to the industry advancement of electronic cash, partially in his role as founder of DigiCash, an electronic cash company, in 1990.