01 · A life in computing
The person behind the work
Ronald Rivest co-invented RSA with Adi Shamir and Leonard Adleman at MIT. The system showed how separate public and private keys could support encryption and digital signatures using arithmetic on large integers. Rivest’s wider work includes algorithms, symmetric cryptography, and voting security. He has combined theoretical analysis with practical designs, helping make cryptographic methods part of everyday digital communication and commerce.
The contribution, explained
Ronald Rivest, Adi Shamir and Leonard Adleman developed RSA. Public information can be used to encrypt a message, while a related private key enables decryption. The construction uses number-theoretic operations with deliberately different computational roles, and it also supports digital signatures.
Why it matters
Public-key techniques made it possible to establish secure relationships without first sharing the same secret key.