🛠️ Invention or technique

RSA encryption

Cifrado RSA

Date
1977 · confidence high
Place
MIT, Cambridge, Massachusetts, United States
Credited to
Ron Rivest, Adi Shamir and Leonard Adleman (MIT)
People
👤 Adi Shamir1952–👤 Leonard Adleman1945–👤 Ronald Rivest1947–
Field
Knowledge & symbols

⚠️ Disputed: the sources disagree.

What it is

First practical public-key system, based on the difficulty of factoring the product of two large primes, which allows encryption and signing. It protects most secure connections on the internet.

Clifford Cocks (GCHQ) described an equivalent system in 1973, kept secret until 1997.

What it led to

  • Digital certificates and the HTTPS infrastructure
  • Legally valid electronic signatures
  • The quantum threat (Shor's algorithm) and post-quantum cryptography
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Sources✓ verified 2026-09-25