🛠️ Invention or technique

Differential cryptanalysis

Criptoanálisis diferencial

Date
1990 · confidence medium
Place
Rehovot, Israel
Credited to
Eli Biham y Adi Shamir
Field
Knowledge & symbols

What it is

A cryptanalysis technique studying how differences between pairs of input texts propagate through a cipher, to detect non-random behavior and recover the secret key; developed by Biham and Shamir against DES.

What it led to

  • the first practical theoretical attack against the DES standard
  • redesign of later ciphers to resist differential cryptanalysis
  • influence on the design of AES and other block ciphers
  • extension to stream ciphers and hash functions

Links

Sources✓ verified 2026-09-28