Basic HTML version of Foils prepared May 30 99

Foil 7 Secret Key Cryptography

From Basic Mathematics of Security Systems CPS714 Computational Science Information Track -- June 2 99. by Geoffrey C. Fox
This involves a single secret key and standards are DES (Digital Encryption Standard) and IDEA (International Data Encryption Algorithm)
Commercial systems (used in SSL) are RC2 RC4 RC5
  • Note 40 bit RC2 takes a 64 MIP computer one year to break

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