Classical cryptosystems&
codebreakingJenny Wilson • 26 March 2020
1
Classical cryptosystems&
codebreaking
Classical cryptosystems& codebreaking
Jenny Wilson • 26 March 2020
1 CryptosystemsCode – replace entire words by symbolsCipher – replace individual letters by symbols
2 Steganography
3 Steganography:invisible ink
• tattoo
• invisible ink
• microdots
• pinpricks
• ...
1
Classical cryptosystems&
codebreaking
Classical cryptosystems& codebreaking
Jenny Wilson • 26 March 2020
This talk will give a briefhistory of some classicalencryption techniques, andhow to defeat them.
1 CryptosystemsCode – replace entire words by symbolsCipher – replace individual letters by symbols
2 Steganography
3 Steganography:invisible ink
• tattoo
• invisible ink
• microdots
• pinpricks
1
Meeting virtually for the remainder of the Winter 2020 term, Thursdays at 4pm EDT