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Cryptography ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],What does it say?
Secrecy ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Traditional Cryptography ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Breaking Traditional Cryptography ,[object Object],[object Object],[object Object],[object Object],[object Object]
Example  (S. Singh, The Code Book, 1999) ,[object Object],[object Object],[object Object],[object Object]
Frequency Analysis ,[object Object],[object Object],[object Object],[object Object]
Frequency Analysis ,[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],THE SOLUTION
Secret-Key Ciphers ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Secret-Key Ciphers made more secure ,[object Object],[object Object],[object Object],[object Object]
How to Establish a Shared Key? ,[object Object],[object Object]
The  Diffie-Hellman  key exchange ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Algorithmic Issues (How to do it Fast) ,[object Object],[object Object],[object Object],[object Object]
Repeated Squaring Algorithm ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
The Woman-in-the-Middle Attack ,[object Object],[object Object]
Public Key Ciphers: how to ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Public Key Ciphers:  Conclusions ,[object Object],[object Object]
Digital Signatures ,[object Object],[object Object],[object Object]
Digital Signatures ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Internet Security ,[object Object],[object Object],[object Object],[object Object],[object Object]
Internet Security ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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