Injective functions - PowerPoint PPT Presentation

Functions

Functions. Chapter 12. Acknowledgement. I have used materials from the following sources: Textbook Lecture notes slides prepared by Prof. Bulatov . http://cse.unl.edu/~choueiry/S13-235 / http:// www.math-cs.gordon.edu /courses/mat231/ notes.html. Outline. Functions

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Public Key Cryptography Diffie-Hellman, Discrete Log, RSA

Diffie-Hellman Key Exchange, Discrete Log Problem Public Key Crypto RSA. Public Key Cryptography Diffie-Hellman, Discrete Log, RSA. CSCI283 Fall 2005 GWU. Diffie-Hellman Key Exchange. Diffie-Hellman Key Exchange. Protocol for exchanging secret key over public channel.

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Functions

Functions. Inverse Relation. Let R be a relation from X to Y. R -1 = {yR -1 x | xRy } Examples of R &amp; R -1 : x &lt; y &amp; y &gt; x. x | y &amp; y is an integral multiple of x. Functions. R( a ) = { b | a R b } is the image of a under R.

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