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Entity Authentication and Key Agreement PowerPoint PPT Presentation


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Entity Authentication and Key Agreement. CSE 651. Entity Authentication. Problem: Alice wants to prove to Bob that she is Alice and/or vice versa. Basic idea: Alice shows that she knows some secrecy which is presumably known only to Alice (and Bob).

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Entity Authentication and Key Agreement

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Entity authentication and key agreement l.jpg

Entity Authentication andKey Agreement

CSE 651


Entity authentication l.jpg

Entity Authentication

Problem: Alice wants to prove to Bob

that she is Alice and/or vice versa.

Basic idea: Alice shows that she knows some

secrecy which is presumably known only to Alice

(and Bob).

That secrecy could be, for example:

- Alice’s password or PIN

- a MAC or encryption key shared by Alice and Bob, or

- Alice’s RSA private key.


Key agreement distribution l.jpg

Key Agreement/Distribution


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