100+ Public key ka PowerPoint (PPT) Presentations, Public key ka PPTs

Public key ka - PowerPoint PPT Presentation

October 2, 2003

October 2, 2003. Introduction to Computer Security Lecture 6 Cryptography. Overview of the DES. A block cipher: encrypts blocks of 64 bits using a 64 bit key outputs 64 bits of ciphertext A product cipher performs both substitution and transposition (permutation) on the bits

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894 views • 79 slides

Asymmetric cryptography (aka Public key cryptography)

Asymmetric cryptography (aka Public key cryptography). (Slides by Jaap-Henk Hoepman & Jeroen Doumen). Contents. Why public key cryptography Some systems Diffie-Helman RSA Applications Authentication Key-management Certificates / PKI. Many symmetric keys needed. Bob. Carol. Zeke.

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720 views • 41 slides

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Public key ka - PowerPoint PPT Presentation

October 2, 2003

Asymmetric cryptography (aka Public key cryptography)