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Symmetric Key - E-Commerce - Lecture Slides, Slides of Fundamentals of E-Commerce

Fundamentals of E-Commerce

E-Commerce is taking over the traditional commerce practices. It is of special concern for the IT students. Following are the key points of these Lecture Slides : Symmetric Key, Key Management, Bob Generates, Bob Publishes, Digital Signatures, Generation Procedure, Verification Procedure, Accept, Reject, Directory

Typology: Slides

2012/2013

Uploaded on 07/30/2013

asif.ali 🇮🇳

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146 documents

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Download Symmetric Key - E-Commerce - Lecture Slides and more Slides Fundamentals of E-Commerce in PDF only on Docsity! Symmetric Key Crypto D(E(x, k), k) = x (decryption, encryption, plaintext, key) • Alice and Bob choose kAB • Alice: y <-- E(x, kAB) (ciphertext) • Alice --> Bob: y • Bob: x <-- D(y, kAB) (Eve does not know kAB) Docsity.com Well Studied and Commercially Available – DES – IDEA – FEAL-n – RC5 – AES • Users must deal with – Government (especially export) – Key management Docsity.com 3-part Scheme Key Generation Procedure c c PKjf SKjf directory JF’s machine ... Docsity.com Signature Procedure Doc SKjf SIG Docsity.com Doc PK; SIG \ oS | Accept / Reject Docsity.com

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