MIS x10 and 11 Internet Security - MIS10...

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Dhruv Nath MIS 10 Digital Certificates  and Signatures
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Internet Net-based Security Data Data Base Base Server Server Client What are the points where security is required ? Points Client-End Security Server-End Security Message Security
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Message Security Read : The Nuts and Bolts of E-Commerce, Ch 12-15 You go to your broker’s web site, and place an order for buying 1000 shares of Reliance Industries (message) What can go wrong with the message ? Confidentiality Integrity Authentication Non-repudiation
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What’s the Solution ? Internet Security
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Encrypted Message Encryption Algorithm Message Decryption Algorithm Original Message Solution : Encryption Secret key Same key Internet Solution ? Problem ? Symmetric (Shared) Key Encryption What’s the Problem ?
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Encrypted Message Encryption Algorithm Message Decryption Algorithm Original Message Solution : Public Key Encryption Receiver’s Public Key Receiver’s Private Key Internet Only the Receiver can read the message
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