Note 1: Danger of open network communication such as Internet
Note 2: Symmetric Key Crypto-System
Note 3: Problem with Symmetric Key Crypto-System
Note 4: Data Encryption using a Public Key Crypto-System
Note 5: Key Management problem for Public Key crypto-System
Note 6: Digital signature using Public Key Crypto-System
Note 7: Problem with wrong public key
Note 8: Certification Authority vs key server
Note 9: Why strong cryptography is needed?
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