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Public Key Infrastructure

Public Key Infrastructure. Encryption and decryption (Cryptography) Plain text  cipher text Application of digital certificate (e-cert) to obtain a pair of keys Public key and private key Asymmetric key scheme Public key encrypt, private key decrypt Private key encrypt, public key decrypt.

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Public Key Infrastructure

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  1. Public Key Infrastructure • Encryption and decryption (Cryptography) • Plain text  cipher text • Application of digital certificate (e-cert) to obtain a pair of keys • Public key and private key • Asymmetric key scheme • Public key encrypt, private key decrypt • Private key encrypt, public key decrypt

  2. Sending secret message

  3. Digital Signature

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