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Public Key Infrastructure uses asymmetric key encryption between parties. The sender encrypts information using the intended recipient's 'public' key in order to provide confidentiality. The recipient uses their own 'private' key to decrypt the information. %The 'infrastructure' of this methodology ensures that:
The recipient's identity can be positively verified by the sender.
The sender and recipient have reached a mutual agreement on the key exchange method.
The sender is the only person with access to the recipient's private key.
The channels through which the information flows are secure.
Through using PKI, the recipient's identify can be positively verified by the sender since the sender knows the 'public' key being used belongs to a specific user. By using the public key of the recipient, only the recipient can decrypt the information using their public key.
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