¶ … digital signatures that it ensures authentication. Explain how and why it does that.
A digital signature is a unique and verifiable "signature" that allows for the reliable and proper determination of whether a file or message is form the person that is otherwise displayed and represented in the message. It is done because it can prove in a definitive way that the sender is who they say they are.
What is the role of the Certificate Authority in a PKI? How are certificate authorities authenticated?
The role of the certificate authority in a Public Key Infrastructure (PKI) is to digitally "sign" a submission using a publicly-accessible key. The recipient uses that same public key to verify the sender as authentic rather than faked.
Why is randomness so important to key generation? What does a truly random system ensure?
A truly random key means that a key...
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