Explain how public-key cryptography systems provide an effective means of implementing digital signatures.
What will be an ideal response?
The secret key is used to encode the message, then the user’s public key is used to
decode the message. If indeed the message makes sense when decoded with the public key,
then it must have been encoded with this user’s private key; hence the authentication of the
originating user, and the notion of the digital signature.
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What will be an ideal response?