Smart Cards - CES

Digital Signatures
The advantages of digital signatures are that they
allow verification of the authenticity of information
without the need of a private key.
It ensures data has been untouched since its signing.
It also ensures that the sender of a signed message
cannot later repudiate the message since the
signature is generated by his private key which is
only known to him.
For example, if someone were to send a message
stating opinions, the sender cannot later deny the
message was sent.
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