220.127.116.11 Digital Signatures
A more efficient way to prove message origin is, as with data integrity, to use a digital signature. Remember that a digital signature is a message digest encrypted with the senders private key, which is used by a documents receiver to verify that:
A receiver may wish the verification of a public key, to make sure that the public key they have really is assigned to the person claiming to have sent the message. This is done through the Public Key Infrastructure, using certificates, described in the next major section.
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