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... S. ... For signatures
not only to provide data integrity, but also
to capture user intentions to make
commitments, the digital signature process
may include:
a) capturing the entire context of the
electronic transaction or document,
and precisely what the signer is
committing to;
b) ensuring that the data displayed to the
user accurately reflects the data to be
digitally signed;
c) requiring the user to signal an
understanding of the commitment
being made, and a desire to be bound
to this;
d) authenticating the user in order that
the users private key becomes
available to the signing device;
e) computing the signature based on the
signers private key and the data being
signed;
f) a timestamp server optionally
appending a time-date field to the data
and signers signature and then
signing; and
g) forwarding the signed transaction for
processing, storage, or subsequent
verification.
Digital Signature Creation Send Message Digital Signature Verification 1 3 2
Original
Message
(plain text)
Originator’s
Private Key
Create
Signature
Original
Message
Verify
Signature
Original Message
Yes (valid signature) or
No (invalid signature)
Digital Signature
Originator’s
Public Key
Digital Signature
Figure 1. ... To do so, you would encrypt the
symmetric key using the bank’s public key.
Approximate Word count = 4448
Approximate Pages = 17.8
(250 words per page double spaced)
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