Security Functions or Characteristics of Digital Signatures Include All of the Following

Multiple Choice

Security functions or characteristics of digital signatures include all of the following except

A) a digital signature is the electronic equivalent of a personal signature, which can be forged.
B) digital signatures are based on public keys for authenticating the identity of the sender of a message or document.
C) digital signatures ensure that the original content of an electronic message or document is unchanged.
D) digital signatures are portable.