A digital signature authenticates the sender of a ... key encryption system for the following purposes. See public key cryptography. Signed certificates authenticate a website and establish ...

If it is not, you will see a message like one of the following: "The digital signature on this message can't be verified. This message has a digital signature, but it wasn't verified because the ...

An electronic signature is often confused with a "digital signature," because it uses digital signature technology for detection alteration. An electronic signature also requires user ...