Question: A digital signature is formed by creating a _ _ _ ( a ) _ _ _ of a document and then using a _

A digital signature is formed by creating a ___(a)___ of a document and then using a __(b)__ key to encrypt the ___(a)___. The original document and the encrypted ___(a)___ are then sent to the recipient. The recipient decrypts the ___(a)___ using the sender's ___(c)___ key and then takes a ___(a)___ of the received document using the same algorithm that the sender used. The recipient then compares the two ___(a)___(es). If they match, the recipient knows that ___(d)___ changes were made in transit. Further, because the ___(c)___ key used decrypted the received ___(a)___, the recipient knows that the party believed to be the sender is in fact the sender.
The letters a, b, c, and d are placeholders for what group of words?
Group of answer choices
a = hash, b = private, c = public, d = some
a = copy, b = private, c = public, d = no
a = hash, b = private, c = public, d = no
a = hash, b = public, c = private, d = no

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