Question

which is a representation of text as a single string of digits, which was created using a formula for the purpose of electronic signatures?
o a. unique bit string
b. electronic transaction standard
c. security rule
d. message digest

Explanation:

A message digest is a fixed - length string of bytes (which can be represented as a string of digits) created by a one - way hash function from an arbitrary - length piece of text. It is used in electronic signatures. A unique bit string is too general. An electronic transaction standard is a set of rules for transactions, not a text representation. A security rule is a policy, not a text - to - digit string for electronic signatures.

Answer:

d. message digest