Question: Bob was given a key to a substitution cipher. The key showed that the entire alphabet was rotated 13 steps. What type of cipher is

Bob was given a key to a substitution cipher. The key showed that the entire alphabet was rotated 13 steps. What type of cipher is this? Select one: a. ROT13 b. AES C. XAND13 d. Alphabetic An entity that issues digital certificates is a: Select one: a. signature authority (SA) b, certificate authority (CA) o c. certificate signatory (CS) d. digital signer (DS)

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