What BSIMM practice improves the skills of the people most closely associated with the software lifecycle?

James recently received a secret message from Martha containing an order for custom services. He would like to be able to prove that Martha sent the message and that is could not be forged. What cryptographic goal is James attempting to achieve?

a. Confidentiality b. Nonrepudiation c. Security though obscurity d. Integrity e. Authentication

The __________ structure consists of a set of statements that execute in the order in which they appear.

a. control b. decision c. repetition d. sequence