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A user's credential for an application is stored in a relational database. Which control protects the confidentiality of the credential while it is stored?
Correct Answer: C
A salted cryptographic hash of the password is a control that protects the confidentiality of the credential while it is stored in a relational database. A salt is a random value that is added to the password before hashing it, to make it more resistant to brute-force attacks and rainbow tables. A hash is a one-way function that transforms the password into a fixed-length output that is difficult to reverse. A salted hash makes it harder for an attacker to guess or crack the password, even if they have access to the database. References: CISSP All-in-One Exam Guide, Chapter 5: Identity and Access Management, Section: Password Management, pp. 381-382.