CISSP-ISSAP: Information Systems Security Architecture Professional

Question

Which two of the following cryptographic methods does the NTFS Encrypting File System (EFS) use to encrypt data stored on a disk on a file-by-file basis?

Choose two

Explanation

EFS generates a symmetric file-encryption key for each file and encrypts copies of that key with authorized users’ public keys. Microsoft’s EFS implementation uses RSA for this public-key cryptography, so the applicable methods are public-key cryptography and RSA.

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CISSP-ISSAP: Information Systems Security Architecture Professional

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