GCIA: GIAC Certified Intrusion AnalystDemo

By GIAC · Question Mode

QuestionQ60

Advanced IDS Concepts

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

Choose two
  • A Public key
  • B Digital certificates
  • C Twofish
  • D RSA
Explanation

EFS uses a symmetric File Encryption Key to encrypt a file’s data and protects that key with the public keys of authorized users. Those public keys are held in EFS user certificates, so public-key cryptography and digital certificates provide the access and key-protection mechanism for encrypted files. Microsoft Learn: EFS overview

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