Multiple choice technology security

Which of the following method would be proper to use when encrypting personal information

  1. XOR'ing with a cryptographically secure random number

  2. Triple DES

  3. DES-CBC 56bits

  4. Salted hash with a cryptographically secure random number
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Triple DES (3DES) is a legitimate symmetric encryption algorithm that provides strong encryption for personal information when properly implemented. XOR with a random number (A) is not secure for encryption. DES-CBC with 56-bit keys (C) is deprecated and too weak by modern standards. Salted hash (D) is a one-way function, not encryption - you cannot recover the original data.

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