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Exam SY0-501 topic 1 question 745 discussion

Actual exam question from CompTIA's SY0-501
Question #: 745
Topic #: 1
[All SY0-501 Questions]

Which of the following encryption algorithms require one encryption key? (Choose two.)

  • A. MD5
  • B. 3DES
  • C. BCRYPT
  • D. RC4
  • E. DSA
Show Suggested Answer Hide Answer
Suggested Answer: BD 🗳️
by SaintRizzy at Nov. 5, 2020, 3:06 p.m.

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exiledwl
4 years, 4 months ago
Would BCRYPT technically be a correct answer as well? BCRYPT is a key stretching but it uses blowfish (symmetric) over and over. Technically isn't this using 1 key as well?
upvoted 2 times
Cindan
4 years, 1 month ago
Key stretching and encryption are totally different dude
upvoted 3 times
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Frostty
4 years, 5 months ago
The question is looking for Symmetric Algo's. 3DES & RC4 are the only one's.
upvoted 4 times
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SaintRizzy
4 years, 5 months ago
3DES needs 3 keys. I'd go with RC4 and DSA
upvoted 1 times
b4ssey
4 years, 5 months ago
and it is still symmetric? The 3 means it goes through its cipher algorithm 3 times.
upvoted 1 times
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MikeDuB
4 years, 5 months ago
3DES does not need 3 keys bro. The provided answer is correct
upvoted 7 times
exiledwl
4 years, 4 months ago
Actually 3DES can use either 1, 2, or 3 different keys. Symmetric algos: DES, 3DES, RC4, AES, Blowfish, Twofish Block Cipher Modes: ECB, CBC, CTR, GCM Asymmetric algos: DFE, RSA, DSA, ECC, PGP Hashing algos: MD5, SHA1, SHA2, HMAC, RIPEMD Key stretching libraries: BRCRYPT, PBKDF2
upvoted 8 times
who__cares123456789___
4 years, 3 months ago
DSA is digital sig...anytime you use a sig algo, you will encrypt with yo privates, and they can decrypt with yo public!! Provided answers are correct....for once!
upvoted 2 times
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