Match the following cryptographic algorithms with their design issues : List-I…
2014
Match the following cryptographic algorithms with their design issues :
List-I (Algorithm) | List-II (Characteristic) |
a. DES | i. Message Digest |
b. AES | ii. Public key |
c. RSA | iii. 56-bit key |
d. SHA-1 | iv. 128-bit key |
Codes :
Answer: C. a-iii, b-iv, c-ii, d-i — Correct matching and brief explanations: DES: 56-bit key — DES is a legacy symmetric block cipher that historically used a 56-bit key. AES: 128-bit key (also…
- A.
a-ii, b-i, c-iv, d-iii
- B.
a-iii, b-i, c-iv, d-ii
- C.
a-iii, b-iv, c-ii, d-i
- D.
a-iv, b-i, c-ii, d-iii
Attempted by 31 students.
Show answer & explanation
Correct answer: C
Correct matching and brief explanations:
DES: 56-bit key — DES is a legacy symmetric block cipher that historically used a 56-bit key.
AES: 128-bit key (also supports 192/256) — AES is a modern symmetric block cipher commonly used with a 128-bit key size.
RSA: Public key — RSA is an asymmetric (public-key) algorithm used for encryption, key exchange, and digital signatures.
SHA-1: Message Digest — SHA-1 is a cryptographic hash function producing a message digest (hash) of input data.
Summary: DES → 56-bit key; AES → 128-bit key; RSA → Public key; SHA-1 → Message Digest.