GATE | GATE-CS-2014-(Set-1) | Question 34
Which of the following are used to generate a message digest by the network security protocols?
(A) P and R only
(B) Q and R only
(C) Q and S only
(D) R and S only
- RSA – It is an algorithm used to encrypt and decrypt messages.
- SHA 1 – Secure Hash Algorithm 1, or SHA 1 is a cryptographic hash function. It produces a 160 bit (20 byte) hash value (message digest).
- DES – Data Encryption Standard, or DES is a symmetric key algorithm for encryption of electronic data.
- MD5 – Message Digest 5, or MD5 is a widely used cryptographic hash function that produces a 128 bit hash value (message digest).
Q and S i.e SHA 1 and MD5 are used to generate a message digest by the network security protocols.
So, C is the correct choice.
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