Question

RSA has much longer keys than 3DES. (True or False)

WEP stands for Wired-Equivalent Protocol and is much secure than WPA because it was designed with real experts and cryptographers.(True or False)

Both SSL and SSH use public-key encryption to exchange symmetric-key encryption keys.(True or False)

To authenticate MS, the MSC needs to send SRES to MS for verification.(True or False)

Answer 1

Q1

TRUE

Explanation: RSA, being public key algorithm, uses longer key sizes of 1,024 or 2,048 or 4,096 bits whereas 3DES uses typical key size of 168 bits.

Q2.

FALSE

WEP is actually less secure than WPA which is a newer standard and addresses some security flaws of WEP.

Q3.

FALSE

Although both SSL and SSH use public-key encryption, but it is not used to exchange or transfer symmetric-key encryption keys, rather they are just verified using the public key encryption. Symmetric keys are never transferred,

Q4.

FALSE

The MSC does not send SRES (signed response) to MS, rather the MS sends its calculated SRES to MSC which then verifies the SRES with the one in its triplet (RAND,SRES, Kc) to authenticate the MS.

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