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Voice privacy in GSM cellular telephone protocol is provided by _______(a) A5/2 cipher(b) b5/4 cipher(c) b5/6 cipher(d) b5/8 cipherI had been asked this question during an online exam.The question is from Cryptography in chapter Networking of Computer Network

Answer» RIGHT answer is (a) A5/2 CIPHER

The EXPLANATION: The A5/2 cipher was published in the YEAR 1996 and was cryptanalysed in the same year within a month. It’s use was discontinued from the year 2006 as it was really weak.


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