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The 64 bit block input key has _____ number of parity bits.

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The 64 bit block input key has _____ number of parity bits.

(a) 4

(b) 6

(c) 8

(d) 16

I have been asked this question by my college professor while I was bunking the class.

My doubt stems from Stream Encryption and Commercial Applications in section Spread Spectrum Techniques of Digital Communications

1 Answer

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Correct option is (c) 8

Easy explanation: The 64 bit input key has 8 parity bits placed in 8,16…..64 bit positions.

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