Question: 8. In mutual authentication, the problem faced by authentication key exchange is 9. Schnorr digital signature is based on problem. 10- In HMAC, the block

8. In mutual authentication, the problem faced by authentication key exchange

8. In mutual authentication, the problem faced by authentication key exchange is 9. Schnorr digital signature is based on problem. 10- In HMAC, the block obtained as a result of XOR operation between K+ and opad is --------bits? o

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