Clarification in CCM (authentication and encryption)

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amitk3553

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Hello,

Could somebody explain me followings in CCM mode

1) Meaning of M(size of authentication) and L(Size of length field)?
2) What is nonce and purpose of nonce?
3) Nonce of 15-L octets. what is meaning of 15-L octets?


Regards
cam
 

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