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Old Version 2

changes.mady.by.user Jean-luc KRIKER

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New Version 3

changes.mady.by.user Jean-luc KRIKER

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HMAC:   Hashed Message Authentication Code 




Sender ( Data + pre-shared Key )

>>

> hash>> HASH1 

send: Data +

hash1

Hash1

 Receiver: ( Data + preshared key) >> hash2 

Data > hash> Hash2 

Compare Hash2 wit rx Hash1









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