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The use HMAC



Hello,
 Mechanisms that provide such integrity check based on a secret key are
usually called "message authentication codes" (MAC). Typically, message
authentication codes are used between (two parties) that share a secret
key in order to validate information transmitted between these parties.
Can i use "message authentification codes" between more than two
parties, i mean in multicast application, specially 1- N mode ?
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  Saber.BRAKTA
  LORIA - UHP NANCY I
  CAMPUS SCIENTIFIQUE B.P.239
  54506 VANDOEUVRE-LES-NANCY CEDEX
  E-mail : brakta@loria.fr
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