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A simple protocol - 1. A. B. r B || Are you OK?. r B || Yes, I’m OK. MAC K ( r B || Yes, I’m OK ). A simple protocol - 2. A. B. Are you OK?. Bob || Yes, I’m OK. Sig A ( Bob || Yes, I’m OK ). A simple protocol - 3. A. B. r B || Are you OK?. r B || Bob || Yes, I’m OK.
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A simple protocol - 1 A B rB || Are you OK? rB || Yes, I’m OK MACK ( rB || Yes, I’m OK )
A simple protocol - 2 A B Are you OK? Bob || Yes, I’m OK SigA ( Bob || Yes, I’m OK )
A simple protocol - 3 A B rB || Are you OK? rB || Bob || Yes, I’m OK SigA ( rB || Bob || Yes, I’m OK )
A simple protocol - 4 A B TB || Are you OK? TB || Bob || Yes, I’m OK MACK ( TB || Bob || Yes, I’m OK )
A simple protocol - 5 A B Are you OK? Bob || Yes, I’m OK MACK ( TA || Bob || Yes, I’m OK )
A simple protocol - 6 A B TB || Are you OK? TA || TB || Bob || Yes, I’m OK MACK ( TA || TB|| Bob || Yes, I’m OK )