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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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Presentation Transcript
slide1

A simple protocol - 1

A

B

rB || Are you OK?

rB || Yes, I’m OK

MACK ( rB || Yes, I’m OK )

slide2

A simple protocol - 2

A

B

Are you OK?

Bob || Yes, I’m OK

SigA ( Bob || Yes, I’m OK )

slide3

A simple protocol - 3

A

B

rB || Are you OK?

rB || Bob || Yes, I’m OK

SigA ( rB || Bob || Yes, I’m OK )

slide4

A simple protocol - 4

A

B

TB || Are you OK?

TB || Bob || Yes, I’m OK

MACK ( TB || Bob || Yes, I’m OK )

slide5

A simple protocol - 5

A

B

Are you OK?

Bob || Yes, I’m OK

MACK ( TA || Bob || Yes, I’m OK )

slide6

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 )