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Feb
4
comment Game with symmetric key
I try to answer. In the last step Bob can send Rb1 instead of Rb such that the decrypted value of Rb(b) is a winner value.
Feb
4
comment Game with symmetric key
Ok, I understand why it is important to specify the encryption method but maybe the question is more general because later there is another question that asks how to improve the reliability without asking the help of a trusted third party.
Feb
4
comment Game with symmetric key
Let's assume that the lengths of the 3 option are the same. When Bob receives the encrypted value of Alice, could he send a value b such that he always wins?
Feb
4
comment Game with symmetric key
@rath The second A is a label, the name of the sender.
Feb
4
awarded  Student
Feb
4
asked Game with symmetric key