How can Alice tell a secret to Bob, such that Charlie can't listen?
What if all that Alice knows about Bob is his signature?
This problem, of cryptography, is translated into a riddle. Alice has a Kohinoor Diamond. She needs to send it to Bob, using a courier Charlie. There is no other medium of communication. Alice has a lock, box, diamond and a key. She can use the courier any number of times. How does she send the diamond, without sending the diamond.
We can solve it backwards.Bob had the box and he took the diamond safely. It must have been locked and the key wasn't sent, so the lock must have been put by Bob. So, in the previous step, Bob put a second lock.
The protocol is simple. Alice sends a locked box which is locked by Bob, with his own lock. Bob sends the box back to Alice, who unlocks her own lock and then sends it back to him. Bob opens his lock and takes his diamond.
Note: It took a significant amount of time to arrive at this solution.The one who solved it, got the idea during a voyage. This method is a mere interpretation/reconstruction of the solution.
Business Research- Can we ask for questions in business management and seek scientific solutions for problems like this?
In the next post, we shall discuss an elegant solution to the problem of developing a rigorous notion of information(Entropy).
What if all that Alice knows about Bob is his signature?
This problem, of cryptography, is translated into a riddle. Alice has a Kohinoor Diamond. She needs to send it to Bob, using a courier Charlie. There is no other medium of communication. Alice has a lock, box, diamond and a key. She can use the courier any number of times. How does she send the diamond, without sending the diamond.
We can solve it backwards.Bob had the box and he took the diamond safely. It must have been locked and the key wasn't sent, so the lock must have been put by Bob. So, in the previous step, Bob put a second lock.
The protocol is simple. Alice sends a locked box which is locked by Bob, with his own lock. Bob sends the box back to Alice, who unlocks her own lock and then sends it back to him. Bob opens his lock and takes his diamond.
Note: It took a significant amount of time to arrive at this solution.The one who solved it, got the idea during a voyage. This method is a mere interpretation/reconstruction of the solution.
Business Research- Can we ask for questions in business management and seek scientific solutions for problems like this?
In the next post, we shall discuss an elegant solution to the problem of developing a rigorous notion of information(Entropy).
No comments:
Post a Comment