Quote:
Originally Posted by tks
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If people are interested they can provide their solution here.
Let us say A wants to mail an expensive piece of diamond over a special courier service to B.
Let us assume that courier people are inquisitive and will steal the diamond if it is not locked in a box. Let us assume that they will not be able to break the lock because key blanks for such a lock is not available.
Now if A locks the diamonds in a box and sends it, B will not have the key to open the lock to get at the diamond.
A says he cannot mail the key separately because it is kind of unique key and he cannot afford that it be lost in transit.
How can B get the diamond?
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It is much like when you are I try to open our email account. Anything in transit has to be encrypted so that no one can steal content. The receiver has to have a way of decrypting but the receiver does not have the key used to encrypt.. So one can see the parallel to the example above.
While reading this article, it will be nice if anyone is able to provide a solution to the puzzle above as to how B can get the diamond
Let us say A wants to mail an expensive piece of diamond over a special courier service to B.
Let us assume that courier people are inquisitive and will steal the diamond if it is not locked in a box. Let us assume that they will not be able to break the lock because key blanks for such a lock is not available.
Now if A locks the diamonds in a box and sends it, B will not have the key to open the lock to get at the diamond.
A says he cannot mail the key separately because it is kind of unique key and he cannot afford that it be lost in transit.
How can B get the diamond?
===============================
It is much like when you are I try to open our email account. Anything in transit has to be encrypted so that no one can steal content. The receiver has to have a way of decrypting but the receiver does not have the key used to encrypt.. So one can see the parallel to the example above.
While reading this article, it will be nice if anyone is able to provide a solution to the puzzle above as to how B can get the diamond
1. A and B are two entities parted by a large space. They are not in sight of each other.
2. A sends a costly piece of Diamond to B and B knows that the diamond is coming. It is a deal and any deal requires two entities and both have knowledge of the deal.
3. The diamond is locked in a box and can not be opened without the key.
4. The box can not be broken.
5. A after placing the diamond in the box and locking it, can not send the key to B.
6. A will not mail the key separately to any one including to B.
Are these the only given facts of the "situation" or are there any other implied ones. If they are there please state them so that the problem can be looked at with the full knowledge of all the assumptions.