Saturday, February 10, 2018

cryptography - Challenge for lovers


One of my friends gave me this puzzle. Please help me find the answer for it.


Jane and Mike have fallen in love, and Mike wishes to send her a ring via mail. Unfortunately they live in Kleptopia where anything sent by mail will be stolen unless it is in a padlocked box. The two of them have many padlocks, but none to which the other has a key. How can Mike get the ring safely to Jane?



Answer



Solution:



Mike sends a box with the ring locked with the padlock.
Jane attaches her padlock to the box and sends it back to Mike.
Mike removes his padlock and sends the box back to Jane.

Jane removes the padlock and opens the box. She gets the ring and hopefully says "Yes".



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