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First of all let me point out that I am aware of all the theory behind asymmetric encryption and signing, and other related areas like signcryption, etc.
It seems that mathematically it is possible to ...
This may sound weird:
What if I don't let others know my public key, then use my private key to encrypt, and the public key to decrypt? Is this secure?
Let me explain a little bit:
Common usuage: use ...
Let's say I have a message, a Private Key and a Public Key.
Normally if you want to see if the message is unaltered and is from the sender you would have the message part + signature part, which you ...