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Am looking for a very simple set of methods:
1: VB.NET or C# based (prefer VB.NET but C# is ok) for:
a. Encrypting a string message with a RSA public key
b. Decrypting/Verifying a message encrypted with a RSA private key using the public key.
2: PHP based functions to:
a. Decrypt a string message with a RSA private key (string encrypted with method 1a)
b. Encrypt a string message with a RSA private key (to be decrypted by 1b).
I would also like methods for the reverse created as well, in case they are ever needed - VB.NET/C# encrypting with private key and a PHP function to decrypt with private key.
I would also like the coder to include instructions on how to secure this communication using a 3rd party public/private key pair.
This should be a very simple project for someone with experience in RSA cryptology, but the successful conclusion of this project will lead to another larger project in a related area (application security). This is a necessary first step.