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Using a .NET .snk Key File for RSA Encryption

Demonstrates how to load and use a .NET .snk key file for RSA encryption. SNK files are created by the Microsoft .NET Strong Name Tool (Sn.exe).

Download Chilkat Ruby Library

require 'chilkat'

rsa = Chilkat::CkRsa.new()

success = rsa.UnlockComponent("Anything for 30-day trial")
if (success != true)
    print "RSA component unlock failed" + "\n"
    exit
end

#  Load a public/private key pair from a .snk key file.
xmlKey = rsa.snkToXml("chilkat2.snk")

print xmlKey + "\n";

#  The xmlKey contains both public and private keys.
#  Import either the public or private for encrypting or
#  decrypting.
rsa.ImportPrivateKey(xmlKey)

bUsePrivateKey = true
encryptedText = rsa.encryptStringENC("Hello World!",bUsePrivateKey)

print encryptedText + "\n";

#  Now decrypt with the public key:
rsa.ImportPublicKey(xmlKey)
bUsePrivateKey = false
decryptedText = rsa.decryptStringENC(encryptedText,bUsePrivateKey)

print decryptedText + "\n";

#  Note: We could have just as well encrypted using the public key
#  and decrypted using the private key.

 

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