(Visual Basic 6.0) RSA OAEP Padding

Demonstrates how to use OAEP padding with the RSA encryption algorithm. More information about OAEP Padding.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

' This example assumes the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

Dim rsa As New ChilkatRsa

' RSA public key in XML format:
Dim publicKey As String
publicKey = "<RSAPublicKey><Modulus>of3im3mRgd2NLXIGoK6uYLg6jj0Ug2b42rnqa5Tbwz2ieFqMJqt+++x2oqLYGurlz49nt+7/785g3XYWqoka4u9c9zul6YubIjnBM72dQy7rEkEfbUxgjcxqXyjZFx+FpaxFUecLu688XEu+9UA42VKiCgcl+E7TrqnfeeYpNXc=</Modulus><Exponent>AQAB</Exponent></RSAPublicKey>"

Dim success As Long
success = rsa.ImportPublicKey(publicKey)

' To use Optimal Asymmetric Encryption Padding (OAEP) padding,
' simply set the OaepPadding property:
rsa.OaepPadding = 1

' Encrypt a string and return the encrypted data base64-encoded:
rsa.EncodingMode = "base64"

Dim plainText As String
plainText = "RSA Encryption should be easy."

Dim usePrivateKey As Long
usePrivateKey = 0
Dim encryptedStr As String
encryptedStr = rsa.EncryptStringENC(plainText,usePrivateKey)
Debug.Print encryptedStr