(Classic ASP) RSA OAEP Padding

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

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
success = 0

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

set rsa = Server.CreateObject("Chilkat.Rsa")

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

set pubKey = Server.CreateObject("Chilkat.PublicKey")
success = pubKey.LoadFromString(pubKeyXml)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( pubKey.LastErrorText) & "</pre>"
    Response.End
End If

success = rsa.UsePublicKey(pubKey)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( rsa.LastErrorText) & "</pre>"
    Response.End
End If

' To use Optimal Asymmetric Encryption Padding (OAEP) padding,
' simply set the PkcsPadding property to 0
rsa.PkcsPadding = 0

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

plainText = "RSA Encryption should be easy."

usePrivateKey = 0
encryptedStr = rsa.EncryptStringENC(plainText,usePrivateKey)
Response.Write "<pre>" & Server.HTMLEncode( encryptedStr) & "</pre>"

%>
</body>
</html>