Classic ASP

RSASSA-PSS Algorithm with SHA256 Hashing

RSA encrypt a SHA256 hash with OAEP padding.

Chilkat Classic ASP Downloads

Classic ASP

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

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

set privkey = Server.CreateObject("Chilkat.PrivateKey")

' Load the private key object from a PEM file.
' (To load from a PEM string, call LoadPem instead.)
success = privkey.LoadPemFile("somePath/myPrivateKey.pem")
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( privkey.LastErrorText) & "</pre>"
    Response.End
End If

set rsa = Server.CreateObject("Chilkat.Rsa")
' Use RSA-PSS by setting PkcsPadding = 0
rsa.PkcsPadding = 0
' Use SHA256
rsa.OaepHash = "SHA-256"

success = rsa.UsePrivateKey(privkey)

' Generate a base64 signature.
rsa.EncodingMode = "base64"

sigStr = rsa.SignStringENC("String to be signed","SHA-256")
If (rsa.LastMethodSuccess = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( rsa.LastErrorText) & "</pre>"
    Response.End
End If

Response.Write "<pre>" & Server.HTMLEncode( "Signature: " & sigStr) & "</pre>"

%>
</body>
</html>