(VB.NET) RSASSA-PSS Algorithm with SHA256 Hashing

RSA encrypt a SHA256 hash with OAEP padding.

Chilkat .NET Downloads Chilkat .NET Framework Chilkat for .NET Core

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

Dim privkey As New Chilkat.PrivateKey

' Load the private key object from a PEM file.
' (To load from a PEM string, call LoadPem instead.)
Dim success As Boolean = privkey.LoadPemFile("somePath/myPrivateKey.pem")
If (success <> True) Then
    Debug.WriteLine(privkey.LastErrorText)
    Exit Sub
End If


Dim rsa As New Chilkat.Rsa
' Use RSA-PSS by setting OaepPadding = True
rsa.OaepPadding = True
' Use SHA256
rsa.OaepHash = "SHA-256"

rsa.ImportPrivateKeyObj(privkey)

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

Dim sigStr As String = rsa.SignStringENC("String to be signed","SHA-256")
If (rsa.LastMethodSuccess <> True) Then
    Debug.WriteLine(rsa.LastErrorText)
    Exit Sub
End If


Debug.WriteLine("Signature: " & sigStr)