(Xojo Plugin) RSASSA-PSS Algorithm with SHA256 Hashing

RSA encrypt a SHA256 hash with OAEP padding.

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

Chilkat Xojo Plugin Download Xojo Plugin for Windows, Linux, Mac OS X, and ARM, ARM64

Dim success As Boolean
success = False

// 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.)
success = privkey.LoadPemFile("somePath/myPrivateKey.pem")
If (success = False) Then
    System.DebugLog(privkey.LastErrorText)
    Return
End If

Dim rsa As New Chilkat.Rsa
// Use RSA-PSS by setting PkcsPadding = False
rsa.PkcsPadding = False
// Use SHA256
rsa.OaepHash = "SHA-256"

success = rsa.UsePrivateKey(privkey)

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

Dim sigStr As String
sigStr = rsa.SignStringENC("String to be signed","SHA-256")
If (rsa.LastMethodSuccess = False) Then
    System.DebugLog(rsa.LastErrorText)
    Return
End If

System.DebugLog("Signature: " + sigStr)