(Xojo Plugin) RSA Sign Using Private Key from .pfx/.p12 to Base64 Signature

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Demonstrates how to RSA sign something using a private key loaded from a .pfx/.p12. The RSA signature is returned in Base64 encoded format.

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

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

Dim rsa As New Chilkat.Rsa

// Load the .pfx/.p12
Dim pfx As New Chilkat.Pfx
Dim success As Boolean
success = pfx.LoadPfxFile("qa_data/pfx/myKey.p12","myPassword")
If (success <> True) Then
    System.DebugLog(pfx.LastErrorText)
    Return
End If

// Get the default private key.
Dim privKey As Chilkat.PrivateKey
privKey = pfx.GetPrivateKey(0)
If (pfx.LastMethodSuccess <> True) Then
    System.DebugLog(pfx.LastErrorText)
    Return
End If

// Import the private key into the RSA component:
success = rsa.ImportPrivateKeyObj(privKey)
If (success <> True) Then
    System.DebugLog(rsa.LastErrorText)

    Return
End If

// Get the signature in base64
rsa.EncodingMode = "base64"

Dim strData As String
strData = "This is the string to be signed."

// Sign the string using the sha256 hash algorithm.
// Other valid choices are "sha384", "sha512", "sha-1", "md2" and "md5".
Dim base64Sig As String
base64Sig = rsa.SignStringENC(strData,"sha256")

System.DebugLog(base64Sig)

System.DebugLog("Success!")