Xojo Plugin

RSA Sign Using Private Key from .pfx/.p12 to Base64 Signature

See more RSA Examples

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

Dim success As Boolean
success = False

// 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
success = pfx.LoadPfxFile("qa_data/pfx/myKey.p12","myPassword")
If (success = False) Then
    System.DebugLog(pfx.LastErrorText)
    Return
End If

// Get the default private key.

Dim privKey As New Chilkat.PrivateKey
success = pfx.PrivateKeyAt(0,privKey)
If (success = False) Then
    System.DebugLog(pfx.LastErrorText)
    Return
End If

// Import the private key into the RSA component:
success = rsa.UsePrivateKey(privKey)
If (success = False) 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!")