(Xojo Plugin) Generate an RSA Key and Get as Base64 DER

Demonstrates how to generate a 2048-bit RSA key and return the public and private parts as unencrypted Base64 encoded DER.

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

// Generate a 2048-bit key.  Chilkat RSA supports
Dim success As Boolean
success = rsa.GenerateKey(2048)
If (success <> True) Then
    System.DebugLog(rsa.LastErrorText)
    Return
End If

// Get the public part of the key.
Dim pubKey As Chilkat.PublicKey
pubKey = rsa.ExportPublicKeyObj()

// There are two possible formats for representing the RSA public key 
// in ASN.1 (DER).  The possible formats are PKCS1 and PKCS8.
// We can get either by setting bChoosePkcs1 to True or False.
Dim bChoosePkcs1 As Boolean
bChoosePkcs1 = True
Dim pubKeyBase64Der As String
pubKeyBase64Der = pubKey.GetEncoded(bChoosePkcs1,"base64")
System.DebugLog("Public Key Base64 DER:")
System.DebugLog(pubKeyBase64Der)

// Now get the private key as Base64 DER:
// Get the private part of the key.
// (Note: A public key is actually just a subset of the private key.  
//  If you have the private key, you also have the public key.
//  Thus Chilkat provides a method to get the public key from the private key.)
Dim privKey As Chilkat.PrivateKey
privKey = rsa.ExportPrivateKeyObj()

// Again, we can get PKCS1 or PKCS8, but with different methods:
Dim privKeyPkcs1 As String
privKeyPkcs1 = privKey.GetPkcs1ENC("base64")
System.DebugLog("Private Key PKCS1 Base64 DER:")
System.DebugLog(privKeyPkcs1)

Dim privKeyPkcs8 As String
privKeyPkcs8 = privKey.GetPkcs8ENC("base64")
System.DebugLog("Private Key PKCS8 Base64 DER:")
System.DebugLog(privKeyPkcs8)