(VBScript) Generate RSA Key and return Base64 PKCS8 Private Key

Demonstrates how to generate a new 2048-bit RSA private key and returns the Base64 encoded PKCS8 representation of the private key.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
Set outFile = fso.CreateTextFile("output.txt", True)

set rsa = CreateObject("Chilkat_9_5_0.Rsa")

'  Generate a 2048-bit key.  Chilkat RSA supports
'  key sizes ranging from 512 bits to 8192 bits.
success = rsa.GenerateKey(2048)
If (success <> 1) Then
    outFile.WriteLine(rsa.LastErrorText)
    WScript.Quit
End If

' privKey is a Chilkat_9_5_0.PrivateKey
Set privKey = rsa.ExportPrivateKeyObj()

'  Get the private key in PKCS8 Base64 format
privKeyPkcs8Base64 = privKey.GetPkcs8ENC("base64")

'  The key in base64 format will start similar to this:
'  MIIEvAIBADANBgkqhkiG9w0BA...
outFile.WriteLine(privKeyPkcs8Base64)

outFile.Close