(VBScript) Generate RSA Public/Private Key Pair and Export to PEM

VBScript example code showing how to generate an RSA public/private key pair and export to PEM files.

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

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
'Create a Unicode (utf-16) output text file.
Set outFile = fso.CreateTextFile("output.txt", True, True)

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

' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.Rsa")
set rsa = CreateObject("Chilkat.Rsa")

' Generate a 1024-bit key.  Chilkat RSA supports
' key sizes ranging from 512 bits to 4096 bits.
success = rsa.GenerateKey(1024)
If (success <> 1) Then
    outFile.WriteLine(rsa.LastErrorText)
    WScript.Quit
End If

' Keys are exported in XML format:
publicKeyXml = rsa.ExportPublicKey()
outFile.WriteLine(publicKeyXml)

privateKeyXml = rsa.ExportPrivateKey()
outFile.WriteLine(privateKeyXml)

' Save the private key in PEM format:
' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.PrivateKey")
set privKey = CreateObject("Chilkat.PrivateKey")
success = privKey.LoadXml(privateKeyXml)
success = privKey.SavePemFile("privateKey.pem")

' Save the public key in PEM format:
' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.PublicKey")
set pubKey = CreateObject("Chilkat.PublicKey")
success = pubKey.LoadFromString(publicKeyXml)
success = pubKey.SavePemFile(0,"publicKey.pem")

outFile.Close