(VBScript) RSA Import Public Key from Certificate PEM

Uses a certificate's public key for RSA encryption. The public key from the certificate .pem file is used.

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 cert = CreateObject("Chilkat_9_5_0.Cert")

success = cert.LoadFromFile("qa_data/pem/mf_public_rsa.pem")
If (Not success) Then
    outFile.WriteLine(cert.LastErrorText)
    WScript.Quit
End If

' pubKey is a Chilkat_9_5_0.PublicKey
Set pubKey = cert.ExportPublicKey()
If (cert.LastMethodSuccess <> 1) Then
    outFile.WriteLine(cert.LastErrorText)
    WScript.Quit
End If

set rsa = CreateObject("Chilkat_9_5_0.Rsa")
success = rsa.ImportPublicKeyObj(pubKey)
If (Not success) Then
    outFile.WriteLine(rsa.LastErrorText)
    WScript.Quit
End If

rsa.EncodingMode = "base64"
encryptedStr = rsa.EncryptStringENC("hello",0)
outFile.WriteLine("encrypted string = " & encryptedStr)

outFile.Close