(Visual Basic 6.0) Generate RSA Public/Private Key Pair and Export to PEM

Visual Basic 6.0 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

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

Dim rsa As New ChilkatRsa

' Generate a 1024-bit key.  Chilkat RSA supports
' key sizes ranging from 512 bits to 4096 bits.
Dim success As Long
success = rsa.GenerateKey(1024)
If (success <> 1) Then
    Debug.Print rsa.LastErrorText
    Exit Sub
End If

' Keys are exported in XML format:
Dim publicKeyXml As String
publicKeyXml = rsa.ExportPublicKey()
Debug.Print publicKeyXml

Dim privateKeyXml As String
privateKeyXml = rsa.ExportPrivateKey()
Debug.Print privateKeyXml

' Save the private key in PEM format:
Dim privKey As New PrivateKey
success = privKey.LoadXml(privateKeyXml)
success = privKey.SavePemFile("privateKey.pem")

' Save the public key in PEM format:
Dim pubKey As New PublicKey
success = pubKey.LoadFromString(publicKeyXml)
success = pubKey.SavePemFile(0,"publicKey.pem")