(Classic ASP) Convert PuTTY Private Key (ppk) to OpenSSH (pem)

Convert a PuTTY format private key file (.ppk) to OpenSSH (.pem).

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

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<%
' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.SshKey")
set key = Server.CreateObject("Chilkat.SshKey")

' Load an unencrypted or encrypted PuTTY private key.

' If  your PuTTY private key is encrypted, set the Password
' property before calling FromPuttyPrivateKey.
' If your PuTTY private key is not encrypted, it makes no diffference
' if Password is set or not set.
key.Password = "secret"

' First load the .ppk file into a string:

keyStr = key.LoadText("putty_private_key.ppk")

' Import into the SSH key object:
success = key.FromPuttyPrivateKey(keyStr)
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( key.LastErrorText) & "</pre>"
    Response.End
End If

' Convert to an encrypted or unencrypted OpenSSH key.

' First demonstrate converting to an unencrypted OpenSSH key

bEncrypt = 0
unencryptedKeyStr = key.ToOpenSshPrivateKey(bEncrypt)
success = key.SaveText(unencryptedKeyStr,"unencrypted_openssh.pem")
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( key.LastErrorText) & "</pre>"
    Response.End
End If

' Save to an encrypted OpenSSH PEM file:

bEncrypt = 1
key.Password = "myPassword"
encryptedKeyStr = key.ToOpenSshPrivateKey(bEncrypt)
success = key.SaveText(encryptedKeyStr,"encrypted_openssh.pem")
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( key.LastErrorText) & "</pre>"
    Response.End
End If

Response.Write "<pre>" & Server.HTMLEncode( "Done!") & "</pre>"

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