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Classic ASP Examples

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(Classic ASP) Working with PEM Encrypted Private Keys

Demonstrates how to load and save PEM encrypted private keys.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
'  Starting in v9.5.0.49, all Chilkat classes can be unlocked at once at the beginning of a program
'  by calling UnlockBundle.  It requires a Bundle unlock code.
set chilkatGlob = Server.CreateObject("Chilkat_9_5_0.Global")
success = chilkatGlob.UnlockBundle("Anything for 30-day trial.")
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( chilkatGlob.LastErrorText) & "</pre>"
    Response.End
End If

set pem = Server.CreateObject("Chilkat_9_5_0.Pem")

pemPassword = "secret"

'  To load a PEM file containing encrypted private keys, simply
'  provide the password.
success = pem.LoadPemFile("/Users/chilkat/testData/pem/pemContainingEncryptedPrivateKeys.pem",pemPassword)
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( pem.LastErrorText) & "</pre>"
    Response.End
End If

set fac = Server.CreateObject("Chilkat_9_5_0.FileAccess")
pemText = fac.ReadEntireTextFile("/Users/chilkat/testData/pem/pemContainingEncryptedPrivateKeys.pem",pemPassword)

'  To load a PEM from a string, call LoadPem instead of LoadPemFile:
success = pem.LoadPem(pemText)
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( pem.LastErrorText) & "</pre>"
    Response.End
End If

'  A few notes:
'  The PEM may contain both private keys and certificates (or anything else).
'  The password is utilized for whatever content in the PEM is encrypted.
'  It is OK to have both encrypted and non-encrypted content within a given PEM.

'  PEM private keys can be encrypted in different formats.  The LoadPem and LoadPemFile
'  methods automatically handle the different formats.
'  One format is PKCS8 and is indicated by this delimiter within the PEM:

'  -----BEGIN ENCRYPTED PRIVATE KEY-----
'  MIICoTAbBgkqhkiG9w0BBQMwDgQIfdD0zv24lgkCAggABIICgE0PdHJmRbNs6cBX
'  ...

'  Another format, we'll call "passphrase" looks like this in the PEM:
'  -----BEGIN RSA PRIVATE KEY-----
'  Proc-Type: 4,ENCRYPTED
'  DEK-Info: DES-EDE3-CBC,A4215544D11C5D0C
' 
'  paqy9XRexcSjurHfG0xhCaUD0HrvIdhuC0CbRxxxeMlkLaV6+uT80rBxt2AaibWG
'  ...

'  Show the bit length of each private key:

numPrivateKeys = pem.NumPrivateKeys
If (numPrivateKeys = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( ("Error: Expected the PEM to contain private keys.")) & "</pre>"
    Response.End
End If

For i = 1 To numPrivateKeys
    ' privKey is a Chilkat_9_5_0.PrivateKey
    Set privKey = pem.GetPrivateKey(i - 1)
    Response.Write "<pre>" & Server.HTMLEncode( i & ": " & privKey.BitLength & " bits") & "</pre>"

Next

%>
</body>
</html>

 

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