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(AutoIt) Working with PEM Encrypted Private KeysDemonstrates how to load and save PEM encrypted private keys. Note: This example requires Chilkat v11.0.0 or greater.
Local $bSuccess = False ; This example assumes the Chilkat API to have been previously unlocked. ; See Global Unlock Sample for sample code. $bSuccess = False $oPem = ObjCreate("Chilkat.Pem") Local $sPemPassword = "secret" ; To load a PEM file containing encrypted private keys, simply ; provide the password. $bSuccess = $oPem.LoadPemFile("/Users/chilkat/testData/pem/pemContainingEncryptedPrivateKeys.pem",$sPemPassword) If ($bSuccess = False) Then ConsoleWrite($oPem.LastErrorText & @CRLF) Exit EndIf $oFac = ObjCreate("Chilkat.FileAccess") Local $sPemText = $oFac.ReadEntireTextFile("/Users/chilkat/testData/pem/pemContainingEncryptedPrivateKeys.pem",$sPemPassword) ; To load a PEM from a string, call LoadPem instead of LoadPemFile: $bSuccess = $oPem.LoadPem($sPemText) If ($bSuccess = False) Then ConsoleWrite($oPem.LastErrorText & @CRLF) Exit EndIf ; 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: Local $i Local $iNumPrivateKeys = $oPem.NumPrivateKeys If ($iNumPrivateKeys = 0) Then ConsoleWrite((("Error: Expected the PEM to contain private keys.")) & @CRLF) Exit EndIf $oPrivKey = ObjCreate("Chilkat.PrivateKey") For $i = 1 To $iNumPrivateKeys $oPem.PrivateKeyAt($i - 1,$oPrivKey) ConsoleWrite($i & ": " & $oPrivKey.BitLength & " bits" & @CRLF) Next |
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