AutoIt

DSA Generate Key

See more DSA Examples

Generates a DSA public/private key pair and saves to PEM and DER file formats (both encrypted and non-encrypted).

An encrypted DSA PEM looks like this:

-----BEGIN DSA PRIVATE KEY-----
Proc-Type: 4,ENCRYPTED
DEK-Info: DES-EDE3-CBC,9DAFD5C4CD62A5D0

QwDdp66sB0qKXQli7FbVcKL/eo3wu7kGRlV2sI8XbkNa1RTLiwnwTWDB0dqyWRQ8
...
Bx0HVfxKiNgCbL6BQEnYD+GOmMcckuj9Uhgloe/YuXCIDJBGhjUt/li3hvR/PXeC

V2xxNl1XKBE88njqi+UXt4vjGVNLpvXM
-----END DSA PRIVATE KEY-----

AutoIt

Local $bSuccess = False

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

$oDsa = ObjCreate("Chilkat.Dsa")

;  Call GenKey to generate a new DSA key.
;  The number of bits should be at least 1024 and a multiple
;  of 64.   Typical values are either 1024 or 2048.
;  DSA key generation is compute intensive and may take
;  a short while to complete.
$bSuccess = $oDsa.GenKey(2048)
If ($bSuccess <> True) Then
    ConsoleWrite($oDsa.LastErrorText & @CRLF)
    Exit
EndIf

;  Extract the private and public parts to PEM or DER format
;  and save to files...
Local $sPemStr
Local $sXmlStr

;  First for the public key...
;  The public key never needs to be encrypted.

;  Save the public key in PEM format:
$sPemStr = $oDsa.ToPublicPem()
;  This example will not check the return value of SaveText...
$bSuccess = $oDsa.SaveText($sPemStr,"dsa_pub.pem")

;  Save the public key in DER format:
$bSuccess = $oDsa.ToPublicDerFile("dsa_pub.der")

Local $bPublicOnly = True
;  Save to XML
$sXmlStr = $oDsa.ToXml($bPublicOnly)
$bSuccess = $oDsa.SaveText($sXmlStr,"dsa_pub.xml")

;  ------------------------------------
;  Now for the private key....
;  ------------------------------------

;  Unencrypted PEM:
$sPemStr = $oDsa.ToPem()
$bSuccess = $oDsa.SaveText($sPemStr,"dsa_priv.pem")

;  Encrypted PEM:
$sPemStr = $oDsa.ToEncryptedPem("myPassword")
$bSuccess = $oDsa.SaveText($sPemStr,"dsa_privEncrypted.pem")

;  DER:
$bSuccess = $oDsa.ToDerFile("dsa_priv.der")

;  XML:
$bPublicOnly = False
$sXmlStr = $oDsa.ToXml($bPublicOnly)
$bSuccess = $oDsa.SaveText($sXmlStr,"dsa_priv.xml")

ConsoleWrite("Finished!" & @CRLF)