(Visual FoxPro) DSA Generate Key

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-----

Download Chilkat DSA ActiveX

LOCAL lnSuccess
LOCAL loDsa
LOCAL lcPemStr
LOCAL lcXmlStr
LOCAL lnBPublicOnly



loDsa = CreateObject('Chilkat.Dsa')

lnSuccess = loDsa.UnlockComponent("Anything for 30-day trial")
IF (lnSuccess <> 1) THEN
    =MESSAGEBOX(loDsa.LastErrorText)
    QUIT
ENDIF

*  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.
lnSuccess = loDsa.GenKey(2048)
IF (lnSuccess <> 1) THEN
    =MESSAGEBOX(loDsa.LastErrorText)
    QUIT
ENDIF

*  Extract the private and public parts to PEM or DER format
*  and save to files...

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

*  Save the public key in PEM format:
lcPemStr = loDsa.ToPublicPem()
*  This example will not check the return value of SaveText...
lnSuccess = loDsa.SaveText(lcPemStr,"dsa_pub.pem")

*  Save the public key in DER format:
lnSuccess = loDsa.ToPublicDerFile("dsa_pub.der")

lnBPublicOnly = 1
*  Save to XML
lcXmlStr = loDsa.ToXml(lnBPublicOnly)
lnSuccess = loDsa.SaveText(lcXmlStr,"dsa_pub.xml")

*  ------------------------------------
*  Now for the private key....
*  ------------------------------------

*  Unencrypted PEM:
lcPemStr = loDsa.ToPem()
lnSuccess = loDsa.SaveText(lcPemStr,"dsa_priv.pem")

*  Encrypted PEM:
lcPemStr = loDsa.ToEncryptedPem("myPassword")
lnSuccess = loDsa.SaveText(lcPemStr,"dsa_privEncrypted.pem")

*  DER:
lnSuccess = loDsa.ToDerFile("dsa_priv.der")

*  XML:
lnBPublicOnly = 0
lcXmlStr = loDsa.ToXml(lnBPublicOnly)
lnSuccess = loDsa.SaveText(lcXmlStr,"dsa_priv.xml")

=MESSAGEBOX("Finished!")