PowerBuilder

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-----

PowerBuilder

integer li_rc
long li_Success
oleobject loo_Dsa
string ls_PemStr
string ls_XmlStr
long li_BPublicOnly

li_Success = 0

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

loo_Dsa = create oleobject
li_rc = loo_Dsa.ConnectToNewObject("Chilkat.Dsa")
if li_rc < 0 then
    destroy loo_Dsa
    MessageBox("Error","Connecting to COM object failed")
    return
end if

//  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.
li_Success = loo_Dsa.GenKey(2048)
if li_Success <> 1 then
    Write-Debug loo_Dsa.LastErrorText
    destroy loo_Dsa
    return
end if

//  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:
ls_PemStr = loo_Dsa.ToPublicPem()
//  This example will not check the return value of SaveText...
li_Success = loo_Dsa.SaveText(ls_PemStr,"dsa_pub.pem")

//  Save the public key in DER format:
li_Success = loo_Dsa.ToPublicDerFile("dsa_pub.der")

li_BPublicOnly = 1
//  Save to XML
ls_XmlStr = loo_Dsa.ToXml(li_BPublicOnly)
li_Success = loo_Dsa.SaveText(ls_XmlStr,"dsa_pub.xml")

//  ------------------------------------
//  Now for the private key....
//  ------------------------------------

//  Unencrypted PEM:
ls_PemStr = loo_Dsa.ToPem()
li_Success = loo_Dsa.SaveText(ls_PemStr,"dsa_priv.pem")

//  Encrypted PEM:
ls_PemStr = loo_Dsa.ToEncryptedPem("myPassword")
li_Success = loo_Dsa.SaveText(ls_PemStr,"dsa_privEncrypted.pem")

//  DER:
li_Success = loo_Dsa.ToDerFile("dsa_priv.der")

//  XML:
li_BPublicOnly = 0
ls_XmlStr = loo_Dsa.ToXml(li_BPublicOnly)
li_Success = loo_Dsa.SaveText(ls_XmlStr,"dsa_priv.xml")

Write-Debug "Finished!"


destroy loo_Dsa