Chilkat Examples

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Visual FoxPro Examples

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(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-----

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

LOCAL loDsa
LOCAL lnSuccess
LOCAL lcPemStr
LOCAL lcXmlStr
LOCAL lnBPublicOnly

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

loDsa = CreateObject('Chilkat_9_5_0.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.
lnSuccess = loDsa.GenKey(2048)
IF (lnSuccess <> 1) THEN
    ? loDsa.LastErrorText
    RELEASE loDsa
    CANCEL
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")

? "Finished!"

RELEASE loDsa


 

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