Visual FoxPro

Generate new DSA Key from OpenSSL Parameters File

See more DSA Examples

Generates a new DSA key from an OpenSSL-created parameters file (DER and PEM formats supported). Examples of using OpenSSL to create parameter files are shown here:

openssl dsaparam -outform DER 1024 <  seedData.txt >dsaparam.der

openssl dsaparam 1024 < seedData.txt >dsaparam.pem

Visual FoxPro

LOCAL lnSuccess
LOCAL loDsa
LOCAL lcPemStr
LOCAL lcXmlStr
LOCAL lnBPublicOnly

lnSuccess = 0

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

loDsa = CreateObject('Chilkat.Dsa')

lnSuccess = loDsa.GenKeyFromParamsDerFile("dsaparam.der")
IF (lnSuccess <> 1) THEN
    ? loDsa.LastErrorText
    RELEASE loDsa
    CANCEL
ENDIF

* To generate a key from PEM, call GenKeyFromParamsPem 
* (for an in-memory PEM string) or GenKeyFromParamsFilePem
* for a PEM file.

* The public and private keys may now be exported to PEM, DER,
* and XML formatted 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(lcPemStr,"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(lcPemStr,"dsa_priv.xml")

? "Finished!"

RELEASE loDsa