Xbase++

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

Xbase++

LOCAL nSuccess
LOCAL oDsa
LOCAL cPemStr
LOCAL cXmlStr
LOCAL nBPublicOnly

nSuccess := 0

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

oDsa := CreateObject("Chilkat.Dsa")

nSuccess := oDsa:GenKeyFromParamsDerFile("dsaparam.der")
IF (nSuccess != 1)
    ? oDsa:LastErrorText
    oDsa:destroy()
    RETURN
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:
cPemStr := oDsa:ToPublicPem()
//  This example will not check the return value of SaveText...
nSuccess := oDsa:SaveText(cPemStr, "dsa_pub.pem")

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

nBPublicOnly := 1
//  Save to XML
cXmlStr := oDsa:ToXml(nBPublicOnly)
nSuccess := oDsa:SaveText(cPemStr, "dsa_pub.xml")

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

//  Unencrypted PEM:
cPemStr := oDsa:ToPem()
nSuccess := oDsa:SaveText(cPemStr, "dsa_priv.pem")

//  Encrypted PEM:
cPemStr := oDsa:ToEncryptedPem("myPassword")
nSuccess := oDsa:SaveText(cPemStr, "dsa_privEncrypted.pem")

//  DER:
nSuccess := oDsa:ToDerFile("dsa_priv.der")

//  XML:
nBPublicOnly := 0
cXmlStr := oDsa:ToXml(nBPublicOnly)
nSuccess := oDsa:SaveText(cPemStr, "dsa_priv.xml")

? "Finished!"

oDsa:destroy()