Generate new DSA Key from OpenSSL Parameters File

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

 Chilkat Python Module Downloads for Windows, Linux, and MAC OS X

import sys
import chilkat



dsa = chilkat.CkDsa()

success = dsa.UnlockComponent("Anything for 30-day trial")
if (success != True):
    print dsa.lastErrorText()
    sys.exit()

success = dsa.GenKeyFromParamsDerFile("dsaparam.der")
if (success != True):
    print dsa.lastErrorText()
    sys.exit()

#  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:
pemStr = dsa.toPublicPem()
#  This example will not check the return value of SaveText...
success = dsa.SaveText(pemStr,"dsa_pub.pem")

#  Save the public key in DER format:
success = dsa.ToPublicDerFile("dsa_pub.der")

bPublicOnly = True
#  Save to XML
xmlStr = dsa.toXml(bPublicOnly)
success = dsa.SaveText(pemStr,"dsa_pub.xml")

#  ------------------------------------
#  Now for the private key....
#  ------------------------------------

#  Unencrypted PEM:
pemStr = dsa.toPem()
success = dsa.SaveText(pemStr,"dsa_priv.pem")

#  Encrypted PEM:
pemStr = dsa.toEncryptedPem("myPassword")
success = dsa.SaveText(pemStr,"dsa_privEncrypted.pem")

#  DER:
success = dsa.ToDerFile("dsa_priv.der")

#  XML:
bPublicOnly = False
xmlStr = dsa.toXml(bPublicOnly)
success = dsa.SaveText(pemStr,"dsa_priv.xml")

print "Finished!"