Convert DSA PEM Private Key to DER

Converts a DSA private key from PEM format to DER. The first part of the example will convert an unencrypted PEM to DER, then 2nd part will convert an encrypted PEM to unencrypted DER.

Downloads for Windows/Linux and Install Instructions

require 'rubygems'
require 'chilkat'



dsa = Chilkat::CkDsa.new()

success = dsa.UnlockComponent("Anything for 30-day trial")
if (success != true)
    print dsa.lastErrorText() + "\n"
    exit
end

#  Load a PEM private key.

pemPrivateKey = dsa.loadText("dsa_priv.pem")
#  Import the unencrypted PEM into the DSA object.
success = dsa.FromPem(pemPrivateKey)
if (success != true)
    print dsa.lastErrorText() + "\n"
    exit
end

#  Write it out as a DER file:
success = dsa.ToDerFile("dsa_priv.der")
if (success != true)
    print dsa.lastErrorText() + "\n"
    exit
end

#  Load an encrypted PEM private key.
pemPrivateKey = dsa.loadText("dsa_privEncrypted.pem")
#  Import the encrypted PEM into the DSA object.
success = dsa.FromEncryptedPem("myPassword",pemPrivateKey)
if (success != true)
    print dsa.lastErrorText() + "\n"
    exit
end

#  Write it out as an unencrypted DER file:
success = dsa.ToDerFile("dsa_priv2.der")
if (success != true)
    print dsa.lastErrorText() + "\n"
    exit
end

print "Finished!" + "\n"