Re: [pyOpenSSL] quick question, converting a small (two lines) of Ruby (OpenSSL) to PyOpenSSL

[aaron s. <bei...@gm...>]

Thanks for the reply. Ultimately what I'm trying to accomplish is
creating a software license key.

The full ruby example is this:

def make_license(product_code, name, copies)
  sign_dss1 = OpenSSL::Digest::DSS1.new
  priv = OpenSSL::PKey::DSA.new(File.read("lib/dsa_priv.pem"))
  b32 = Base32.encode(priv.sign(sign_dss1,
make_license_source(product_code, name)))
  # Replace Os with 8s and Is with 9s
  # See http://members.shaw.ca/akochoi-old/blog/2004/11-07/index.html
  b32.gsub!(/O/, '8')
  b32.gsub!(/I/, '9')
  # chop off trailing padding
  b32.delete("=").scan(/.{1,5}/).join("-")
end

def make_license_source(product_code, name)
  product_code + "," + name
end

I think what this is doing is creating a new dsa from a private one,
the file (lib/dsa_priv.pem). It converts it to base 32, and adds in
some dashes (-). Which ultimately gives me something like:
"GAWAE-FDWN3-BJHHK-KBGLL-D5SF7-6KHNP-7RWSE-C2FAC-CRR32-QB76K-T3F22-MZFGQ-LV4XA-7X423-6QJY"





On Tue, Aug 25, 2009 at 9:13 AM, Rick Dean<ri...@fd...> wrote:
>
> The automated test cases are a good place to look for
> examples.  It's a directory named "test" in the pyOpenSSL
> sources.
>
> Some comments about what you are trying to accomplish
> would be useful.  I don't know the Ruby API and you
> didn't link to it's docs.
>
> Are you trying to create a DSA certificate?  Is "test" the
> common name of the subject for the new certificate being
> created?  If so, you need a bunch more stuff than those three
> lines.  I attached an example.
>
> --
> Rick
>
>
> On Mon, Aug 24, 2009 at 10:21:02PM -0700, aaron smith wrote:
>> I'm trying to convert a small snippet of ruby code that handles some
>> ssl stuff for me..
>>
>> The Ruby code is this:
>>
>> sign_dss1 = OpenSSL::Digest::DSS1.new
>> priv = OpenSSL::PKey::DSA.new(File.read("lib/dsa_priv.pem"))
>> priv.sign(sign_dss1, "test" )
>>
>> This is somewhat contrived, but this all i'm trying to convert. The
>> docs for pyOpenSSL don't explain that much, so I'm not even sure where
>> to look.
>>
>> Thanks for your help!
>> -A
>>
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>
>