Philipp Wagner wrote:
> Leonard Rosenthol schrieb:
>> crypto++ would be useful for standard crypto, but wouldn't help with  
>> DigSig or Signature-based crypto.
>>
>> Try libeay (part of openssl).
> 
> Don't use openssl as it will give you licence problems with 
> distributions like debian (happened with aqbanking a while ago, see 
> http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=340564).

PoDoFo is licensed under the LGPL. As far as I know there are no issues 
with using OpenSSL libraries with an LGPL program/library. The issues 
arise with full GPL code. I haven't found detailed confirmation of that 
though and I'm not going to attempt wading through the licenses just yet.

While GnuTLS seeks to be compatible with OpenSSL, does it try to expose 
the same lower level functionality available from libeay? It's 
thankfully switched to LGPL now (it started out as GPL) so it might be 
an option if it does.

--
Craig Ringer

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