[poppler] RFC: Crypto and poppler

[Kristian Høgsberg]

Nathan Summers wrote:
> On 7/6/05, Leonard Rosenthol <leonardr at pdfsages.com> wrote:
> 
>>2) I would think that libeay (the crypto part of openssh) or libcrypt
>>(Peter Gutmann's) would be a better choices than libgcrypt, given
>>wider acceptance and usage.
> 
> 
> The libeay license is incompatible with the GPL.  At least for the
> GIMP, this is a major disadvantage.

poppler itself is GPL so the library has to be GPL compatible.  I assume 
Leonard means cryptlib

	http://www.cs.auckland.ac.nz/~pgut001/cryptlib/

which I hadn't heard of until now.  Then again, I haven't heard of a lot 
of crypto libraries, but libgcrypt is used by GnuPG which is pretty 
widespread (afaik, most linux distributions ship GnuPG).  For what it's 
worth, Fedora Core doesn't ship cryptlib, but has libgcrypt.

Also, libgcrypt is licensed under plain old LGPL, cryptlib has a custom 
license, which is said to be GPL compatible.

Unless libgcrypt doesn't provide the required functionality, I'd want a 
real good reason to go with cryptlib.

Kristian