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extremely simple wrapper around crypt(3)

Project description

pyphash is a Python extension module that wraps the C library function crypt, which performs passphrase hashing, in the simplest possible fashion. It exposes one function, named crypt, which works just like the C crypt except that it is thread safe:

>>> pyphash.crypt("swordfish", "$5e$z4x3Zlhs")
'$5$z4x3Zlhs$g7JP4M7HZw5L25Xwklbd2nQ2rfjzVGFB1SJutFnmvK4'

You have to create settings strings yourself.

This module is not intended to be used by programs that actually need to hash passphrases—if it were, it would at least also provide access to crypt_gensalt. Rather, its purpose is to be a test case for the packaging toolchain for C extension modules. Linux distributions are changing how they provide the shared library that implements crypt, and Python packaging must adapt. See manylinux bug #305 for the gory details.

For thread safety, the module actually uses the reentrant variant of crypt called crypt_r, and looks for it in crypt.h rather than unistd.h. It will fail to compile if this function or this header is not available.

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