Load shared library by using module ctypes of python

[knotgrass]

I build shared library by using command cd ref && make shared.
The outputs file is

ref/libpqcrystals_aes256ctr_ref.so
ref/libpqcrystals_fips202_ref.so
ref/libpqcrystals_sha2_ref.so
ref/libpqcrystals_kyber512-90s_ref.so
ref/libpqcrystals_kyber512_ref.so
ref/libpqcrystals_kyber768-90s_ref.so
ref/libpqcrystals_kyber768_ref.so
ref/libpqcrystals_kyber1024-90s_ref.so
ref/libpqcrystals_kyber1024_ref.so

After that, I using python try to open these .so file

import os
from ctypes import cdll

shared_lib    = os.path.abspath(os.path.join(__file__, '..', 'ref'))
aes256ctr     = cdll.LoadLibrary(os.path.join(shared_lib, 'libpqcrystals_aes256ctr_ref.so'    ))
fips202       = cdll.LoadLibrary(os.path.join(shared_lib, 'libpqcrystals_fips202_ref.so'      ))
sha2          = cdll.LoadLibrary(os.path.join(shared_lib, 'libpqcrystals_sha2_ref.so'         ))


try: kyber512 = cdll.LoadLibrary(os.path.join(shared_lib, 'libpqcrystals_kyber512_ref.so'))
except Exception as ex: print(ex)


try: kyber512_90s = cdll.LoadLibrary(os.path.join(shared_lib, 'libpqcrystals_kyber512-90s_ref.so'))
except Exception as ex: print(ex)


try: kyber768 = cdll.LoadLibrary(os.path.join(shared_lib, 'libpqcrystals_kyber768_ref.so'))
except Exception as ex: print(ex)


try: kyber768_90s = cdll.LoadLibrary(os.path.join(shared_lib, 'libpqcrystals_kyber768-90s_ref.so'))
except Exception as ex: print(ex)


try: kyber1024 = cdll.LoadLibrary(os.path.join(shared_lib, 'libpqcrystals_kyber1024_ref.so'))
except Exception as ex: print(ex)


try: kyber1024_90s = cdll.LoadLibrary(os.path.join(shared_lib, 'libpqcrystals_kyber1024-90s_ref.so'))
except Exception as ex: print(ex)

And i have a problem

Traceback (most recent call last):
/home/tz/Documents/KYBER/kyber_python/ref/libpqcrystals_kyber512_ref.so: undefined symbol: pqcrystals_kyber_fips202_ref_shake256
/home/tz/Documents/KYBER/kyber_python/ref/libpqcrystals_kyber512-90s_ref.so: undefined symbol: pqcrystals_kyber_aes256ctr_ref_init
/home/tz/Documents/KYBER/kyber_python/ref/libpqcrystals_kyber768_ref.so: undefined symbol: pqcrystals_kyber_fips202_ref_shake256
/home/tz/Documents/KYBER/kyber_python/ref/libpqcrystals_kyber768-90s_ref.so: undefined symbol: pqcrystals_kyber_aes256ctr_ref_init
/home/tz/Documents/KYBER/kyber_python/ref/libpqcrystals_kyber1024_ref.so: undefined symbol: pqcrystals_kyber_fips202_ref_shake256
/home/tz/Documents/KYBER/kyber_python/ref/libpqcrystals_kyber1024-90s_ref.so: undefined symbol: pqcrystals_kyber_aes256ctr_ref_init

I am new in C/C++. Please help me fix these thing.

[knotgrass]

I edited the Makefile, and It worked

[RohitArora7]

hey , i am having the same issue

File "/home/ubuntu/kyber/ref/lib/main.py", line 5, in
libkyber = ctypes.CDLL('./libpqcrystals_kyber512_ref.so')
File "/usr/lib/python3.10/ctypes/init.py", line 374, in init
self._handle = _dlopen(self._name, mode)
OSError: ./libpqcrystals_kyber512_ref.so: undefined symbol: pqcrystals_kyber_fips202_ref_shake256

for security reason , i cannot use your repo , could you please tell me , how to correct this