Reticulum/RNS/Cryptography/Provider.py

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import importlib
PROVIDER_NONE = 0x00
2022-06-08 15:03:40 +00:00
PROVIDER_INTERNAL = 0x01
PROVIDER_PYCA = 0x02
PROVIDER = PROVIDER_NONE
pyca_v = None
use_pyca = False
try:
if importlib.util.find_spec('cryptography') != None:
import cryptography
pyca_v = cryptography.__version__
v = pyca_v.split(".")
if int(v[0]) == 2:
if int(v[1]) >= 8:
use_pyca = True
elif int(v[0]) >= 3:
use_pyca = True
except Exception as e:
pass
if use_pyca:
PROVIDER = PROVIDER_PYCA
else:
PROVIDER = PROVIDER_INTERNAL
def backend():
if PROVIDER == PROVIDER_NONE:
return "none"
elif PROVIDER == PROVIDER_INTERNAL:
return "internal"
elif PROVIDER == PROVIDER_PYCA:
return "openssl, PyCA "+str(pyca_v)