def check_backend_available(backend_name):
try:
from pyeclib_c import check_backend_available
if backend_name.startswith('flat_xor_hd'):
int_type = PyECLib_EC_Types.get_by_name('flat_xor_hd')
else:
int_type = PyECLib_EC_Types.get_by_name(backend_name)
if not int_type:
return False
return check_backend_available(int_type.value)
except ImportError:
# check_backend_available has been supported since
# liberasurecode>=1.2.0 so we need to define the func for older
# liberasurecode version
# select available k, m values
if backend_name.startswith('flat_xor_hd'):
k, m = (10, 5)
else:
k, m = (10, 4)
try:
ECDriver(ec_type=backend_name, k=k, m=m)
except ECDriverError:
return False
return True
def check_backend_available(backend_name):
try:
from pyeclib_c import check_backend_available
if backend_name.startswith('flat_xor_hd'):
int_type = PyECLib_EC_Types.get_by_name('flat_xor_hd')
else:
int_type = PyECLib_EC_Types.get_by_name(backend_name)
if not int_type:
return False
return check_backend_available(int_type.value)
except ImportError:
# check_backend_available has been supported since
# liberasurecode>=1.2.0 so we need to define the func for older
# liberasurecode version
# select available k, m values
if backend_name.startswith('flat_xor_hd'):
k, m = (10, 5)
else:
k, m = (10, 4)
try:
ECDriver(ec_type=backend_name, k=k, m=m)
except ECDriverError:
return False
return True
def _PyECLibValidECTypes():
available_ec_types = []
for _type in ALL_EC_TYPES:
if check_backend_available(_type):
available_ec_types.append(_type)
return available_ec_types
def _PyECLibValidECTypes():
available_ec_types = []
for _type in ALL_EC_TYPES:
if check_backend_available(_type):
available_ec_types.append(_type)
return available_ec_types