from cryptography.hazmat import backends
from cryptography.hazmat.primitives.asymmetric import dsa
from cryptography.hazmat.primitives.asymmetric import ec
from cryptography.hazmat.primitives.asymmetric import rsa
from Crypto.PublicKey import DSA as pycrypto_dsa
from Crypto.PublicKey import RSA as pycrypto_rsa
from Cryptodome.PublicKey import DSA as pycryptodomex_dsa
from Cryptodome.PublicKey import RSA as pycryptodomex_rsa

# OK
dsa.generate_private_key(key_size=2048, backend=backends.default_backend())
ec.generate_private_key(curve=ec.SECP384R1, backend=backends.default_backend())
rsa.generate_private_key(
    public_exponent=65537, key_size=2048, backend=backends.default_backend()
)
pycrypto_dsa.generate(bits=2048)
pycrypto_rsa.generate(bits=2048)
pycryptodomex_dsa.generate(bits=2048)
pycryptodomex_rsa.generate(bits=2048)
dsa.generate_private_key(2048, backends.default_backend())
ec.generate_private_key(ec.SECP256K1, backends.default_backend())
rsa.generate_private_key(3, 2048, backends.default_backend())
pycrypto_dsa.generate(2048)
pycrypto_rsa.generate(2048)
pycryptodomex_dsa.generate(2048)
pycryptodomex_rsa.generate(2048)

# Errors
dsa.generate_private_key(key_size=2047, backend=backends.default_backend())
ec.generate_private_key(curve=ec.SECT163R2, backend=backends.default_backend())
rsa.generate_private_key(
    public_exponent=65537, key_size=2047, backend=backends.default_backend()
)
pycrypto_dsa.generate(bits=2047)
pycrypto_rsa.generate(bits=2047)
pycryptodomex_dsa.generate(bits=2047)
pycryptodomex_rsa.generate(bits=2047)
dsa.generate_private_key(2047, backends.default_backend())
ec.generate_private_key(ec.SECT163R2, backends.default_backend())
rsa.generate_private_key(3, 2047, backends.default_backend())
pycrypto_dsa.generate(2047)
pycrypto_rsa.generate(2047)
pycryptodomex_dsa.generate(2047)
pycryptodomex_rsa.generate(2047)

# Don't crash when the size is variable.
rsa.generate_private_key(
    public_exponent=65537, key_size=some_key_size, backend=backends.default_backend()
)

# Can't reliably know which curve was passed, in some cases like below.
ec.generate_private_key(
    curve=curves[self.curve]["create"](self.size), backend=backends.default_backend()
)