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from cryptography.exceptions import InvalidSignature
from cryptography.hazmat.backends import default_backend
from cryptography.hazmat.primitives import hashes
from cryptography.hazmat.primitives.asymmetric import padding
from cryptography.hazmat.primitives.serialization import load_pem_private_key
from cryptography.hazmat.primitives.serialization import load_pem_public_key
from authlib.common.encoding import to_bytes
def sign_sha1(msg, rsa_private_key):
key = load_pem_private_key(
to_bytes(rsa_private_key), password=None, backend=default_backend()
)
return key.sign(msg, padding.PKCS1v15(), hashes.SHA1())
def verify_sha1(sig, msg, rsa_public_key):
key = load_pem_public_key(to_bytes(rsa_public_key), backend=default_backend())
try:
key.verify(sig, msg, padding.PKCS1v15(), hashes.SHA1())
return True
except InvalidSignature:
return False
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