async def verify_signed_dictionary(
public_key: rsa.RSAPublicKey,
signature: bytes,
dictionary: Dict[str, Any],
) -> None:
"""
Returns None if success,
else throws cryptography.exceptions.InvalidSignature
:param public_key: RSA public_key
:param signature: the signature of the dictionary
:param dictionary: the actual dictionary
:raises VerificationException: If the verification fails
:return: None
"""
verifier = public_key.verifier(
signature,
padding.PSS(
mgf=padding.MGF1(hashes.SHA256()),
salt_length=padding.PSS.MAX_LENGTH,
),
hashes.SHA256(),
)
verifier.update(await hash(bencode.encode(dictionary)))
try:
verifier.verify()
except InvalidSignature:
raise VerificationException()
def pk_verify(message: bytes, public_key: rsa.RSAPublicKey,
signature: bytes) -> bool:
"""
Verify a message signature created with RSASSA-PSS.
"""
verifier = public_key.verifier(signature,
padding.PSS(padding.MGF1(hashes.SHA256()), padding.PSS.MAX_LENGTH),
hashes.SHA256())
verifier.update(message)
try:
verifier.verify()
return True
except exceptions.InvalidSignature:
return False
def pk_verify(message: bytes, public_key: rsa.RSAPublicKey,
signature: bytes) -> bool:
"""
Verify a message signature created with RSASSA-PSS.
"""
verifier = public_key.verifier(
signature,
padding.PSS(padding.MGF1(hashes.SHA256()), padding.PSS.MAX_LENGTH),
hashes.SHA256())
verifier.update(message)
try:
verifier.verify()
return True
except exceptions.InvalidSignature:
return False
