def parse(content, signature, user=None):
"""# Create single notification Event from a content string
Create a single Event object received from event listening at subscribed user endpoint.
If the provided digital signature does not check out with the StarkBank public key, a
starkbank.exception.InvalidSignatureException will be raised.
## Parameters (required):
- content [string]: response content from request received at user endpoint (not parsed)
- signature [string]: base-64 digital signature received at response header "Digital-Signature"
## Parameters (optional):
- user [Organization/Project object, default None]: Organization or Project object. Not necessary if starkbank.user was set before function call
## Return:
- Parsed Event object
"""
event = from_api_json(_resource, loads(content)["event"])
try:
signature = Signature.fromBase64(signature)
except:
raise InvalidSignatureError("The provided signature is not valid")
public_key = _get_public_key(user=user)
if _is_valid(content=content, signature=signature, public_key=public_key):
return event
public_key = _get_public_key(user=user, refresh=True)
if _is_valid(content=content, signature=signature, public_key=public_key):
return event
raise InvalidSignatureError(
"The provided signature and content do not match the Stark Bank public key"
)
def testBase64Conversion(self):
privateKey = PrivateKey()
message = "This is a text message"
signature1 = Ecdsa.sign(message, privateKey)
base64 = signature1.toBase64()
signature2 = Signature.fromBase64(base64)
self.assertEqual(signature1.r, signature2.r)
self.assertEqual(signature1.s, signature2.s)
def testBase64Conversion(self):
privateKey = PrivateKey()
message = "This is a text message"
signature1 = Ecdsa.sign(message, privateKey)
base64 = signature1.toBase64(withRecoveryId=True)
signature2 = Signature.fromBase64(base64, recoveryByte=True)
self.assertEqual(signature1.r, signature2.r)
self.assertEqual(signature1.s, signature2.s)
self.assertEqual(signature1.recoveryId, signature2.recoveryId)
def testMany(self):
for _ in range(1000):
privateKey1 = PrivateKey()
publicKey1 = privateKey1.publicKey()
privateKeyPem = privateKey1.toPem()
publicKeyPem = publicKey1.toPem()
privateKey2 = PrivateKey.fromPem(privateKeyPem)
publicKey2 = PublicKey.fromPem(publicKeyPem)
message = "test"
signatureBase64 = Ecdsa.sign(message=message,
privateKey=privateKey2).toBase64()
signature = Signature.fromBase64(signatureBase64)
self.assertTrue(
Ecdsa.verify(message=message,
signature=signature,
publicKey=publicKey2))
def TestOneInput(input_bytes):
fdp = atheris.FuzzedDataProvider(input_bytes)
privateKey1 = PrivateKey()
publicKey1 = privateKey1.publicKey()
privateKeyPem = privateKey1.toPem()
publicKeyPem = publicKey1.toPem()
privateKey2 = PrivateKey.fromPem(privateKeyPem)
publicKey2 = PublicKey.fromPem(publicKeyPem)
message = fdp.ConsumeUnicode(sys.maxsize)
signatureBase64 = Ecdsa.sign(message=message,
privateKey=privateKey2).toBase64()
signature = Signature.fromBase64(signatureBase64)
assert (Ecdsa.verify(message=message,
signature=signature,
publicKey=publicKey2))