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updating python demo syntax. #73

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updating python demo syntax. #73

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23 changes: 10 additions & 13 deletions docs/webhooks/04-Signatures.md
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Original file line number Diff line number Diff line change
Expand Up @@ -60,25 +60,22 @@ import hmac
import hashlib
​
​class PagerDutyVerifier:
def __init__(self, key, version):
def __init__(self, key: str, version: str) -> None:
self.key = key
self.version = version
​
def verify(self, payload, signatures):
comparisons = []

def verify(self, payload, signatures) -> bool:
byte_key = self.key.encode("ASCII")
signature = hmac.new(byte_key, payload.encode(), hashlib.sha256).hexdigest()
signatureWithVersion = self.version + "=" + signature
signatureList = signatures.split(",")
​
for _signature in signatureList:
comparisons.append(hmac.compare_digest(signatureWithVersion, _signature))
​
return any(comparisons)
signed_version = self.version + "=" + signature
signatures = signatures.split(",")

# Return boolean indicating whether signed version is legitimate.
return any(hmac.compare_digest(signed_version, item) for item in signatures)
​
​
pagerdutyVerifier = PagerDutyVerifier(key, version)
pagerdutyVerifier.verify(payload, signatures)
pagerduty_verifier = PagerDutyVerifier(key, version)
pagerduty_verifier.verify(payload, signatures)

```

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