penpot/backend/test/resources/sns-test-cert.pem
Andrey Antukh a4b9ccee8b 🐛 Fix SNS signature verification field sets per AWS spec
Address critical code review findings:

- Remove 'Signature' field from string-to-sign (it's the output, not input)
- Differentiate V1 vs V2 field sets per AWS SNS documentation:
  - V1 Notification: Message, MessageId, Subject, Timestamp, TopicArn, Type
  - V1 SubscriptionConfirmation: adds Token, SubscribeURL (excludes SigningCertURL, SignatureVersion)
  - V2 Notification/Subscription: all fields except Signature
- Add 'Token' field to SubscriptionConfirmation (required by AWS spec)
- Add AWS documentation URL comments for future reference
- Improve error handling in fetch-certificate and verify-signature
- Add end-to-end signature verification tests with real key pairs
- Add test resources (certificate and private key) for signature tests

See: https://docs.aws.amazon.com/sns/latest/dg/sns-verify-signature-of-message.html

Closes #11092

AI-assisted-by: qwen3.7-plus
2026-08-05 16:00:09 +00:00

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-----BEGIN CERTIFICATE-----
MIIDGDCCAgCgAwIBAgIJAMp8qfcfOi+AMA0GCSqGSIb3DQEBDAUAMDoxCzAJBgNV
BAYTAlVTMQ0wCwYDVQQHEwRUZXN0MQ0wCwYDVQQKEwRUZXN0MQ0wCwYDVQQDEwRU
ZXN0MB4XDTI2MDgwNTE1NTQxN1oXDTI3MDgwNTE1NTQxN1owOjELMAkGA1UEBhMC
VVMxDTALBgNVBAcTBFRlc3QxDTALBgNVBAoTBFRlc3QxDTALBgNVBAMTBFRlc3Qw
ggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDj18ep0Pm5Y8VdXOSH9kXv
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sf8ZOxOO9SGAk8Tg5Ey8aCdL5BU05OF8PNClOuqhHdGKShul3n2Pgojb2yGBHTYB
AgMBAAGjITAfMB0GA1UdDgQWBBTQbRwLjgbx/S7j1S/QFNB5HakDEjANBgkqhkiG
9w0BAQwFAAOCAQEAklxu68LkEdTFthA/ASyzm7KNxiWw+k+9IaEcViuwVa3XR2Ly
cO3L00NznsctwtcbevIT6ZlaK454snnpc5qZWHZSTYjQP34svT+XUZkgT29JdiYe
r5so+cUdorJyngMAen/tzpAHXV2l9SbRsi5+fRkR8DjPv9Ctz+kmh/Oy5fF3x/nu
AVZiwO8Oq4M3r+ElEfFed+9MkIQ6OZ3+ezgRhJYlXzVzii1OYQYpndocGNB+Jgwy
1FqzP1/02dzT6Oz95Md3B9fxj0OSCpCCBMo3ihkOKuNixaqyQ2+n/06Y+qpvnfuM
YrXnhbdpH7hsJM0/xNjWJMQlP04+zr1CQ9V9tg==
-----END CERTIFICATE-----