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feat(WAKU2-MESSAGE): add deterministic message hashing test vectors (#577)

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Lorenzo Delgado 2023-03-02 11:58:58 +01:00 committed by GitHub
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@ -132,6 +132,38 @@ If an optional attribute, such as `meta`, is absent, the concatenation of attrib
This hashing schema is deemed appropriate for use cases where a cross-implementation deterministic hash is needed, such as message deduplication and integrity validation. The collision probability offered by this hashing schema can be considered negligible. This is due to the deterministic concatenation order of the message attributes, coupled with using a SHA-2 (256-bit) hashing algorithm.
## Test vectors
Waku message hash computation:
```
pubsub_topic = "/waku/2/default-waku/proto" (0x2f77616b752f322f64656661756c742d77616b752f70726f746f)
message.payload = 0x010203045445535405060708
message.content_topic = "/waku/2/default-content/proto" (0x2f77616b752f322f64656661756c742d636f6e74656e742f70726f746f)
message.meta = 0x73757065722d736563726574
message_hash = 0x4fdde1099c9f77f6dae8147b6b3179aba1fc8e14a7bf35203fc253ee479f135f
```
Waku message hash computation (`meta` attribute not present):
```
pubsub_topic = "/waku/2/default-waku/proto" (0x2f77616b752f322f64656661756c742d77616b752f70726f746f)
message.payload = 0x010203045445535405060708
message.content_topic = "/waku/2/default-content/proto" (0x2f77616b752f322f64656661756c742d636f6e74656e742f70726f746f)
message.meta = <not-present>
message_hash = 0x87619d05e563521d9126749b45bd4cc2430df0607e77e23572d874ed9c1aaa62
```
Waku message hash computation (`payload` length 0):
```
pubsub_topic = "/waku/2/default-waku/proto" (0x2f77616b752f322f64656661756c742d77616b752f70726f746f)
message.payload = []
message.content_topic = "/waku/2/default-content/proto" (0x2f77616b752f322f64656661756c742d636f6e74656e742f70726f746f)
message.meta = 0x73757065722d736563726574
message_hash = 0xe1a9596237dbe2cc8aaf4b838c46a7052df6bc0d42ba214b998a8bfdbe8487d6
```
# Security Considerations
## Confidentiality, integrity, and authenticity