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chore: update Deterministic message hashing algorithm. (#632) 

* chores: update Deterministic message hashing algorithm.

* type fix in commented code
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Abhimanyu 2023-11-15 10:33:59 +01:00 committed by GitHub
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@ -10,6 +10,7 @@ contributors:
- Sanaz Taheri <sanaz@status.im> - Sanaz Taheri <sanaz@status.im>
- Aaryamann Challani <aaryamann@status.im> - Aaryamann Challani <aaryamann@status.im>
- Lorenzo Delgado <lorenzo@status.im> - Lorenzo Delgado <lorenzo@status.im>
- Abhimanyu Rawat <abhi@status.im>
--- ---
# Abstract # Abstract
@ -125,7 +126,7 @@ It is also unstable across different builds with schema changes due to unknown f
To overcome this interoperability limitation, a Waku v2 message's hash MUST be computed following this schema: To overcome this interoperability limitation, a Waku v2 message's hash MUST be computed following this schema:
``` ```
message_hash = sha256(concat(pubsub_topic, message.payload, message.content_topic, message.meta)) message_hash = sha256(concat(pubsub_topic, message.payload, message.content_topic, message.meta, message.timestamp))
``` ```
If an optional attribute, such as `meta`, is absent, the concatenation of attributes SHOULD exclude it. This recommendation is made to ensure that the concatenation process proceeds smoothly when certain attributes are missing and to maintain backward compatibility. If an optional attribute, such as `meta`, is absent, the concatenation of attributes SHOULD exclude it. This recommendation is made to ensure that the concatenation process proceeds smoothly when certain attributes are missing and to maintain backward compatibility.
@ -140,8 +141,9 @@ pubsub_topic = "/waku/2/default-waku/proto" (0x2f77616b752f322f64656661756c742d7
message.payload = 0x010203045445535405060708 message.payload = 0x010203045445535405060708
message.content_topic = "/waku/2/default-content/proto" (0x2f77616b752f322f64656661756c742d636f6e74656e742f70726f746f) message.content_topic = "/waku/2/default-content/proto" (0x2f77616b752f322f64656661756c742d636f6e74656e742f70726f746f)
message.meta = 0x73757065722d736563726574 message.meta = 0x73757065722d736563726574
message.timestamp = 0x175789bfa23f8400
message_hash = 0x4fdde1099c9f77f6dae8147b6b3179aba1fc8e14a7bf35203fc253ee479f135f message_hash = 0x64cce733fed134e83da02b02c6f689814872b1a0ac97ea56b76095c3c72bfe05
``` ```
Waku message hash computation (`meta` size of 64 bytes): Waku message hash computation (`meta` size of 64 bytes):
@ -151,8 +153,9 @@ pubsub_topic = "/waku/2/default-waku/proto" (0x2f77616b752f322f64656661756c742d7
message.payload = 0x010203045445535405060708 message.payload = 0x010203045445535405060708
message.content_topic = "/waku/2/default-content/proto" (0x2f77616b752f322f64656661756c742d636f6e74656e742f70726f746f) message.content_topic = "/waku/2/default-content/proto" (0x2f77616b752f322f64656661756c742d636f6e74656e742f70726f746f)
message.meta = 0x000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f303132333435363738393a3b3c3d3e3f message.meta = 0x000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f303132333435363738393a3b3c3d3e3f
message.timestamp = 0x175789bfa23f8400
message_hash = 0xc32ed3b51f0c432be1c7f50880110e1a1a60f6067cd8193ca946909efe1b26ad message_hash = 0x7158b6498753313368b9af8f6e0a0a05104f68f972981da42a43bc53fb0c1b27
``` ```
Waku message hash computation (`meta` attribute not present): Waku message hash computation (`meta` attribute not present):
@ -161,8 +164,9 @@ pubsub_topic = "/waku/2/default-waku/proto" (0x2f77616b752f322f64656661756c742d7
message.payload = 0x010203045445535405060708 message.payload = 0x010203045445535405060708
message.content_topic = "/waku/2/default-content/proto" (0x2f77616b752f322f64656661756c742d636f6e74656e742f70726f746f) message.content_topic = "/waku/2/default-content/proto" (0x2f77616b752f322f64656661756c742d636f6e74656e742f70726f746f)
message.meta = <not-present> message.meta = <not-present>
message.timestamp = 0x175789bfa23f8400
message_hash = 0x87619d05e563521d9126749b45bd4cc2430df0607e77e23572d874ed9c1aaa62 message_hash = 0xa2554498b31f5bcdfcbf7fa58ad1c2d45f0254f3f8110a85588ec3cf10720fd8
``` ```
Waku message hash computation (`payload` length 0): Waku message hash computation (`payload` length 0):
@ -171,8 +175,9 @@ pubsub_topic = "/waku/2/default-waku/proto" (0x2f77616b752f322f64656661756c742d7
message.payload = [] message.payload = []
message.content_topic = "/waku/2/default-content/proto" (0x2f77616b752f322f64656661756c742d636f6e74656e742f70726f746f) message.content_topic = "/waku/2/default-content/proto" (0x2f77616b752f322f64656661756c742d636f6e74656e742f70726f746f)
message.meta = 0x73757065722d736563726574 message.meta = 0x73757065722d736563726574
message.timestamp = 0x175789bfa23f8400
message_hash = 0xe1a9596237dbe2cc8aaf4b838c46a7052df6bc0d42ba214b998a8bfdbe8487d6 message_hash = 0x483ea950cb63f9b9d6926b262bb36194d3f40a0463ce8446228350bd44e96de4
``` ```
# Security Considerations # Security Considerations