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Update 0008_batch_messaging.md to reflect batch hash change

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gator-boi 2022-10-27 19:43:37 +00:00 committed by Evan Gray
parent f7ad518e51
commit 7931399149
1 changed files with 3 additions and 3 deletions
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whitepapers/0008_batch_messaging.md
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@ -42,9 +42,9 @@ We will add support for two new VAA payload types to the Wormhole core contract
### VAAv2
To create a VAAv2 payload (which is eventually parsed into the `VM2` struct) an xDapp will invoke the `publishMessage` method at least one time with a nonce greater than zero. The guardian will then produce a VAAv2 payload by grouping all messages with the same `nonce` (in the same transaction) and create a batch-signature by signing the hash of all hashes of the observations:
To create a VAAv2 payload (which is eventually parsed into the `VM2` struct) an xDapp will invoke the `publishMessage` method at least one time with a nonce greater than zero. The guardian will then produce a VAAv2 payload by grouping all messages with the same `nonce` (in the same transaction) and create a batch-signature by signing the payload version (`uint8(2)` for batches) and hash of all hashes of the observations:
`hash(hash(Observation1), hash(Observation2), ...)`
`hash(version, hash(hash(Observation1), hash(Observation2), ...))`
Once the batch is signed by the guardian, the VAAv2 can be parsed and verified by calling the new Wormhole core endpoint `parseAndVerifyBatchVM`. This method parses the VAAv2 into the `VM2` struct by calling `parseBatchVM`, calls `verifyBatchVM` to verify the batch-signatures, and stores the hash of each observation in a cache when specified by the caller (for reasons explained in the **VAAv3** section of this detailed design). `verifyBatchVM` also independently computes the hash of each observation and validates that each hash is stored in the `hashes` array, which is included in the VAAv2 payload. The structure of the VAAv2 payload can be found in the **Payloads** section of this design.
@ -106,7 +106,7 @@ struct VM2 {
// Array of observation hashes
bytes32[] hashes;
// Computed Batch Hash - hash(hash(Observation1), hash(Observation2), ...)
// Computed Batch Hash - `hash(version, hash(hash(Observation1), hash(Observation2), ...))`
bytes32 hash;
// Array of observation bytes with prepended version 3