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Manual Seal: Calculate the block's post hash#10498
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paritytech-processbot[bot] merged 2 commits intoparitytech:masterfrom Jan 10, 2022
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kianenigma
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JoshOrndorff
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JoshOrndorff
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| // Make sure we return the same post-hash that will be calculated when importing the block | ||
| // This is important in case the digest_provider added any signature, seal, ect. | ||
| let mut post_header = header.clone(); | ||
| post_header.digest_mut().logs.extend(params.post_digests.iter().cloned()); |
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wondering if there's any security risk to calculating the hash up front at this point rather than cloning the header and doing the hash later on?
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Why should that be a security risk?
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@JoshOrndorff what is the status of a test? |
bkchr
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Jan 10, 2022
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bot merge |
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Waiting for commit status. |
tgmichel
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Thank you @tgmichel |
tgmichel
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grishasobol
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Mar 28, 2022
* calculate the post hash * Add test Co-authored-by: tgmichel <telmo@purestake.com>
ark0f
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* calculate the post hash * Add test Co-authored-by: tgmichel <telmo@purestake.com>
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This PR fixes manual seal so that the block hash it returns to the RPC caller is the same hash that can later be used to look the block up in the database.
Previously manual seal was returning the hash of the block as was returned from the
Producer. That is to say before any signature or other kind of seal was added.This bug was caught by Moonbeam's CI, which also shows that this changes fixes it.
cc @seunlanlege