[bitcoin] practicalswift opened pull request #16143: tests: Mark unit test blockfilter_index_initial_sync as non-deterministic (master...non-determinism-in-blockfilter_index_initial_sync) https://github.com/bitcoin/bitcoin/pull/16143
sipa: you once wrote some thoughts on an authentication scheme on top of the v2 encryption,... can't find that gist or link anymore. Still available?
jonasschnelli: yes, we'll discuss the next days
Minor resource usage question: for a good number of use cases, our SHA256 hashes really have no length extension vulnerabilities. Should we add a custom SHA256 hasher which doesn't add any padding? there are a number of use cases where this can reduce hashing by 1/2. E.g.: taggedhash in Taproot, both branches are 32 bytes, so we end up needing to hash two buffers, even though it's always 64 bytes. Or in ScriptCache lookups,
the hash computed is salted and not publicly visible, so there's no real point in including 8 bytes of length info.