While most of the code associated with secp256k1 operations had
been migrated to libsecp256k1, the deterministic key derivation
code was still using calls to OpenSSL.
If merged, this commit replaces the OpenSSL-based routines with
new libsecp256k1-based implementations. No functional change is
expected and the change should be transparent.
This commit also removes several support classes and utility
functions that wrapped or adapted various OpenSSL types that
are no longer needed.
A tip of the hat to the original author of this truly superb
library, Dr. Pieter Wuille, and to all other contributors.
Add support to allow multiple indepedent nodes to produce a binary identical
shard for a given range of ledgers. The advantage is that servers can use
content-addressable storage, and can more efficiently retrieve shards by
downloading from multiple peers at once and then verifying the integrity of
a shard by cross-checking its checksum with the checksum other servers report.
* Add a new operating mode to rippled called reporting mode
* Add ETL mechanism for a reporting node to extract data from a p2p node
* Add new gRPC methods to faciliate ETL
* Use Postgres in place of SQLite in reporting mode
* Add Cassandra as a nodestore option
* Update logic of RPC handlers when running in reporting mode
* Add ability to forward RPCs to a p2p node
* Markdown explanation of what levelization is, the intended levels, as
well as the process used to determine dependencies
* Shell script finds all dependencies, groups them, and finds cyclic
dependencies and maps out non-cyclic dependencies.
* Github job to run the script and fail if anything changes. Should
catch introduction of new dependencies and new problems. Will also
detect changes if problems or dependencies are removed.
