3 unstable releases
0.3.0 | Aug 4, 2023 |
---|---|
0.2.1 | May 6, 2022 |
0.2.0 | May 5, 2022 |
#4 in #etk
Used in etk-dasm
10MB
115 lines
etk-4byte
Ethereum function selector reverse lookup database, populated from 4byte.directory.
Updating the Database
Since etk-4byte
is a purely offline database, it needs regular updates. To fetch the latest database and convert it to the expected format, run:
$ cargo run --features=generate --bin etk-4byte-generate > src/signatures.txt
$ cargo run --features=generate --bin etk-4byte-pack
Then recompile.
lib.rs
:
EVM Toolkit Function Selector Database.
To roughly quote 4byte.directory:
Function calls in the Ethereum Virtual Machine are specified by the first four bytes of data sent with a transaction. These function selectors are defined as the first four bytes of the Keccak-256 hash of the canonical representation of the function signature. Since this is a one-way operation, it is not possible to derive the human-readable representation of the function (signature) from the four byte selector. This database is meant to allow mapping those bytes signatures back to their human-readable versions.
Dependencies
~7–18MB
~416K SLoC