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ecrecover's Introduction

ecrecover

FFI (NIF) export of Ethereum's ecrecover for use from Erlang based on https://github.com/bitcoin-core/secp256k1.git

Build

Execute:

./rebar3 compile

Erlang integration

The shared library uses NIF. Use the Erlang file src/ecrecover.erl to use this:

./rebar3 shell
Erlang/OTP 25 [erts-13.1.3] [source] [64-bit] [smp:8:8] [ds:8:8:10] [async-threads:1] [jit] [dtrace]
Eshell V13.1.3  (abort with ^G)

1> Decoded = binary:decode_hex(<<"47173285a8d7341e5e972fc677286384f802f8ef42a5ec5f03bbfa254cb01fad000000000000000000000000000000000000000000000000000000000000001b650acf9d3f5f0a2c799776a1254355d5f4061762a237396a99a0e0e3fc2bcd6729514a0dacb2e623ac4abd157cb18163ff942280db4d5caad66ddf941ba12e03">>).
2> List = binary:bin_to_list(Decoded).
3> Hash = binary:list_to_bin(lists:sublist(List, 1, 32)).
4> Sig = binary:list_to_bin(lists:sublist(List, 64, 65)).
5> Input = <<Hash/binary, 0:(8*31), Sig/binary>>.
6> binary:bin_to_list(Input) == binary:bin_to_list(Decoded).
7> Result = ecrecover:recover(Hash, Sig).
8> Expected = binary:decode_hex(<<"000000000000000000000000c08b5542d177ac6686946920409741463a15dddb">>).
9> Result == Expected. %% check result

ecrecover's People

Contributors

jsnewby avatar seanhinde avatar tolbrino avatar dincho avatar johnsnewby avatar ivaylopapazov avatar thepiwo avatar

Watchers

James Cloos avatar avatar

Forkers

tolbrino thepiwo isabella232 cleverfox

ecrecover's Issues

Port parity changes to upstream

We currently rely on a modified version of parity which is already not building anymore. We need to get our changes into upstream or find another maintainable solution.

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