ingot

A minimal, audited Ethereum signing library for C++20.

#include <ingot/signing.hpp>

ingot::SigningKey<ingot::Secp256k1> key("0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80");

auto sig = key.personal_sign("hello");
auto addr = key.address();

Features

• Simple API -- SigningKey, Address, Signature, and you're done
• EIP-191 personal_sign out of the box
• Defensive -- secret key zeroing on destruction, move, and constructor throw; nonce cleanup after signing; explicit_bzero for guaranteed memory wipe
• Fast -- keccak-f1600 compiles to fully unrolled straight-line rolq instructions, matching tiny_sha3 performance
• Cross-validated -- signatures verified identical to viem

Dependencies

• libsecp256k1 (fetched automatically as a meson subproject)
• doctest (via Conan, test only)

Quick start

# Install dependencies
conan install . --profile=conan_clang_profile --output-folder=build --build=missing

# Configure and build
CC=clang CXX=clang++ meson setup build \
  --native-file build/conan_meson_native.ini \
  --pkg-config-path build \
  --wrap-mode=default

ninja -C build
ninja -C build test

See Getting Started for detailed setup instructions.