A general-purpose Ethereum C library. This library is an on-going work-in-progress, and the API should not be considered stable.
- Private key generation
- Public Key, Address, and EIP-55 Address from private key
- Transaction creation and signing
- RLP-encoding implementation
- Access to cryptographic primitives (secp256k1
ECDSAPUBKEY,ECDSASIGN,ECDSARECOVER, keccak256 hashing)
Importing a private key, creating and signing a transaction, sending 1 ETH with a gas price of 1 GWei, with no data:
#include <aether/secp256k1.h>
#include <aether/tx.h>
#include <aether/vector/vector-uchar.h>
#include <secp256k1.h>
//Importing a secret key from a string literal
aether_secp256k1_seckey sk;
aether_secp256k1_seckey_import(&sk, ETH_PRV_KEY);
//Initializing a transaction with the proper data
struct aether_eth_tx tx;
aether_eth_tx_init(&tx, "0", "100000000", "21000", "F7FE578C81788A551E6C3EFA54501F463CE26AF7", "1000000000000000000", "", "1");
//Create the proper secp256k1 context pointer
secp256k1_context* ctx = secp256k1_context_create(SECP256K1_CONTEXT_SIGN);
//Initialize a dynamically-sized buffer of bytes to hold our signed RLP-encoded tx
struct aether_vector_uchar tx_sig;
aether_vector_uchar_init(&tx_sig);
//Finally, sign!
aether_eth_tx_sign(&tx_sig, &tx, &sk, ctx);
aether_eth_tx_deinit(&tx);
aether_vector_uchar_deinit(&tx_sig);
secp256k1_context_destroy(ctx);Aether currently requires libsecp256k1 and libgmp as dependencies. On Ubuntu, they may be installed by running:
sudo apt install libsecp256k1-dev
sudo apt install libgmp-dev
Running make in the ./test directory will build and execute all tests. Catch2 is used as the unit testing framework.
Note that tests working with signing transactions will require a private key. Create config.h within the ./test/include directory with the macro AETHER_ETH_TEST_PRV_KEY set to a valid private key as a string literal.
This library has been licensed under the GNU Lesser General Public License v2.1.