Python库 | eth-signer-0.1.6.tar.gz

# eth-signer A Python library for transection signing using AWS Key Management Service. ## Dependencies - Python 3.6+ ## QuickStart This Package is available on [PyPI](https://pypi.org/project/eth-signer/). Install via pip as: ```sh pip install eth-signer ``` ## Usage `eth-signer` needs AWS-KMS Client Object from `boto3` to sign Ethereum transaction or message. In the following example, the Basic use of `eth-signer` with `boto3` has been given. Step - 1 : Install required dependencies ```bash $ pip3 install boto3 eth-signer web3 ``` Step - 2 : Create a new key pair using boto3 ( Optional ) ```python import boto3 from eth_signer.signer import AWSKMSKey from web3 import Web3 # Get a kms_client Object From boto3 kms_client = boto3.client('kms', 'us-east-1') # Generate new Key Pair using kms_client new_key = kms.create_key( Description='New Eth Key', KeyUsage='SIGN_VERIFY', KeySpec='ECC_SECG_P256K1', Origin='AWS_KMS', MultiRegion=False ) # Use KekId of newly generated key pair for AWSKMSKey Object key_id = new_key['KeyMetadata']['KeyId'] kms_signer = AWSKMSKey(kms_client, key_id) web3 = Web3(Web3.HTTPProvider('https://ropsten.infura.io/v3/<PROJECT_ID>')) # Print Key ID and Eth address print("KeyId: ", key_id) print("Eth Address: ", kms_signer.address) ``` Step - 3 : Send a new transaction using web3, boto3 and eth-signer ```python import boto3 from eth_signer.signer import AWSKMSKey from web3 import Web3 # Get a kms_client Object From boto3 kms_client = boto3.client('kms', 'us-east-1') # User a KeyId of the AWS KMS Key key_id = 'af8929db-010c-4476-00X0-0X00000X00X0' kms_signer = AWSKMSKey(kms_client, key_id) web3 = Web3(Web3.HTTPProvider('https://ropsten.infura.io/v3/<PROJECT_ID>')) nonce = web3.eth.get_transaction_count(kms_signer.address) print(web3.eth.getBalance(kms_signer.address)) # build a transaction in a dictionary tx_obj = { "nonce": nonce, "from": kms_signer.address, "to": '0xBe0745cF5b82aB1de6fB1CEd849081BE06d9b3be', "value": web3.toWei(0.01, "ether"), "gas": 200000, "gasPrice": web3.toWei("50", "gwei"), } signed_tx = AWSKMSKey.sign_transaction(kms_signer, transaction_dict = tx_obj) tx_hash = signed_tx.hash web3.eth.send_raw_transaction(signed_tx.rawTransaction) ``` Output: `HexBytes('0x826a52e59431a4be8780807cdd09da01d0dbbb00848fd7c9dff8383869c7372c')` Transaction on [etherscan.io](https://ropsten.etherscan.io/tx/0x826a52e59431a4be8780807cdd09da01d0dbbb00848fd7c9dff8383869c7372c) ### Features - Support for Ethereum Transaction and Message Signing using AWS Key Management Service ### Contributors * [Kalpesh Sejpal](https://github.com/sejpalkalpesh/) * [Medium Article from Lucas Henning](https://luhenning.medium.com/the-dark-side-of-the-elliptic-curve-signing-ethereum-transactions-with-aws-kms-in-javascript-83610d9a6f81) ### Runtime dependencies The distributed eth-signer contains software from the following projects from PyPi: * eth-utils * eth-typing * hexbytes * eth-rlp * pycryptodome * boto3 * flake8 * isort * mypy * Sphinx * sphinx_rtd_theme * towncrier * bumpversion * setuptools * tox * twine