This page uses machine translation from English, which may contain errors or unclear language. For the most accurate information, please see the original English version. Some content may be in the original English due to frequent updates. Help us improve this page's translation by joining our effort on Crowdin. (Crowdin translation page, Contributing guide)

V3 keystore

This example demonstrates how to encrypt and decrypt keystore V3.

Import extend from web3py_ext to extend web3 to kaia web3

Import Account class from eth_account

Define a keystore v3, this step illustrates preparing a keystore from file

Read the keystore from file and decrypt it with 'password'

Get the public and private key of the keystore

You can create a new keystore with the same address and different password by using Account.encrypt

Check if the new_keystore has the same public and private key as v3_keystore_str.

keystoreV3.js


from web3py_ext import extend
from eth_account import Account
v3_keystore_str = '''{
  "address": "029e786304c1531af3ac7db24a02448e543a099e",
  "id": "9d492c95-b9e3-42e3-af73-5c77e932208d",
  "version": 3,
  "crypto": {
    "cipher": "aes-128-ctr",
    "cipherparams": {"iv": "bfcb88a1501e2bb1e6694c03da18953d"},
    "ciphertext": "076510b4e25d5cfc31239bffcad6036fe543cbbb04b9f3ec719bf4f61b58fc05",
    "kdf": "scrypt",
    "kdfparams": {
      "salt": "79124f05995aae98b3088d8365f59a6dfadd1c9ed249abae3c07733f4cbbee53",
      "n": 131072,
      "dklen": 32,
      "p": 1,
      "r": 8
    },
    "mac": "d70f83824c2c30dc5cd3a244d87147b6aa713a6000165789a82a467651284ac7"
  }
}'''
with open('keystore', 'w') as f:
    f.write(v3_keystore_str)
with open('keystore') as f:
    pk = Account.decrypt(f.read(), 'password')
    acc = Account.from_key(pk)
    print(acc.address, acc.key.hex())
    
    # create a new keystore with other password
    new_keystore=Account.encrypt(acc.key.hex(),'password1')
    new_pk = Account.decrypt(new_keystore, 'password1')
    acc = Account.from_key(pk)
    print("New keystore")
    print(acc.address, acc.key.hex())

output


❯ python keystore-v3.py
0x029e786304c1531aF3aC7db24A02448e543A099E 0x1b33a48f58d8c85ab142a7375fcf18714d88271f6647cfa6b54f1be66b05a762
New keystore
0x029e786304c1531aF3aC7db24A02448e543A099E 0x1b33a48f58d8c85ab142a7375fcf18714d88271f6647cfa6b54f1be66b05a762