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)

V4 keystore

This example demonstrates how to encrypt and decrypt keystore V4.

Import extend from web3py_ext to extend web3 to kaia web3

Import Account class from eth_account

Define a keystore v4, this step illustrates preparing a keystore from file

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

Get the public and private keys of the keystore

You can create a new keystore with the same address and different password by using Account.encrypt. Currently kaia-sdk only supports creating v3 keystore.

Check if the new_keystore has the same public and private key as v4_keystore_str.

keystorev4.js


from web3py_ext import extend
from eth_account import Account
v4_keystore_str = '''{
  "version": 4,
  "id": "15f20a72-3719-4f10-b63d-2dbd2658a3ca",
  "address": "0x17226c9b4e130551c258eb7b1cdc927c13998cd6",
  "keyring": [
    {
      "ciphertext": "07162b797dcb32dd96686be249f9b3c357642bf5f5454d0fcbefedb265667f37",
      "cipherparams": {
        "iv": "8611384aaa8147ef54cbca175d2e818c"
      },
      "cipher": "aes-128-ctr",
      "kdf": "scrypt",
      "kdfparams": {
        "dklen": 32,
        "salt": "d7cb1f18d9fb7aa81042f61a61de9c456f829f2dc8b46cb6290d1bb9de89b791",
        "n": 4096,
        "r": 8,
        "p": 1
      },
      "mac": "ed0a57bbb11d512f7e3c3025e6dc497c15a2fa3aad1fe558b4cad53f887e06d8"
    },
    {
      "ciphertext": "394200b0c8abae159e7f19c3eee55409ec789ac77a970e4c3f6bc1839a4afbfc",
      "cipherparams": {
        "iv": "3013456d71996e32e231923f289f5c78"
      },
      "cipher": "aes-128-ctr",
      "kdf": "scrypt",
      "kdfparams": {
        "dklen": 32,
        "salt": "fca63eb0670a9bffcc67cb77f43525a8c93d49e0b24acbf7d2a98bff8a5a5cf1",
        "n": 4096,
        "r": 8,
        "p": 1
      },
      "mac": "880fa7e1240c1deb18898edea28a2baeb57a0c250971c5fea333033a92a958f7"
    },
    {
      "ciphertext": "e04e0c8c4eaf5a22a037c0771f41e5e3c6e09cf624832a340d1c962ac5aa03cb",
      "cipherparams": {
        "iv": "8777c8e5c244190b026c54b4a2474bf0"
      },
      "cipher": "aes-128-ctr",
      "kdf": "scrypt",
      "kdfparams": {
        "dklen": 32,
        "salt": "e4b4d5b664f6722a5ad41a1b46249204326c952b3a4ac255ae4a0b5128e4803a",
        "n": 4096,
        "r": 8,
        "p": 1
      },
      "mac": "c618020675a344b3e13dfe9c605115faf32dc80a7d24081b264ebf04fe5db1dd"
    }
  ]
}'''
with open('keystore', 'w') as f:
    f.write(v4_keystore_str)
with open('keystore') as f:
    pk = Account.v4_decrypt(f.read(), "Kaia")
    accs = list(map(lambda acc: Account.from_key_pair(acc['address'], acc['private_key']), pk))
    print("Original Keystores")
    for acc in accs:
        print(acc.address, acc.key.hex())
    print("New Keystores")
    # kaia-sdk only supports encrypting keystore v3
    for acc in accs:
      new_keystore=Account.encrypt(acc.key.hex(),'password1')
      new_pk = Account.decrypt(new_keystore, 'password1')
      new_acc = Account.from_key(new_pk)
      print(new_acc.address,new_acc.key.hex())

output


❯ python keystore-v4.py
Original Keystores
0x17226c9B4e130551c258Eb7B1Cdc927c13998cd6 0xeaffa1321040c44cfb8ae21cab8377198ef6706fb7b6b2a09db292b5fe2a5e63
0x17226c9B4e130551c258Eb7B1Cdc927c13998cd6 0x3b0ac1c503373e1a8f4c35a71dbce404846d8a6173538680dea1d149fd5e494c
0x17226c9B4e130551c258Eb7B1Cdc927c13998cd6 0x21558e1796ad364d34a0ad618f8b086c9af2694083a3cb129a0af10dc6b6cc9e
New Keystores
0x17226c9B4e130551c258Eb7B1Cdc927c13998cd6 0xeaffa1321040c44cfb8ae21cab8377198ef6706fb7b6b2a09db292b5fe2a5e63
0x354688C7A16eA109Da83e386A86945Abe395cDfC 0x3b0ac1c503373e1a8f4c35a71dbce404846d8a6173538680dea1d149fd5e494c
0x4B53Df387Cb8d256D65a7385c9a5AEF8DbB12265 0x21558e1796ad364d34a0ad618f8b086c9af2694083a3cb129a0af10dc6b6cc9e