I'm trying to retrieve the ethereum address from the transaction signature. I have got the following transaction:

  blockHash: "0x82388a80a654586ec646115ae63a664e594e0e34dd6fb20dcf078d9495788578",
  blockNumber: 4311,
  from: "0x6825487b18c45c507d06b44ec2ba5b5bf3925f23",
  gas: 4712388,
  gasPrice: 100000000000,
  hash: "0x0fe0a5142f41e516f55017c03c173ea59382f7554a4d3e9efabd12b35734da32",
  input: "0xfdacd5760000000000000000000000000000000000000000000000000000000000000002",
  nonce: 249,
  r: "0x5897c2c7c7412b0a555fb6f053ddb6047c59666bbebc6f5573134e074992d841",
  s: "0x1c71d1c62b74caff8695a186e2a24dd701070ba9946748318135e3ac0950b1d4",
  to: "0xccfaed4390d5e757476f657bf96146570126188d",
  transactionIndex: 0,
  v: "0xa96",
  value: 0

Following Ethereum yellow paper I would have to do the following to retrieve the from address 0x6825487b18c45c507d06b44ec2ba5b5bf3925f23:

S(T) ≡ B 96..255(KEC(ECDSARECOVER(h(T), Tw ,Tr ,Ts))))

Where the values in my case is (Python code):

Tw = long("1c",16)
Tr = long("5897c2c7c7412b0a555fb6f053ddb6047c59666bbebc6f5573134e074992d841",16)
Ts = long("1c71d1c62b74caff8695a186e2a24dd701070ba9946748318135e3ac0950b1d4",16)
Thash = long("0fe0a5142f41e516f55017c03c173ea59382f7554a4d3e9efabd12b35734da32",16)


x,y=ecdsa_raw_recover(bin(Thash), (v, r, s))
k = sha3.keccak_256()

But I'm getting 8485031e62b6cf0ea13a32580e00b8ce77d614443f1a14a1f1495cfc48e985a7 instead of 6825487b18c45c507d06b44ec2ba5b5bf3925f23.

Anyone knows what am I doing wrong? I don't know if I'm missing some convertion or something like that.

Thanks in advance.

Best regards, Albert.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.