module EthereumBip44::Ethereum

Public Instance Methods

get_ethereum_address(index) click to toggle source
# File lib/ethereum_bip44/ethereum.rb, line 3
def get_ethereum_address(index)
  node = @wallet_node.node_for_path("M/0/#{index}")

  # from bitcoin public key to ethereum public key
  group = ECDSA::Group::Secp256k1
  public_key = ECDSA::Format::PointOctetString.decode(node.public_key.to_bytes, group) # a point
  ethereum_public = public_key.x.to_s(16) + public_key.y.to_s(16)

  # from ethereum public key to ethereum address
  bytes = EthereumBip44::Utils.hex_to_bin(ethereum_public)
  address_bytes = Digest::SHA3.new(256).digest(bytes)[-20..-1]
  address = EthereumBip44::Utils.bin_to_hex(address_bytes)
  EthereumBip44::Utils.prefix_hex(address)
end