class Zilliqa::Util::Bech32

Public Class Methods

from_bech32(address) click to toggle source
# File lib/zilliqa/util/bech32.rb, line 17
def self.from_bech32(address)
  data = Bitcoin::Bech32.decode(address)

  raise 'Expected hrp to be zil' unless data[0] == 'zil'

  ret = Bitcoin::Bech32.convert_bits(data[1], from_bits: 5, to_bits: 8, pad: false)

  to_checksum_address(Util.encode_hex(ret.pack('c*'))).sub('0x', '')
end
to_bech32(address) click to toggle source
# File lib/zilliqa/util/bech32.rb, line 7
def self.to_bech32(address)
  raise 'Invalid address format.' unless Validator.address?(address)

  address = address.sub('0x','')

  ret = Bitcoin::Bech32.convert_bits(Util.decode_hex(address).bytes, from_bits: 8, to_bits: 5, pad: false)

  Bitcoin::Bech32.encode('zil', ret)
end
to_checksum_address(address) click to toggle source

to_checksum_address

takes hex-encoded string and returns the corresponding address

@param {string} address @returns {string}

# File lib/zilliqa/util/bech32.rb, line 33
def self.to_checksum_address(address)
  return from_bech32(address) if Validator.bech32?(address)

  address = address.downcase.gsub('0x', '')
  s1 = Digest::SHA256.hexdigest(Util.decode_hex(address))
  v = s1.to_i(16)

  ret = ['0x']
  address.each_char.each_with_index do |c, idx|
    if '1234567890'.include?(c)
      ret << c
    else
      ret << ((v & (2 ** (255 - 6 * idx))) < 1 ? c.downcase : c.upcase)
    end
  end

  ret.join
end