Class: Zilliqa::Util::Bech32

Inherits:
Object
  • Object
show all
Defined in:
lib/zilliqa/util/bech32.rb

Class Method Summary collapse

Class Method Details

.from_bech32(address) ⇒ Object 



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# 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) ⇒ Object 



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# 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) ⇒ Object

to_checksum_address

takes hex-encoded string and returns the corresponding address

Parameters:

  • address (string) 


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# 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