Method: Bitcoin::Base58.decode

Defined in:
lib/bitcoin/base58.rb

.decode(base58_val) ⇒ Object

decode base58 string to hex value.



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# File 'lib/bitcoin/base58.rb', line 24

def decode(base58_val)
  int_val = 0
  base58_val.reverse.split(//).each_with_index do |char,index|
    raise ArgumentError, 'Value passed not a valid Base58 String.' if (char_index = ALPHABET.index(char)).nil?
    int_val += char_index * (SIZE ** index)
  end
  s = int_val.to_even_length_hex
  s = '' if s == '00'
  leading_zero_bytes = (base58_val.match(/^([1]+)/) ? $1 : '').size
  s = ('00' * leading_zero_bytes) + s if leading_zero_bytes > 0
  s
end