Class: Mastercoin::Util

Inherits:
Object
  • Object
show all
Defined in:
lib/mastercoin-ruby/util.rb

Class Method Summary collapse

Class Method Details

.get_sequence(bitcoin_address) ⇒ Object 



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# File 'lib/mastercoin-ruby/util.rb', line 42

def self.get_sequence(bitcoin_address)
  decoded = Bitcoin.decode_base58(bitcoin_address)

  seq = decoded[2..3].to_i(16) - 1
  if seq < 0
    seq += 256
  end

  return seq
end

.multiple_hash(target, times = 1) ⇒ Object 



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# File 'lib/mastercoin-ruby/util.rb', line 22

def self.multiple_hash(target, times = 1)
  times -= 1
  new_target = Digest::SHA256.hexdigest(target).upcase
  if times > 0 
    return multiple_hash(new_target, times)
  end

  return new_target
end

.sort_and_strip_keys(keys) ⇒ Object 



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# File 'lib/mastercoin-ruby/util.rb', line 12

def self.sort_and_strip_keys(keys)
  Util.sort_keys(keys).collect{|key| Util.strip_key(key)}
end

.sort_keys(public_keys) ⇒ Object 



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# File 'lib/mastercoin-ruby/util.rb', line 3

def self.sort_keys(public_keys)
  public_keys.sort{|x,y| x[0..1] <=> y[0..1]}
end

.strip_key(key) ⇒ Object 



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# File 'lib/mastercoin-ruby/util.rb', line 7

def self.strip_key(key)
  return key[2..-1]
end

.valid_ecdsa_point?(pub_key) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mastercoin-ruby/util.rb', line 32

def self.valid_ecdsa_point?(pub_key)
  begin
    Bitcoin::Key.new(nil, pub_key).addr
  rescue OpenSSL::PKey::EC::Point::Error
    return false
  end

  return true
end

.xor_pack_unpack_strings(s1, s2) ⇒ Object 



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# File 'lib/mastercoin-ruby/util.rb', line 16

def self.xor_pack_unpack_strings(s1, s2)
  s1_bytes = [s1].pack("H*").unpack("C*")
  s2_bytes = [s2].pack("H*").unpack("C*")
  s1_bytes.zip(s2_bytes).map { |a, b| (a ^ b).to_s(16).rjust(2,"0") }.join
end