Class: SHA0::Digest

Inherits:
Object
  • Object
show all
Defined in:
lib/sha0.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Digest

Returns a new instance of Digest.



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# File 'lib/sha0.rb', line 12

def initialize()
  @data = ''
  @data_length = 0
  @hash = [
    0x67452301,
    0xefcdab89,
    0x98badcfe,
    0x10325476,
    0xc3d2e1f0
  ]
  @rounds = 80
  @tmp = []
  @unit_size = 4
  @block_size = 16
  @block_byte_size = @block_size * @unit_size
end

Instance Method Details

#digest ⇒ Object 



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# File 'lib/sha0.rb', line 42

def digest
  current_hash.pack('N*')
end

#hexdigest ⇒ Object 



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# File 'lib/sha0.rb', line 46

def hexdigest()
  current_hash.each_with_object('') do |partial, hash|
    hash << '0' * (8 - partial.to_s(16).length) + partial.to_s(16)
  end
end

#update(data) ⇒ Object 



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# File 'lib/sha0.rb', line 29

def update(data)
  @data += data
  @data_length += data.size

  while @data.size >= @block_byte_size
    block = @data[0, @block_byte_size].unpack('N*')
    @hash = process_block(block)
    @data = @data[@block_byte_size, @data.size - @block_byte_size]
  end

  self
end