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krbullock/gist:262302

Created December 23, 2009 04:14
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gistfile1.rb
require 'bindata'
module BlockSizeCalculator
def ciphertext_block_size(block_size)
block_size / CipherBlockSize +
(0 == block_size % CipherBlockSize ? 0 : 1) * CipherBlockSize +
CipherBlockSize
end
end
class ChrisPalmer < BinData::Record
include BlockSizeCalculator
uint32 :block_size
string :data, :read_length => lambda { ciphertext_block_size(block_size) }
end
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