James Lee
31 lines
459 B
Ruby
31 lines
459 B
Ruby
module Msf
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module Encoding
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###
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#
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# This class provides basic XOR encoding facilities and is used
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# by XOR encoders.
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#
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###
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class Xor
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#
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# Encodes a block using XOR.
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#
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def Xor.encode_block(key, block, block_size = 4, block_pack = 'V')
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offset = 0
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oblock = ''
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while (offset < block.length)
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cblock = block[offset, block_size].unpack(block_pack)[0]
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cblock ^= key
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oblock += [ cblock ].pack(block_pack)
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end
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return oblock
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end
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end
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end end
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