70 lines
1.2 KiB
Ruby
70 lines
1.2 KiB
Ruby
# -*- coding: binary -*-
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module Rex
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module Encoder
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###
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#
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# This class performs basic XOR encoding.
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#
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###
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class Xor
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attr_accessor :raw, :encoded, :badchars, :opts, :key, :fkey # :nodoc:
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#
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# wrap that in a wanna be static class
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#
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def self.encode(*args)
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self.new.encode(*args)
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end
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#
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# Return the class associated with this encoder.
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#
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def encoder()
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self.class::EncoderKlass
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end
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#
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# This method encodes the supplied data, taking into account the badchar
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# list, and returns the encoded buffer.
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#
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def encode(data, badchars = '', opts = { })
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self.raw = data
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self.badchars = badchars
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self.opts = opts
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# apply any transforms to the plaintext data
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data = _unencoded_transform(data)
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self.encoded, self.key, self.fkey = encoder().find_key_and_encode(data, badchars)
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# apply any transforms to the encoded data
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self.encoded = _encoded_transform(encoded)
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return _prepend() + encoded + _append()
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end
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protected
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def _unencoded_transform(data) # :nodoc:
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data
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end
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def _encoded_transform(data) # :nodoc:
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data
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end
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def _prepend() # :nodoc:
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""
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end
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def _append() # :nodoc:
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""
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end
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end
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end end
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