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Challenge

Name: Anonymous 2009-06-16 10:40

Write an encryption and decryption program which would
 Read file A and use its contents as bitstring which would
be input for this transformation(Its XOR btw), assuming the initial "previous bit" as 0:
If previous bit is equal to next bit write 0 into File B, else write 1 into File B.
The decryption program must take File B and produce File A.

Whoever does it in least characters wins.

Name: Anonymous 2009-06-16 10:47

wins what?

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