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Software birthmarks utilize certain specific program characteristics to validate the origin of software, so it can be applied to detect software piracy. One state-of-the-art technology on software birthmark adopts dynamic system call dependence graphs as the unique signature of a program, which cannot be cluttered by existing obfuscation techniques and is also immune to the no-ops system call insertion...
In ACM-DRM 2001, Kiayias and Yung [19] introduced a classification of pirate decoders in the context of traitor tracing that put forth traceability against history recording and abrupt pirate decoders. History recording pirate decoders are able to maintain state during the traitor tracing process while abrupt decoders can terminate the tracing operation at will based on the value of a “React” predicate...
The property that the stream cipher RC4 can generate the same keystream outputs under two different secret keys has been discovered recently. The principle that how the two different keys can achieve a collision is well known by investigating the key scheduling algorithm of RC4. However, how to find those colliding key pairs is a different story, which has been largely remained unexploited. Previous...
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