FREE DiceLock Security DiceChecker DLL Library. If in your process or software applications you have need for random number streams and you want to check that the input or output random stream is really at random, you can incorporate DiceChecker library in your applications to be sure that the random streams are at random. Incorporate random number tests in your applications. The C++ library contains classes implementing Frequency Test, Block Frequency Test, Cumulative Sum Forward Test, Cumulative Sum Reverse Test, Runs Test, Longest Run Of Ones Test, Overlapping Template Matching Test, Rank Test, Universal Test, Approximate Entropy Test, Serial Test, Discrete Fourier Transform Test, Linear Complexity Test.