Bouncy Castle scrypt implementation

So that people don't have to go to an external site for an answer:

1. Make sure bouncy castle jars are on your build path

2. Import SCrypt like so:

   import org.bouncycastle.crypto.generators.SCrypt;
   

3. Use SCrypt like so:

   byte[] sCryptHash = SCrypt.generate(plaintext.getBytes(), salt.getBytes(), cpuDifficultyFactor, memoryDifficultyFactor, parallelismDifficultyFactor, outputLength);
   

You can use the SCrypt class with its static method generate like this:

SCrypt.generate(passwordBytes, salt, costParam, blockSize, parallelization, passwordLength);

I can't really say what values you should use for costParam, blockSize or parallelization, the documentation doesn't say much to it. In our studies we used 8 for every of those.

Link to their docus: BCrypt - https://www.bouncycastle.org/docs/docs1.5on/org/bouncycastle/crypto/generators/BCrypt.html SCrypt - https://www.bouncycastle.org/docs/docs1.5on/org/bouncycastle/crypto/generators/SCrypt.html