Far Beyond Code LLC

Bruce Kirkpatrick

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Since 2001, this labor of love has provided endless challenges. While many people struggle, Bruce eagerly solves complex computer problems. You need a passionate expert like Bruce on your team.

Using scrypt hashing with Coldfusion or Railo

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Sun, Nov 10, 2013 at 6:00PM

To aid others in implementing scrypt using Coldfusion or Railo, I wanted to make a quick post to give you the short possible example of how it can be done.

Here is the Java source:

https://github.com/wg/scrypt/

You can find a binary jar file here or by search google for "scrypt 1.4 java jar":

http://mirrors.ibiblio.org/maven2/com/lambdaworks/scrypt/1.4.0/

Before selecting a CPU cost value, I did a quick benchmark of different values. Note the CPU cost has to be a multiple of 2.

CPU: Intel Core i7-3740QM benchmark results:

16384 = 37ms

32768 = 74ms

65536 = 366ms

131072 = 2.835ms

Make sure you put the Jar file in a location that is accessible by Coldfusion/Railo with the correct permissions and then update the path to the jar below. Note Railo has a third argument for specifying the Jar path. On coldfusion, you must remove that and rely on it being loaded from the classpath during start-up. You can determine your classpath in the administrator for Railo or Coldfusion.