XOR Calculator can XOR two data values. The XOR Calculator applet is used to XOR together two data values of up to 256-bits (64 hex digits). It also calculates the hamming weight (number of 1's) in the result.
The XORcalc.html page is used to access the XOR Calculator. To use the calculator fill in the two Input Data values, each up to 64 hexadecimal digits long, and then press the XOR button to compute and display the result. If there is an error in the supplied values, an error message will be displayed in red.
If you want to look under the hood, the sources are available in the jarfile. Copy it onto your system, extract files with "jar xvf XORcalc.jar", and look at the README file for more information. A Unix Makefile for building the sources using the Java SDK is included. The source code is written for clarity, not for efficiency!
The license of this software is Freeware, you can free download and free use this calculator software.