Programming: Secure Hash Algorithm (SHA-1)

As part of a project to create a secure web log-in for a non-SSL environment, I created a Javascript implementation of the Secure Hash Algorithm (SHA-1). (See Federal Information Processing Standards Publication (FIPS PUB) 180-1 for details.) Javascript implementations vary from browser to browser, making a "correct" implementation extremely difficult. My goal was to develop an implementation that will run on virtually any Javascript-capable browser/operating system. To test the script on your browser, or to see my results so far, see my SHA-1 Browser Test page.

If you find this script useful, you may download it and use it under the terms of the GNU General Public License.