PigPGP 0.2.2
512-bit RSA Cryptosystem on JavaScript

日本語 English

This Version:

http://www.faireal.net/demo/PigPGP/0_2_2

Previous Version:

http://www.faireal.net/demo/PigPGP/0_2_1

Latest Version:

http://www.faireal.net/demo/PigPGP/

23 Jan 2004

Introduction

PigPGP 0.2.2 is a Unicode-based, click-to-run RSA implementation on JavaScript (Netscape 4.06 or higher). PigPGP is somewhat PGP-like, but not compatible with PGP/GPG.

The maximum supported key length is 512 bits. It runs quite fast for 128 bits (or 39 digits), which can be interesting for educational purposes, though being too weak for serious use. 256-bit system is not very strong either, but usable at a decent speed and good enough for some purposes. 360 and 512 bits are stronger and slower. Even 1024 bits would be possible, though not supported in this demo.

Some of you may feel it thrilling enough just to see 512-bit RSA running on JavaScript. The main reason I wrote these codes is to enjoy myself, not that I thought RSA on JavaScript would be useful for practical purposes.

All the files here are in UTF-8. Some of them are in Japanese, as it's my first language.

Changelog

• 30 - 40% faster than 0.2.0/0.2.1
• Implementation of the Miller-Rabin Test fixed. bigint.js v0.5 beta 10 was enbugged and as a result, the Fermat Test (which is less efficient) was executed in ver 0.2.0 while the Miller-Rabin Test was intended.
• Now using a newer, improved, library: bigint.js v0.5 beta 22. (v0.5 beta 12 was used in the previous version.) Possibly being enbugged too.
• Now the percentage is shown to indicate the progress when decrypting.
• Verbose mode is not selected by default now. Select it manually if needed, by checking the checkbox.

Tested Browser

Tested on: Windows 2000 (Japanese Version), Windows 98 SE (English Version), and/or Windows XP (English Version)

• Netscape 4.06 (4.05 or lower is not supported): partial Unicode support
• Netscape 4.80 (4.7x should work too): partial Unicode support
• Internet Explorer 4.01/5.0/5.01/5.5/6.0.
• Mozilla 1.5/1.6/1.7 (1.4 or lower should work too)
• Opera 7.5

Source

pigpgp.js (main), random.js (pseudorandom number generator: Mersenne Twister), and bigint.js v0.5 beta 22 (library for arbitrary-precision integer). random.js is under Artistic License. The other files are absolutely free: use them, with or without modification, without asking.

Contact Info

Send your feedback to seelie317 <seelie317 at faireal.net>

Demo