From 8d359f4d8e27bf5992508bc11486a482d270d6f8 Mon Sep 17 00:00:00 2001 From: ausiv4 Date: Fri, 24 Jul 2009 13:58:33 +0000 Subject: Fixing previous mistake --- proper-random/javascript/rng.js | 68 ----------------------------------------- 1 file changed, 68 deletions(-) delete mode 100644 proper-random/javascript/rng.js (limited to 'proper-random/javascript/rng.js') diff --git a/proper-random/javascript/rng.js b/proper-random/javascript/rng.js deleted file mode 100644 index 03afc3a..0000000 --- a/proper-random/javascript/rng.js +++ /dev/null @@ -1,68 +0,0 @@ -// Random number generator - requires a PRNG backend, e.g. prng4.js - -// For best results, put code like -// -// in your main HTML document. - -var rng_state; -var rng_pool; -var rng_pptr; - -// Mix in a 32-bit integer into the pool -function rng_seed_int(x) { - rng_pool[rng_pptr++] ^= x & 255; - rng_pool[rng_pptr++] ^= (x >> 8) & 255; - rng_pool[rng_pptr++] ^= (x >> 16) & 255; - rng_pool[rng_pptr++] ^= (x >> 24) & 255; - if(rng_pptr >= rng_psize) rng_pptr -= rng_psize; -} - -// Mix in the current time (w/milliseconds) into the pool -function rng_seed_time() { - rng_seed_int(new Date().getTime()); -} - -// Initialize the pool with junk if needed. -if(rng_pool == null) { - rng_pool = new Array(); - rng_pptr = 0; - var t; - if(navigator.appName == "Netscape" && navigator.appVersion < "5" && window.crypto) { - // Extract entropy (256 bits) from NS4 RNG if available - var z = window.crypto.random(32); - for(t = 0; t < z.length; ++t) - rng_pool[rng_pptr++] = z.charCodeAt(t) & 255; - } - while(rng_pptr < rng_psize) { // extract some randomness from Math.random() - t = Math.floor(65536 * Math.random()); - rng_pool[rng_pptr++] = t >>> 8; - rng_pool[rng_pptr++] = t & 255; - } - rng_pptr = 0; - rng_seed_time(); - //rng_seed_int(window.screenX); - //rng_seed_int(window.screenY); -} - -function rng_get_byte() { - if(rng_state == null) { - rng_seed_time(); - rng_state = prng_newstate(); - rng_state.init(rng_pool); - for(rng_pptr = 0; rng_pptr < rng_pool.length; ++rng_pptr) - rng_pool[rng_pptr] = 0; - rng_pptr = 0; - //rng_pool = null; - } - // TODO: allow reseeding after first request - return rng_state.next(); -} - -function rng_get_bytes(ba) { - var i; - for(i = 0; i < ba.length; ++i) ba[i] = rng_get_byte(); -} - -function SecureRandom() {} - -SecureRandom.prototype.nextBytes = rng_get_bytes; -- cgit v1.2.3