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Use CSPRNG for private keys

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This commit is contained in:
Jonathan Underwood 2021-12-16 02:04:16 +09:00
parent cda4559cfd
commit d4ab05bada
1 changed files with 15 additions and 0 deletions
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15
js/coin.js
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@ -42,9 +42,24 @@
};
}
/* generate crypto secure random numbers (should exist on most browsers) */
coinjs.randomBytesSafe = function(count){
var cry = window.crypto || window.msCrypto;
if (!cry) return '';
var buf = new Uint8Array(count);
cry.getRandomValues(buf);
var s = '';
for (var i = 0; i < buf.length; i++) {
var h = buf[i].toString(16);
s += h.length === 1 ? '0' + h : h;
}
return s;
}
/* generate a new random private key */
coinjs.newPrivkey = function(){
var x = window.location;
x += coinjs.randomBytesSafe(32);
x += (window.screen.height * window.screen.width * window.screen.colorDepth);
x += coinjs.random(64);
x += (window.screen.availHeight * window.screen.availWidth * window.screen.pixelDepth);