tornado-packages/ethers.js
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Fixed fallback randomBytes for weak-crypto browsers..

Browse Source
This commit is contained in:
ricmoo 2017-03-08 01:51:04 -05:00
parent 33a1459505
commit 730ccd36b2
1 changed files with 9 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
utils/browser-random-bytes.js
View File

@ -6,10 +6,15 @@ var crypto = global.crypto || global.msCrypto;
if (!crypto || !crypto.getRandomValues) { if (!crypto || !crypto.getRandomValues) {
console.log('WARNING: Missing strong random number source; using weak randomBytes'); console.log('WARNING: Missing strong random number source; using weak randomBytes');
crypto = { crypto = {
getRandomValues: function(length) { getRandomValues: function(buffer) {
for (var round = 0; round < 20; round++) {
for (var i = 0; i < buffer.length; i++) { for (var i = 0; i < buffer.length; i++) {
buffer[i] = parseInt(256 * Math.random()); if (round) {
buffer[i] ^= parseInt(256 * Math.random());
} else {
buffer[i] = parseInt(256 * Math.random());
}
}
} }
return buffer; return buffer;