zervo/bitaddress.org
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Use webcrypto for whole seed initializing.

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This commit is contained in:
onovy 2014-01-05 12:42:34 +01:00
parent 9861b3311b
commit 68ce15d078
2 changed files with 30 additions and 20 deletions
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25
bitaddress.org.html
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@ -1613,21 +1613,26 @@ if (typeof Crypto == "undefined" || !Crypto.util) {
if (sr.pool == null) {
sr.pool = new Array();
sr.pptr = 0;
var t;
// Use webcrypto if available
if (window.crypto && window.crypto.getRandomValues) {
try {
// Use webcrypto if available
var ua = new Uint8Array(32);
var ua = new Uint8Array(sr.poolSize - sr.pptr);
window.crypto.getRandomValues(ua);
for (t = 0; t < 32; ++t)
sr.pool[sr.pptr++] = ua[t];
var i = 0;
while (sr.pptr < sr.poolSize) {
sr.pool[sr.pptr++] = ua[i++];
}
} catch (e) { alert(e); }
} else {
var t;
while (sr.pptr < sr.poolSize) { // extract some randomness from Math.random()
t = Math.floor(65536 * Math.random());
sr.pool[sr.pptr++] = t >>> 8;
sr.pool[sr.pptr++] = t & 255;
}
}
while (sr.pptr < sr.poolSize) { // extract some randomness from Math.random()
t = Math.floor(65536 * Math.random());
sr.pool[sr.pptr++] = t >>> 8;
sr.pool[sr.pptr++] = t & 255;
}
sr.pptr = 0;
sr.seedTime();
// entropy

25
src/securerandom.js
View file

@ -126,21 +126,26 @@
if (sr.pool == null) {
sr.pool = new Array();
sr.pptr = 0;
var t;
// Use webcrypto if available
if (window.crypto && window.crypto.getRandomValues) {
try {
// Use webcrypto if available
var ua = new Uint8Array(32);
var ua = new Uint8Array(sr.poolSize - sr.pptr);
window.crypto.getRandomValues(ua);
for (t = 0; t < 32; ++t)
sr.pool[sr.pptr++] = ua[t];
var i = 0;
while (sr.pptr < sr.poolSize) {
sr.pool[sr.pptr++] = ua[i++];
}
} catch (e) { alert(e); }
} else {
var t;
while (sr.pptr < sr.poolSize) { // extract some randomness from Math.random()
t = Math.floor(65536 * Math.random());
sr.pool[sr.pptr++] = t >>> 8;
sr.pool[sr.pptr++] = t & 255;
}
}
while (sr.pptr < sr.poolSize) { // extract some randomness from Math.random()
t = Math.floor(65536 * Math.random());
sr.pool[sr.pptr++] = t >>> 8;
sr.pool[sr.pptr++] = t & 255;
}
sr.pptr = 0;
sr.seedTime();
// entropy