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| var createHash = require('create-hash')
| var Buffer = require('safe-buffer').Buffer
|
| module.exports = function (seed, len) {
| var t = Buffer.alloc(0)
| var i = 0
| var c
| while (t.length < len) {
| c = i2ops(i++)
| t = Buffer.concat([t, createHash('sha1').update(seed).update(c).digest()])
| }
| return t.slice(0, len)
| }
|
| function i2ops (c) {
| var out = Buffer.allocUnsafe(4)
| out.writeUInt32BE(c, 0)
| return out
| }
|
|
