/usr/lib/nodejs/public-encrypt/mgf.js is in node-public-encrypt 4.0.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | var createHash = require('create-hash');
module.exports = function (seed, len) {
var t = new Buffer('');
var i = 0, 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 = new Buffer(4);
out.writeUInt32BE(c,0);
return out;
}
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