| var MAX_ALLOC = Math.pow(2, 30) - 1 // default in iojs |
| |
| function checkBuffer (buf, name) { |
| if (typeof buf !== 'string' && !Buffer.isBuffer(buf)) { |
| throw new TypeError(name + ' must be a buffer or string') |
| } |
| } |
| |
| module.exports = function (password, salt, iterations, keylen) { |
| checkBuffer(password, 'Password') |
| checkBuffer(salt, 'Salt') |
| |
| if (typeof iterations !== 'number') { |
| throw new TypeError('Iterations not a number') |
| } |
| |
| if (iterations < 0) { |
| throw new TypeError('Bad iterations') |
| } |
| |
| if (typeof keylen !== 'number') { |
| throw new TypeError('Key length not a number') |
| } |
| |
| if (keylen < 0 || keylen > MAX_ALLOC || keylen !== keylen) { /* eslint no-self-compare: 0 */ |
| throw new TypeError('Bad key length') |
| } |
| } |