forked from liweijie/education
28 lines
806 B
JavaScript
28 lines
806 B
JavaScript
'use strict';
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var $isFinite = isFinite;
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var MAX_ALLOC = Math.pow(2, 30) - 1; // default in iojs
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module.exports = function (iterations, keylen) {
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if (typeof iterations !== 'number') {
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throw new TypeError('Iterations not a number');
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}
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if (iterations < 0 || !$isFinite(iterations)) {
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throw new TypeError('Bad iterations');
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}
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if (typeof keylen !== 'number') {
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throw new TypeError('Key length not a number');
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}
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if (keylen < 0 || keylen > MAX_ALLOC || keylen !== keylen) { /* eslint no-self-compare: 0 */
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throw new TypeError('Bad key length');
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}
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// `-0` passes the `keylen < 0` guard above (since `-0 < 0` is `false`), but
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// the native binding requires a true Int32; `-0` is held as a double and
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// aborts the process (SIGABRT) on Node.js 15+. Coerce it to `+0`.
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return keylen + 0;
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};
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