21 lines
555 B
JavaScript
21 lines
555 B
JavaScript
/**
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* Does a constant-time string comparison by not short-circuiting
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* on first sign of non-equivalency.
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*
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* @param {String} a The first string to be compared against the second
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* @param {String} b The second string to be compared against the first
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* @return {Boolean}
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*/
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module.exports = function scmp(a, b) {
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a = String(a);
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b = String(b);
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var len = a.length;
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if (len !== b.length) {
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return false;
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}
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var result = 0;
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for (var i = 0; i < len; ++i) {
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result |= a.charCodeAt(i) ^ b.charCodeAt(i);
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}
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return result === 0;
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};
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