| 1 | const { timingSafeEqual: TSE } = require('crypto')
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| 2 |
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| 3 | const paddedBuffer = (input, length) => {
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| 4 | if (input.length === length) {
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| 5 | return input
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| 6 | }
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| 7 |
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| 8 | const buffer = Buffer.alloc(length)
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| 9 | input.copy(buffer)
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| 10 | return buffer
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| 11 | }
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| 12 |
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| 13 | const timingSafeEqual = (a, b) => {
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| 14 | const length = Math.max(a.length, b.length)
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| 15 | return TSE(paddedBuffer(a, length), paddedBuffer(b, length))
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| 16 | }
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| 17 |
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| 18 | module.exports = timingSafeEqual
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