25 lines
1.0 KiB
JavaScript
25 lines
1.0 KiB
JavaScript
// Copyright (C) 2016 Dmitry Chestnykh
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// MIT License. See LICENSE file for details.
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/**
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* Sets all values in the given array to zero and returns it.
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*
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* The fact that it sets bytes to zero can be relied on.
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*
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* There is no guarantee that this function makes data disappear from memory,
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* as runtime implementation can, for example, have copying garbage collector
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* that will make copies of sensitive data before we wipe it. Or that an
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* operating system will write our data to swap or sleep image. Another thing
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* is that an optimizing compiler can remove calls to this function or make it
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* no-op. There's nothing we can do with it, so we just do our best and hope
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* that everything will be okay and good will triumph over evil.
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*/
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export function wipe(array) {
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// Right now it's similar to array.fill(0). If it turns
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// out that runtimes optimize this call away, maybe
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// we can try something else.
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for (let i = 0; i < array.length; i++) {
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array[i] = 0;
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}
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return array;
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}
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//# sourceMappingURL=wipe.js.map
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