32 lines
607 B
JavaScript
32 lines
607 B
JavaScript
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/* eslint-disable camelcase */
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const assert = require('nanoassert')
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const { vn } = require('./crypto_verify')
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function sodium_increment (n) {
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const nlen = n.byteLength
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var c = 1
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for (var i = 0; i < nlen; i++) {
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c += n[i]
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n[i] = c
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c >>= 8
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}
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}
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function sodium_memcmp (a, b) {
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assert(a.byteLength === b.byteLength, 'buffers must be the same size')
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return vn(a, 0, b, 0, a.byteLength) === 0
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}
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function sodium_is_zero (arr) {
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var d = 0
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for (let i = 0; i < arr.length; i++) d |= arr[i]
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return d === 0
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}
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module.exports = {
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sodium_increment,
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sodium_memcmp,
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sodium_is_zero
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}
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