b44f83f0a8
* crypto_stream: signature change needed to modularise * move ed25519 arithmetic to separate module * module: poly1305 * module: crypto_scalarmult * module: crypto_hash * module: crypto_sign * module: crypto_secretbox * move verify functions to crypto_verify module * leftover crypto_stream functions * module: crypto_onetimeauth * module: crypto_box * tidy up * require ed25519.js * update: crypto_hash * add chacha20; align API with PR#21 * update sha512 to wasm module * fix bugs in crypto_sign * be standard * add: crypto_box_seed_keypair; alias crypto_kx methods to crypto_box * scalarmult: import curve methods; be standard * correction: crypto_kx is not actually an alias of crypto_box * export _9 constant field element * add: crypto_box_seed_keypair * removed duplicate module.exports declaraion * declare constants about exports * rename memzero -> sodium-memzero * update sodium_memzero function to arr.fill(0) * tidy: remove legacy functions * added: crypto_aead_chacha20poly1305_ietf methods * listen to linter * add assertions * chacha: readUint32Le generalised for uint8array; aead: standard fix * add null check on ad param * added: sodium_memcmp * export sodium_memcmp * export crypto_verify module * sodium_memcmp returns boolean * added: sodium_is_zero * catch syntax error * throw if crypto_aead cannot validate, fix typo in crypto_verify * move chacha20 alg to external module * use Uint8Arrays instead of buffers * change checks to assertions * bump to chacha 1.0.3 - remove Buffer dependency * reduce code branching, align return values with sodium-native * add sha-wasm deps to package.json * standard fixes * bump chacha20 to 1.0.4: remove Buffer dep * move crypto_hash_sha256 to module to uncouple wasm dependencies * add endian check: all other modules require members of this set * correct filename: crypto_hash_sha256 * export constant: crypto_hash_sha512_BYTES
35 lines
689 B
JavaScript
35 lines
689 B
JavaScript
const assert = require('nanoassert')
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module.exports = {
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crypto_verify_16,
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crypto_verify_32,
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sodium_memcmp,
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sodium_is_zero
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}
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function vn (x, xi, y, yi, n) {
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var i, d = 0
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for (i = 0; i < n; i++) d |= x[xi + i] ^ y[yi + i]
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return (1 & ((d - 1) >>> 8)) - 1
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}
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function crypto_verify_16(x, xi, y, yi) {
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return vn(x, xi, y, yi, 16)
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}
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function crypto_verify_32(x, xi, y, yi) {
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return vn(x, xi, y, yi, 32)
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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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