83 lines
2.7 KiB
JavaScript
83 lines
2.7 KiB
JavaScript
/* global describe, it */
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'use strict'
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var assert = require('assert')
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var ZCNoteDecryption = require('../src/note_decryption')
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var ZCNoteEncryption = require('../src/note_encryption')
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var util = require('../src/util')
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var zconst = require('../src/const')
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describe('Note Encryption', function () {
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var skEnc = util.generate_privkey([].reverse.call(Buffer.from('21035d60bc1983e37950ce4803418a8fb33ea68d5b937ca382ecbae7564d6a07', 'hex')))
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var pkEnc = util.generate_pubkey(skEnc)
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var hSig = util.random_uint256()
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var b = new ZCNoteEncryption(hSig)
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var message = Buffer.alloc(zconst.ZC_NOTEPLAINTEXT_SIZE)
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for (let i = 0; i < zconst.ZC_NOTEPLAINTEXT_SIZE; ++i) {
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message[i] = i
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}
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for (let i = 0; i < 255; ++i) {
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var ciphertext
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var decrypter = new ZCNoteDecryption(skEnc)
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it('correctly encrypts and decrypts nonce ' + i, function () {
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ciphertext = b.encrypt(pkEnc, message)
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var plaintext = decrypter.decrypt(ciphertext, b.epk, hSig, i)
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assert.strictEqual(plaintext.toString('hex'), message.toString('hex'))
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})
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it('fails to decrypt ' + i + ' with wrong nonce', function () {
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assert.throws(function () {
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decrypter.decrypt(ciphertext, b.epk, hSig, (i === 0) ? 1 : (i - 1))
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})
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})
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it('fails to decrypt ' + i + ' with wrong oneTimePubKey', function () {
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var c = new ZCNoteEncryption(hSig)
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assert.throws(function () {
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decrypter.decrypt(ciphertext, c.epk, hSig, i)
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})
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})
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it('fails to decrypt ' + i + ' with wrong seed', function () {
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assert.throws(function () {
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decrypter.decrypt(ciphertext, b.epk, [].reverse.call(Buffer.from('11035d60bc1983e37950ce4803418a8fb33ea68d5b937ca382ecbae7564d6a77', 'hex')), i)
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})
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})
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it('fails to decrypt ' + i + ' with corrupted ciphertext', function () {
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ciphertext[10] ^= 0xff
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assert.throws(function () {
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decrypter.decrypt(ciphertext, b.epk, hSig, i)
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})
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ciphertext[10] ^= 0xff
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})
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it('fails to decrypt ' + i + ' with wrong private key', function () {
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var skEnc2 = util.generate_privkey(util.random_uint252())
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var decrypter2 = new ZCNoteDecryption(skEnc2)
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assert.throws(function () {
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decrypter2.decrypt(ciphertext, b.epk, hSig, i)
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})
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})
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it('fails to decrypt ' + i + ' with wrong public key (test of KDF)', function () {
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var decrypter2 = new ZCNoteDecryption(skEnc)
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decrypter2.pk_enc = util.generate_pubkey(util.random_uint256())
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assert.throws(function () {
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decrypter2.decrypt(ciphertext, b.epk, hSig, i)
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})
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})
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}
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it('runs out of nonce space with nonce 255', function () {
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assert.throws(function () {
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b.encrypt(pkEnc, message)
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}, new RegExp('no additional nonce space for KDF'))
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})
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})
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