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brontide-test.js
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brontide-test.js
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'use strict';
const assert = require('bsert');
const {CipherState, Brontide} = require('../lib/net/brontide');
const HELLO = Buffer.from('hello', 'ascii');
const PROLOGUE = 'hns';
const ROTATION_INTERVAL = 1000;
/*
* Tests
*/
describe('CipherState', function() {
const cipher = new CipherState();
const key = Buffer.from(
'2121212121212121212121212121212121212121212121212121212121212121',
'hex'
);
const salt = Buffer.from(
'1111111111111111111111111111111111111111111111111111111111111111',
'hex'
);
it('should initalize with the key and salt', () => {
cipher.initSalt(key, salt);
assert.bufferEqual(cipher.key, key);
assert.bufferEqual(cipher.salt, salt);
});
it('should rotate the secret key', () => {
cipher.rotateKey();
assert.bufferEqual(
cipher.key,
Buffer.from(
'0b579ba44366e4d49ac7a44a8203925cb6d610e950aee7a23c47a5448173af11',
'hex'
)
);
assert.bufferEqual(
cipher.salt,
Buffer.from(
'be23775b41e7c67d1ec6dcfc21299f32461e145d4164f65943b4b99fcaff6dee',
'hex'
)
);
assert.strictEqual(cipher.nonce, 0);
});
it('should properly encrypt given text and empty ad', () => {
// Reset the cipher
const cipher = new CipherState();
cipher.initSalt(key, salt);
const hello = Buffer.from('hello', 'ascii');
const tag = cipher.encrypt(hello);
assert.bufferEqual(
tag,
Buffer.from('f11ae60b9df4c6ea25aea58ce1b6df83', 'hex')
);
assert.bufferEqual(hello, Buffer.from('0935b4c530', 'hex'));
// Round 2
const hello2 = Buffer.from('hello', 'ascii');
const tag2 = cipher.encrypt(hello2);
assert.bufferEqual(
tag2,
Buffer.from('d840242a1e817cd8374d45fb5621a5fc', 'hex')
);
assert.bufferEqual(hello2, Buffer.from('74898781da', 'hex'));
});
it('should properly encrypt given text and ad', () => {
// Reset the cipher
const cipher = new CipherState();
cipher.initSalt(key, salt);
const hello = Buffer.from('hello', 'ascii');
const ad = Buffer.from('222222222222222222222222222222222222', 'hex');
const tag = cipher.encrypt(hello, ad);
assert.bufferEqual(
tag,
Buffer.from('81ad416f62157481c8af8ace16b64e15', 'hex')
);
assert.bufferEqual(hello, Buffer.from('0935b4c530', 'hex'));
const hello2 = Buffer.from('hello', 'ascii');
const tag2 = cipher.encrypt(hello2, ad);
assert.bufferEqual(
tag2,
Buffer.from('df3f8257977dfb8d283c6fb149d2d49d', 'hex')
);
assert.bufferEqual(hello2, Buffer.from('74898781da', 'hex'));
});
it('should rotate key after encryption', () => {
const cipher = new CipherState();
cipher.initSalt(key, salt);
const hello = Buffer.from('hello', 'ascii');
cipher.nonce = 999;
cipher.encrypt(hello);
assert.strictEqual(cipher.nonce, 0);
assert.bufferEqual(
cipher.key,
Buffer.from(
'0b579ba44366e4d49ac7a44a8203925cb6d610e950aee7a23c47a5448173af11',
'hex'
)
);
assert.bufferEqual(
cipher.salt,
Buffer.from(
'be23775b41e7c67d1ec6dcfc21299f32461e145d4164f65943b4b99fcaff6dee',
'hex'
)
);
});
it('should decrypt encrypted text', () => {
const encryptionCipher = new CipherState();
encryptionCipher.initSalt(key, salt);
const decryptionCipher = new CipherState();
decryptionCipher.initSalt(key, salt);
const hello = Buffer.from('hello', 'ascii');
const tag = encryptionCipher.encrypt(hello);
assert(decryptionCipher.decrypt(hello, tag));
});
it('should decrypt encrypted text throughout key rotation', () => {
const encryptionCipher = new CipherState();
encryptionCipher.initSalt(key, salt);
const decryptionCipher = new CipherState();
decryptionCipher.initSalt(key, salt);
for (let i = 0; i <= ROTATION_INTERVAL + 1; i++) {
const hello = Buffer.from('hello', 'ascii');
const tag = encryptionCipher.encrypt(hello);
assert(decryptionCipher.decrypt(hello, tag));
}
});
});
describe('Brontide', function() {
it('should test brontide exchange', () => {
const epriv1 =
'1212121212121212121212121212121212121212121212121212121212121212';
const lspriv1 =
'1111111111111111111111111111111111111111111111111111111111111111';
const rspub1 =
'028d7500dd4c12685d1f568b4c2b5048e8534b873319f3a8daa612b469132ec7f7';
const epriv2 =
'2222222222222222222222222222222222222222222222222222222222222222';
const lspriv2 =
'2121212121212121212121212121212121212121212121212121212121212121';
const initiator = new Brontide();
const responder = new Brontide();
initiator.generateKey = () => Buffer.from(epriv1, 'hex');
responder.generateKey = () => Buffer.from(epriv2, 'hex');
initiator.initState(true, PROLOGUE,
Buffer.from(lspriv1, 'hex'),
Buffer.from(rspub1, 'hex'));
responder.initState(false, PROLOGUE,
Buffer.from(lspriv2, 'hex'),
null);
responder.recvActOne(initiator.genActOne());
initiator.recvActTwo(responder.genActTwo());
responder.recvActThree(initiator.genActThree());
assert.strictEqual(
initiator.sendCipher.key.toString('hex'),
'1f33627bc124e43ab1024fded2f5c0d6730430f3f4cb85172b10e77c055b3b65');
assert.strictEqual(
initiator.recvCipher.key.toString('hex'),
'5b943fc7215b1d55f7b440d43ad0057d6ef1cfde0e12ab69b1db6b4578e84469');
assert.strictEqual(
responder.recvCipher.key.toString('hex'),
'1f33627bc124e43ab1024fded2f5c0d6730430f3f4cb85172b10e77c055b3b65');
assert.strictEqual(
responder.sendCipher.key.toString('hex'),
'5b943fc7215b1d55f7b440d43ad0057d6ef1cfde0e12ab69b1db6b4578e84469');
for (let i = 0; i <= 1001; i++) {
const packet = initiator.write(HELLO);
switch (i) {
case 0:
assert.strictEqual(packet.toString('hex'), ''
+ '186a811dd5ebcd7c79b728cc8b72178ef5f8a44'
+ '7efac0f9b5477046ce72596296844e1702fe463');
break;
case 1:
assert.strictEqual(packet.toString('hex'), ''
+ 'e338507655712eaa0ddc2f8d408599e80a0e266'
+ '2afc110add447e6a0ed512c46a9bdacd4cb946e');
break;
case 500:
assert.strictEqual(packet.toString('hex'), ''
+ '46aee83987990b46271f678d1303d3e94ba4c45'
+ 'bb20d23ec21ca2b5f6de5cdfdad83183569bea5');
break;
case 501:
assert.strictEqual(packet.toString('hex'), ''
+ '2a05bf99a1815b4781c1ac27547755c8a3ba86e'
+ 'de8c309880e6ab866cfa233036924769652601e');
break;
case 1000:
assert.strictEqual(packet.toString('hex'), ''
+ 'bd2be824ec969430f9c4a4bd34eef8bbee4811d'
+ 'c287f98bbb718abbd5c8b78a59dc1eaf0d74375');
break;
case 1001:
assert.strictEqual(packet.toString('hex'), ''
+ 'b837d23ea6d5de0fe380c91abe9110ce519791d'
+ '533ed151ddab4d9172c5561457dda713bfb7ce0');
break;
}
const msg = responder.read(packet);
assert.strictEqual(msg.toString('hex'), HELLO.toString('hex'));
}
});
});