83 lines
2.7 KiB
JavaScript
83 lines
2.7 KiB
JavaScript
'use strict';
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describe('Crypto', function() {
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it('roundtrip symmetric encryption succeeds', async function() {
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var message = 'this is my message';
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var plaintext = new dcodeIO.ByteBuffer.wrap(message, 'binary').toArrayBuffer();
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var key = textsecure.crypto.getRandomBytes(32);
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var encrypted = await Signal.Crypto.encryptSymmetric(key, plaintext);
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var decrypted = await Signal.Crypto.decryptSymmetric(key, encrypted);
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var equal = Signal.Crypto.constantTimeEqual(plaintext, decrypted);
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if (!equal) {
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throw new Error('The output and input did not match!');
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}
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});
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it('roundtrip fails if nonce is modified', async function() {
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var message = 'this is my message';
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var plaintext = new dcodeIO.ByteBuffer.wrap(message, 'binary').toArrayBuffer();
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var key = textsecure.crypto.getRandomBytes(32);
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var encrypted = await Signal.Crypto.encryptSymmetric(key, plaintext);
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var uintArray = new Uint8Array(encrypted);
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uintArray[2] = 9;
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try {
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var decrypted = await Signal.Crypto.decryptSymmetric(key, uintArray.buffer);
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} catch (error) {
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assert.strictEqual(
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error.message,
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'decryptSymmetric: Failed to decrypt; MAC verification failed'
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);
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return;
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}
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throw new Error('Expected error to be thrown');
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});
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it('fails if mac is modified', async function() {
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var message = 'this is my message';
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var plaintext = new dcodeIO.ByteBuffer.wrap(message, 'binary').toArrayBuffer();
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var key = textsecure.crypto.getRandomBytes(32);
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var encrypted = await Signal.Crypto.encryptSymmetric(key, plaintext);
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var uintArray = new Uint8Array(encrypted);
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uintArray[uintArray.length - 3] = 9;
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try {
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var decrypted = await Signal.Crypto.decryptSymmetric(key, uintArray.buffer);
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} catch (error) {
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assert.strictEqual(
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error.message,
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'decryptSymmetric: Failed to decrypt; MAC verification failed'
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);
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return;
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}
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throw new Error('Expected error to be thrown');
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});
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it('fails if encrypted contents are modified', async function() {
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var message = 'this is my message';
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var plaintext = new dcodeIO.ByteBuffer.wrap(message, 'binary').toArrayBuffer();
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var key = textsecure.crypto.getRandomBytes(32);
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var encrypted = await Signal.Crypto.encryptSymmetric(key, plaintext);
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var uintArray = new Uint8Array(encrypted);
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uintArray[35] = 9;
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try {
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var decrypted = await Signal.Crypto.decryptSymmetric(key, uintArray.buffer);
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} catch (error) {
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assert.strictEqual(
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error.message,
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'decryptSymmetric: Failed to decrypt; MAC verification failed'
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);
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return;
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}
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throw new Error('Expected error to be thrown');
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});
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});
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