js-nacl/test_nacl.js

Emscripten-compiled Javascript version of NaCl, the Networking and Cryptography library.

function do_tests(nacl, output) {
    output("Starting...");

    if ("c3a5c3a4c3b6" !== nacl.to_hex(nacl.encode_utf8("\xe5\xe4\xf6"))) {
	alert("UTF-8 encoding isn't working properly");
    }

    output(nacl.to_hex(nacl.crypto_hash_string("hello")));
    output(nacl.to_hex(nacl.crypto_hash_sha256(nacl.encode_utf8("hello"))));

    var kp = nacl.crypto_box_keypair_from_seed(nacl.encode_utf8("hello"));
    output("Box PK: " + nacl.to_hex(kp.boxPk));
    output("Box SK: " + nacl.to_hex(kp.boxSk));
    var selfShared = nacl.crypto_box_precompute(kp.boxPk, kp.boxSk);
    output("Self-shared: " + nacl.to_hex(selfShared.boxK));

    output("5 random bytes: " + nacl.to_hex(nacl.random_bytes(5)));

    var n = nacl.crypto_box_random_nonce();
    output("Nonce: " + nacl.to_hex(n));

    var c = nacl.crypto_box_precomputed(nacl.encode_utf8("box test"), n, selfShared);
    output("Ciphertext: " + nacl.to_hex(c));
    var m = nacl.crypto_box_open_precomputed(c, n, selfShared);
    output("Plaintext: " + nacl.decode_utf8(m));

    c = nacl.crypto_box(nacl.encode_utf8("box test"), n, kp.boxPk, kp.boxSk);
    output("Ciphertext: " + nacl.to_hex(c));
    m = nacl.crypto_box_open(c, n, kp.boxPk, kp.boxSk);
    output("Plaintext: " + nacl.decode_utf8(m));
    output("");

    n = new Uint8Array(nacl.crypto_stream_NONCEBYTES);
    k = new Uint8Array(nacl.crypto_stream_KEYBYTES);
    output("Stream: " + nacl.to_hex(nacl.crypto_stream(10, n, k)));
    c = nacl.crypto_stream_xor(nacl.encode_utf8("hello"), n, k);
    output("Ciphertext: " + nacl.to_hex(c));
    m = nacl.crypto_stream_xor(c, n, k);
    output("Plaintext: " + nacl.decode_utf8(m));

    var authkey = nacl.crypto_hash(nacl.encode_utf8("hello")).subarray(0, nacl.crypto_onetimeauth_KEYBYTES);
    var auth = nacl.crypto_onetimeauth(nacl.encode_utf8("hello"), authkey);
    output("Auth key:      " + nacl.to_hex(authkey));
    output("Authenticator: " + nacl.to_hex(auth));
    output("True: " + nacl.crypto_onetimeauth_verify(auth, nacl.encode_utf8("hello"), authkey));
    output("False: " + nacl.crypto_onetimeauth_verify(auth, nacl.encode_utf8("hellp"), authkey));
    output("False: " + nacl.crypto_onetimeauth_verify(auth.subarray(1), nacl.encode_utf8("hello"), authkey));
    auth[0] = auth[0] + 1;
    output("False: " + nacl.crypto_onetimeauth_verify(auth, nacl.encode_utf8("hello"), authkey));
    output("");

    var authkey = nacl.crypto_hash(nacl.encode_utf8("hello")).subarray(0, nacl.crypto_auth_KEYBYTES);
    var auth = nacl.crypto_auth(nacl.encode_utf8("hello"), authkey);
    output("Auth key:      " + nacl.to_hex(authkey));
    output("Authenticator: " + nacl.to_hex(auth));
    output("True: " + nacl.crypto_auth_verify(auth, nacl.encode_utf8("hello"), authkey));
    output("False: " + nacl.crypto_auth_verify(auth, nacl.encode_utf8("hellp"), authkey));
    output("False: " + nacl.crypto_auth_verify(auth.subarray(1), nacl.encode_utf8("hello"), authkey));
    auth[0] = auth[0] + 1;
    output("False: " + nacl.crypto_auth_verify(auth, nacl.encode_utf8("hello"), authkey));
    output("");

    n = nacl.crypto_secretbox_random_nonce();
    var secretboxkey = nacl.crypto_hash(nacl.encode_utf8("hello")).subarray(0, nacl.crypto_secretbox_KEYBYTES);
    output("Nonce: " + nacl.to_hex(n));
    c = nacl.crypto_secretbox(nacl.encode_utf8("hello"), n, secretboxkey);
    output("Ciphertext: " + nacl.to_hex(c));
    m = nacl.crypto_secretbox_open(c, n, secretboxkey);
    output("Plaintext: " + nacl.decode_utf8(m));
    output("");

    kp = nacl.crypto_sign_keypair_from_seed(nacl.crypto_hash_string("This is my passphrase").subarray(0, 32));
    output("Signing PK: " + nacl.to_hex(kp.signPk));
    output("Signing SK: " + nacl.to_hex(kp.signSk));
    c = nacl.crypto_sign(nacl.encode_utf8("message"), kp.signSk);
    output("Signed  message: " + nacl.to_hex(c));
    output("Signed  message: " + nacl.decode_latin1(c));
    m = nacl.crypto_sign_open(c, kp.signPk);
    output("Opened  message: " + nacl.decode_utf8(m));
    c = nacl.decode_latin1(c);
    c = c.substring(0, 35) + '!' + c.substring(36);
    c = nacl.encode_latin1(c);
    output("Corrupt message: " + nacl.decode_latin1(c));
    m = nacl.crypto_sign_open(c, kp.signPk);
    output("Detected corruption: " + (m === null));
    output("");

    output("...done.");
}

// export common.js module to allow one js file for browser and node.js
if (typeof module !== 'undefined' && module.exports) {
    module.exports.do_tests = do_tests;
}