Function assert_goodCryptoKey

test/fixtures/wpt/WebCryptoAPI/util/helpers.js:91–174

(key, algorithm, extractable, usages, kind)

// Is key a CryptoKey object with correct algorithm, extractable, and usages?
// Is it a secret, private, or public kind of key?
function assert_goodCryptoKey(key, algorithm, extractable, usages, kind) {
    if (typeof algorithm === "string") {
        algorithm = { name: algorithm };
    }

    var correctUsages = [];

    var registeredAlgorithmName;
    registeredAlgorithmNames.forEach(function(name) {
        if (name.toUpperCase() === algorithm.name.toUpperCase()) {
            registeredAlgorithmName = name;
        }
    });

    assert_equals(key.constructor, CryptoKey, "Is a CryptoKey");
    assert_equals(key.type, kind, "Is a " + kind + " key");
    assert_equals(key.extractable, extractable, "Extractability is correct");

    assert_equals(key.algorithm.name, registeredAlgorithmName, "Correct algorithm name");
    if (key.algorithm.name.toUpperCase() === "HMAC" && algorithm.length === undefined) {
        switch (key.algorithm.hash.name.toUpperCase()) {
            case 'SHA-1':
            case 'SHA-256':
                assert_equals(key.algorithm.length, 512, "Correct length");
                break;
            case 'SHA-384':
            case 'SHA-512':
                assert_equals(key.algorithm.length, 1024, "Correct length");
                break;
            default:
                assert_unreached("Unrecognized hash");
        }
    } else if (key.algorithm.name.toUpperCase().startsWith("KMAC") && algorithm.length === undefined) {
        switch (key.algorithm.name.toUpperCase()) {
            case 'KMAC128':
                assert_equals(key.algorithm.length, 128, "Correct length");
                break;
            case 'KMAC256':
                assert_equals(key.algorithm.length, 256, "Correct length");
                break;
        }
    } else {
        assert_equals(key.algorithm.length, algorithm.length, "Correct length");
    }
    if (["HMAC", "RSASSA-PKCS1-v1_5", "RSA-PSS"].includes(registeredAlgorithmName)) {
        assert_equals(key.algorithm.hash.name.toUpperCase(), algorithm.hash.toUpperCase(), "Correct hash function");
    }

    if (/^(?:Ed|X)(?:25519|448)$/.test(key.algorithm.name)) {
        assert_false('namedCurve' in key.algorithm, "Does not have a namedCurve property");
    }

    // usages is expected to be provided for a key pair, but we are checking
    // only a single key. The publicKey and privateKey portions of a key pair
    // recognize only some of the usages appropriate for a key pair.
    if (key.type === "public") {
        ["encrypt", "verify", "wrapKey", "encapsulateBits", "encapsulateKey"].forEach(function(usage) {
            if (usages.includes(usage)) {