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/*---
includes: [compatFs.js, compatBuffer.js, compatWebcrypto.js, webCryptoUtils.js, runTsuite.js]
flags: [async]
---*/
async function testDeriveBits(params) {
let aliceKeyPair = await load_key_pair(params.pair[0]);
let bobKeyPair = await load_key_pair(params.pair[1]);
let ecdhParams = { name: "ECDH", public: bobKeyPair.publicKey };
let result = await crypto.subtle.deriveBits(ecdhParams, aliceKeyPair.privateKey, params.length);
result = Buffer.from(result).toString('base64url');
if (result !== params.expected) {
throw Error(`ECDH deriveBits failed expected: "${params.expected}" vs "${result}"`);
}
let ecdhParamsReverse = { name: "ECDH", public: aliceKeyPair.publicKey };
let secondResult = await crypto.subtle.deriveBits(ecdhParamsReverse, bobKeyPair.privateKey, params.length);
secondResult = Buffer.from(secondResult).toString('base64url');
if (secondResult !== params.expected) {
throw Error(`ECDH reverse deriveBits failed expected: "${params.expected}" vs "${secondResult}"`);
}
return "SUCCESS";
}
function deriveCurveFromName(name) {
if (/secp384r1/.test(name)) {
return "P-384";
}
if (/secp521r1/.test(name)) {
return "P-521";
}
return "P-256";
}
async function load_key_pair(name) {
let pair = {};
let pem = fs.readFileSync(`test/webcrypto/${name}.pkcs8`);
let key = pem_to_der(pem, "private");
pair.privateKey = await crypto.subtle.importKey("pkcs8", key,
{ name: "ECDH", namedCurve: deriveCurveFromName(name) },
true, ["deriveBits", "deriveKey"]);
pem = fs.readFileSync(`test/webcrypto/${name}.spki`);
key = pem_to_der(pem, "public");
pair.publicKey = await crypto.subtle.importKey("spki", key,
{ name: "ECDH", namedCurve: deriveCurveFromName(name) },
true, []);
return pair;
}
let ecdh_bits_tsuite = {
name: "ECDH-DeriveBits",
skip: () => (!has_buffer() || !has_webcrypto()),
T: testDeriveBits,
opts: {
pair: ['ec', 'ec2'],
length: 256
},
tests: [
{ expected: "mMAGhQ_1Wr3u6Y6VyzVuolCA7x8RM-15e73laLJMUok" },
{ pair: ['ec_secp384r1', 'ec2_secp384r1'],
expected: "4OmeRzZZ53eCgn09zI2TumH4n4Zp-nfHsfZTOBEu8Hg" },
{ pair: ['ec_secp384r1', 'ec2_secp384r1'],
length: 384,
expected: "4OmeRzZZ53eCgn09zI2TumH4n4Zp-nfHsfZTOBEu8HjB0GF2YrOw5dCUgavKZaNR" },
{ pair: ['ec_secp521r1', 'ec2_secp521r1'],
length: 528,
expected: "ATBls20ukLQI7AJQ6LRnyD6wLDR_FDmBoAdVX5_DB_bMDe_uYMjN-jQqPTkGNIo6NOqmXMX9KNQ-AqL8aPjySMMm" },
]
};
async function testDeriveKey(params) {
let aliceKeyPair = await load_key_pair(params.pair[0]);
let bobKeyPair = await load_key_pair(params.pair[1]);
let eveKeyPair = await crypto.subtle.generateKey({ name: "ECDH", namedCurve: deriveCurveFromName(params.pair[0]) },
true, ["deriveKey", "deriveBits"]);
let ecdhParamsAlice = { name: "ECDH", public: bobKeyPair.publicKey };
let ecdhParamsBob = { name: "ECDH", public: aliceKeyPair.publicKey };
let ecdhParamsEve = { name: "ECDH", public: eveKeyPair.publicKey };
let derivedAlgorithm = { name: params.derivedAlgorithm.name };
derivedAlgorithm.length = params.derivedAlgorithm.length;
derivedAlgorithm.hash = params.derivedAlgorithm.hash;
let aliceDerivedKey = await crypto.subtle.deriveKey(ecdhParamsAlice, aliceKeyPair.privateKey,
derivedAlgorithm, params.extractable, params.usage);
if (aliceDerivedKey.extractable !== params.extractable) {
throw Error(`ECDH extractable test failed: ${params.extractable} vs ${aliceDerivedKey.extractable}`);
}
if (compareUsage(aliceDerivedKey.usages, params.usage) !== true) {
throw Error(`ECDH usage test failed: ${params.usage} vs ${aliceDerivedKey.usages}`);
}
let bobDerivedKey = await crypto.subtle.deriveKey(ecdhParamsBob, bobKeyPair.privateKey,
derivedAlgorithm, params.extractable, params.usage);
let eveDerivedKey = await crypto.subtle.deriveKey(ecdhParamsEve, eveKeyPair.privateKey,
derivedAlgorithm, params.extractable, params.usage);
if (params.extractable &&
(params.derivedAlgorithm.name === "AES-GCM"
|| params.derivedAlgorithm.name === "AES-CBC"
|| params.derivedAlgorithm.name === "AES-CTR"
|| params.derivedAlgorithm.name === "HMAC"))
{
const aliceRawKey = await crypto.subtle.exportKey("raw", aliceDerivedKey);
const bobRawKey = await crypto.subtle.exportKey("raw", bobDerivedKey);
const eveRawKey = await crypto.subtle.exportKey("raw", eveDerivedKey);
const aliceKeyData = Buffer.from(aliceRawKey).toString("base64url");
const bobKeyData = Buffer.from(bobRawKey).toString("base64url");
const eveKeyData = Buffer.from(eveRawKey).toString("base64url");
if (aliceKeyData !== bobKeyData) {
throw Error(`ECDH key symmetry test failed: keys are not equal`);
}
if (aliceKeyData !== params.expected) {
throw Error(`ECDH key symmetry test failed: expected: "${params.expected}" vs "${aliceKeyData}"`);
}
if (aliceKeyData === eveKeyData) {
throw Error(`ECDH key symmetry test failed: keys are equal`);
}
}
return "SUCCESS";
}
let ecdh_key_tsuite = {
name: "ECDH-DeriveKey",
skip: () => (!has_buffer() || !has_webcrypto()),
T: testDeriveKey,
opts: {
pair: ['ec', 'ec2'],
extractable: true,
derivedAlgorithm: {
name: "AES-GCM",
length: 256
},
expected: "mMAGhQ_1Wr3u6Y6VyzVuolCA7x8RM-15e73laLJMUok",
usage: ["encrypt", "decrypt"]
},
tests: [
{ },
{ extractable: false },
{ derivedAlgorithm: { name: "AES-CBC", length: 256 } },
{ derivedAlgorithm: { name: "AES-CTR", length: 256 } },
{ derivedAlgorithm: { name: "AES-GCM", length: 256 } },
{ derivedAlgorithm: { name: "HMAC", hash: "SHA-256", length: 256 },
usage: ["sign", "verify"] },
{ pair: ['ec_secp384r1', 'ec2_secp384r1'],
expected: "4OmeRzZZ53eCgn09zI2TumH4n4Zp-nfHsfZTOBEu8Hg" },
{ pair: ['ec_secp384r1', 'ec2_secp384r1'], extractable: false },
{ pair: ['ec_secp521r1', 'ec_secp384r1'],
exception: "TypeError: ECDH keys must use the same curve" },
{ pair: ['ec_secp521r1', 'ec2_secp521r1'],
derivedAlgorithm: { name: "AES-GCM", length: 128 },
expected: "ATBls20ukLQI7AJQ6LRnyA" },
{ pair: ['ec_secp521r1', 'ec2_secp521r1'],
derivedAlgorithm: { name: "HMAC", hash: "SHA-384", length: 512 },
expected: "ATBls20ukLQI7AJQ6LRnyD6wLDR_FDmBoAdVX5_DB_bMDe_uYMjN-jQqPTkGNIo6NOqmXMX9KNQ-AqL8aPjySA",
usage: ["sign", "verify"] }
]
};
run([
ecdh_bits_tsuite,
ecdh_key_tsuite,
])
.then($DONE, $DONE);
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