Press n or j to go to the next uncovered block, b, p or k for the previous block.
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import {
lock,
computeHmac,
keccak256, ripemd160, sha256, sha512,
pbkdf2, scrypt, scryptSync,
randomBytes
} from "../index.js";
interface Algorithm {
(...args: Array<any>): string | Uint8Array | Promise<string>;
register: (func: any) => void;
lock: () => void;
_: (...args: Array<any>) => any;
}
interface TestCase {
name: string;
params: Array<any>;
algorithm: Algorithm;
hijackTag: string;
postCheck?: (value: any) => boolean;
}
describe("test registration", function() {
let hijack = "";
function getHijack(algo: string) {
return function(...args: Array<any>) {
hijack = `hijacked ${ algo }: ${ JSON.stringify(args) }`;
return "0x42";
}
}
const tests: Array<TestCase> = [
{
name: "keccak256",
params: [ "0x" ],
hijackTag: 'hijacked keccak256: [{}]',
algorithm: keccak256
},
{
name: "sha256",
params: [ "0x" ],
hijackTag: 'hijacked sha256: [{}]',
algorithm: sha256
},
{
name: "sha512",
params: [ "0x" ],
hijackTag: 'hijacked sha512: [{}]',
algorithm: sha512
},
{
name: "ripemd160",
params: [ "0x" ],
hijackTag: 'hijacked ripemd160: [{}]',
algorithm: ripemd160
},
{
name: "pbkdf2",
params: [ "0x", "0x", 1024, 32, "sha256" ],
hijackTag: 'hijacked pbkdf2: [{},{},1024,32,"sha256"]',
algorithm: pbkdf2
},
{
name: "scryptSync",
params: [ "0x", "0x", 1024, 8, 1, 32 ],
hijackTag: 'hijacked scryptSync: [{},{},1024,8,1,32]',
algorithm: scryptSync
},
{
name: "scrypt",
params: [ "0x", "0x", 1024, 8, 1, 32 ],
hijackTag: 'hijacked scrypt: [{},{},1024,8,1,32,null]',
algorithm: scrypt
},
{
name: "computeHmac",
params: [ "sha256", "0x", "0x" ],
hijackTag: 'hijacked computeHmac: ["sha256",{},{}]',
algorithm: computeHmac
},
{
name: "randomBytes",
params: [ 32 ],
hijackTag: "hijacked randomBytes: [32]",
algorithm: randomBytes,
postCheck: (value: any) => {
return (value instanceof Uint8Array && value.length === 32);
}
}
];
tests.forEach(({ name, params, hijackTag, algorithm, postCheck }) => {
it(`swaps in hijacked callback: ${ name }`, async function() {
const initial = await algorithm(...params);
algorithm.register(getHijack(name));
assert.equal(await algorithm(...params), "0x42");
assert.equal(hijack, hijackTag);
algorithm.register(algorithm._);
if (postCheck) {
assert.ok(postCheck(await algorithm(...params)));
} else {
assert.equal(await algorithm(...params), initial);
}
});
});
it("prevents swapping after locked", function() {
lock();
tests.forEach(({ name, params, hijackTag, algorithm }) => {
assert.throws(function() {
algorithm.register(getHijack("test"));
}, function(error: any) {
return (error.message === `${ name } is locked`);
});
});
});
});
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