denoland-deno/cli/tests/unit/webcrypto_test.ts

import { assert, assertEquals, unitTest } from "./test_util.ts";

// TODO(@littledivy): Remove this when we enable WPT for sign_verify
unitTest(async function testSignVerify() {
  const subtle = window.crypto.subtle;
  assert(subtle);
  for (const algorithm of ["RSA-PSS", "RSASSA-PKCS1-v1_5"]) {
    for (
      const hash of [
        "SHA-1",
        "SHA-256",
        "SHA-384",
        "SHA-512",
      ]
    ) {
      const keyPair = await subtle.generateKey(
        {
          name: algorithm,
          modulusLength: 2048,
          publicExponent: new Uint8Array([1, 0, 1]),
          hash,
        },
        true,
        ["sign", "verify"],
      );

      const data = new Uint8Array([1, 2, 3]);
      const signAlgorithm = { name: algorithm, saltLength: 32 };

      const signature = await subtle.sign(
        signAlgorithm,
        keyPair.privateKey,
        data,
      );

      assert(signature);
      assert(signature.byteLength > 0);
      assert(signature.byteLength % 8 == 0);
      assert(signature instanceof ArrayBuffer);

      const verified = await subtle.verify(
        signAlgorithm,
        keyPair.publicKey,
        signature,
        data,
      );
      assert(verified);
    }
  }
});

unitTest(async function testGenerateRSAKey() {
  const subtle = window.crypto.subtle;
  assert(subtle);

  const keyPair = await subtle.generateKey(
    {
      name: "RSA-PSS",
      modulusLength: 2048,
      publicExponent: new Uint8Array([1, 0, 1]),
      hash: "SHA-256",
    },
    true,
    ["sign", "verify"],
  );

  assert(keyPair.privateKey);
  assert(keyPair.publicKey);
  assertEquals(keyPair.privateKey.extractable, true);
  assert(keyPair.privateKey.usages.includes("sign"));
});

unitTest(async function testGenerateHMACKey() {
  const key = await window.crypto.subtle.generateKey(
    {
      name: "HMAC",
      hash: "SHA-512",
    },
    true,
    ["sign", "verify"],
  );

  assert(key);
  assertEquals(key.extractable, true);
  assert(key.usages.includes("sign"));
});

unitTest(async function testSignECDSA() {
  const key = await window.crypto.subtle.generateKey(
    {
      name: "ECDSA",
      namedCurve: "P-384",
    },
    true,
    ["sign", "verify"],
  );

  const encoder = new TextEncoder();
  const encoded = encoder.encode("Hello, World!");
  const signature = await window.crypto.subtle.sign(
    { name: "ECDSA", hash: "SHA-384" },
    key.privateKey,
    encoded,
  );

  assert(signature);
});

// https://github.com/denoland/deno/issues/11313
unitTest(async function testSignRSASSAKey() {
  const subtle = window.crypto.subtle;
  assert(subtle);

  const keyPair = await subtle.generateKey(
    {
      name: "RSASSA-PKCS1-v1_5",
      modulusLength: 2048,
      publicExponent: new Uint8Array([1, 0, 1]),
      hash: "SHA-256",
    },
    true,
    ["sign", "verify"],
  );

  assert(keyPair.privateKey);
  assert(keyPair.publicKey);
  assertEquals(keyPair.privateKey.extractable, true);
  assert(keyPair.privateKey.usages.includes("sign"));

  const encoder = new TextEncoder();
  const encoded = encoder.encode("Hello, World!");

  const signature = await window.crypto.subtle.sign(
    { name: "RSASSA-PKCS1-v1_5" },
    keyPair.privateKey,
    encoded,
  );

  assert(signature);
});