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Current File : //proc/self/root/home/ubuntu/node-v16.18.1/test/parallel/test-webcrypto-encrypt-decrypt-rsa.js
'use strict';

const common = require('../common');

if (!common.hasCrypto)
  common.skip('missing crypto');

const assert = require('assert');
const { subtle } = require('crypto').webcrypto;

const {
  passing
} = require('../fixtures/crypto/rsa')();

async function importVectorKey(
  publicKeyBuffer,
  privateKeyBuffer,
  name,
  hash,
  publicUsages,
  privateUsages) {
  const [publicKey, privateKey] = await Promise.all([
    subtle.importKey(
      'spki', publicKeyBuffer, { name, hash }, false, publicUsages),
    subtle.importKey(
      'pkcs8', privateKeyBuffer, { name, hash }, false, privateUsages),
  ]);

  return { publicKey, privateKey };
}

async function testDecryption({ ciphertext,
                                algorithm,
                                plaintext,
                                hash,
                                publicKeyBuffer,
                                privateKeyBuffer }) {
  if (ciphertext === undefined)
    return;

  const {
    privateKey
  } = await importVectorKey(
    publicKeyBuffer,
    privateKeyBuffer,
    algorithm.name,
    hash,
    ['encrypt'],
    ['decrypt']);

  const encodedPlaintext = Buffer.from(plaintext).toString('hex');
  const result = await subtle.decrypt(algorithm, privateKey, ciphertext);

  assert.strictEqual(
    Buffer.from(result).toString('hex'),
    encodedPlaintext);

  const ciphercopy = Buffer.from(ciphertext);

  // Modifying the ciphercopy after calling decrypt should just work
  const result2 = await subtle.decrypt(algorithm, privateKey, ciphercopy);
  ciphercopy[0] = 255 - ciphercopy[0];

  assert.strictEqual(
    Buffer.from(result2).toString('hex'),
    encodedPlaintext);
}

async function testEncryption(
  {
    ciphertext,
    algorithm,
    plaintext,
    hash,
    publicKeyBuffer,
    privateKeyBuffer
  },
  modify = false) {
  const {
    publicKey,
    privateKey
  } = await importVectorKey(
    publicKeyBuffer,
    privateKeyBuffer,
    algorithm.name,
    hash,
    ['encrypt'],
    ['decrypt']);

  if (modify)
    plaintext = Buffer.from(plaintext);  // make a copy

  const encodedPlaintext = Buffer.from(plaintext).toString('hex');

  const result = await subtle.encrypt(algorithm, publicKey, plaintext);
  if (modify)
    plaintext[0] = 255 - plaintext[0];

  assert.strictEqual(
    result.byteLength * 8,
    privateKey.algorithm.modulusLength);

  const out = await subtle.decrypt(algorithm, privateKey, result);

  assert.strictEqual(
    Buffer.from(out).toString('hex'),
    encodedPlaintext);
}

async function testEncryptionLongPlaintext({ algorithm,
                                             plaintext,
                                             hash,
                                             publicKeyBuffer,
                                             privateKeyBuffer }) {
  const {
    publicKey,
  } = await importVectorKey(
    publicKeyBuffer,
    privateKeyBuffer,
    algorithm.name,
    hash,
    ['encrypt'],
    ['decrypt']);
  const newplaintext = new Uint8Array(plaintext.byteLength + 1);
  newplaintext.set(plaintext, 0);
  newplaintext[plaintext.byteLength] = 32;

  return assert.rejects(
    subtle.encrypt(algorithm, publicKey, newplaintext), {
      name: 'OperationError'
    });
}

async function testEncryptionWrongKey({ algorithm,
                                        plaintext,
                                        hash,
                                        publicKeyBuffer,
                                        privateKeyBuffer }) {
  const {
    privateKey,
  } = await importVectorKey(
    publicKeyBuffer,
    privateKeyBuffer,
    algorithm.name,
    hash,
    ['encrypt'],
    ['decrypt']);
  return assert.rejects(
    subtle.encrypt(algorithm, privateKey, plaintext), {
      message: /The requested operation is not valid/
    });
}

async function testEncryptionBadUsage({ algorithm,
                                        plaintext,
                                        hash,
                                        publicKeyBuffer,
                                        privateKeyBuffer }) {
  const {
    publicKey,
  } = await importVectorKey(
    publicKeyBuffer,
    privateKeyBuffer,
    algorithm.name,
    hash,
    ['wrapKey'],
    ['decrypt']);
  return assert.rejects(
    subtle.encrypt(algorithm, publicKey, plaintext), {
      message: /The requested operation is not valid/
    });
}

async function testDecryptionWrongKey({ ciphertext,
                                        algorithm,
                                        hash,
                                        publicKeyBuffer,
                                        privateKeyBuffer }) {
  if (ciphertext === undefined)
    return;

  const {
    publicKey
  } = await importVectorKey(
    publicKeyBuffer,
    privateKeyBuffer,
    algorithm.name,
    hash,
    ['encrypt'],
    ['decrypt']);

  return assert.rejects(
    subtle.decrypt(algorithm, publicKey, ciphertext), {
      message: /The requested operation is not valid/
    });
}

async function testDecryptionBadUsage({ ciphertext,
                                        algorithm,
                                        hash,
                                        publicKeyBuffer,
                                        privateKeyBuffer }) {
  if (ciphertext === undefined)
    return;

  const {
    publicKey
  } = await importVectorKey(
    publicKeyBuffer,
    privateKeyBuffer,
    algorithm.name,
    hash,
    ['encrypt'],
    ['unwrapKey']);

  return assert.rejects(
    subtle.decrypt(algorithm, publicKey, ciphertext), {
      message: /The requested operation is not valid/
    });
}

(async function() {
  const variations = [];

  // Test decryption
  passing.forEach(async (vector) => {
    variations.push(testDecryption(vector));
    variations.push(testDecryptionWrongKey(vector));
    variations.push(testDecryptionBadUsage(vector));
    variations.push(testEncryption(vector));
    variations.push(testEncryption(vector, true));
    variations.push(testEncryptionLongPlaintext(vector));
    variations.push(testEncryptionWrongKey(vector));
    variations.push(testEncryptionBadUsage(vector));
  });

  await Promise.all(variations);
})().then(common.mustCall());

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