Java 类org.bouncycastle.openpgp.operator.PGPDataEncryptorBuilder 实例源码

/**
   * Base constructor with the option to turn on formatting for PGP 2.6.x compatibility.
   *
   * @param encryptorBuilder builder to create actual data encryptor.
   * @param oldFormat PGP 2.6.x compatibility required.
   */
public PGPEncryptedDataGenerator(PGPDataEncryptorBuilder encryptorBuilder, boolean oldFormat)
{
    this.dataEncryptorBuilder = encryptorBuilder;
    this.oldFormat = oldFormat;

    this.defAlgorithm = dataEncryptorBuilder.getAlgorithm();
    this.rand = dataEncryptorBuilder.getSecureRandom();
}

/**
   * Base constructor with the option to turn on formatting for PGP 2.6.x compatibility.
   *
   * @param encryptorBuilder builder to create actual data encryptor.
   * @param oldFormat PGP 2.6.x compatibility required.
   */
public PGPEncryptedDataGenerator(PGPDataEncryptorBuilder encryptorBuilder, boolean oldFormat)
{
    this.dataEncryptorBuilder = encryptorBuilder;
    this.oldFormat = oldFormat;

    this.defAlgorithm = dataEncryptorBuilder.getAlgorithm();
    this.rand = dataEncryptorBuilder.getSecureRandom();
}

/**
   * Base constructor with the option to turn on formatting for PGP 2.6.x compatibility.
   *
   * @param encryptorBuilder builder to create actual data encryptor.
   * @param oldFormat PGP 2.6.x compatibility required.
   */
public PGPEncryptedDataGenerator(PGPDataEncryptorBuilder encryptorBuilder, boolean oldFormat)
{
    this.dataEncryptorBuilder = encryptorBuilder;
    this.oldFormat = oldFormat;

    this.defAlgorithm = dataEncryptorBuilder.getAlgorithm();
    this.rand = dataEncryptorBuilder.getSecureRandom();
}

/**
   * Base constructor with the option to turn on formatting for PGP 2.6.x compatibility.
   *
   * @param encryptorBuilder builder to create actual data encryptor.
   * @param oldFormat PGP 2.6.x compatibility required.
   */
public PGPEncryptedDataGenerator(PGPDataEncryptorBuilder encryptorBuilder, boolean oldFormat)
{
    this.dataEncryptorBuilder = encryptorBuilder;
    this.oldFormat = oldFormat;

    this.defAlgorithm = dataEncryptorBuilder.getAlgorithm();
    this.rand = dataEncryptorBuilder.getSecureRandom();
}

/**
   * Base constructor with the option to turn on formatting for PGP 2.6.x compatibility.
   *
   * @param encryptorBuilder builder to create actual data encryptor.
   * @param oldFormat PGP 2.6.x compatibility required.
   */
public PGPEncryptedDataGenerator(PGPDataEncryptorBuilder encryptorBuilder, boolean oldFormat)
{
    this.dataEncryptorBuilder = encryptorBuilder;
    this.oldFormat = oldFormat;

    this.defAlgorithm = dataEncryptorBuilder.getAlgorithm();
    this.rand = dataEncryptorBuilder.getSecureRandom();
}

/**
   * Base constructor with the option to turn on formatting for PGP 2.6.x compatibility.
   *
   * @param encryptorBuilder builder to create actual data encryptor.
   * @param oldFormat PGP 2.6.x compatibility required.
   */
public PGPEncryptedDataGenerator(PGPDataEncryptorBuilder encryptorBuilder, boolean oldFormat)
{
    this.dataEncryptorBuilder = encryptorBuilder;
    this.oldFormat = oldFormat;

    this.defAlgorithm = dataEncryptorBuilder.getAlgorithm();
    this.rand = dataEncryptorBuilder.getSecureRandom();
}

@Test
public void encryptAndDecrypt() throws Exception {
    // both keys have property encryptionKey==true
    final String[] keyIds = {
            "d7a92a24aa97ddbd", // master-key
            "a58da7d810b74edf" // sub-key
    };

    for (final String keyId : keyIds) {
        final PGPDataEncryptorBuilder encryptorBuilder = new BcPGPDataEncryptorBuilder(SymmetricKeyAlgorithmTags.TWOFISH);
        final PGPEncryptedDataGenerator encryptedDataGenerator = new PGPEncryptedDataGenerator(encryptorBuilder);
        final PGPKeyEncryptionMethodGenerator keyEncryptionMethodGenerator = new BcPublicKeyKeyEncryptionMethodGenerator(
                getPgpPublicKeyOrFail(bytesToLong(decodeHexStr(keyId))));

        encryptedDataGenerator.addMethod(keyEncryptionMethodGenerator);

        final byte[] plain = new byte[1 + random.nextInt(1024 * 1024)];
        random.nextBytes(plain);

        final File encryptedFile = File.createTempFile("encrypted_", ".tmp");
        try (final OutputStream encryptedOut = new FileOutputStream(encryptedFile);) {
            try (final OutputStream plainOut = encryptedDataGenerator.open(encryptedOut, new byte[1024 * 16]);) {
                plainOut.write(plain);
            }
        }

        final byte[] decrypted;
        try (InputStream in = new FileInputStream(encryptedFile)) {
            final PGPEncryptedDataList encryptedDataList = new PGPEncryptedDataList(new BCPGInputStream(in));
            final Iterator<?> encryptedDataObjects = encryptedDataList.getEncryptedDataObjects();
            assertThat(encryptedDataObjects.hasNext()).isTrue();
            final PGPPublicKeyEncryptedData encryptedData = (PGPPublicKeyEncryptedData) encryptedDataObjects.next();
            assertThat(encryptedDataObjects.hasNext()).isFalse();

            final PublicKeyDataDecryptorFactory dataDecryptorFactory = new BcPublicKeyDataDecryptorFactory(
                    getPgpPrivateKeyOrFail(encryptedData.getKeyID(), "test12345".toCharArray()));

            try (InputStream plainIn = encryptedData.getDataStream(dataDecryptorFactory);) {
                final ByteArrayOutputStream out = new ByteArrayOutputStream();
                transferStreamData(plainIn, out);
                decrypted = out.toByteArray();
            }
        }

        assertThat(decrypted).isEqualTo(plain);

        encryptedFile.delete(); // delete it, if this test did not fail
    }
}

/**
   * Base constructor.
   *
   * @param encryptorBuilder builder to create actual data encryptor.
   */
public PGPEncryptedDataGenerator(PGPDataEncryptorBuilder encryptorBuilder)
{
    this(encryptorBuilder, false);
}

/**
   * Base constructor.
   *
   * @param encryptorBuilder builder to create actual data encryptor.
   */
public PGPEncryptedDataGenerator(PGPDataEncryptorBuilder encryptorBuilder)
{
    this(encryptorBuilder, false);
}

/**
   * Base constructor.
   *
   * @param encryptorBuilder builder to create actual data encryptor.
   */
public PGPEncryptedDataGenerator(PGPDataEncryptorBuilder encryptorBuilder)
{
    this(encryptorBuilder, false);
}

/**
   * Base constructor.
   *
   * @param encryptorBuilder builder to create actual data encryptor.
   */
public PGPEncryptedDataGenerator(PGPDataEncryptorBuilder encryptorBuilder)
{
    this(encryptorBuilder, false);
}

/**
   * Base constructor.
   *
   * @param encryptorBuilder builder to create actual data encryptor.
   */
public PGPEncryptedDataGenerator(PGPDataEncryptorBuilder encryptorBuilder)
{
    this(encryptorBuilder, false);
}

/**
   * Base constructor.
   *
   * @param encryptorBuilder builder to create actual data encryptor.
   */
public PGPEncryptedDataGenerator(PGPDataEncryptorBuilder encryptorBuilder)
{
    this(encryptorBuilder, false);
}