javax.crypto.CipherInputStream Java Examples

/**
 * 解密文件
 *
 * @param in
 */
public void doDecryptFile(InputStream in, String path) {
    if (in == null) {
        System.out.println("inputstream is null");
        return;
    }
    try {
        CipherInputStream cin = new CipherInputStream(in, mDecryptCipher);
        OutputStream outputStream = new FileOutputStream(path);
        byte[] bytes = new byte[1024];
        int length = -1;
        while ((length = cin.read(bytes)) > 0) {
            outputStream.write(bytes, 0, length);
            outputStream.flush();
        }
        cin.close();
        in.close();
        System.out.println("解密成功");
    } catch (Exception e) {
        System.out.println("解密失败");
        e.printStackTrace();
    }
}
 

static void gcm_oneReadByteCorrupt() throws Exception {

        System.out.println("Running gcm_oneReadByteCorrupt test");

        // Encrypt 100 bytes with AES/GCM/PKCS5Padding
        byte[] ct = encryptedText("GCM", 100);
        // Corrupt the encrypted message
        ct = corruptGCM(ct);
        // Create stream for decryption
        CipherInputStream in = getStream("GCM", ct);

        try {
            in.read();
            System.out.println("  Fail. No exception thrown.");
        } catch (IOException e) {
            Throwable ec = e.getCause();
            if (ec instanceof AEADBadTagException) {
                System.out.println("  Pass.");
            } else {
                System.out.println("  Fail: " + ec.getMessage());
                throw new RuntimeException(ec);
            }
        }
    }
 

static void cbc_shortStream() throws Exception {
    Cipher c;
    AlgorithmParameters params;
    byte[] read = new byte[200];

    System.out.println("Running cbc_shortStream");

    // Encrypt 97 byte with AES/CBC/PKCS5Padding
    byte[] ct = encryptedText("CBC", 97);
    // Create stream with only 96 bytes of encrypted data
    CipherInputStream in = getStream("CBC", ct, 96);

    try {
        int size = in.read(read);
        in.close();
        if (size != 80) {
            throw new RuntimeException("Fail: CipherInputStream.read() " +
                    "returned " + size + ". Should have been 80");
        }
        System.out.println("  Pass.");
    } catch (IOException e) {
        System.out.println("  Fail:  " + e.getMessage());
        throw new RuntimeException(e.getCause());
    }
}
 

static void gcm_suppressUnreadCorrupt() throws Exception {
    Cipher c;
    byte[] read = new byte[200];

    System.out.println("Running supressUnreadCorrupt test");

    // Encrypt 100 bytes with AES/GCM/PKCS5Padding
    byte[] ct = encryptedText("GCM", 100);
    // Corrupt the encrypted message
    ct = corruptGCM(ct);
    // Create stream for decryption
    CipherInputStream in = getStream("GCM", ct);

    try {
        in.close();
        System.out.println("  Pass.");
    } catch (IOException e) {
        System.out.println("  Fail: " + e.getMessage());
        throw new RuntimeException(e.getCause());
    }
}
 

private  byte[]  rsaDecrypt(byte[] encrypted) throws Exception {
    KeyStore.PrivateKeyEntry privateKeyEntry = (KeyStore.PrivateKeyEntry) keyStore.getEntry(KEY_ALIAS, null);
    Cipher output = Cipher.getInstance(RSA_MODE, "AndroidOpenSSL");
    output.init(Cipher.DECRYPT_MODE, privateKeyEntry.getPrivateKey());
    CipherInputStream cipherInputStream = new CipherInputStream(
            new ByteArrayInputStream(encrypted), output);
    ArrayList<Byte> values = new ArrayList<>();
    int nextByte;
    while ((nextByte = cipherInputStream.read()) != -1) {
        values.add((byte)nextByte);
    }

    byte[] bytes = new byte[values.size()];
    for(int i = 0; i < bytes.length; i++) {
        bytes[i] = values.get(i).byteValue();
    }
    return bytes;
}
 

/**
 * Implements int buffering type test case of the CICO SKIP test.
 *
 * @param blockNum block number to read.
 */
private void proceedSkipTestUsingIntBufferingType(CipherInputStream ciIn2,
        int blockNum) throws IOException {
    int index = blockNum * SAVE;
    int totalRead = 0;
    for (int j = 0; j < SAVE; j++, index++) {
        int buffer0 = ciIn2.read();
        if (buffer0 != -1) {
            outputText[index] = (byte) buffer0;
            totalRead++;
        } else {
            break;
        }
    }
    if (totalRead != SAVE) {
        throw new RuntimeException("Read bytes number " + totalRead
                + " does not equal to given number " + SAVE);
    }
}
 

static void cbc_shortRead400() throws Exception {
    System.out.println("Running cbc_shortRead400");

    // Encrypt 400 byte with AES/CBC/PKCS5Padding
    byte[] ct = encryptedText("CBC", 400);
    // Create stream with encrypted data
    CipherInputStream in = getStream("CBC", ct);

    try {
        in.read();
        in.close();
        System.out.println("  Pass.");
    } catch (IOException e) {
        System.out.println("  Fail:  " + e.getMessage());
        throw new RuntimeException(e.getCause());
    }
}
 

@Override
int readByte(CipherInputStream ciIn2, byte[] outputText, int save,
        int index) throws IOException {
    int len1 = ciIn2.read(outputText, index, save);
    out.println("Init: index=" + index + ",len=" + len1);
    // read more until save bytes
    index += len1;
    int len2 = 0;
    while (len1 != save && len2 != -1) {
        len2 = ciIn2.read(outputText, index, save - len1);
        out.println("Cont: index=" + index + ",len=" + len2);
        len1 += len2;
        index += len2;
    }
    return index;
}
 

/**
 * Implements int buffering type test case of the CICO SKIP test.
 *
 * @param blockNum block number to read.
 */
private void proceedSkipTestUsingIntBufferingType(CipherInputStream ciIn2,
        int blockNum) throws IOException {
    int index = blockNum * SAVE;
    int totalRead = 0;
    for (int j = 0; j < SAVE; j++, index++) {
        int buffer0 = ciIn2.read();
        if (buffer0 != -1) {
            outputText[index] = (byte) buffer0;
            totalRead++;
        } else {
            break;
        }
    }
    if (totalRead != SAVE) {
        throw new RuntimeException("Read bytes number " + totalRead
                + " does not equal to given number " + SAVE);
    }
}
 

static void cbc_shortRead600() throws Exception {
    System.out.println("Running cbc_shortRead600");

    // Encrypt 600 byte with AES/CBC/PKCS5Padding
    byte[] ct = encryptedText("CBC", 600);
    // Create stream with encrypted data
    CipherInputStream in = getStream("CBC", ct);

    try {
        in.read();
        in.close();
        System.out.println("  Pass.");
    } catch (IOException e) {
        System.out.println("  Fail:  " + e.getMessage());
        throw new RuntimeException(e.getCause());
    }
}
 

private static byte[] rsaDecrypt(byte[] encrypted) throws Exception {
    KeyStore keyStore = KeyStore.getInstance(AndroidKeyStore);
    keyStore.load(null);
    KeyStore.PrivateKeyEntry privateKeyEntry = (KeyStore.PrivateKeyEntry) keyStore.getEntry(KEY_ALIAS, null);
    Cipher output = Cipher.getInstance(RSA_MODE);
    output.init(Cipher.DECRYPT_MODE, privateKeyEntry.getPrivateKey());
    CipherInputStream cipherInputStream = new CipherInputStream(
            new ByteArrayInputStream(encrypted), output);
    ArrayList<Byte> values = new ArrayList<>();
    int nextByte;
    while ((nextByte = cipherInputStream.read()) != -1) {
        values.add((byte) nextByte);
    }

    byte[] bytes = new byte[values.size()];
    for (int i = 0; i < bytes.length; i++) {
        bytes[i] = values.get(i).byteValue();
    }
    return bytes;
}
 

private byte[] rsaDecryptKey(byte[] encrypted) throws KeyStoreException, CertificateException, NoSuchAlgorithmException, IOException, UnrecoverableEntryException, NoSuchProviderException, NoSuchPaddingException, InvalidKeyException {

        KeyStore keyStore = KeyStore.getInstance(ANDROID_KEY_STORE_NAME);
        keyStore.load(null);

        KeyStore.PrivateKeyEntry privateKeyEntry = (KeyStore.PrivateKeyEntry) keyStore.getEntry(KEY_ENCRYPTION, null);
        Cipher output = Cipher.getInstance(RSA_MODE, CIPHER_PROVIDER_NAME_ENCRYPTION_DECRYPTION_RSA);
        output.init(Cipher.DECRYPT_MODE, privateKeyEntry.getPrivateKey());
        CipherInputStream cipherInputStream = new CipherInputStream(
                new ByteArrayInputStream(encrypted), output);
        ArrayList<Byte> values = new ArrayList<>();
        int nextByte;
        while ((nextByte = cipherInputStream.read()) != -1) {
            values.add((byte) nextByte);
        }

        byte[] decryptedKeyAsBytes = new byte[values.size()];
        for (int i = 0; i < decryptedKeyAsBytes.length; i++) {
            decryptedKeyAsBytes[i] = values.get(i);
        }
        return decryptedKeyAsBytes;
    }
 

/**
 * Implements byte array buffering type test case of the CICO SKIP test.
 *
 * @param blockNum block number to read.
 */
private void proceedSkipTestUsingByteArrayBufferingType(
        CipherInputStream ciIn2, int blockNum) throws IOException {
    int index = blockNum * SAVE;
    int len1 = ciIn2.read(outputText, index, SAVE);
    // read more until SAVE bytes
    index += len1;
    int len2 = 0;
    int totalRead = len1;
    while (len1 != SAVE && len2 != -1) {
        len2 = ciIn2.read(outputText, index, SAVE - len1);
        len1 += len2;
        index += len2;
        totalRead += len2;
    }
    if (totalRead != SAVE) {
        throw new RuntimeException("Read bytes number " + totalRead
                + " does not equal to given number " + SAVE);
    }
}
 

private String decryptBytes(Key key, byte[] bytes) throws CryptoFailedException {
    try {
        Cipher cipher = Cipher.getInstance(ENCRYPTION_TRANSFORMATION);
        ByteArrayInputStream inputStream = new ByteArrayInputStream(bytes);
        // read the initialization vector from the beginning of the stream
        IvParameterSpec ivParams = readIvFromStream(inputStream);
        cipher.init(Cipher.DECRYPT_MODE, key, ivParams);
        // decrypt the bytes using a CipherInputStream
        CipherInputStream cipherInputStream = new CipherInputStream(
                inputStream, cipher);
        ByteArrayOutputStream output = new ByteArrayOutputStream();
        byte[] buffer = new byte[1024];
        while (true) {
            int n = cipherInputStream.read(buffer, 0, buffer.length);
            if (n <= 0) {
                break;
            }
            output.write(buffer, 0, n);
        }
        return new String(output.toByteArray(), charsetName);
    } catch (Exception e) {
        throw new CryptoFailedException("Could not decrypt bytes", e);
    }
}
 

static void gcm_oneReadByteCorrupt() throws Exception {

        System.out.println("Running gcm_oneReadByteCorrupt test");

        // Encrypt 100 bytes with AES/GCM/PKCS5Padding
        byte[] ct = encryptedText("GCM", 100);
        // Corrupt the encrypted message
        ct = corruptGCM(ct);
        // Create stream for decryption
        CipherInputStream in = getStream("GCM", ct);

        try {
            in.read();
            System.out.println("  Fail. No exception thrown.");
        } catch (IOException e) {
            Throwable ec = e.getCause();
            if (ec instanceof AEADBadTagException) {
                System.out.println("  Pass.");
            } else {
                System.out.println("  Fail: " + ec.getMessage());
                throw new RuntimeException(ec);
            }
        }
    }
 

/**
 * Implements int buffering type test case of the CICO SKIP test.
 *
 * @param blockNum block number to read.
 */
private void proceedSkipTestUsingIntBufferingType(CipherInputStream ciIn2,
        int blockNum) throws IOException {
    int index = blockNum * SAVE;
    int totalRead = 0;
    for (int j = 0; j < SAVE; j++, index++) {
        int buffer0 = ciIn2.read();
        if (buffer0 != -1) {
            outputText[index] = (byte) buffer0;
            totalRead++;
        } else {
            break;
        }
    }
    if (totalRead != SAVE) {
        throw new RuntimeException("Read bytes number " + totalRead
                + " does not equal to given number " + SAVE);
    }
}
 

static void cbc_shortStream() throws Exception {
    Cipher c;
    AlgorithmParameters params;
    byte[] read = new byte[200];

    System.out.println("Running cbc_shortStream");

    // Encrypt 97 byte with AES/CBC/PKCS5Padding
    byte[] ct = encryptedText("CBC", 97);
    // Create stream with only 96 bytes of encrypted data
    CipherInputStream in = getStream("CBC", ct, 96);

    try {
        int size = in.read(read);
        in.close();
        if (size != 80) {
            throw new RuntimeException("Fail: CipherInputStream.read() " +
                    "returned " + size + ". Should have been 80");
        }
        System.out.println("  Pass.");
    } catch (IOException e) {
        System.out.println("  Fail:  " + e.getMessage());
        throw new RuntimeException(e.getCause());
    }
}
 

static void gcm_suppressUnreadCorrupt() throws Exception {
    Cipher c;
    byte[] read = new byte[200];

    System.out.println("Running supressUnreadCorrupt test");

    // Encrypt 100 bytes with AES/GCM/PKCS5Padding
    byte[] ct = encryptedText("GCM", 100);
    // Corrupt the encrypted message
    ct = corruptGCM(ct);
    // Create stream for decryption
    CipherInputStream in = getStream("GCM", ct);

    try {
        in.close();
        System.out.println("  Pass.");
    } catch (IOException e) {
        System.out.println("  Fail: " + e.getMessage());
        throw new RuntimeException(e.getCause());
    }
}
 

static void gcm_oneReadByte() throws Exception {

        System.out.println("Running gcm_oneReadByte test");

        // Encrypt 100 bytes with AES/GCM/PKCS5Padding
        byte[] ct = encryptedText("GCM", 100);
        // Create stream for decryption
        CipherInputStream in = getStream("GCM", ct);

        try {
            in.read();
            System.out.println("  Pass.");
        } catch (Exception e) {
            System.out.println("  Fail: " + e.getMessage());
            throw new RuntimeException(e.getCause());
        }
    }
 

/**
 * Implements byte array buffering type test case of the CICO SKIP test.
 *
 * @param blockNum block number to read.
 */
private void proceedSkipTestUsingByteArrayBufferingType(
        CipherInputStream ciIn2, int blockNum) throws IOException {
    int index = blockNum * SAVE;
    int len1 = ciIn2.read(outputText, index, SAVE);
    // read more until SAVE bytes
    index += len1;
    int len2 = 0;
    int totalRead = len1;
    while (len1 != SAVE && len2 != -1) {
        len2 = ciIn2.read(outputText, index, SAVE - len1);
        len1 += len2;
        index += len2;
        totalRead += len2;
    }
    if (totalRead != SAVE) {
        throw new RuntimeException("Read bytes number " + totalRead
                + " does not equal to given number " + SAVE);
    }
}
 

static CipherInputStream getStream(String mode, byte[] ct, int length)
        throws Exception {
    Cipher c;

    if (mode.compareTo("GCM") == 0) {
        c = Cipher.getInstance("AES/GCM/PKCS5Padding", "SunJCE");
        c.init(Cipher.DECRYPT_MODE, key, gcmspec);
    } else if (mode.compareTo("CBC") == 0) {
        c = Cipher.getInstance("AES/CBC/PKCS5Padding", "SunJCE");
        c.init(Cipher.DECRYPT_MODE, key, iv);
    } else {
        return null;
    }

    return new CipherInputStream(new ByteArrayInputStream(ct, 0, length), c);

}
 

static void cbc_shortRead400() throws Exception {
    System.out.println("Running cbc_shortRead400");

    // Encrypt 400 byte with AES/CBC/PKCS5Padding
    byte[] ct = encryptedText("CBC", 400);
    // Create stream with encrypted data
    CipherInputStream in = getStream("CBC", ct);

    try {
        in.read();
        in.close();
        System.out.println("  Pass.");
    } catch (IOException e) {
        System.out.println("  Fail:  " + e.getMessage());
        throw new RuntimeException(e.getCause());
    }
}
 

static CipherInputStream getStream(String mode, byte[] ct, int length)
        throws Exception {
    Cipher c;

    if (mode.compareTo("GCM") == 0) {
        c = Cipher.getInstance("AES/GCM/PKCS5Padding", "SunJCE");
        c.init(Cipher.DECRYPT_MODE, key, gcmspec);
    } else if (mode.compareTo("CBC") == 0) {
        c = Cipher.getInstance("AES/CBC/PKCS5Padding", "SunJCE");
        c.init(Cipher.DECRYPT_MODE, key, iv);
    } else {
        return null;
    }

    return new CipherInputStream(new ByteArrayInputStream(ct, 0, length), c);

}
 

static void cbc_shortRead600() throws Exception {
    System.out.println("Running cbc_shortRead600");

    // Encrypt 600 byte with AES/CBC/PKCS5Padding
    byte[] ct = encryptedText("CBC", 600);
    // Create stream with encrypted data
    CipherInputStream in = getStream("CBC", ct);

    try {
        in.read();
        in.close();
        System.out.println("  Pass.");
    } catch (IOException e) {
        System.out.println("  Fail:  " + e.getMessage());
        throw new RuntimeException(e.getCause());
    }
}
 

static CipherInputStream getStream(String mode, byte[] ct, int length)
        throws Exception {
    Cipher c;

    if (mode.compareTo("GCM") == 0) {
        c = Cipher.getInstance("AES/GCM/PKCS5Padding", "SunJCE");
        c.init(Cipher.DECRYPT_MODE, key, gcmspec);
    } else if (mode.compareTo("CBC") == 0) {
        c = Cipher.getInstance("AES/CBC/PKCS5Padding", "SunJCE");
        c.init(Cipher.DECRYPT_MODE, key, iv);
    } else {
        return null;
    }

    return new CipherInputStream(new ByteArrayInputStream(ct, 0, length), c);

}
 

static void cbc_shortRead400() throws Exception {
    System.out.println("Running cbc_shortRead400");

    // Encrypt 400 byte with AES/CBC/PKCS5Padding
    byte[] ct = encryptedText("CBC", 400);
    // Create stream with encrypted data
    CipherInputStream in = getStream("CBC", ct);

    try {
        in.read();
        in.close();
        System.out.println("  Pass.");
    } catch (IOException e) {
        System.out.println("  Fail:  " + e.getMessage());
        throw new RuntimeException(e.getCause());
    }
}
 

static void gcm_oneReadByte() throws Exception {

        System.out.println("Running gcm_oneReadByte test");

        // Encrypt 100 bytes with AES/GCM/PKCS5Padding
        byte[] ct = encryptedText("GCM", 100);
        // Create stream for decryption
        CipherInputStream in = getStream("GCM", ct);

        try {
            in.read();
            System.out.println("  Pass.");
        } catch (Exception e) {
            System.out.println("  Fail: " + e.getMessage());
            throw new RuntimeException(e.getCause());
        }
    }
 

static void gcm_oneReadByteCorrupt() throws Exception {

        System.out.println("Running gcm_oneReadByteCorrupt test");

        // Encrypt 100 bytes with AES/GCM/PKCS5Padding
        byte[] ct = encryptedText("GCM", 100);
        // Corrupt the encrypted message
        ct = corruptGCM(ct);
        // Create stream for decryption
        CipherInputStream in = getStream("GCM", ct);

        try {
            in.read();
            System.out.println("  Fail. No exception thrown.");
        } catch (IOException e) {
            Throwable ec = e.getCause();
            if (ec instanceof AEADBadTagException) {
                System.out.println("  Pass.");
            } else {
                System.out.println("  Fail: " + ec.getMessage());
                throw new RuntimeException(ec);
            }
        }
    }
 

static void gcm_suppressUnreadCorrupt() throws Exception {
    Cipher c;
    byte[] read = new byte[200];

    System.out.println("Running supressUnreadCorrupt test");

    // Encrypt 100 bytes with AES/GCM/PKCS5Padding
    byte[] ct = encryptedText("GCM", 100);
    // Corrupt the encrypted message
    ct = corruptGCM(ct);
    // Create stream for decryption
    CipherInputStream in = getStream("GCM", ct);

    try {
        in.close();
        System.out.println("  Pass.");
    } catch (IOException e) {
        System.out.println("  Fail: " + e.getMessage());
        throw new RuntimeException(e.getCause());
    }
}
 

private static String decryptBytes(Key key, byte[] bytes) throws CryptoFailedException {
    try {
        Cipher cipher = Cipher.getInstance(ENCRYPTION_TRANSFORMATION);
        ByteArrayInputStream inputStream = new ByteArrayInputStream(bytes);
        // read the initialization vector from the beginning of the stream
        IvParameterSpec ivParams = readIvFromStream(inputStream);
        cipher.init(Cipher.DECRYPT_MODE, key, ivParams);
        // decrypt the bytes using a CipherInputStream
        CipherInputStream cipherInputStream = new CipherInputStream(
                inputStream, cipher);
        ByteArrayOutputStream output = new ByteArrayOutputStream();
        byte[] buffer = new byte[1024];
        while (true) {
            int n = cipherInputStream.read(buffer, 0, buffer.length);
            if (n <= 0) {
                break;
            }
            output.write(buffer, 0, n);
        }
        return new String(output.toByteArray(), DEFAULT_CHARSET);
    } catch (IOException | NoSuchAlgorithmException | NoSuchPaddingException |
            InvalidKeyException | InvalidAlgorithmParameterException e) {
        throw new CryptoFailedException("Could not decrypt bytes", e);
    }
}