Examples with CipherInputStream javax.crypto.CipherInputStream used on opensource projects

Example 46 with CipherInputStream

use of javax.crypto.CipherInputStream in project jdk8u_jdk by JetBrains.

the class ReadWriteSkip method doTest.

final void doTest(BufferType type) throws Exception {
    // init ciphers
    encryptCipher = createCipher(Cipher.ENCRYPT_MODE);
    decryptCipher = createCipher(Cipher.DECRYPT_MODE);
    // init cipher input stream
    ciInput = new CipherInputStream(new ByteArrayInputStream(plaintext), encryptCipher);
    runTest(type);
}

Example 47 with CipherInputStream

use of javax.crypto.CipherInputStream in project jdk8u_jdk by JetBrains.

the class CipherInputStreamExceptions method cbc_shortStream.

/* Check that close() does not throw an exception with full message in
     * CipherInputStream's ibuffer.
     * This test:
     *   1) Encrypts a 97 byte message with AES/CBC/PKCS5Padding
     *   2) Create a stream that sends 96 bytes.
     *   3) Read stream once,
     *   4) Close and expect no exception
     */
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());
    }
}

Example 48 with CipherInputStream

use of javax.crypto.CipherInputStream in project jdk8u_jdk by JetBrains.

the class CipherInputStreamExceptions method getStream.

/* Generic method to get a properly setup CipherInputStream */
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);
}

Example 49 with CipherInputStream

use of javax.crypto.CipherInputStream in project jdk8u_jdk by JetBrains.

the class CipherInputStreamExceptions method cbc_readAllIllegalBlockSize.

/* Check that exception is thrown when message is fully read
     * This test:
     *   1) Encrypts a 96 byte message with AES/CBC/PKCS5Padding
     *   2) Create a stream that sends 95 bytes.
     *   3) Read stream to the end
     *   4) Expect IllegalBlockSizeException thrown
     */
static void cbc_readAllIllegalBlockSize() throws Exception {
    byte[] read = new byte[200];
    System.out.println("Running cbc_readAllIllegalBlockSize test");
    // Encrypt 96 byte with AES/CBC/PKCS5Padding
    byte[] ct = encryptedText("CBC", 96);
    // Create a stream with only 95 bytes of encrypted data
    CipherInputStream in = getStream("CBC", ct, 95);
    try {
        int s, size = 0;
        while ((s = in.read(read)) != -1) {
            size += s;
        }
        throw new RuntimeException("Fail: No IllegalBlockSizeException. " + "CipherInputStream.read() returned " + size);
    } catch (IOException e) {
        Throwable ec = e.getCause();
        if (ec instanceof IllegalBlockSizeException) {
            System.out.println("  Pass.");
        } else {
            System.out.println("  Fail: " + ec.getMessage());
            throw new RuntimeException(ec);
        }
    }
}

Example 50 with CipherInputStream

use of javax.crypto.CipherInputStream in project jdk8u_jdk by JetBrains.

the class CipherInputStreamExceptions method gcm_suppressUnreadCorrupt.

/*
     * Verify doFinal() exception is suppressed when input stream is not
     * read before it is closed.
     * This test:
     *   1) Encrypt 100 bytes with AES/GCM/PKCS5Padding
     *   2) Changes the last byte to invalidate the authetication tag.
     *   3) Opens a CipherInputStream and the closes it. Never reads from it.
     *
     * There should be no exception thrown.
     */
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());
    }
}