Examples with HexDumpEncoder sun.security.util.HexDumpEncoder used on opensource projects

Example 1 with HexDumpEncoder

use of sun.security.util.HexDumpEncoder in project Bytecoder by mirkosertic.

the class GCMParameters method engineToString.

/*
     * Returns a formatted string describing the parameters.
     */
protected String engineToString() {
    String LINE_SEP = System.getProperty("line.separator");
    HexDumpEncoder encoder = new HexDumpEncoder();
    StringBuilder sb = new StringBuilder(LINE_SEP + "    iv:" + LINE_SEP + "[" + encoder.encodeBuffer(iv) + "]");
    sb.append(LINE_SEP + "tLen(bits):" + LINE_SEP + tLen * 8 + LINE_SEP);
    return sb.toString();
}

Example 2 with HexDumpEncoder

use of sun.security.util.HexDumpEncoder in project Bytecoder by mirkosertic.

the class PBEParameters method engineToString.

/*
     * Returns a formatted string describing the parameters.
     */
protected String engineToString() {
    String LINE_SEP = System.getProperty("line.separator");
    String saltString = LINE_SEP + "    salt:" + LINE_SEP + "[";
    HexDumpEncoder encoder = new HexDumpEncoder();
    saltString += encoder.encodeBuffer(salt);
    saltString += "]";
    return saltString + LINE_SEP + "    iterationCount:" + LINE_SEP + Debug.toHexString(BigInteger.valueOf(iCount)) + LINE_SEP;
}

Example 3 with HexDumpEncoder

use of sun.security.util.HexDumpEncoder in project Bytecoder by mirkosertic.

the class Debug method printHex.

static void printHex(String prefix, ByteBuffer bb) {
    HexDumpEncoder dump = new HexDumpEncoder();
    synchronized (System.out) {
        System.out.println(prefix);
        try {
            dump.encodeBuffer(bb.slice(), System.out);
        } catch (Exception e) {
        // ignore
        }
        System.out.flush();
    }
}

Example 4 with HexDumpEncoder

use of sun.security.util.HexDumpEncoder in project Bytecoder by mirkosertic.

the class CipherBox method encrypt.

/*
     * Encrypts a ByteBuffer block of data, returning the size of the
     * resulting block.
     *
     * The byte buffers position and limit initially define the amount
     * to encrypt.  On return, the position and limit are
     * set to last position padded/encrypted.  The limit may have changed
     * because of the added padding bytes.
     */
int encrypt(ByteBuffer bb, int outLimit) {
    int len = bb.remaining();
    if (cipher == null) {
        bb.position(bb.limit());
        return len;
    }
    int pos = bb.position();
    int blockSize = cipher.getBlockSize();
    if (cipherType == BLOCK_CIPHER) {
        // addPadding adjusts pos/limit
        len = addPadding(bb, blockSize);
        bb.position(pos);
    }
    if (debug != null && Debug.isOn("plaintext")) {
        try {
            HexDumpEncoder hd = new HexDumpEncoder();
            System.out.println("Padded plaintext before ENCRYPTION:  len = " + len);
            hd.encodeBuffer(bb.duplicate(), System.out);
        } catch (IOException e) {
        }
    }
    /*
         * Encrypt "in-place".  This does not add its own padding.
         */
    ByteBuffer dup = bb.duplicate();
    if (cipherType == AEAD_CIPHER) {
        try {
            int outputSize = cipher.getOutputSize(dup.remaining());
            if (outputSize > bb.remaining()) {
                // reserved space for the authentication tag.
                if (outLimit < pos + outputSize) {
                    // unlikely to happen
                    throw new ShortBufferException("need more space in output buffer");
                }
                bb.limit(pos + outputSize);
            }
            int newLen = cipher.doFinal(dup, bb);
            if (newLen != outputSize) {
                throw new RuntimeException("Cipher buffering error in JCE provider " + cipher.getProvider().getName());
            }
            return newLen;
        } catch (IllegalBlockSizeException | BadPaddingException | ShortBufferException ibse) {
            // unlikely to happen
            throw new RuntimeException("Cipher error in AEAD mode in JCE provider " + cipher.getProvider().getName(), ibse);
        }
    } else {
        int newLen;
        try {
            newLen = cipher.update(dup, bb);
        } catch (ShortBufferException sbe) {
            // unlikely to happen
            throw new RuntimeException("Cipher buffering error " + "in JCE provider " + cipher.getProvider().getName());
        }
        if (bb.position() != dup.position()) {
            throw new RuntimeException("bytebuffer padding error");
        }
        if (newLen != len) {
            // catch BouncyCastle buffering error
            throw new RuntimeException("Cipher buffering error " + "in JCE provider " + cipher.getProvider().getName());
        }
        return newLen;
    }
}

Example 5 with HexDumpEncoder

use of sun.security.util.HexDumpEncoder in project Bytecoder by mirkosertic.

the class CipherBox method decrypt.

/*
     * Decrypts a block of data, returning the size of the
     * resulting block if padding was required.
     *
     * For SSLv3 and TLSv1.0, with block ciphers in CBC mode the
     * Initialization Vector (IV) for the first record is generated by
     * the handshake protocol, the IV for subsequent records is the
     * last ciphertext block from the previous record.
     *
     * From TLSv1.1, the implicit IV is replaced with an explicit IV to
     * protect against CBC attacks.
     *
     * Differentiating between bad_record_mac and decryption_failed alerts
     * may permit certain attacks against CBC mode. It is preferable to
     * uniformly use the bad_record_mac alert to hide the specific type of
     * the error.
     */
int decrypt(byte[] buf, int offset, int len, int tagLen) throws BadPaddingException {
    if (cipher == null) {
        return len;
    }
    try {
        int newLen;
        if (cipherType == AEAD_CIPHER) {
            try {
                newLen = cipher.doFinal(buf, offset, len, buf, offset);
            } catch (IllegalBlockSizeException ibse) {
                // unlikely to happen
                throw new RuntimeException("Cipher error in AEAD mode in JCE provider " + cipher.getProvider().getName(), ibse);
            }
        } else {
            newLen = cipher.update(buf, offset, len, buf, offset);
            if (newLen != len) {
                // catch BouncyCastle buffering error
                throw new RuntimeException("Cipher buffering error " + "in JCE provider " + cipher.getProvider().getName());
            }
        }
        if (debug != null && Debug.isOn("plaintext")) {
            try {
                HexDumpEncoder hd = new HexDumpEncoder();
                System.out.println("Padded plaintext after DECRYPTION:  len = " + newLen);
                hd.encodeBuffer(new ByteArrayInputStream(buf, offset, newLen), System.out);
            } catch (IOException e) {
            }
        }
        if (cipherType == BLOCK_CIPHER) {
            int blockSize = cipher.getBlockSize();
            newLen = removePadding(buf, offset, newLen, tagLen, blockSize, protocolVersion);
            if (protocolVersion.useTLS11PlusSpec()) {
                if (newLen < blockSize) {
                    throw new BadPaddingException("The length after " + "padding removal (" + newLen + ") should be larger " + "than <" + blockSize + "> since explicit IV used");
                }
            }
        }
        return newLen;
    } catch (ShortBufferException e) {
        // unlikely to happen, we should have enough buffer space here
        throw new ArrayIndexOutOfBoundsException(e.toString());
    }
}