Example usage for java.security MessageDigest update

Introduction

In this page you can find the example usage for java.security MessageDigest update.

Prototype

public final void update(ByteBuffer input) 

Source Link

Document

Update the digest using the specified ByteBuffer.

Usage

From source file:com.continusec.client.ObjectHash.java

private static final byte[] hashDouble(double f) throws ContinusecException {
    MessageDigest d = DigestUtils.getSha256Digest();
    d.update((byte) 'f');
    if (f == 0.0) { // special case 0
        d.update((byte) '+');
        d.update((byte) '0');
        d.update((byte) ':');
    } else {/*  ww w  .  jav a2 s . c o  m*/
        if (f < 0) {
            d.update((byte) '-');
            f = -f;
        } else {
            d.update((byte) '+');
        }
        int e = 0;
        while (f > 1) {
            f /= 2.0;
            e++;
        }
        while (f < 0.5) {
            f *= 2.0;
            e--;
        }
        d.update(Integer.toString(e).getBytes());
        d.update((byte) ':');
        if ((f > 1) || (f <= 0.5)) {
            throw new InvalidObjectException();
        }
        for (int cnt = 0; (f != 0) && (cnt < 1000); cnt++) {
            if (f >= 1) {
                d.update((byte) '1');
                f -= 1.0;
            } else {
                d.update((byte) '0');
            }
            if (f >= 1) {
                throw new InvalidObjectException();
            }
            f *= 2.0;
        }
        if (f != 0) { // we went too long
            throw new InvalidObjectException();
        }
    }
    return d.digest();
}

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From source file:me.j360.dubbo.modules.util.text.HashUtil.java

/**
 * , ?md5sha1./*from www . j  ava 2 s  .c om*/
 */
private static byte[] digest(@NotNull byte[] input, MessageDigest digest, byte[] salt, int iterations) {
    // ?
    if (salt != null) {
        digest.update(salt);
    }

    // 
    byte[] result = digest.digest(input);

    // >1
    for (int i = 1; i < iterations; i++) {
        digest.reset();
        result = digest.digest(result);
    }

    return result;
}

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From source file:com.linuxbox.enkive.docstore.mongo.FileDocStoreServiceTest.java

/**
 * Returns a MessageDigest that is primed with the data for the type of
 * document.//  w  w w. ja  v a  2s .  c om
 * 
 * @param doc
 * @return
 * @throws Exception
 */
private static MessageDigest getPrimedMessageDigest(Document doc) throws Exception {
    MessageDigest messageDigest = MessageDigest.getInstance(AbstractDocStoreService.HASH_ALGORITHM);
    messageDigest.update(AbstractDocStoreService.getFileTypeEncodingDigestPrime(doc));
    return messageDigest;
}

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From source file:mangotiger.net.EncodedDigester.java

/**
 * Utility Method for obtaining a BASE64 encoded MessageDigest via specified algorithm.
 *
 * Added a check for null here.// ww  w  .  ja v a 2  s .  c  o  m
 * @param toDigest    - array of strings to digest
 * @param anAlgorithm - digesting algorithm to use to perform the digest
 * @return BASE64 encoded String of a MessageDigest digested by the specified algorithm
 * @throws java.security.NoSuchAlgorithmException
 *                                      - when the algorithm is unknown
 * @throws UnsupportedEncodingException - when the string-to-byte encoding is not supported
 * @see MessageDigest
 */
public static String getEncodedDigest(String[] toDigest, String anAlgorithm, String stringEncoding)
        throws java.security.NoSuchAlgorithmException, java.io.UnsupportedEncodingException {
    String digest = null;
    if (toDigest != null && toDigest.length > 0) {
        try {
            MessageDigest messageDigest = MessageDigest.getInstance(anAlgorithm);
            for (int i = 0; i < toDigest.length && toDigest[i] != null; i++) {
                messageDigest.update(toDigest[i].getBytes(stringEncoding));
            }
            digest = encode(messageDigest.digest());
        } catch (java.security.NoSuchAlgorithmException e) {
            logger.error("SecurityManager.getLicenseKey(): can't get a digest instance", e);
            throw e;
        } catch (java.io.UnsupportedEncodingException e) {
            logger.error("SecurityManager.getLicenseKey(): can't get a digest instance", e);
            throw e;
        }
    }
    return digest;
}

---

From source file:io.alicorn.server.http.LoginEndpoint.java

public static String hash(byte[] bytes) {
    try {//from  w  w w  .j  a  va  2  s  .c  om
        //Create the message digest.
        MessageDigest digest = MessageDigest.getInstance("SHA-256");
        digest.update(bytes);

        //Hash the bytes.
        byte[] hashed = digest.digest();

        //Translate the bytes into a hexadecimal string.
        StringBuilder hexString = new StringBuilder();
        for (byte aHashed : hashed) {
            String hex = Integer.toHexString(0xff & aHashed);
            if (hex.length() == 1)
                hexString.append('0');
            hexString.append(hex);
        }

        return hexString.toString();
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    }
}

---

From source file:PublisherUtil.java

/**
 * Utility for getting the MD5 hash from the provided key for sending the publishPassword.
 * //  w w w .  j a  va  2 s .  co  m
 * @param passWord
 *          The password to get an MD5 hash of
 * @return zero-padded MD5 hash of the password
 */
public static final String getPasswordKey(final String passWord) {
    try {
        MessageDigest md = MessageDigest.getInstance("MD5"); //$NON-NLS-1$
        md.reset(); // Reset the algorithm
        md.update(passWord.getBytes()); // Update the algorithm with the e-mail
        // Update the algorithm with a known "key" for keyed MD5
        // It basically adds the new key to the end and computes
        byte[] digest = md.digest("P3ntah0Publ1shPa55w0rd".getBytes()); //$NON-NLS-1$
        StringBuffer buf = new StringBuffer();
        String s;
        for (byte element : digest) {
            s = Integer.toHexString(0xFF & element);
            buf.append((s.length() == 1) ? "0" : "").append(s); //$NON-NLS-1$ //$NON-NLS-2$
        }
        return buf.toString(); // Return MD5 string
    } catch (NoSuchAlgorithmException ex) {
        PublisherUtil.logger.error(null, ex);
        return null;
    }
}

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From source file:net.dbjorge.jthumbor.ThumborUtils.java

/**
 * MD5 hashes the given input string and returns the hex digest in String form.
 *
 * Input may not be null or empty.//w w  w.ja  v a  2 s  . c  o  m
 */
public static String md5String(String input) {
    String result = "";
    MessageDigest algorithm;
    try {
        algorithm = MessageDigest.getInstance("MD5");
    } catch (NoSuchAlgorithmException e) {
        throw new RuntimeException(e);
    }
    algorithm.reset();
    algorithm.update(input.getBytes());
    byte[] md5 = algorithm.digest();
    String tmp = "";
    for (int i = 0; i < md5.length; i++) {
        tmp = (Integer.toHexString(0xFF & md5[i]));
        if (tmp.length() == 1) {
            result += "0" + tmp;
        } else {
            result += tmp;
        }
    }
    return result;
}

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From source file:codes.writeonce.maven.plugins.soy.CompileMojo.java

private static void updateDigest(Path root, MessageDigest sourceDigest, Path soyFilePath) throws IOException {
    sourceDigest.update(soyFilePath.toString().getBytes(TEXT_DIGEST_CHARSET));
    final Path soyFile = root.resolve(soyFilePath);
    sourceDigest.update(Longs.toByteArray(Files.size(soyFile)));
    sourceDigest.update(Longs.toByteArray(Files.getLastModifiedTime(soyFile).toMillis()));
}

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From source file:com.zen.androidhtmleditor.util.TextUtil.java

public static String MD5(String str, String encoding) {
    MessageDigest messageDigest = null;

    try {//w  w w .ja  v  a2 s  .  c om
        messageDigest = MessageDigest.getInstance("MD5");
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }
    messageDigest.reset();
    try {
        messageDigest.update(str.getBytes(encoding));
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }

    byte[] byteArray = messageDigest.digest();

    StringBuffer md5StrBuff = new StringBuffer();

    for (int i = 0; i < byteArray.length; i++) {
        if (Integer.toHexString(0xFF & byteArray[i]).length() == 1)
            md5StrBuff.append("0").append(Integer.toHexString(0xFF & byteArray[i]));
        else
            md5StrBuff.append(Integer.toHexString(0xFF & byteArray[i]));
    }

    return md5StrBuff.toString();
}

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From source file:com.eucalyptus.auth.euare.EuareServerCertificateUtil.java

public static String getEncryptedKey(final String certArn, final String certPem) throws AuthException {
    final ServerCertificate targetCert = lookupServerCertificate(certArn);
    // generate symmetric key
    final MessageDigest digest = Digest.SHA256.get();
    final byte[] salt = new byte[32];
    Crypto.getSecureRandomSupplier().get().nextBytes(salt);
    digest.update(salt);
    final SecretKey symmKey = new SecretKeySpec(digest.digest(), "AES");

    try {/* ww  w  .j  a  v a2s  .  c om*/
        // encrypt the server pk using symm key
        Cipher cipher = Ciphers.AES_CBC.get();
        final byte[] iv = new byte[16];
        Crypto.getSecureRandomSupplier().get().nextBytes(iv);
        cipher.init(Cipher.ENCRYPT_MODE, symmKey, new IvParameterSpec(iv),
                Crypto.getSecureRandomSupplier().get());
        final byte[] cipherText = cipher.doFinal(Base64.encode(targetCert.getPrivateKey().getBytes()));
        final String encPrivKey = new String(Base64.encode(Arrays.concatenate(iv, cipherText)));

        // encrypt the symmetric key using the certPem
        X509Certificate x509Cert = PEMFiles.getCert(B64.standard.dec(certPem));
        cipher = Ciphers.RSA_PKCS1.get();
        cipher.init(Cipher.ENCRYPT_MODE, x509Cert.getPublicKey(), Crypto.getSecureRandomSupplier().get());
        byte[] symmkey = cipher.doFinal(symmKey.getEncoded());
        final String b64SymKey = new String(Base64.encode(symmkey));

        return String.format("%s\n%s", b64SymKey, encPrivKey);
    } catch (final Exception ex) {
        throw Exceptions.toUndeclared(ex);
    }
}

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