Example usage for java.security MessageDigest update

Introduction

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

Prototype

public void update(byte[] input, int offset, int len) 

Source Link

Document

Updates the digest using the specified array of bytes, starting at the specified offset.

Usage

From source file:Main.java

/**
 * Converts a String into a specified hash.
 * //from   ww w.  j  a v a  2s. co  m
 * @param text
 *            Text to convert.
 * @return hash.
 * @throws NoSuchAlgorithmException
 * @throws UnsupportedEncodingException
 */
public static String hashAlgorithm(String hash, String text)
        throws NoSuchAlgorithmException, UnsupportedEncodingException {
    //TapjoyLog.i(TAPJOY_UTIL, "" + hash + ": " + text);

    MessageDigest md;
    byte[] sha1hash = new byte[40];

    // MD5, SHA-1, etc
    md = MessageDigest.getInstance(hash);
    md.update(text.getBytes("iso-8859-1"), 0, text.length());
    sha1hash = md.digest();

    return convertToHex(sha1hash);
}

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From source file:de.taimos.dvalin.interconnect.model.MessageCryptoUtil.java

/**
 *
 * @param msg the message to sign//w  w w .  jav a 2s  .co  m
 * @return the signature hash
 * @throws CryptoException on sign error
 */
public static String sign(final String msg) throws CryptoException {
    try {
        final String toEnc = msg + MessageCryptoUtil.SIGNATURE;
        final MessageDigest mdEnc = MessageDigest.getInstance("MD5");
        mdEnc.update(toEnc.getBytes(Charset.forName("UTF-8")), 0, toEnc.length());
        return new BigInteger(1, mdEnc.digest()).toString(16);
    } catch (final Exception e) {
        throw new CryptoException("Creating signature failed", e);
    }
}

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From source file:Main.java

public static String toSHA1(String s) {
    MessageDigest md = null;
    byte[] sha1hash = null;
    try {//  w  w w  .  j av  a 2  s.c om
        md = MessageDigest.getInstance("SHA-1");
        sha1hash = new byte[40];
        md.update(s.getBytes(UTF_8), 0, s.length());
    } catch (Exception e) {
        return ERROR_SHA1;
    }
    sha1hash = md.digest();
    Formatter formatter = new Formatter();
    for (byte b : sha1hash) {
        formatter.format("%02x", b);
    }
    return formatter.toString();
}

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From source file:com.netflix.dynomitemanager.sidecore.utils.SystemUtils.java

public static byte[] md5(byte[] buf) {
    if (buf == null)
        throw new IllegalArgumentException("buffer cannot be null!");
    try {//w  w  w. j  av  a2  s . c  o m
        MessageDigest mdigest = MessageDigest.getInstance("MD5");
        mdigest.update(buf, 0, buf.length);
        return mdigest.digest();
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

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From source file:Main.java

public static String getMD5(String value) {
    if (value == null || value.length() == 0)
        return null;

    MessageDigest m = null;

    try {/*w w w .  j a v  a  2 s .com*/
        m = MessageDigest.getInstance("MD5");
    } catch (NoSuchAlgorithmException e) {
        return null;
    }

    m.update(value.getBytes(), 0, value.length());
    return new BigInteger(1, m.digest()).toString(16).toUpperCase(Locale.getDefault());
}

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From source file:com.sfalma.trace.Sfalma.java

public static String MD5(String data) throws Exception {
    MessageDigest m = MessageDigest.getInstance("MD5");

    m.update(data.getBytes(), 0, data.length());
    return new BigInteger(1, m.digest()).toString(16);
}

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From source file:Main.java

private static String sha256Hex(final String filePath) throws NoSuchAlgorithmException, IOException {
    final InputStream fis = new BufferedInputStream(new FileInputStream(filePath));
    final MessageDigest md = MessageDigest.getInstance("SHA-256");

    final byte[] dataBytes = new byte[1024];

    int nread;//from w  w  w . j a  v a2  s  . c o m
    while ((nread = fis.read(dataBytes)) != -1)
        md.update(dataBytes, 0, nread);
    final byte[] mdbytes = md.digest();

    final StringBuilder sb = new StringBuilder();
    for (final byte b : mdbytes)
        sb.append(Integer.toString((b & 0xff) + 0x100, 16).substring(1));

    return sb.toString();
}

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From source file:Main.java

/**
 * Hash a string/*w  ww .  j  a va  2 s  . c o m*/
 *
 * @param toHash String to be hashed.
 *
 * @return Hashed string.
 */
public static String hash(Object toHash) {
    String hashString = toHash.toString();
    MessageDigest md;
    try {
        md = MessageDigest.getInstance("MD5");
    } catch (NoSuchAlgorithmException e) {
        return hashString;
    }

    md.update(hashString.getBytes(), 0, hashString.length());
    return convertToHex(md.digest());
}

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From source file:Main.java

public static String md5Calc(File f) {
    int i;//from   w ww  . j  a v  a 2s  . com

    byte[] buffer = new byte[1024];
    int read = 0;
    String md5hash;
    try {
        MessageDigest digest = MessageDigest.getInstance("MD5");
        InputStream is = new FileInputStream(f);
        while ((read = is.read(buffer)) > 0) {
            digest.update(buffer, 0, read);
        }
        byte[] md5sum = digest.digest();
        BigInteger bigInt = new BigInteger(1, md5sum);
        md5hash = bigInt.toString(16);
        is.close();
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    }

    if (md5hash.length() != 33) {
        String tmp = "";
        for (i = 1; i < (33 - md5hash.length()); i++) {
            tmp = tmp.concat("0");
        }
        md5hash = tmp.concat(md5hash);
    }

    return md5hash;
}

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From source file:Main.java

/**
 * Generates SHA256 hash of the password which is used as key
 *
 * @param password used to generated key
 * @return SHA256 of the password//from  w w  w .j av a 2s .c o m
 */
private static SecretKeySpec generateKey(final String password)
        throws NoSuchAlgorithmException, UnsupportedEncodingException {
    final MessageDigest digest = MessageDigest.getInstance(HASH_ALGORITHM);
    byte[] bytes = password.getBytes("UTF-8");
    digest.update(bytes, 0, bytes.length);
    byte[] key = digest.digest();

    log("SHA-256 key ", key);

    return new SecretKeySpec(key, "AES");
}

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