Example usage for java.security MessageDigest digest

Introduction

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

Prototype

public byte[] digest()

Source Link

Document

Completes the hash computation by performing final operations such as padding.

Usage

From source file:jp.co.opentone.bsol.framework.core.util.HashUtil.java

/**
 * ????????????./*from  w w w .j  a v  a  2s  . com*/
 * <h3>?</h3>
 * <pre>
 * 1. 3??
 * 2. ???(ab, 01, ...)?
 * 3. ALGORITHM?????
 *</pre>
 * @param   parameter ?
 * @return  ?
 */
public static String getString(String parameter) {
    String result = null;

    if (parameter != null) {
        String newParameter = parameter + parameter + parameter;
        byte[] encodedParameter = newParameter.getBytes();
        for (int i = 0; i < encodedParameter.length; i++) {
            encodedParameter[i] = (byte) (encodedParameter[i] + 1);
        }
        try {
            MessageDigest md = MessageDigest.getInstance(ALGORITHM);
            md.update(encodedParameter);
            result = new String(Hex.encodeHex(md.digest()));
        } catch (NoSuchAlgorithmException e) {
            // ALGORITHM?????????????
            throw new RuntimeException(e);
        }
    }
    return result;
}

From source file:Main.java

private static byte[] generateKey(String strSrc) {

    MessageDigest digest;

    byte[] keyBytes = new byte[32];
    try {/* w ww  . j a v  a2 s. c  om*/
        digest = MessageDigest.getInstance("SHA-256");
        digest.update(strSrc.getBytes("UTF-8"));
        System.arraycopy(digest.digest(), 0, keyBytes, 0, keyBytes.length);
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }

    return keyBytes;
}

From source file:Main.java

/**
 * Calculates an MD5 hash for a text./*from ww w .ja  v  a 2  s  .c  o  m*/
 * 
 * @param dataToEncode
 *            The data to encode.
 * @return A text representation of a hexadecimal value of length 32.
 */
public static String messageDigestFive(final String dataToEncode) {
    MessageDigest m;
    try {
        m = MessageDigest.getInstance("MD5");
        byte[] data = dataToEncode.getBytes();
        m.update(data, 0, data.length);
        BigInteger i = new BigInteger(1, m.digest());
        return String.format("%1$032X", i);
    } catch (NoSuchAlgorithmException e) {
        // MD5 Should be supported by the runtime!
        throw new IllegalStateException(e);
    }
}

From source file:it.zero11.acme.utils.JWKUtils.java

private static byte[] SHA256(String text) {
    try {/*from   ww  w .  j  a  va2 s  .c om*/
        MessageDigest md;
        md = MessageDigest.getInstance("SHA-256");
        md.update(text.getBytes("UTF-8"), 0, text.length());
        return md.digest();
    } catch (NoSuchAlgorithmException e) {
        throw new RuntimeException(e);
    } catch (UnsupportedEncodingException e) {
        throw new RuntimeException(e);
    }
}

From source file:net.incrementalism.tooter.User.java

private static String hash(String password) {
    // NOTE: Insecure! Don't use this in a real application
    try {//from   w w  w .  j  av a2  s  .  com
        MessageDigest md = MessageDigest.getInstance("SHA");
        md.update(password.getBytes("UTF-8"));
        return Base64.encodeBase64String(md.digest());
    } catch (NoSuchAlgorithmException e) {
        throw new AssertionError("No SHA");
    } catch (UnsupportedEncodingException e) {
        throw new AssertionError("No UTF-8");
    }
}

From source file:Main.java

public static String sha1(String text) {
    MessageDigest md;
    try {/*from www  .  j av a2 s  .c om*/
        md = MessageDigest.getInstance("SHA-1");
        byte[] sha1hash = new byte[40];
        md.update(text.getBytes("UTF-8"), 0, text.length());
        sha1hash = md.digest();
        return convertToHex(sha1hash);
    } catch (Exception e) {
    }

    return "";
}

From source file:me.figo.internal.FigoTrustManager.java

private static String getThumbPrint(X509Certificate cert) {
    try {//from  ww w  . j  av  a 2s  .c o  m
        MessageDigest md = MessageDigest.getInstance("SHA-1");
        byte[] der = cert.getEncoded();
        md.update(der);
        byte[] digest = md.digest();
        return new String(Hex.encodeHex(digest, false));
    } catch (NoSuchAlgorithmException e) {
        return "";
    } catch (CertificateEncodingException e) {
        return "";
    }
}

From source file:Main.java

/**
 * Calculation md5 hash of string//from   ww  w .ja v a  2  s  . c om
 * 
 * @param s - string for hash calculation
 * @return md5 hash of input string
 */
public static String MD5Hash(String s) {
    int sHash = s.hashCode();

    String result = md5Cache.get(sHash);

    if (result != null)
        return result;

    try {
        if (MD5 == null)
            MD5 = MessageDigest.getInstance("MD5");

        MessageDigest alg = (MessageDigest) MD5.clone();
        alg.update(s.getBytes());

        StringBuffer hexString = new StringBuffer(32);

        for (byte b : alg.digest())
            hexString.append(intToHexChars(0xFF & b));

        result = hexString.toString();
    } catch (Exception e) {
    }

    if (result == null)
        result = String.valueOf(s.hashCode());
    md5Cache.put(sHash, result);

    return result;
}

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 2  s  .c om
 */
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);

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

From source file:org.confab.Utilities.java

public static String md5(String pass) {
    String md5 = "";
    try {/*ww w .  j a v  a 2 s.com*/
        MessageDigest m = MessageDigest.getInstance("MD5");
        byte[] data = pass.getBytes();
        m.update(data, 0, data.length);
        BigInteger i = new BigInteger(1, m.digest());
        md5 = String.format("%1$032x", i);
    } catch (NoSuchAlgorithmException e) {
        System.out.println(e);
    }
    return md5;
}