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:MainClass.java

static Cipher createCipher(int mode) throws Exception {
    PBEKeySpec keySpec = new PBEKeySpec("test".toCharArray());
    SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("PBEWithMD5AndDES");
    SecretKey key = keyFactory.generateSecret(keySpec);
    MessageDigest md = MessageDigest.getInstance("MD5");
    md.update("input".getBytes());
    byte[] digest = md.digest();
    byte[] salt = new byte[8];
    for (int i = 0; i < 8; ++i)
        salt[i] = digest[i];/*from   www .  j  a va 2  s .co m*/
    PBEParameterSpec paramSpec = new PBEParameterSpec(salt, 20);
    Cipher cipher = Cipher.getInstance("PBEWithMD5AndDES");
    cipher.init(mode, key, paramSpec);
    return cipher;
}

From source file:Main.java

private static byte[] encryptAlgorithm(byte[] data, String algorithm) {
    try {/*from  w  w  w.  j  a v a 2  s  .com*/
        MessageDigest md = MessageDigest.getInstance(algorithm);
        md.update(data);
        return md.digest();
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }
    return new byte[0];
}

From source file:Main.java

public static byte[] encrypt(String x) throws Exception {
    java.security.MessageDigest d = null;
    d = java.security.MessageDigest.getInstance("SHA-1");
    d.reset();//w w  w.ja v a2s .com
    d.update(x.getBytes());
    return d.digest();
}

From source file:Main.java

private static byte[] hashTemplate(final byte[] data, final String algorithm) {
    if (data == null || data.length <= 0)
        return null;
    try {/*from  ww  w . ja va  2s .  c om*/
        MessageDigest md = MessageDigest.getInstance(algorithm);
        md.update(data);
        return md.digest();
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
        return null;
    }
}

From source file:Main.java

private static String hashBytes(MessageDigest hash, byte[] bytes) {
    hash.update(bytes);/*from ww  w. j a  v a2 s.  c om*/
    byte[] digest = hash.digest();
    StringBuilder builder = new StringBuilder();
    for (int b : digest) {
        builder.append(Integer.toHexString((b >> 4) & 0xf));
        builder.append(Integer.toHexString((b >> 0) & 0xf));
    }
    return builder.toString();
}

From source file:Main.java

private static byte[] hashTemplate(byte[] data, String algorithm) {
    if (data == null || data.length <= 0)
        return null;
    try {/*from w ww .ja v a  2s  .com*/
        MessageDigest md = MessageDigest.getInstance(algorithm);
        md.update(data);
        return md.digest();
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
        return null;
    }
}

From source file:Main.java

public static byte[] md5Digest(byte[] password) throws Exception {
    try {// ww w.j  av a  2  s . c  o  m
        MessageDigest alg = MessageDigest.getInstance("MD5");
        alg.update(password);
        byte[] digest = alg.digest();
        return digest;
    } catch (Exception e) {
        throw new Exception(e);
    }
}

From source file:Main.java

public static String SHA256(String text) throws NoSuchAlgorithmException {

    MessageDigest md = MessageDigest.getInstance("SHA-256");

    md.update(text.getBytes());//from   w w  w  .j av a  2s .c o m
    byte[] digest = md.digest();

    return Base64.encodeToString(digest, Base64.DEFAULT);
}

From source file:Main.java

public static String md5(String str) throws Exception {
    MessageDigest md = MessageDigest.getInstance("MD5");
    md.update(str.getBytes());/*from   w  ww  . ja v a  2 s . co m*/

    byte byteData[] = md.digest();

    StringBuffer sb = new StringBuffer();
    for (int i = 0; i < byteData.length; i++) {
        sb.append(Integer.toString((byteData[i] & 0xff) + 0x100, 16).substring(1));
    }

    return sb.toString();
}

From source file:Main.java

public static byte[] computeSHA256(byte[] convertme, int offset, int len) {
    try {/*from  w w w .j av  a 2 s  .  co  m*/
        MessageDigest md = MessageDigest.getInstance("SHA-256");
        md.update(convertme, offset, len);
        return md.digest();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}