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(byte[] input)

Source Link

Document

Performs a final update on the digest using the specified array of bytes, then completes the digest computation.

Usage

From source file:Main.java

public static byte[] simpleHash256(byte[] msg) throws NoSuchAlgorithmException {
    MessageDigest sha256 = MessageDigest.getInstance(SHA_256);
    byte[] byteHolder1, byteHolder2;
    byteHolder1 = sha256.digest(msg);
    for (int i = 0; i < 100; i++) {
        byteHolder2 = sha256.digest(byteHolder1);
        byteHolder1 = sha256.digest(byteHolder2);
    }//w w w . j  ava  2 s .c  o m
    return byteHolder1;
}

From source file:Main.java

/**
 * SHA256 implementation/* w ww.  j  a va 2  s .c o  m*/
 * @param toHash the cleartext string
 * @return a SHA256 hashed string
 */
public static String sha256(final String toHash) {
    try {
        MessageDigest digest = MessageDigest.getInstance("SHA-256");
        byte[] hash = digest.digest(toHash.getBytes());
        StringBuilder hexString = new StringBuilder();

        for (byte aHash : hash) {
            String hex = Integer.toHexString(0xff & aHash);
            if (hex.length() == 1) {
                hexString.append('0');
            }
            hexString.append(hex);
        }

        return hexString.toString();
    } catch (Exception ex) {
        throw new RuntimeException(ex);
    }
}

From source file:Main.java

public static String getMd5Hash(String buffer) {
    MessageDigest md;
    try {//from  w  w w  . j ava  2  s.c  o  m
        md = MessageDigest.getInstance("MD5");
        return bytesToHex(md.digest(buffer.getBytes("UTF-8")));
    } catch (NoSuchAlgorithmException | UnsupportedEncodingException ignore) {
    }
    return "";
}

From source file:Main.java

public static String MD5(String md5) {
    if (md5 == null) {
        return null;
    }//from w ww.ja  va  2 s  .  c om
    try {
        java.security.MessageDigest md = java.security.MessageDigest.getInstance("MD5");
        byte[] array = md.digest(md5.getBytes());
        StringBuilder sb = new StringBuilder();
        for (byte anArray : array) {
            sb.append(Integer.toHexString((anArray & 0xFF) | 0x100).substring(1, 3));
        }
        return sb.toString();
    } catch (java.security.NoSuchAlgorithmException e) {
        Log.e("tmessages", e.getMessage());
    }
    return null;
}

From source file:Main.java

/** Returns a 32 character string containing a hash of {@code s}. */
public static String hash(String s) {
    try {/*from   w w  w. j  ava 2  s.  c  o m*/
        MessageDigest messageDigest = MessageDigest.getInstance("MD5");
        byte[] md5bytes = messageDigest.digest(s.getBytes("UTF-8"));
        return bytesToHexString(md5bytes);
    } catch (NoSuchAlgorithmException e) {
        throw new AssertionError(e);
    } catch (UnsupportedEncodingException e) {
        throw new AssertionError(e);
    }
}

From source file:Main.java

public static byte[] dataDigest(String in) {
    byte[] sum = null;

    try {//from  ww w .  j a  va2 s . c  o  m
        MessageDigest md = MessageDigest.getInstance("SHA-1");
        byte[] bytes = in.getBytes("UTF8");
        sum = md.digest(bytes);

    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }
    return sum;
}

From source file:controlpac.EncryptHelper.java

public static String Desencriptar(String textoEncriptado) {
    String base64EncryptedString = "";
    try {/*  w  w  w.  jav a 2 s . com*/
        byte[] message = Base64.decodeBase64(textoEncriptado.getBytes("utf-8"));//Desencodea el texto en base64
        MessageDigest md = MessageDigest.getInstance("MD5");
        byte[] digestOfPassword = md.digest(secretKey.getBytes("utf-8")); //Crea un hash con la clave elegida
        byte[] keyBytes = Arrays.copyOf(digestOfPassword, 24);
        SecretKey key = new SecretKeySpec(keyBytes, "DESede");//Crea la clave 
        Cipher decipher = Cipher.getInstance("DESede");
        decipher.init(Cipher.DECRYPT_MODE, key); //Inicia el descifrado
        byte[] plainText = decipher.doFinal(message);//Descifra el texto
        base64EncryptedString = new String(plainText, "UTF-8");
    } catch (Exception ex) {
    }
    return base64EncryptedString;
}

From source file:fr.cph.stock.security.Security.java

/**
 * Encode to sha256 the user password//from www . j  a  v a  2s.  c  o  m
 * 
 * @param str
 *            the password to encode
 * @return an encoded string
 * @throws NoSuchAlgorithmException
 *             the NoSuchAlgorithmException
 * @throws UnsupportedEncodingException
 *             the UnsupportedEncodingException
 */
public static String encodeToSha256(final String str)
        throws NoSuchAlgorithmException, UnsupportedEncodingException {
    MessageDigest digest = MessageDigest.getInstance("SHA-256");
    byte[] hash = digest.digest(str.getBytes("UTF-8"));
    String encoded = Hex.encodeHexString(hash);
    return encoded;
}

From source file:in.bookmylab.Utils.java

public static String hashPassword(String password) {
    String hashed = null;/*w w  w  .  j ava2  s . c  om*/
    try {
        if (!StringUtils.isBlank(password)) {
            MessageDigest digest = MessageDigest.getInstance("SHA-256");
            byte[] hash = digest.digest((salt + password).getBytes(StandardCharsets.ISO_8859_1));
            //hashed = Base64.getEncoder().encodeToString(hash);
            hashed = Base64.encodeBase64String(hash);
        }
    } catch (NoSuchAlgorithmException ex) {
        log.log(Level.SEVERE, "Could not hash string.", ex);
    }
    return hashed;
}

From source file:io.ucoin.ucoinj.core.util.crypto.DigestUtils.java

public static String sha1Hex(String message, String encoding) {
    try {//  w  ww  .ja va  2 s  . c  om
        MessageDigest md = getSHA1Instance();
        return encodeHex(md.digest(message.getBytes(encoding)));
    } catch (UnsupportedEncodingException e) {
        throw new RuntimeException(e);
    }
}