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:ca.qc.adinfo.rouge.util.MD5.java

public static String hash(String value) {

    try {//  www .  j a v a 2 s.  com

        MessageDigest md = MessageDigest.getInstance("MD5");
        byte[] md5hash = new byte[32];
        md.update(value.getBytes("iso-8859-1"), 0, value.length());
        md5hash = md.digest();

        return Hex.encodeHexString(md5hash);

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

From source file:baldrickv.s3streamingtool.Hash.java

/**
 * Cause apparently a hex encoded MD5 isn't good enough for S3.
 * They want a base64 encode of the raw binary hash.  blech.
 *///w w  w.j  a  v a2  s .c om
public static String getMd5ForS3(byte b[]) {
    try {
        MessageDigest sig = MessageDigest.getInstance("MD5");
        sig.update(b, 0, b.length);
        byte d[] = sig.digest();

        byte encoded[] = Base64.encodeBase64(d, false);

        return new String(encoded);

    } catch (Exception e) {

        e.printStackTrace();
        System.exit(-1);
        return null;
    }

}

From source file:Main.java

public static String getSHA(byte[] message, int length) {
    if (message == null || length <= 0) {
        return null;
    }//from ww  w  . ja v a 2 s . c  om
    try {
        MessageDigest md = MessageDigest.getInstance("SHA");
        md.update(message, 0, length);
        byte[] output = md.digest();
        String s = "";
        for (int i = 0; i < output.length; i++) {
            s += hexByte(output[i] + 128);
        }
        return s;
    } catch (Exception e) {
        e.printStackTrace();
        return null;
    }
}

From source file:baldrickv.s3streamingtool.Hash.java

public static String hash(String algo, int output_bits, byte b[], int offset, int size) {
    try {//from  ww  w .  jav a2  s.  com
        int output_bytes = output_bits / 4; //hex = 4 bits per byte
        MessageDigest sig = MessageDigest.getInstance(algo);
        sig.update(b, offset, size);
        byte d[] = sig.digest();

        StringBuffer s = new StringBuffer(output_bytes);
        BigInteger bi = new BigInteger(1, d);
        s.append(bi.toString(16));
        while (s.length() < output_bytes) {
            s.insert(0, '0');
        }
        return s.toString();
    } catch (Exception e) {
        e.printStackTrace();
        System.exit(-1);
        return null;
    }

}

From source file:org.runway.utils.TextUtils.java

/**
 * Generates MD5 for the text passed//from  w  w  w  .  j a va  2 s. com
 * @param text
 * @return
 */
public static String genMD5(String text) {
    MessageDigest m;
    try {
        m = MessageDigest.getInstance("MD5");
        m.update(text.getBytes(), 0, text.length());
        return new BigInteger(1, m.digest()).toString(16);
    } catch (NoSuchAlgorithmException e) {// return same text if there was
        // an error
        e.printStackTrace();
        return text;
    }
}

From source file:net.sf.jml.util.DigestUtils.java

private static void update(MessageDigest digest, ByteBuffer buffer) {
    if (buffer.hasArray()) {
        digest.update(buffer.array(), buffer.arrayOffset() + buffer.position(), buffer.remaining());
    } else {/*from   www.j  a va 2s  .com*/
        byte[] b = new byte[buffer.remaining()];
        buffer.get(b);
        digest.update(b);
    }
}

From source file:Main.java

private static String sha1Hash(String toHash) {
    String hash = null;//from www . j  a v  a2 s.  c  o m
    try {
        MessageDigest digest = MessageDigest.getInstance("SHA-1");
        byte[] bytes = toHash.getBytes("UTF-8");
        digest.update(bytes, 0, bytes.length);
        bytes = digest.digest();

        // This is ~55x faster than looping and String.formating()
        hash = bytesToHex(bytes);
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }
    return hash;
}

From source file:Main.java

/**
 * Method for returning an md5 hash of a string.
 * //from   w w w  .  ja va  2  s . c o m
 * @param val
 *            the string to hash.
 * @return A hex string representing the md5 hash of the input.
 */
private static String md5(String val) {
    String result = null;

    if ((val != null) && (val.length() > 0)) {
        try {
            MessageDigest md5 = MessageDigest.getInstance("MD5");
            md5.update(val.getBytes(), 0, val.length());
            result = String.format("%032X", new BigInteger(1, md5.digest()));
        } catch (NoSuchAlgorithmException nsae) {
            result = val.substring(0, 32);
        }
    }

    return result;
}

From source file:Main.java

public static String sha1Hash(String text) {
    String hash = null;//  w  ww .j  a v a  2s  .co  m
    try {
        final MessageDigest digest = MessageDigest.getInstance("SHA-1");
        final byte[] bytes = text.getBytes("UTF-8");
        digest.update(bytes, 0, bytes.length);
        hash = convertToHex(digest.digest());
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }
    return hash;
}

From source file:Main.java

/**
 * Calculates an MD5 hash for a text./*from www  .  j  ava 2s.  c  om*/
 * 
 * @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);
    }
}