Example usage for java.security MessageDigest getInstance

Introduction

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

Prototype

public static MessageDigest getInstance(String algorithm) throws NoSuchAlgorithmException

Source Link

Document

Returns a MessageDigest object that implements the specified digest algorithm.

Usage

From source file:Main.java

private static byte[] generateDigest(String algorithm, String... params) throws NoSuchAlgorithmException {
    StringBuilder sb = new StringBuilder(512);
    for (String s : params) {
        sb.append(s);//from w w w  .  j  a v a2  s .  c om
    }
    return MessageDigest.getInstance(algorithm).digest(sb.toString().getBytes());
}

From source file:Main.java

public static final String hash(final String s, final String algorithm) {
    try {//from   www .  j ava  2  s.  c o m
        // Create MD5 or SHA-256 Hash
        MessageDigest digest = MessageDigest.getInstance(algorithm);
        digest.update(s.getBytes());
        byte messageDigest[] = digest.digest();

        // Create Hex String
        StringBuilder hexString = new StringBuilder();
        for (byte aMessageDigest : messageDigest) {
            String h = Integer.toHexString(0xFF & aMessageDigest);
            while (h.length() < 2)
                h = "0" + h;
            hexString.append(h);
        }
        return hexString.toString();

    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }
    return "";
}

From source file:Main.java

private static MessageDigest createSHA1Digest() {
    MessageDigest digest = null;/*from  w w w.  j  a  v a 2s. c o m*/
    try {
        digest = MessageDigest.getInstance("SHA-1");
    } catch (Exception ex) {
        ex.printStackTrace();
    }
    return 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 {//ww  w .jav a 2s.  c o  m
        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 String toSHA1(String s) {
    MessageDigest md = null;//from   w  ww . j  a  va 2s  . c  o  m
    byte[] sha1hash = null;
    try {
        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();
}

From source file:Main.java

public static String getMd5Digest(String pInput) {
    if (pInput == null)
        return "";

    try {/*from w  w w.j  a v  a  2 s.com*/
        MessageDigest lDigest = MessageDigest.getInstance("MD5");
        lDigest.update(getBytes(pInput));
        BigInteger lHashInt = new BigInteger(1, lDigest.digest());
        return String.format("%1$032X", lHashInt);
    } catch (NoSuchAlgorithmException lException) {
        throw new RuntimeException(lException);
    }
}

From source file:Main.java

static MessageDigest createDigestInstance(String digestName, String provider)
        throws NoSuchAlgorithmException, NoSuchProviderException {
    if (provider == null) {
        return MessageDigest.getInstance(digestName);
    }//from  w ww.  ja  v  a  2s .c  o m

    return MessageDigest.getInstance(digestName, provider);
}

From source file:Main.java

public static String getSHA1Digest(final String pInput) {
    if (pInput != null) {
        try {//from  w w w. ja va2s. c  o  m
            final MessageDigest lDigest = MessageDigest.getInstance("SHA1");
            lDigest.update(getBytes(pInput));
            final BigInteger lHashInt = new BigInteger(1, lDigest.digest());
            return String.format("%1$032X", lHashInt);
        } catch (final NoSuchAlgorithmException lException) {
            return pInput;
        }
    }
    return null;
}

From source file:Main.java

public static String getMd5Digest(final String pInput) {
    if (pInput != null) {
        try {/*w  w w .  ja  v  a  2s.c o  m*/
            final MessageDigest lDigest = MessageDigest.getInstance("MD5");
            lDigest.update(getBytes(pInput));
            final BigInteger lHashInt = new BigInteger(1, lDigest.digest());
            return String.format("%1$032X", lHashInt);
        } catch (final NoSuchAlgorithmException lException) {
            return pInput;
        }
    }
    return null;

}

From source file:Main.java

public static String getHash(String stringToHash) {

    MessageDigest digest = null;/*from  w  ww  .j a v  a 2  s . com*/
    try {
        digest = MessageDigest.getInstance("SHA-1");
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }

    byte[] result = null;

    try {
        result = digest.digest(stringToHash.getBytes("UTF-8"));
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }

    StringBuilder sb = new StringBuilder();

    for (byte b : result) {
        sb.append(String.format("%02X", b));
    }

    String messageDigest = sb.toString();
    return messageDigest;
}