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:Main.java

/**
 * Get current certificate fingerprint/* w  ww  .jav  a  2s  .c  o m*/
 *
 * @param ctx         context of application
 * @param packageName your package name
 * @return Base64 packed SHA fingerprint of your packet certificate
 */
public static String[] getCertificateFingerprint(Context ctx, String packageName) {
    try {
        if (ctx == null || ctx.getPackageManager() == null)
            return null;
        PackageInfo info = ctx.getPackageManager().getPackageInfo(packageName, PackageManager.GET_SIGNATURES);
        assert info.signatures != null;
        String[] result = new String[info.signatures.length];
        int i = 0;
        for (Signature signature : info.signatures) {
            MessageDigest md = MessageDigest.getInstance("SHA");
            md.update(signature.toByteArray());
            //                result[i++] = Base64.encodeToString(md.digest(), Base64.DEFAULT);
            result[i++] = toHex(md.digest());
        }
        return result;
    } catch (Exception e) {
        return null;
    }
}

From source file:com.drisoftie.cwdroid.util.CredentialUtils.java

public static String md5(final String s) {
    try {// w  w  w .j a v a  2s .c  om
        // Create MD5 Hash
        MessageDigest digest = java.security.MessageDigest.getInstance(MD5);
        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:de.hybris.platform.b2b.punchout.services.impl.AsymmetricManager.java

/**
 * Generates a hash using asymmetric encryption.
 * /*w w w . j  ava 2  s.c o m*/
 * @param unsecureText
 *           The text to be hashed.
 * @param salt
 *           The salt used to defend against dictionary and rainbow table attacks.
 * @return The hash.
 */
public static String getHash(final String unsecureText, final String salt) {
    try {
        final MessageDigest digest = MessageDigest.getInstance(ALGORITHM);
        digest.update(unsecureText.getBytes(CHAR_SET));
        digest.update(salt.getBytes(CHAR_SET));
        final byte[] byteData = digest.digest();

        //convert the byte to hex format method 1
        final 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();
    } catch (NoSuchAlgorithmException | UnsupportedEncodingException e) {
        // should never happen
        LOG.error("System was unable to generate the hash.", e);
    }
    return null;
}

From source file:Main.java

static String md5hash(String key) {
    MessageDigest hash = null;
    try {/*from w ww .  j  a  v  a2s  .  c om*/
        hash = MessageDigest.getInstance(HASH_ALGORITHM_MD5);
    } catch (NoSuchAlgorithmException e) {
        return null;
    }

    hash.update(key.getBytes());
    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 String sha256Hex(final String filePath) throws NoSuchAlgorithmException, IOException {
    final InputStream fis = new BufferedInputStream(new FileInputStream(filePath));
    final MessageDigest md = MessageDigest.getInstance("SHA-256");

    final byte[] dataBytes = new byte[1024];

    int nread;//from   w  w w. ja  v a  2s.co  m
    while ((nread = fis.read(dataBytes)) != -1)
        md.update(dataBytes, 0, nread);
    final byte[] mdbytes = md.digest();

    final StringBuilder sb = new StringBuilder();
    for (final byte b : mdbytes)
        sb.append(Integer.toString((b & 0xff) + 0x100, 16).substring(1));

    return sb.toString();
}

From source file:com.ikanow.infinit.e.api.authentication.PasswordEncryption.java

public static String md5checksum(String toHash) {
    try {//from  ww w .  j av  a 2 s  .  c o  m
        MessageDigest m = MessageDigest.getInstance("MD5");
        m.reset();
        m.update(toHash.getBytes(Charset.forName("UTF8")));
        byte[] digest = m.digest();
        return new String(Hex.encodeHex(digest));
    } catch (Exception ex) {
        return toHash;
    }
}

From source file:Main.java

/**
 * generates MD5 of input string//from w  w w  . j a v a 2s. c  om
 *
 * @param input string to be hashed
 * @return MD5 hash of string
 */
public static String getMD5(String input) {

    MessageDigest m = null;
    try {
        m = MessageDigest.getInstance("MD5");
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }
    m.reset();
    m.update(input.getBytes());
    byte[] digest = m.digest();
    BigInteger bigInt = new BigInteger(1, digest);
    String hashtext = bigInt.toString(16);
    //zero pad to get the full 32 chars.
    while (hashtext.length() < 32) {
        hashtext = "0" + hashtext;
    }
    return hashtext;
}

From source file:com.jredrain.base.utils.Digests.java

public static String sha1(String decript) {
    try {/*from   w w w . ja va2 s . com*/
        MessageDigest digest = MessageDigest.getInstance("SHA-1");
        digest.update(decript.getBytes());
        byte messageDigest[] = digest.digest();
        // Create Hex String
        StringBuffer hexString = new StringBuffer();
        // ? ?? 
        for (int i = 0; i < messageDigest.length; i++) {
            String shaHex = Integer.toHexString(messageDigest[i] & 0xFF);
            if (shaHex.length() < 2) {
                hexString.append(0);
            }
            hexString.append(shaHex);
        }
        return hexString.toString();

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

From source file:altermarkive.uploader.Report.java

private static String hash(String text) {
    String hash = null;/*ww  w  .  j  a  va  2s  .c om*/
    try {
        MessageDigest md = MessageDigest.getInstance("SHA-256");
        md.update(text.getBytes());
        BigInteger integer = new BigInteger(1, md.digest());
        hash = String.format("%1$032X", integer);
    } catch (NoSuchAlgorithmException exception) {
        String trace = Log.getStackTraceString(exception);
        String message = String.format("MD5 is not available:\n%s", trace);
        Log.e(TAG, message);
    }
    return hash;
}

From source file:Main.java

public static String getMD5(String value) {
    if (value == null || value.length() == 0)
        return null;

    MessageDigest m = null;

    try {/*from  w  ww.j  a v  a2s.com*/
        m = MessageDigest.getInstance("MD5");
    } catch (NoSuchAlgorithmException e) {
        return null;
    }

    m.update(value.getBytes(), 0, value.length());
    return new BigInteger(1, m.digest()).toString(16).toUpperCase(Locale.getDefault());
}