Examples with MessageDigest java.security.MessageDigest used on opensource projects

Example 66 with MessageDigest

use of java.security.MessageDigest in project gitblit by gitblit.

the class StringUtils method getSHA1.

/**
	 * Calculates the SHA1 of the byte array.
	 *
	 * @param bytes
	 * @return sha1 of the byte array
	 */
public static String getSHA1(byte[] bytes) {
    try {
        MessageDigest md = MessageDigest.getInstance("SHA-1");
        md.update(bytes, 0, bytes.length);
        byte[] digest = md.digest();
        return toHex(digest);
    } catch (NoSuchAlgorithmException t) {
        throw new RuntimeException(t);
    }
}

Example 67 with MessageDigest

use of java.security.MessageDigest in project gitblit by gitblit.

the class DeepCopier method checksum.

/**
	 * Utility method to calculate the checksum of an object.
	 * @param sourceObject The object from which to establish the checksum.
	 * @return The checksum
	 * @throws IOException
	 */
public static BigInteger checksum(Object sourceObject) {
    if (sourceObject == null) {
        return BigInteger.ZERO;
    }
    try {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        ObjectOutputStream oos = new ObjectOutputStream(baos);
        oos.writeObject(sourceObject);
        oos.close();
        MessageDigest m = MessageDigest.getInstance("SHA-1");
        m.update(baos.toByteArray());
        return new BigInteger(1, m.digest());
    } catch (IOException e) {
        throw new RuntimeException(e);
    } catch (NoSuchAlgorithmException e) {
    // impossible
    }
    return BigInteger.ZERO;
}

Example 68 with MessageDigest

use of java.security.MessageDigest in project buck by facebook.

the class DexFile method calcSignature.

/**
     * Calculates the signature for the {@code .dex} file in the
     * given array, and modify the array to contain it.
     *
     * @param bytes {@code non-null;} the bytes of the file
     */
private static void calcSignature(byte[] bytes) {
    MessageDigest md;
    try {
        md = MessageDigest.getInstance("SHA-1");
    } catch (NoSuchAlgorithmException ex) {
        throw new RuntimeException(ex);
    }
    md.update(bytes, 32, bytes.length - 32);
    try {
        int amt = md.digest(bytes, 12, 20);
        if (amt != 20) {
            throw new RuntimeException("unexpected digest write: " + amt + " bytes");
        }
    } catch (DigestException ex) {
        throw new RuntimeException(ex);
    }
}

Example 69 with MessageDigest

use of java.security.MessageDigest in project fresco by facebook.

the class SecureHashUtil method makeHash.

private static String makeHash(byte[] bytes, String algorithm) {
    try {
        MessageDigest md = MessageDigest.getInstance(algorithm);
        md.update(bytes, 0, bytes.length);
        byte[] hash = md.digest();
        return convertToHex(hash);
    } catch (NoSuchAlgorithmException e) {
        throw new RuntimeException(e);
    } catch (UnsupportedEncodingException e) {
        throw new RuntimeException(e);
    }
}

Example 70 with MessageDigest

use of java.security.MessageDigest in project XobotOS by xamarin.

the class HttpResponseCache method uriToKey.

private String uriToKey(URI uri) {
    try {
        MessageDigest messageDigest = MessageDigest.getInstance("MD5");
        byte[] md5bytes = messageDigest.digest(uri.toString().getBytes(Charsets.UTF_8));
        return IntegralToString.bytesToHexString(md5bytes, false);
    } catch (NoSuchAlgorithmException e) {
        throw new AssertionError(e);
    }
}