java实现Sha1加密工具类

public class Sha1Util {

        public static String getSha1(byte[] input) throws NoSuchAlgorithmException {
            MessageDigest mDigest = MessageDigest.getInstance("SHA1");
            byte[] result = mDigest.digest(input);
            StringBuffer sb = new StringBuffer();
            for (int i = 0; i < result.length; i++) {
                sb.append(Integer.toString((result[i] & 0xff) + 0x100, 16).substring(1));
            }
            return sb.toString();
        }
    }