java加密MD5,SHA-1,SHA-256,默认使用SHA-256-蒲公英云

java加密MD5,SHA-1,SHA-256,默认使用SHA-256

电玩女神 2024-04-17 05:40 147阅读 0赞

加密，对应php的代码 hash(‘sha256’, ‘xxx’);

方式一、

/**
     * 对字符串加密,加密算法使用MD5,SHA-1,SHA-256,默认使用SHA-256
     * @param strSrc 要加密的字符串
     * @param encName 加密类型
     * @return
     */
    public static String encrypt(String strSrc, String encName) {
        MessageDigest md = null;
        String strDes = null;
        byte[] bt = strSrc.getBytes();
        try {
            if (BeanUtil.isEmpty(encName)) {
                encName = "SHA-256";
            }
            md = MessageDigest.getInstance(encName);
            md.update(bt);
            strDes = bytes2Hex(md.digest()); // to HexString
        } catch (NoSuchAlgorithmException e) {
            return null;
        }
        return strDes;
    }
    public static String bytes2Hex(byte[] bts) {
        String des = "";
        String tmp = null;
        for (int i = 0; i < bts.length; i++) {
            tmp = (Integer.toHexString(bts[i] & 0xFF));
            if (tmp.length() == 1) {
                des += "0";
            }
        des += tmp;
        }
        return des;
    }

方式二、

以下传入的字符串是方式一种strSrc拼接之前的参数，实际两种方式的参数比较后相当于

String strSrc = channelID + channelKey + appID + userID + nonce + timestamp;
public static String createToken(String channelId, String channelKey, String appId, String userId,String nonce, Integer timestamp) throws NoSuchAlgorithmException {
        MessageDigest digest = MessageDigest.getInstance("SHA-256");
        digest.update(channelId.getBytes());
        digest.update(channelKey.getBytes());
        digest.update(appId.getBytes());
        digest.update(userId.getBytes());
        digest.update(nonce.getBytes());
        digest.update(Long.toString(timestamp).getBytes());
        String token = DatatypeConverter.printHexBinary(digest.digest()).toLowerCase();
        return token;
    }