牛信默认加解密

public class CryptoNumberUtil {

    private static Logger logger = LoggerFactory.getLogger(CryptoNumberUtil.class);

    /**
     * 加密
     * @param phone
     * @param salt
     * @return
     */
    public static String encode(Long phone, Long salt) {
        String phoneStr = phone + "";
        int len = phoneStr.length();
        String prefix = "";
        int suffix = 0;
        if (len > 8) {
            prefix = phoneStr.substring(0, len - 8);
            phoneStr = phoneStr.substring(len - 8);
            phone = Long.valueOf(phoneStr);
            suffix = 8 - phone.toString().length();
        } else {
            phone = Long.valueOf(phoneStr);
            suffix = len - phone.toString().length();
        }
        // 假设此处phone=0x1234_5678
        Long newPhone = (phone & 0xff000000); /// newphone=0x1200_0000
        newPhone += (phone & 0x0000ff00) << 8; //(phone & 0x0000ff00) << 8 = 0x0000_5600 << 8 = 0x0056_0000
        newPhone += (phone & 0x00ff0000) >> 8; //(phone & 0x00ff0000) >> 8 = 0x0034_0000 >> 8 = 0x0000_3400
        newPhone += (phone & 0x0000000f) << 4; //(phone & 0x0000000f) << 4 = 0x0000_0008 << 4 = 0x0000_0080
        newPhone += (phone & 0x000000f0) >> 4; //(phone & 0x000000f0) >> 4 = 0x0000_0070 >> 4 = 0x0000_0007
        newPhone ^= salt;
        return prefix + "" + newPhone + "" + suffix + "" + newPhone.toString().length();
    }

    /**
     * 解密
     * @param phoneStr
     * @param salt
     * @return
     */
    public static String decode(String phoneStr, Long salt) {
        int len = phoneStr.length();
        //后面两位是附加信息
        if (len < 2) {
            return null;
        }
        int newPhoneLen = Integer.parseInt(phoneStr.substring(len - 1));
        if(newPhoneLen == 0){
            return null;
        }
        int suffix = Integer.parseInt(phoneStr.substring(len-2, len-1));
        if (2 + newPhoneLen > len) {
            return null;
        }
        Long newPhone = Long.valueOf(phoneStr.substring(len-2-newPhoneLen, len-2));
        String prefix = "";
        //获取前缀
        if (len > (newPhoneLen+2)){
            prefix = phoneStr.substring(0,len-2-newPhoneLen);
        }
        //还原后面的值，按十六进制的位数来各自还原，并将它们相加或者|
        newPhone ^= salt;
        Long phone = (newPhone & 0xff000000);
        phone += (newPhone >> 8) & 0x0000ff00;
        phone += (newPhone << 8) & 0x00ff0000;
        phone += (newPhone >> 4) & 0x0000000f;
        phone += (newPhone << 4) & 0x000000f0;
        //suffix不为0，则表示需要在中间补零
        if (suffix > 0 ){
            for (int i = 0;i < suffix;i++) {
                prefix = prefix + "0";
            }
        }
        return prefix + "" + phone;
    }

    /**
     * 字符串的盐转成long
     * @param str
     * @return
     */
    public static long djbHash(String str) {
        int hash = 0;
        for (int i = 0; i < str.length(); i++) {
            hash = (hash << 5) + hash + str.charAt(i);
        }
        return (long) (hash & ((1<<26)-1));
    }

    public static void main(String[] args) {
        System.out.println(djbHash("11111111"));
        String ss = CryptoNumberUtil.decode("13686542566", djbHash("11111111"));
        System.out.println(ss);
    }
}
* 其中salt可以通过管理员帐号在: 管理->呼叫中心设置->号码加密->{开启号码加密,获取盐值}
开发者对接指引
