GB35114 SM3 封装 ,基于 bouncycastle 和 hutool-crypto 并结合jain-sip-ri

导入依赖

<dependency>
    <groupId>org.bouncycastle</groupId>
    <artifactId>bcpkix-jdk18on</artifactId>
    <version>1.78.1</version>
</dependency>

<dependency>
    <groupId>cn.hutool</groupId>
    <artifactId>hutool-crypto</artifactId>
    <version>5.8.24</version>
</dependency>

<dependency>
    <groupId>javax.sip</groupId>
    <artifactId>jain-sip-ri</artifactId>
    <version>1.3.0-91</version>
</dependency>

说明

GB35114 摘要算法
示例:BASE64(SM3(method+from+to+call-id+date+vkek+message))

Sm3Util

查看代码

@Slf4j
public class Sm3Util {


    /**
     * 构建 Nonce 值
     *
     * 算法 BASE64(SM3(method+from+to+call-id+date+vkek+message))
     * @param req SIP请求对象
     * @param vkek vkek
     * @param xmlMessage xml内容
     * @return
     */
    public static String genNonce(Request req, String vkek, String xmlMessage){
        SIPRequest request =(SIPRequest) req;
        From fromHeader = (From)request.getFromHeader();
        To toHeader =(To) request.getToHeader();
        CallID callIdHeader =(CallID) request.getCallIdHeader();
        Gb35114SIPDateHeader dateHeader = (Gb35114SIPDateHeader)request.getHeader(Gb35114SIPDateHeader.NAME);
        String method = request.getMethod();
        byte[] bytes = pack(method, fromHeader.getValue(), toHeader.getValue(), callIdHeader.getValue(), dateHeader.getValue(), vkek, xmlMessage);
        return  digest(bytes);
    }


    /**
     * 构建 Nonce 值
     *
     * 算法 BASE64(SM3(method+from+to+call-id+date+vkek+message))
     * @param resp SI响应对象
     * @param vkek vkek
     * @param xmlMessage xml内容
     * @return
     */
    public static String genNonce(Response resp, String vkek, String xmlMessage){
        SIPResponse response =(SIPResponse) resp;

        From fromHeader = (From)response.getFromHeader();
        To toHeader =(To) response.getToHeader();
        CallID callIdHeader =(CallID) response.getCallIdHeader();
        Gb35114SIPDateHeader dateHeader = (Gb35114SIPDateHeader)response.getHeader(Gb35114SIPDateHeader.NAME);
        String method = SipUtils.getResponseMethod(response);
        byte[] bytes = pack(method, fromHeader.getValue(), toHeader.getValue(), callIdHeader.getValue(), dateHeader.getValue(), vkek, xmlMessage);
        return  digest(bytes);
    }

    /**
     * 构建数据包
     * 算法 BASE64(SM3(method+from+to+call-id+date+vkek+xmlMessage))
     * @param method SIP请求方法
     * @param from From 头内容
     * @param to To 头内容
     * @param callId Call-Id  头内容
     * @param date Data 头内容
     * @param vkek vkek
     * @param xmlMessage xml内容
     * @return
     */
    public static byte[] pack(String method,String from,String to,String callId,String date,String vkek,String xmlMessage){
        byte[] bytes = method.getBytes(StandardCharsets.UTF_8);
        byte[] bytes1 = from.getBytes(StandardCharsets.UTF_8);
        byte[] bytes2 = to.getBytes(StandardCharsets.UTF_8);
        byte[] bytes3 = callId.getBytes(StandardCharsets.UTF_8);
        byte[] bytes4 = date.getBytes(StandardCharsets.UTF_8);
        byte[] bytes5 = vkek.getBytes(StandardCharsets.UTF_8);

        byte[] bytes6 = xmlMessage.getBytes(StandardCharsets.UTF_8);

        int size = bytes.length + bytes1.length+bytes2.length+bytes3.length+bytes4.length+bytes5.length+bytes6.length;
        ByteBuffer allocate = ByteBuffer.allocate(size);
        allocate.put(bytes);
        allocate.put(bytes1);
        allocate.put(bytes2);
        allocate.put(bytes3);
        allocate.put(bytes4);
        allocate.put(bytes5);
        allocate.put(bytes6);
//        log.info("数据长度：{}",size);
        return allocate.array();
    }


    /**
     * SM3摘要
     * @param data 源数据
     * @return base64编码结果
     */
    public static String digest(byte [] data){
        byte[] digest = new SM3().digest(data);
        return  Base64.encode(digest);
    }
    
}