腾讯云TLS签名API 整理官方代码 参考 原始文档: http://avc.qcloud.com/wiki2.0/im/%E5%B8%90%E5%8F%B7%E7%99%BB%E5%BD%95%E9%9B%86%E6%88%90/TLS%E5%90%8E%E5%8F%B0API%E4%BD%BF%E7%94%A8%E6%89%8B%E5%86%8C/TLS%E5%90%8E%E5%8F%B0API%E4%BD%BF%E7%94%A8%E6%89%8B%E5%86%8C.html 原始java代码(协议未知): http://share.weiyun.com/2b3abe0e3f185c440cf455647455f661