Method and system for obtaining public and private keys

A method and system for obtaining public and private keys are provided. The method comprises the following steps: a client sends a first authentication request to a key server, wherein the first authentication request comprises a user authentication token; in response to the user authentication token authenticated by the key server as valid, the key server sends a second authentication request toa communication server, wherein the second authentication request comprises a user authentication token; in response to the user authentication token authenticated by the communication server as valid, the communication server sends user information to the key server; and the key server generates public and private keys according to the received user information, and sends the generated public andprivate keys to the client. 提供了种获取公私钥的方法和系统，其中该方法包括：客户端向密钥服务器发送第认证请求，其中第认证请求包括用户认证令牌；响应于用户认证令牌被密钥服务器认证为有效，密钥服务器向通讯服务器发送第二认证请求，第二认证请求包括用户认证令牌；响应于用户认证令牌被通讯服务器认证为有效，通讯服务器向密钥服务器发送用户信息；以及密钥服务器根据接收到的用户信息生成公私钥，并将生成的公私钥发送给客户端。