Identity information acquisition method and related device

The invention discloses an identity information acquisition method and a related device, which are used for preventing lawbreakers from acquiring identity information of a user by attacking a communication process, and can effectively guarantee information security of the user. The method comprises the steps of when a first identity information request is obtained, encrypting the first identity information request through a first symmetric key to obtain a second identity information request; encrypting the first symmetric key through a public key to obtain a second symmetric key; sending the second identity information request and the second symmetric key to the server; receiving encrypted identity information sent by the server, wherein the encrypted identity information is encrypted by the server through the first symmetric key; and decrypting the encrypted identity information through the first symmetric key to obtain target identity information. 本申请公开了一种身份信息的获取方法及相关装置，用于避免不法分子通过对通信过程进行攻击而获得用户的身份信息，能够有效保障用