The invention discloses a digital identity authentication method which is applied to a blockchain platform and comprises the following steps: responding to a digital identity information acquisition request sent by a user terminal, and sending a digital identity information ciphertext of a target user to the user terminal, so that the user terminal decrypts the digital identity information ciphertext to generate a digital identity information plaintext; responding to a digital identity information acquisition request sent by the verification terminal, and sending the digital identity information ciphertext of the target user and the security level to a verification terminal, so that the verification terminal judges whether the digital identity information ciphertext is matched with the digital identity information plaintext submitted by the user terminal or not, and if yes, performing security verification corresponding to the security level on the user terminal. The invention furtherdiscloses a digital identity authentication device, device and system and a computer readable storage medium. According to the invention, customized demands for various authentication modes can be met, and the security and reliability of digital identity authentication are improved.

本发明公开了一种数字身份认证方法，应用于区块链平台，包括：响应于用户终端发送的数字身份信息获取请求，将目标用户的数字身份信息密文发送至用户终端，以便用户终端对数字身份信息密文进行解密以生成数字身份信息明文；响应于验证终端发送的数字身份信息获取请求，将目标用户的数字身份信息密文以及安全层级发送至验证终端，以便验证终端判断数字身份信息密文与用户终端提交的数字身份信息明文是否匹配，若是，则对用户终端进行与安全层级对应的安全验证。本发明还公开了一种数字身份认证设备、装置、系统及计算机可读存储介质。本发明可满足对多种认证方式的定制化需求，提高了数字身份认证的安全可靠性。