Quantum encryption-based electricity use information acquisition security protection method and system

The present invention provides a quantum encryption-based electricity use information acquisition security protection method and system. The method includes the following steps that: an electricity use information acquisition end receives a key ciphertext distributed by a key online distribution device, wherein the key ciphertext is a ciphertext which is obtained by encrypting a decryption key through using a quantum key; and the electricity use information acquisition end decrypts the key ciphertext through using the quantum key so as to obtain the decryption key. With the method of the present invention adopted, the real-time performance of key transmission is improved, and the security of the update of the decryption key is guaranteed. 本申请提供了种基于量子加密的用电信息采集安全防护方法及系统，方法包括：用电信息采集端接收密钥在线分发装置下发的密钥密文，密钥密文为采用量子密钥对解密密钥进行加密得到的密文；用电信息采集端使用量子密钥对密钥密文进行解密，得到解密密钥。在本申请中，通过以上方式提高了密钥传输的实时性，同时，保障了解密密钥的更新的安全性。