Dual information encryption of carbon dots endowed with recoverable functions after interception

Conventional encryptions including single and multiple encryptions still have disadvantages, such as low security, complicated operation process and time consuming. Herein, a dual information encryption mechanism based on the exclusivity of the decryption process is proposed, which uses carbon dots (CDs) as fluorescent inks with two rounds of encryption and decryption to perform dual information encryption. The encryption process is easy to operate, and the decryption process can be completed in a short time (