Information processing method, terminal and computer storage medium

An application server terminal, comprising:

• a memory;
• and
• a processor coupled to the memory, the processor being configured to:
• obtain a first image from a user terminal;
• generate and store a first encryption key based on the first image to form a pre-stored first encryption key;
• in response to an authentication request, facilitate presentation on a screen of the user terminal a portion but not entirety of the first image as authentication prompting information;
• receive from the user terminal a second image, the second image being a copy of the first image;
• extract a first image characteristic and a second image characteristic from the second image, obtain a third image characteristic based on the first image characteristic and the second image characteristic, and determine the third image characteristic as a second encryption key, wherein the first image characteristic represents background information of the first image, and the second image characteristic represents foreground information of the first image, the foreground information represents information of one or more objects in the first image which are acquired as a category of main objects during obtaining of the first image, and the background information represents information of the remaining portions of the first image excluding the category of the main objects;
• perform similarity matching on the second encryption key and the pre-stored first encryption key to generate a matching result;
• and
• authenticate a second image according to the matching result.

A non-transitory computer-readable storage medium having stored thereon computer-executable instructions for executing an information processing method, the information processing method comprising:

• obtaining, by an application server terminal, a first image from a user terminal;
• generating and storing a first encryption key based on the first image to form a pre-stored first encryption key;
• in response to an authentication request, presenting, on a screen of the user terminal, a portion but not entirety of the first image as authentication prompting information;
• sending to the application server terminal, by the user terminal, a second image, the second image being a copy of the first image;
• extracting a first image characteristic and a second image characteristic from the second image, wherein the first image characteristic represents background information of the first image, and the second image characteristic represents foreground information of the first image, the foreground information represents information of one or more objects in the first image which are acquired as a category of main objects during obtaining of the first image, and the background information represents information of the remaining portions of the first image excluding the category of the main objects;
• obtaining a third image characteristic based on the first image characteristic and the second image characteristic, and determining the third image characteristic as a second encryption key;
• performing similarity matching on the second encryption key and the pre-stored first encryption key to generate a matching result;
• and
• authenticating the second image according to the matching result.