Method and apparatus for encrypting and decrypting picture, and device

A sending device, comprising:

• one or more processors;
• memory;
• and
• one or more programs stored in the memory, wherein the one or more programs, when executed by the one or more processors, cause the sending device to perform a plurality of operations including:
• obtaining, by the sending device, raw data of a to-be-encrypted picture, a first key, a second key, and location information that is used for adding disturbance data to the raw data;
• adding, by the sending device, the disturbance data to the raw data according to the location information, to obtain first data;
• encrypting, by the sending device, the first data by using the first key, to obtain second data, and encrypting the first key and the length of the disturbance data by using the second key, to obtain first encrypted data;
• and
• sending, by the sending device, the second data, the first encrypted data, and the second key to a receiving device.

A non-transitory computer readable storage medium storing one or more programs, wherein the one or more programs, when executed one or more processors of a sending device, cause the sending device to perform a plurality of operations including:

• obtaining, by the sending device, raw data of a to-be-encrypted picture, a first key, a second key, and location information that is used for adding disturbance data to the raw data;
• adding, by the sending device, the disturbance data to the raw data according to the location information, to obtain first data;
• encrypting, by the sending device, the first data by using the first key, to obtain second data, and encrypting the first key and the length of the disturbance data by using the second key, to obtain first encrypted data;
• and
• sending, by the sending device, the second data, the first encrypted data, and the second key to a receiving device.