The invention relates to the technical field of data processing, and discloses a key data area data processing method and device and a set top box. The method comprises the following steps: receivingthe encrypted block data and carrying out secondary encryption on the encrypted block data; obtaining block data after secondary encryption; generating a first cyclic redundancy check code according to the block data subjected to the secondary encryption, burning the block data subjected to secondary encryption and the first cyclic redundancy check code into a block corresponding to the key data area, wherein the blocks of the key data area comprise at least two blocks and special blocks; after the burning of each block in the key data area is finished, obtaining the key data area data, generating a second cyclic redundancy check code according to the key data area data, encrypting the second cyclic redundancy check code to obtain an encrypted second cyclic redundancy check code, and burning the initial position and size of each block of the key data area and the encrypted second cyclic redundancy check code into the special block. The data security of the key data area can be ensured.

Key data area data processing method and device and set top box

The embodiment of the invention discloses a data storage method, a device, an apparatus and a computer-readable storage medium. Wherein the method comprises the steps of: before the user uploads the data, encrypting the raw data on the local client, and generating a check code, uploading the encrypted data and the check code to the cloud server respectively, when the cloud server receives the encrypted data and parity check code, recording current timestamp, and irreversibly encrypting the timestamp and the check code, generating a permission check code, then encrypting the time stamp, the check code and the encrypted data twice, and returning the time stamp to the local client, so that the user can confirm the legitimacy of the user by comparing the time stamp and the check code of the local client with the permission check code when downloading the encrypted data. The application can effectively prevent illegal intruders from stealing the data content stored in the cloud, thereby more effectively protecting the privacy of the data stored on the cloud storage server by the user, and improving the security of the data stored on the cloud by the user.

Data storage method, device, apparatus, and computer-readable storage medium

The invention relates to the technical field of information processing, and discloses a data encryption method, a data decryption method and related devices. The data encryption method comprises the steps that to-be-encrypted data is obtained, a block running number is assigned to the to-be-encrypted data, serial numbers are assigned to all characters in the to-be-encrypted data and a stray parameter is assigned to each character; a cyclic redundancy check code of the to-be-encrypted data is calculated, and the following operations are carried out on each character: based on a DES encryption algorithm, a fixed code corresponding to each character is calculated according to the cyclic redundancy check code, block running number, character, and serial number corresponding to the character ofthe to-be-encrypted data, and according to the fixed code and the stray parameter corresponding to the character, the character is encrypted to obtain an encryption character; each encryption character is obtained sequentially, and according to all encryption characters, an encryption block of the to-be-encrypted data is generated. The data encryption method and the data decryption method can effectively prevent leveling data from being damaged and tampered.

Data encryption method, data decryption method and related devices

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Data encryption method, data decryption method and related devices