A secure storage method based on a national secret chip

The invention discloses a secure storage method based on a national secret chip, and the method comprises the steps: dividing LBA data into a plurality of blocks, and configuring different keys for different blocks for encryption and decryption; Performing XOR operation on the secret key and the national secret chip ID so as to generate a new secret key, performing XOR operation on the new secretkey and the LBA of the block, generating encryption and decryption secret keys for different blocks, calculating a Hash result of the new secret key by using an SM3 algorithm, generating data with a fixed length, wherein the data is a final encryption and decryption secret key of the block; and carrying out key extension and data transmission parallel. When the storage block key is used each time,the storage block key is not stored in the chip, even if a certain key is cracked, the whole disk of data cannot be analyzed, the difficulty of cracking the whole disk of data is greatly enhanced, and the security of the key