Data hiding and rapid destroying method

The invention relates to a data hiding and rapid destroying method, and belongs to the field of data security. The method comprises the steps of data block storage, data hiding and rapid data destruction. Wherein the data hiding specifically comprises the following steps of: recording a host space: creating a node information linked list for recording a relationship between the host space and a hidden file, and accessing a disk sector by adopting a file reading and writing mode; file encryption: performing encryption and decryption processing on the original storage data through an encryption algorithm; the ciphertext information record is similar to the host space record and adopts a linked list data structure to store ciphertext information, including a file ID, a file complete path, a file attribute and the like; file transfer and storage: reading file attribute information, and selecting a proper idle sector for file transfer and storage. Wherein the rapid data overwriting specifically comprises multiple