Method for realizing security storage and algorithm storage by means of semiconductor memory device

A method for realizing data security storage by means of semiconductor memory device, comprising a semiconductor memory device, the semiconductor memory device comprising controller module as well as universal interface module and semiconductor storage medium module electrically connected with the controller module, respectively, characterized in that the method of data security storage comprises the steps of:

• dividing the semiconductor storage medium module into at least two logic memory spaces;
• using at least one of the logic memory spaces for storing the data to be protected;
• setting up and storing passwords for the semiconductor memory device and said at least one logic memory space;
• certifying the password before read/write operation;
• when writing the data to be protected in the semiconductor memory device, the controller module receiving the data from the universal interface and, after encrypting the data, storing it in the semiconductor storage medium module;
• and
• when reading the data to be protected from the semiconductor memory device, the controller module decrypting the data and transmitting the decrypted data via a universal interface.