2 results about "Improved method" patented technology

This invention discloses a method and apparatus for improving the security of data cards, relating to the field of information security, and is invented to enhance the security of information stored in data cards. The method includes: binding a data card inserted into a first terminal to the first terminal; generating a decryption password; when a read / write operation is required on the data card, determining whether a second terminal requiring the read / write operation is the first terminal, and if so, decrypting the data card using the decryption password. This invention is mainly applicable to various data cards.

This invention provides an improved method, system, and computer program for performing matrix multiplication computer instructions. [Solution] The method is a processor having a control register and a vector register whose length is indicated in the control register, in which a matrix operation A × B = C is performed, where A is an M × K matrix with elements of a first bit width, B is a K × N matrix with elements of a second bit width, and C is an M × N matrix with elements of a third bit width. The instruction has three parameters that encode the type of multiplication to be performed and indicate which vector register to sequentially store the elements of each matrix in. The method also obtains the length from the control register, decodes the instruction to obtain the multiplication type, determines the first and second bit widths according to the multiplication type, determines the values ​​of M, N, and K according to the length and the first and second bit widths, and performs matrix multiplication considering the three parameters, the first and second bit widths, and the values ​​of M, N, and K.