Micro-processor kernel device used for cryptography arithmetic

Abstract

A kind of micro-processor inner core used for cryptology calculation relates to the cryptology technology in the information security field. The invention is connected with the program memory and data memory, used for accelerating the cryptology calculation. The invention includes: instruction register, instruction decode unit, register stack including program counter, stack pointer, data pointer, accelerating module pointer, data register, index register, comparison register and bit register, data calculation unit, program address generation unit, program memory interface, data memory interface, cryptology calculation module interface and cryptology calculation module. Comparing with current technology, the invention can not only get higher calculation speed but also make the algorithm function more flexible and more general with the way to bond the software and hardware, and it is characterized in low-cost, high performance, function collocation, flexibility and generality.

Description

technical field [0001] The invention relates to cryptography technology in the field of information security, in particular to a microprocessor core device for cryptography operations. Background technique [0002] Cryptography is a basic technology in modern information technology. It is widely used in various fields involving information security, such as data encryption, identity recognition, and electronic transactions. Efficient and safe cryptographic operations are an important component of a security system. Basic cryptographic algorithms can be roughly divided into symmetric key algorithms (such as DES and AES), asymmetric key algorithms (such as RSA and ECC), and digest algorithms (such as MD5 and SHA-1). It is an essential computing function in a system (such as a public key infrastructure, PKI). [0003] In the prior art, the common characteristics of general cryptographic algorithms are: 1) The program scale of the algorithm is small, and the flow and structure ...

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Problems solved by technology

2) The data size of the algorithm is small, but the access density is high

[0004] In the software implementation mode, the algorithm program and other programs of the system run on the same general-purpose processor. The function is flexible (parameters are easy to set), but the disadvantage is that the program can only use general-purpose instructions, and the cost of realizing special calculation functions is high, and one instruction can only complete a single function, which cannot achieve the parallel pipeline processing method commonly used in hardware implementation, so The calculation speed is low; at the same time, because the cryptographic program and other programs run on the same processor, the key and data are stored in the ordinary memory, which is easy to be attacked and has low security; in addition, it cannot be used in embedded applications (such as smart card)

[0005] In the hardware implementation mode, the dedicated hardware module implements the required cryptographic algorithm, and several sub-steps can be processed in parallel and pipelined according to the characteristics of the algorithm, thereby greatly improving the calculation speed; at the same time, the cryptographic operation is completed inside the hardware, which is not easily affected by External attacks, high security; the disadvantage is that the hardware acceleration module is usually only designed for one encryption algorithm, and the parameters of the algorithm are not easy to change (for example, only fixed-length operations can be provided for the RSA algorithm), which lacks flexibility and versatility

In addition, when multiple algorithms are required, it is necessary to design their own acceleration hardware for each algorithm. It is difficult to share the same or similar functions in different hardware, which makes the cost of the system higher.

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