A brief talk on computer interdisciplinary--Quantum cipher

With the development of modern science and technology, the mutual infiltration, crossover and synthesis of different disciplines have become an important trend in the development of science and technology today. Contemporary science is a highly differentiated and highly integrated development trend, which pushes the interdisciplinary disciplines to the forefront of the technological tide, making it one of the main fields of knowledge innovation.

Modern scientific development, especially scientific discoveries and the settlement of major social problems in the nation's livelihood, often involve cross-crossing and infiltration of different disciplines. Nowadays, in the era of knowledge economy, many major scientific, economic and social problems faced by mankind, such as population, resources and environment, are difficult to cope with by any discipline alone, and only by using the knowledge of natural science and humanities and social science and advanced technical means can we form the best solution to the problem of the century.

Since 1946 ENIAC (the world's first multi-functional, all-electronic digital computer) successfully developed, in the last 30 years of 20th century, achieved a lot of milestone scientific performance, has been amazing development, from being considered only a single course of programming, extended to include system structure, software theory, application technology, An independent discipline of information security and other disciplines, such as artificial intelligence, e-commerce, computer graphics, quantum communication, bioinformatics and so on, that intersect with electronic engineering, physics, Mathematics, Biology, economics, and language.

The greatest advantage of interdisciplinary disciplines is to increase the breadth of knowledge, break through the limitations of a single discipline, and reveal the diversity of the forms of material movement, thus filling the gap between disciplines. This phenomenon often occurs in scientific research: a major theoretical problem that has not been solved in a discipline for a long time, and if it breaks through the limitations of the subject, it may be possible to make a major breakthrough by using multi-disciplinary joint inquiry method.

Take the quantum cipher as an example, since the birth of human civilization, there is a need for secrecy. For thousands of of years, secrecy and spy, like Spears and shields, are shadow, and the struggles between them have never ceased, and the advent of quantum cryptography will theoretically be the terminator of this struggle.

Modern cryptography is based on rigorous mathematics, which is used to measure the security of various cryptographic systems. The famous public-key cryptosystem ――rsa cryptosystem, based on the fact that the classical computer can not complete the large number decomposition in the effective time, that is, the cost of deciphering the password is beyond the value of the ciphertext information, the time of deciphering the password is beyond the valid life period of the ciphertext information, but it is only the security of the computation. At present, all the cryptography system, in addition to a secret, can not be unconditional security: No matter how many cipher text can be used, is not enough to uniquely determine the ciphertext corresponding to the plaintext. And once a secret, because of the existence of a large key distribution problem, is rarely used in practice.

Quantum cryptography, which uses the characteristics of quantum states to ensure the security of information, is based on quantum mechanics and has a unique physical property: During communication, if a third party attempts to eavesdrop on a password, both parties will perceive it and, even more surprisingly, it can change automatically while being tapped. There is no doubt that this is a really safe, non-eavesdropping, unbreakable password, it will end the dream of hackers.

Quantum cryptography, through the integration of quantum mechanics and computer science, has promoted the research of the neglected fields of traditional cryptography, and has broken the monopoly phenomenon of cryptography based on mathematical algorithms, and put forward a new way to solve it. It puts forward a big step forward to the cognition way and thinking method of cryptography, so that the frontier field of cryptography has been greatly extended. Its success is benefiting from the application of interdisciplinary disciplines, in order to enable scientists to break through the traditional way of thinking, to open up an unprecedented field of thinking, burst out the spark of innovation, to establish a unique, innovative ideas.

The intersection, infiltration, integration and innovation of disciplines are the important characteristics of the trend of scientific synthesis and differentiation, and also the inevitable trend of discipline development. The 21st century is characterized by the creation of the era, the times need those who are creative beyond talent. Therefore, it is a challenging task to develop interdisciplinary disciplines and cultivate high-level compound talents with many kinds of knowledge accomplishment, broad scientific field of vision and ability to grasp the internal links among disciplines.

A brief talk on computer interdisciplinary--Quantum cipher