The National Security Agency is developing a quantum computer for cracking encrypted information.
Edward Snowden provided the "Washington Post" with related secret documents, and the NSA project was exposed.
The National Security Agency hopes to use this special quantum computer to speed up its password cracking work.
The National Security Agency is believed to have invested about US $ 80 million (about £ 49 million) in the project, but has not yet produced a working machine.
According to documents cited by the Washington Post, if the National Security Agency successfully develops a quantum computer, it will be used to crack the network and the encryption system used by foreign governments to ensure the security of official information.
The quantum computer research and development project in the United States is called "Penetrating Hard Targets". It is said that the project is being conducted in a laboratory in Maryland.
Many research groups in the world are committed to developing a working quantum computer, but they have so far been unable to successfully run the algorithms needed to crack the current encryption system.
Current computers try to crack encryption by many different methods, but the possible keys they generate can only decrypt one data at a time. Using a large computer can speed up the process, but using huge numbers as a password to encrypt the data makes this method much less effective.
In contrast, quantum computers use the properties of matter, and under certain conditions, this means that it can perform many, many calculations simultaneously. In fact, this makes it possible to try all passwords that protect a particular message or data stream.
The difficulty in developing a working quantum computer is how to keep the computational elements called "qubits" stable enough so that they can run and put into useful work.
The U.S. National Security Agency's research and development of quantum computers is not considered a significant breakthrough, and it has not allowed it to lead the research work in the United States and other parts of Europe. However, a document disclosed by Edward Snowden to the Washington Post showed that researchers at the institution have made some progress in developing basic assembly modules for quantum computers.
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