Encryption technology is an effective way to protect important information and maintain network security. It is also one of the most commonly used protection measures, such as the current file encryption technology. In the process of network information security, appropriate encryption technology and management mechanism can be used. In fact, the principle of this encryption technology is to transform an information into a string of ciphertext which seems to have no rules and no meaning after processing a key or function, and then it can become plaintext after decryption, so as to achieve the purpose of protecting information security [2]. When sending encrypted data, the single key encryption technology needs to inform the receiver of the key transmission through the network. If the third party intercepts the encrypted data, it only needs to intercept the key to decrypt the data, thus using the data or making illegal tampering. But hacker technology, virus and so on are also developing and improving constantly. The height of this improvement may have been able to crack the existing encryption techniques. When the encryption technology is cracked, it will no longer have the significance of encryption. It is equivalent to a "paper tiger", so that the traditional encryption techniques can no longer effectively maintain the network security. Therefore, the improvement of encryption technology is urgent.<br>
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