A Linear Segmented Symmetric Encryption and Decoding Method

A symmetric encryption and segment encryption technology, which is applied in the field of data transmission and communication, and can solve the problems of low cracking difficulty and poor security.
CN111327641BActive Publication Date: 2022-05-17湖南瑞利德信息科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
湖南瑞利德信息科技有限公司
Publication Date
2022-05-17

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Abstract

The present invention provides a linear segmented symmetric encryption, encoding and decoding method. In the method, any binary sequence is segmented in units of l bits, and the password (or binary information corresponding to the password) set by the user is used for the first segment to be implanted into the right Coefficients (symmetric keys) are used as parameters for weighted probabilistic model encoding. Starting from the second segment, the uncoded binary end s (s>0) bits of the previous segment are implanted into the weight coefficients and the second segment is encoded with a weighted probability model, and so on. It has been proved that when l is long enough, any bit error in the weight coefficient or any bit error in the encoded ciphertext will cause the binary sequence to fail to be successfully decoded. Therefore, if the correct s bits at the end of the first paragraph cannot be obtained, the second paragraph cannot be decoded correctly. Compared with the prior art, the present invention uses segmented encryption, and each segment is encoded with a different key, which is difficult to crack. Larger, more secure, and segmented key-encrypted data that can be streamed.
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Description

technical field

[0001] The invention relates to the technical field of data transmission and communication, in particular to a linear segmented symmetric encryption encoding and decoding method. Background technique

[0002] With the rapid development of data communication technology, the coding and decoding technology to ensure the security of data communication has also been developed rapidly. The symmetric encryption algorithm is an earlier encryption algorithm with mature technology.

[0003] In the symmetric encryption algorithm, the data sender processes the plaintext (original data) and the encryption key together with a special encryption algorithm, turning it into complex encrypted ciphertext and sending it out. After the recipient receives the ciphertext, if he wants to interpret the original text, he needs to use the encrypted key and the inverse algorithm of the same algorithm to decrypt the ciphertext to restore it to readable plaintext. In the symmetric encryp...

Claims

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