Random sequence based encryption method with misleading function

Abstract

The invention relates to an encryption method with a misleading function, which is used for the stealing of keys, and the seizing, rubber-hose cryptanalysis and ciphertext only attacks to a key holder. When the encryption is performed by using the method disclosed by the invention, a false key can be obtained easily so as to mislead a password analyst, and the misleading is decided by an inner key, for carrying out any misleading, a sub-key is generated by using a long random sequence, and the long random sequence can be generated through quantum key distribution. Tags in a document are processed in a special processing mode, so that even a specified tag appears in a text, a confusion phenomenon does not occur. In the process of encryption, a key word database is required, so that in the process of inner encryption, the expansion on key words is performed by using the database, and the outer encryption is performed by using the conventional encryption method. In the method, in the process of decryption, the support of the database is not required, thereby avoiding the occurrence of a database synchronization problem. The method disclosed by the invention has a certain application value in encryption applications in various occasions, especially in the military field.

Description

technical field [0001] The invention belongs to the field of information security and relates to an encryption method, in particular to an encryption method with a misleading function. Background technique [0002] The probability of obtaining meaningful plaintext by decrypting the plaintext obtained by most existing cryptographic algorithms with a wrong key is very small. This kind of wrong key that can obtain meaningful ciphertext is called a false key. As the ciphertext increases, the number of pseudo-keys will gradually decrease. The pseudo-keys will be reduced to only one key at the end, which will threaten the security of the cryptographic system. The unique solution distance is when the ciphertext is tried with different keys, and only the length of a meaningful plaintext can be obtained. In fact, the estimation formula of the unique solution distance does not consider that the real ciphertext must exist, and is not affected by The impact of plaintext redundancy has...

AI Technical Summary

Problems solved by technology

(4) You can take the initiative to mislead the other party, the wrong key can get meaningful plaintext to mislead the other party, and use the false key to get various similar and opposite "plaintexts", which have a certain "offsetting" effect compared with the original plaintext, Confused cryptanalysts

When the other party performs ciphertext-only analysis, the real key cannot be determined

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