A secure interaction method and device based on information transmission
An information transmission and interaction method technology, applied in the field of information transmission-based security interaction methods and devices, can solve problems such as illegal attack security risks, and achieve the effects of ensuring security protection capabilities, less dependence, and solving security risks
Active Publication Date: 2022-03-11
NAT COMP NETWORK & INFORMATION SECURITY MANAGEMENT CENT
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Problems solved by technology
There are certain security risks in illegal attacks
Method used
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[0047] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0048] The present invention provides a safe interaction method based on information transmission, such as figure 1 shown, including:
[0049] S1 After the receiving end completes the two-way identity authentication with the sending end, it obtains the transmission ciphertext from the sending end;
[0050] S2 determines the secondary obfuscation character position in the transmission ciphertext based on the number of characters in the transmission ciphertext after deleting the first and last characters;
[0051] S3 decrypts the transmission ciphertext with the first character, the last character and the secondary obfuscated character deleted, and obtains the primary decrypted ciphertext;
[0052] S4 Determine the position of the primary obfuscation character in the primary decryption ciphertext based on the character length of...
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The present invention provides a secure interaction method and device based on information transmission, which includes obtaining transmission cipher text from the sending end after the receiving end completes two-way identity authentication with the sending end; number to determine the position of the secondary obfuscation character in the transmission ciphertext; decrypt the transmission ciphertext with the first character, the last character and the secondary obfuscation character deleted to obtain the primary decryption ciphertext; based on the character length of the primary decryption ciphertext, determine the primary The position of an obfuscated character in the decrypted ciphertext; based on the position of an obfuscated character, the original text before encryption at the sender is obtained. This scheme makes up for the defect that the confidentiality and integrity of information transmission cannot be guaranteed, improves the security protection level of vertical communication between encryption and decryption terminals, and solves the security risk of attacks at the same time.
Description
technical field [0001] The present invention relates to a decryption method and device, in particular to a method and device for safe interaction based on information transmission. Background technique [0002] The current transmission between systems is mainly through http and https transmission. When transmitting sensitive information, such as authentication information, passwords, phone numbers, personal identity information, personal property information, etc., the following methods are usually used: [0003] Clear text transmission without any action; [0004] Use irreversible encryption algorithm to encrypt transmission; [0005] The transmission is encrypted using a common reversible encryption algorithm. [0006] The limitations of the above three methods are as follows: [0007] Plain text transmission: without any protection, the security is poor, the attack cost is too low for the attacker, the information security is poor, and it is very easy to cause the leak...
Claims
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IPC IPC(8): H04L9/40
CPCH04L63/0428H04L63/0869
Inventor 杨鹏
Owner NAT COMP NETWORK & INFORMATION SECURITY MANAGEMENT CENT