Microcomputer bit addition verifying coded lock

Abstract

A microcomputer bit addition verifying coded lock comprises the verifying process that a code M with a certain length is set; the code M is segmented: N1, N2, N3, N4...... Ni are set as the lengths of code segments, and meanwhile N1 & lt; N2 & lt; N3 & lt; N4...... & lt; Ni; the code segments at the first bit to the N1th bit of the code are named as M1, the code segments at the first bit to the N2th bit of the code are named as M2, the code segments at the first bit to the N3th bit of the code are named as M3,...... the code segments at the first bit to the Nith bit of the code are named as Mi; the code M1 is input during authentication, the authentication is passed if the input code is correct, if not, the code M2 is input, the authentication is passed if the input code M2 is correct, if not, the code M3 is input,...... till the final code segment Mi is input. The probability of mistakenly inputting code bit addition of a code possessor is very low for short codes, and the probability of mistakenly inputting code bit addition of a codebreaker is very high for long codes.

Description

technical field [0001] The invention relates to a microcomputer combination lock, in particular to a microcomputer upgrade verification combination lock. Background technique [0002] In the existing microcomputer password lock, once the user password is set, the password bits are fixed during the identity verification process, so the limited password bits cannot withstand exhaustive deciphering, and the security is poor. In order to ensure safety, the security of user passwords is now guaranteed by limiting the number of wrong passwords and depriving operation rights of entering wrong passwords beyond the limited number of times. Therefore, there is a contradiction that cannot be unified in the traditional microcomputer password lock, and the user is faced with a dilemma when setting the password: from a security point of view, the longer the password, the higher the security level; but the long password is difficult to remember, cumbersome to operate, and easy to enter mis...

AI Technical Summary

Problems solved by technology

Therefore, there is a contradiction that cannot be unified in the traditional microcomputer password lock, and the user is faced with a dilemma when setting the password: from a security point of view, the longer the password, the higher the security level; but the long password is difficult to remember, cumbersome to operate, and easy to enter mistakes ; From the perspective of user convenience, the shorter the password, the easier it is to remember and the more convenient the operation, but the shorter the password, the worse the security

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