DEVICE AND A METHOD FOR ENCRYPTING A NUMBER KEY USING A LONG/SHORT INPUT MAINTAINING A SECURITY LEVEL BY EASILY MEMORIZING A CRYPTOGRAPHIC KEY

摘要

PURPOSE: A device and a method for encrypting a number key are provided to maintain a high security level by increasing the case number of a password corresponding to the number of digits.;CONSTITUTION: A key input unit(10) receives a key input as an electric signal by operating the key of keypad. A counter unit(20) counts an input time. The counter unit tabulates the key input according to an input sequence. An encoder unit(30) encrypts a password by inserting a variable length flag in order to safely store a password. The encoding unit stores the encrypted password in a password table. A decoding unit(40) decodes a value saved in the password table. A micom unit(50) assigns a control signal to each instrument. The micom unit stores the encrypted password in the password table. The micom part initializes a system.;COPYRIGHT KIPO 2010