A Method for Handling Crypto-Algorithm and a Crypto-Module, Supporting Polymorphism and Tamper-proof

摘要

The present invention is the encryption processing to prevent access and maintain security in the data communication operation and unlicensed A method and relates to a cryptographic module, a) when the password encryption processing module is configured to be initialized, including the processing engine with a variable resistor, if the check of step is that the variable value in the backup memory coupled to the variable resistor exists; b) wherein a) when the value of the variable is present in the backup memory in the step, the step of storing the variable values of the backup memory to the variable resistor; step c) is initialized to the encryption processing algorithm is changing the characteristic, the cryptographic processing module is activated in accordance with the characteristic changes in accordance with the ciphering algorithm, the variable value stored in the variable resistor; d) when the power off to the physical removal or by the backup memory, and a variable resistor connected to the tamper protection circuit is activated, the step of deleting the variable value stored in the backup memory and a variable resistor with respect to the encryption processing module; Characterized in that said. ; According to the present invention, polymorphisms, and by supporting the anti-tamper function, preventing the exposure of the encryption algorithm, which may be caused by theft or loss of the encryption module, developed by CONFIDENTIAL and inherently has the effect of blocking the possibility of data hacking.