APPARATUS FOR LOW POWER SHA-1 HASH OPERATION AND APPARATUS FOR LOW POWER HMAC CRYPTOGRAPHIC USING THIS

摘要

It is identical to be arranged to protect the device for a low-power SHA-1 Hash operations of user privacy and the device for low-power HMAC (keyed Hash message authentication code) password usage in wired/wireless data configuration; such as a moveable trust computing, a RFID (Radio Frequency IDentification), a wireless sensor network, a local network etc.. The paddling process that one keyboard unit (230) executes key data is calculated for HMAC, and an XOR accounting units (233) carry out the exclusive-OR function of the key data for having liner and filling harmonic tone. One data connection unit (240) united text, to encrypt to the XOR data calculated and a data pad unit (250) paddling process for executing united data. One SHA-1 Hash calculations unit (270) supports the SHA-1 Hash calculations for having the data of liner. Data selection unit is SHA-1 Hash calculations or text as a result, to encrypt and shift result or text to data connection unit. One controller (260) reads operation of the data to the operation for executing encryption and control data connection unit and data pad unit is necessary.