One selective method and the corresponding device of the many data set which is registered to the device

摘要

The many data set the method selecting the one of DS1enc which is registered to device DEV or DSnenc is offered. Each data set DS1enc or DSnenc relation is attached in key K1 of specification or Kn. At device DEV information R of exchange it is encoded key making use of one key Kx of K1 or Kn. Information Renc of the exchange which is encoded is transmitted by remote device RD, is deciphered making use of the key Krd which is housed in remote device RD. Information Rrd of the exchange which is deciphered is sent back to device DEV. Consequently, information Rrd of the exchange where information R of exchange is deciphered it is compared. When two is equal, appropriate data set DSx is discovered, when it differs, cycle reopens making use of another key. Role of device DEV and remote device RD may be modified, in order cycle at remote device RD to be started. In addition as for this invention it regards the device which gives one of the many data sets which are registered to the device to the remote device.