| 摘要 |
<p>A security device connected to a host device which includes a processor performing a scramble operation and a storage unit, the security device comprising: a storage unit in which the first authentication code is stored; a random number generation unit; an encryption unit; and a controller which performs a scramble operation, wherein the controller generates a first scramble key by performing the scramble operation on the random number and the first authentication code and transmits the first scramble key to the host device, and the controller receives, from the host device, scramble data generated by performing the scramble operation on encryption target data according to the random number, generates the encryption target data by performing the scramble operation on the scramble data and the random number, generates encryption data, and transmits the encrypted data to the host device.</p> |
