Apparatus and method for performing encryption and decryption of data in portable terminal

摘要

An apparatus and a method for performing encryption or decryption of data in a portable terminal, which performs an encryption or decryption operation from a point where the encryption or decryption operation is not generated when power is turned off and then turned on during the encryption or decryption operation, are provided. The apparatus includes a file system analyzer for extracting information of a data block, in which actual user data is stored, through metadata of a file system, and generating a data block list, and a journaling manager for storing a data block corresponding to the data block list among data blocks stored in a memory in a journaling storage unit, and deleting the data block stored in the journaling storage unit when an encryption or decryption operation for the data block stored in the journaling storage unit is completed.

主权项

1. An apparatus for performing encryption or decryption of data in a portable terminal, the apparatus comprising:
a file system analyzer configured to extract information of a data block, in which actual user data is stored, through metadata of a file system, and to generate a data block list including the information of the data block extracted; and a journaling manager configured to extract a data block corresponding to the data block list from a memory, to store the data block extracted from the memory in a journaling storage unit in the unit of a journaling size, the unit of the journaling size corresponding to a size of the journaling storage unit, and to delete the data block stored in the journaling storage unit when an encryption or decryption operation for the data block stored in the journaling storage unit is completed.