Apparatus and method for storing data
First Claim
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1. An apparatus for storing data in a device, the apparatus comprising:
- a directory key generator generating a directory key required for encrypting and decrypting the data by inputting a device-specific key to a key generating function, the device-specific key being unique information allocated to the device and stored in a secure region of the device, wherein the data is stored in at least one directory, and the directory key is used in encrypting and decrypting the data in units of directories.
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Abstract
Provided are an apparatus and method for storing data. The apparatus includes a directory key generator generating a directory key required for encrypting and decrypting the data by inputting a device-specific key to a key generating function, the device-specific key being unique information allocated to the device and stored in a secure region of the device. The data is stored in at least one directory, and the directory key is used in encrypting and decrypting the data in units of directories. Accordingly, it is possible to minimize consumption of resources required to encrypt and decrypt the data.
12 Citations
23 Claims
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1. An apparatus for storing data in a device, the apparatus comprising:
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a directory key generator generating a directory key required for encrypting and decrypting the data by inputting a device-specific key to a key generating function, the device-specific key being unique information allocated to the device and stored in a secure region of the device, wherein the data is stored in at least one directory, and the directory key is used in encrypting and decrypting the data in units of directories. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of storing data in a device, comprising:
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generating a directory key by inputting a device-specific key into a key generating function, the directory key used to encrypt and decrypt the data, the device-specific key allocated to the device and stored in a secure region of the device, wherein the data is stored in at least one directory, and the directory key is used to encrypt and decrypt the data in units of directories. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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13. The method of clam 12, further comprising:
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generating encrypted data by encrypting the data using the directory key; and
storing the encrypted data in units of directories.
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Specification