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US 2001/0041593 A1Published application
Mobile communication device and data concealing method
AssigneeNEC Corporation
InventorHideaki Asada
Life of this patent
Estimating the term…
Abstract
A mobile communication device allowing data to be stored and programs to be delivered with safety is disclosed. The mobile communication device is detachably connected to a card having at least an encryption key generator therein. The encryption key generator generates an encryption key using a predetermined code. Encryption of data to be stored in the memory and decryption of encrypted data stored in the memory are performed using the encryption key received from the card.
Claims20
A mobile communication device comprising:
- a memory;
- a card interface to a card having at least an encryption key generator therein, wherein the encryption key generator generates an encryption key using a predetermined code;
- and
- a processor performing encryption of data to be stored into the memory and decryption of encrypted data stored in the memory, using the encryption key received from the card.
1 more element
A data concealing method in a mobile communication device comprising:
- a memory;
- and
- a card interface to a card having an IC (integrated circuit) chip therein,
- the method comprising the steps of:
- instructing the card to generate an encryption key using a predetermined code that is previously stored in the card;
- and
- performing encryption of data to be stored in the memory and decryption of encrypted data stored in the memory, using the encryption key received from the card.
4 more elements
Dependencies are inferred from the claim text.