A microSD card with both communication and storage functions and its encryption method
A technology with storage function and communication function, which is applied in the MicroSD card with both communication and storage functions and its encryption field, can solve the problems of low security, no communication, increased cost, etc., achieve high security, eliminate low security, cost-saving effect
Inactive Publication Date: 2021-01-15
POTEVIO INFORMATION TECH CO LTD
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- Description
- Claims
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Problems solved by technology
[0003] In the prior art, most of the Micro SD cards only have the function of storage and do not have the function of communication (SIM card). Android smart phones on the market cannot simultaneously realize the functions of dual card dual standby and expansion of storage space.
[0004] Moreover, in the prior art, when the storage function of the Micro SD card is encrypted, the stored data is encrypted by the host computer. The security of this encryption method is low, and it is difficult to guarantee the security of the stored data.
[0005] In the prior art, the stored data is also encrypted through the hard-core controller, but this method increases the cost
Method used
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[0045] In order to have a clearer understanding of the technical features, purpose and effects of the technical solutions claimed in the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings, and the same symbols in each figure represent the same parts.
[0046] For the sake of brevity in the drawings, each drawing only schematically shows the relevant parts of the present invention, and does not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, only one of the components having the same structure or function is schematically drawn, or only one of them is marked.
[0047] The core of the present invention is to provide a Micro SD card with both communication and storage functions. The Micro SD card has a memory chip 20, a SIM chip 30 and an SD controller chip 40, and can utilize the key pair of the SIM chip ...
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The invention provides a MicroSD card with communication and storage functions and an encryption method thereof. The MicroSD card includes a substrate, a memory chip packaged on the substrate for storing data; a SIM chip is packaged on the substrate, and is used for communicating with an external device electrically and encrypting the data stored in the memory chip. An SD controller chip packagedon the substrate and electrically connected with the memory chip and the SIM chip for electrically connecting with an external device and controlling the memory chip to store encrypted data. The memory chip, the SIM chip and the SD control chip form an integrated Micro SD card with the substrate. The Micro SD card with the structure integrates the communication and storage functions, and encryptsthe data to be stored in the memory chip by the key of the SIM chip, which is high in security and low in cost.
Description
technical field [0001] The invention relates to the technical fields of mobile communication and Micro SD, in particular to a Micro SD card with both communication and storage functions and an encryption method thereof. Background technique [0002] Micro SD card is a tiny flash memory card, which is small in size and suitable for mobile phones and tablet computers. [0003] In the prior art, most Micro SD cards only have the function of storage and do not have the function of communication (SIM card). Android smart phones on the market cannot simultaneously realize the functions of dual card dual standby and expansion of storage space. [0004] Moreover, in the prior art, when the storage function of the Micro SD card is encrypted, the stored data is encrypted by the host computer. The security of this encryption method is low, and it is difficult to guarantee the security of the stored data. [0005] In the prior art, the stored data is also encrypted through the hard-cor...
Claims
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IPC IPC(8): G06F21/60G06F21/79
CPCG06F21/602G06F21/79
Inventor 王国辉赵旭鑫张海英孙留强
Owner POTEVIO INFORMATION TECH CO LTD