Method and system for securely downloading computer data to mobile terminal
A mobile terminal and data security technology, which is applied to security devices, transmission systems, and key distribution, can solve problems such as illegal rewriting, and achieve the effect of preventing network lock, card lock function, and data protection function.
Active Publication Date: 2011-05-11
南通炜星机械有限公司
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Problems solved by technology
However, these disclosed technologies still have the following deficiencies: 1. The mobile terminal only encrypts the key data downloaded, and does not encrypt all the downloaded data, so there is still the possibility that the data of the mobile terminal will be rewritten; 2. It can effectively and illegally rewrite legal data. The data to be downloaded in the computer, and then downloaded to the mobile terminal
Therefore, the above-mentioned deficiency still gives some personnel or organizations the opportunity to crack the mobile terminal lock network lock card
Method used
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[0033] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0034] For the convenience of illustration, some constants are defined here:
[0035] The public key of the mobile terminal manufacturer is set to (d, n);
[0036] The private key of the mobile terminal manufacturer is set to (e, n);
[0037] The mobile terminal manufacturer's key is set to key;
[0038] The plain text of the mobile terminal manufacturer's key is set to m_key;
[0039] The mobile terminal manufacturer key ciphertext is set to s_key;
[0040] Data plaintext is set to m_data;
[0041] The data ciphertext is set to s_data.
[0042] Before downloading computer data to a mobile terminal safely, do the following prerequisite work first:
[0043] The mobile terminal manufacturer encrypts the mobile terminal manufacturer key key with the mobile terminal manufacturer private key (e, n) to obtain the mobile terminal manufacturer...
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The invention discloses a method for securely downloading computer data to a mobile terminal, which comprises that: the mobile terminal transmits a downloading request to a computer, and decrypts a pre-stored mobile terminal manufacturer key cipher text by using a pre-stored mobile terminal manufacturer public key to obtain a mobile terminal manufacturer key plaintext; after receiving the downloading request, the computer transmits a pre-stored data cipher text to the mobile terminal; and the mobile terminal decrypts the received data cipher text by using the mobile terminal manufacturer key plaintext to obtain a data plaintext, and stores the data plaintext. The invention also discloses a system for securely downloading the computer data to the mobile terminal. The method and the system provided by the invention can prevent a network and card locking function of the mobile terminal from being cracked by utilizing a downloading channel.
Description
technical field [0001] The invention relates to encryption technology, in particular to a method and system for safely downloading computer data to a mobile terminal. Background technique [0002] With the maturity and development of electronic technology, mobile terminals (also known as mobile phones) are becoming more and more popular, which brings great convenience to people's lives, and mobile terminals meet the fast-paced and high-efficiency social needs, so they are popular Users welcome. In order to better develop customers, some mobile operators sometimes sell mobile terminals to customers at a price lower than the cost, or even give them to customers for free. At the same time, mobile operators require such mobile terminals to be locked to the network of the mobile operator, or to lock the Subscriber Identity Module (SIM) card of the mobile operator, so-called network lock card. However, there are some people or organizations in the market. Driven by profit, they ...
Claims
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IPC IPC(8): H04W12/02H04L29/06
CPCH04L9/08H04L2209/80H04W12/04H04W12/35
Inventor 李春雨
Owner 南通炜星机械有限公司