CN103945047A

CN103945047A - Data secrecy method of security mobile phone

Info

Publication number: CN103945047A
Application number: CN201310024263.1A
Authority: CN
Inventors: 董德福; 杨义斌
Original assignee: China Techfaith Wireless Communication Technology Ltd
Current assignee: China Techfaith Wireless Communication Technology Ltd
Priority date: 2013-01-23
Filing date: 2013-01-23
Publication date: 2014-07-23

Abstract

The invention provides a data secrecy method of a security mobile phone. The method comprises: all data of the security mobile phone is encrypted during storage and becomes ciphertexts which cannot be directly identified; different secret keys are used every time for data writing; and during data reading, successful decryption can be carried out only by use of the correct secret keys and correct decryption algorithms, and otherwise, the content of read data cannot be identified.

Description

The data encryption method of safe mobile phone

Technical field

The present invention is about the data encryption method of safe mobile phone, the safe mobile phone terminal equipment of the data that particularly need protection.

Background technology

Mobile phone has become requisite electronic equipment in people's daily life, and people get used to conventional data to exist in mobile phone and carry, such as telephone directory, working document, photo, video etc.But there is now a lot of application programs, can steal the data that are stored on mobile phone; Also the people who has some to have an ulterior motive, may walk the data Replica on others' mobile phone.The data security of mobile phone and user's individual privacy in these behaviors all serious threat.But these taking and carring aways are again unavoidable.Therefore, need a kind of special method to protect user's data, even if these data have been stolen by others, the other side is these data of None-identified also, can not cause any threat to the people of loss of data.

Safe mobile phone in the present invention just provides the method for this data confidentiality, all data of safe mobile phone when preserving all through encrypting, become can not Direct Recognition ciphertext; Write data at every turn and can use different keys; During reading out data, must use and encrypt identical key and decipherment algorithm and could successfully be decrypted, otherwise with regard to the content of None-identified data streams read.Because encrypt key used, only have the owner oneself of mobile phone to know, even if the data on safe mobile phone have been stolen by others, the other side also cannot steal key, so also just cannot decipher the content of these data.

Summary of the invention

The object of this invention is to provide a kind of on safe mobile phone the method for data confidentiality, even if the data on safe mobile phone have been stolen by others, the other side also cannot decipher these data.

For realizing above goal of the invention, in the safe mobile phone in the present invention all data when preserving all through encrypting, become can not Direct Recognition ciphertext; Write data at every turn and can use different keys; During reading out data, must use and encrypt identical key and decipherment algorithm and could successfully be decrypted, otherwise with regard to the content of None-identified data streams read.Because encrypt key used, only have the owner oneself of mobile phone to know, even if the data on safe mobile phone have been stolen by others, the other side also cannot steal key, so also just cannot decipher the content of these data.

For realizing above goal of the invention, during the each save data of safe mobile phone, all can point out user that key is set, if user does not arrange key, with the key of system default, be encrypted, thereby guarantee that the data that write are all through encrypting; In the time of read data, there is no default key, necessarily require user to input key, if do not input the wrong cipher key of key or input, the data of reading cannot be decrypted.

Accompanying drawing explanation

Fig. 1 is the flow process that the present invention writes data.

Fig. 2 is the flow process of read data of the present invention.

Embodiment

For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with execution mode and accompanying drawing, the present invention is described in further details.At this, exemplary embodiment of the present invention and explanation thereof are used for explaining the present invention, but not as a limitation of the invention.

In the safe mobile phone of mentioning in the present invention, have encrypting module and deciphering module, the data of using encrypting module and key A to be encrypted, must be used deciphering module and key A just can be decrypted; If used the key B different with key A, cannot be decrypted.In safe mobile phone all data when preserving all through encrypting, become can not Direct Recognition ciphertext; Write data at every turn and can use different keys; During reading out data, must use and encrypt identical key and decipherment algorithm and could successfully be decrypted, otherwise with regard to the content of None-identified data streams read.During the each save data of safe mobile phone, all can point out user that key is set, if user does not arrange key, with the key of system default, be encrypted, thereby guarantee that the data that write are all through encrypting; In the time of read data, there is no default key, necessarily require user to input key, if do not input the wrong cipher key of key or input, the data of reading cannot be decrypted.

Fig. 1 is the flow chart of writing data.While writing data, be first ready to the data that will write, then point out user that key is set; If user is provided with key A, encrypting module utilizes key A to be encrypted data, generates the encrypt data after encrypting; Finally encrypt data is write and close file.If user does not arrange key, encrypting module is encrypted data with the key B of system default, generates the encrypt data after encrypting; Finally encrypt data is write and close file.

Fig. 2 is the flow chart of read data.During read data, first reading out data from file, encrypts during these data, can not Direct Recognition; Then point out user to input key; If user has inputted key A, deciphering module is used key A to be decrypted; If key A is correct, just can successfully decrypt correct data; If key A is incorrect, cannot be decrypted, the data that read are None-identified all.If not input of user, cannot be decrypted equally when prompting user inputs key, the data that read are None-identified also.

Above-described embodiment; object of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only the specific embodiment of the present invention; the protection range being not intended to limit the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims

1. the data encryption method of safe mobile phone, is characterized in that, described method comprises:

All data of safe mobile phone when preserving all through encrypting;

Write data at every turn and can use different keys;

During reading out data, must use correct key and decipherment algorithm to be successfully decrypted.

2. according to claim 1, it is characterized in that, described method also comprises:

While writing data, point out user that key is set;

If user does not arrange key, with the key of system default, be encrypted, thereby guarantee that the data that write are all through encrypting;

In the time of read data, necessarily require user to input key;

If do not input key, the data of reading cannot be decrypted.