CN105356998A - TrustZone-based domain space switching system and method - Google Patents
TrustZone-based domain space switching system and method Download PDFInfo
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- CN105356998A CN105356998A CN201510628574.8A CN201510628574A CN105356998A CN 105356998 A CN105356998 A CN 105356998A CN 201510628574 A CN201510628574 A CN 201510628574A CN 105356998 A CN105356998 A CN 105356998A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Storage Device Security (AREA)
Abstract
The invention discloses a TrustZone-based domain space switching system and method. The system comprises a switching request acquisition module, an extraction instruction generation module, a TrustZone and a domain space switcher, wherein the switching request acquisition module is used for acquiring a corresponding switching request instruction when a first domain space in a multi-domain space needs to be switched to a second domain space; the extraction instruction generation module is used for generating a key extraction instruction according to the switching request instruction; the TrustZone is used for storing switching keys; and the domain space switcher is used for extracting a switching key corresponding to switching to the second domain space from the TrustZone under the control of the key extraction instruction, and finishing a corresponding switching operation by using the switching key. The switching keys for switching the domain spaces are stored in the TrustZone, and data saved inside the TrustZone is difficult to steal from the outside since the TrustZone is constructed with a strict security mechanism, thereby enhancing the security of the switching keys.
Description
Technical field
The present invention relates to field of information security technology, particularly a kind of domain space switched system based on TrustZone and method.
Background technology
Along with informationalized development, intelligent mobile terminal obtains applying more and more widely.In order to improve the managerial ability of intelligent mobile terminal to data message, by arranging multiple domain space on an intelligent mobile terminal, to utilize different domain spaces, different user data can be managed now.
But when carrying out handover operation to domain spaces different on intelligent mobile terminal, required handover key is kept in file system, as being kept on the subregion such as data subregion or persist subregion of Android.Because the fail safe of these subregions in protected data is poor, thus cause the handover key be kept on these subregions to be easy to be stolen by other people, and then the fail safe of user-space messages cannot be ensured.
Can find out in sum how to improve the fail safe of handover key, thus the fail safe improving user-space messages is current problem demanding prompt solution.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of domain space switched system based on TrustZone and method, improve the fail safe of handover key, thus improve the fail safe of user-space messages.Its concrete scheme is as follows:
Based on a domain space switched system of TrustZone, be applied to the multiple domain space of intelligent mobile terminal, described multiple domain space comprises at least two domain spaces; Described system comprises:
Handover request acquisition module, for when the first domain space in described multiple domain space needs to switch to the second domain space, obtains corresponding handover request instruction;
Extracting directive generation module, for obtaining the described handover request instruction that described handover request acquisition module sends, and according to described handover request instruction, generating cipher key-extraction instruction;
TrustZone, for bank switching key;
Domain space switch, for obtaining described cipher key-extraction instruction, under the control of described cipher key-extraction instruction, extraction and handover key corresponding when switching to described second domain space from described TrustZone; And utilize this handover key to complete the handover operation switching to described second domain space from described first domain space.
Preferably, described system also comprises:
Raw information acquisition module, for obtaining raw information;
Key production module, for obtaining the described raw information that described raw information acquisition module sends, and utilize key schedule, described raw information is processed, obtain handover key, and this handover key is sent to described TrustZone, to utilize described TrustZone, this handover key is stored.
Preferably, described raw information acquisition module is fingerprint feature information detecting module, iris feature information detection module, face feature information detection module, sound characteristic information detection module, palm print characteristics information detection module or keyboard.
Preferably, described raw information acquisition module is domain space ID extraction module;
Described domain space ID extraction module, for extracting the ID of domain space, and using the ID of domain space as raw information.
Preferably, described system, also comprises:
Data transmission channel, for connecting described TrustZone and described domain space switch, when described domain space switch needs to extract handover key from described TrustZone, transfers to described domain space switch by this handover key;
Channel data encrypting module, for being encrypted transmission to the data transmitted in described data transmission channel.
The invention also discloses a kind of domain space changing method based on TrustZone, be applied to the multiple domain space of intelligent mobile terminal, described multiple domain space comprises at least two domain spaces; Described method comprises:
When the first domain space in described multiple domain space needs to switch to the second domain space, obtain corresponding handover request instruction;
According to described handover request instruction, generate cipher key-extraction instruction;
Under the control of described cipher key-extraction instruction, extract that prestore with handover key corresponding when switching to described second domain space from TrustZone; And utilize this handover key to complete the handover operation switching to described second domain space from described first domain space.
Preferably, described method also comprises:
Obtain raw information, and utilize key schedule, described raw information is processed, obtains handover key, and this handover key is sent to described TrustZone, to utilize described TrustZone, this handover key is stored.
Preferably, the process of described acquisition raw information comprises: obtain the fingerprint feature information of user, iris feature information, face feature information, sound characteristic information, palm print characteristics information or the character string information by input through keyboard.
Preferably, the process of described acquisition raw information comprises: the ID extracting domain space, and using the ID of domain space as described raw information.
Preferably, described method, also comprises:
When described domain space switch needs to extract handover key from described TrustZone, by data transmission channel, this handover key is transferred to described domain space switch;
Transmission is encrypted to the data transmitted in described data transmission channel.
In the present invention, domain space switched system comprises handover request acquisition module, extracts directive generation module, TrustZone and domain space switch.Wherein, handover request acquisition module is used for when the first domain space in multiple domain space needs to switch to the second domain space, obtains corresponding handover request instruction; Extract directive generation module and according to handover request instruction, cipher key-extraction instruction can be generated; TrustZone is then for bank switching key; Domain space switch then can under the control of cipher key-extraction instruction, extraction and handover key corresponding when switching to the second domain space from TrustZone; And utilize this handover key to complete the handover operation switching to the second domain space from the first domain space.As can be seen here, the present invention utilizes the handover key of TrustZone storage for switching domain space, and because TrustZone self adopts strict security mechanism to build, its inner data of preserving are difficult to be stolen by the external world.Handover key is stored on TrustZone by the present invention, and when needs utilize handover key to switch domain space, extracts relevant handover key just can by domain space switch from TrustZone.Visible, the present invention, under the prerequisite of handoff procedure ensureing not domain of influence space, improves the fail safe of handover key, thus improves the fail safe of user-space messages.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
Fig. 1 is a kind of domain space switched system application structure schematic diagram based on TrustZone disclosed in the embodiment of the present invention;
Fig. 2 is a kind of domain space switched system application structure schematic diagram based on TrustZone specifically disclosed in the embodiment of the present invention;
Fig. 3 is a kind of domain space changing method flow chart based on TrustZone disclosed in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the invention discloses a kind of domain space switched system based on TrustZone, be applied to the multiple domain space of intelligent mobile terminal, multiple domain space comprises at least two domain spaces; Shown in Figure 1, this system comprises:
Handover request acquisition module 11, for when the first domain space in multiple domain space needs to switch to the second domain space, obtains corresponding handover request instruction;
Extracting directive generation module 12, for obtaining the handover request instruction that handover request acquisition module 11 sends, and according to handover request instruction, generating cipher key-extraction instruction;
TrustZone13, for bank switching key;
Domain space switch 14, for obtaining cipher key-extraction instruction, under the control of cipher key-extraction instruction, extraction and handover key corresponding when switching to the second domain space from TrustZone13; And utilize this handover key to complete the handover operation switching to the second domain space from the first domain space.
It should be noted that, TrustZone is a kind of framework for promoting consumer-elcetronics devices Information Security, builds based on strict security mechanism, has high fail safe.
In addition, when switching to different domain spaces in the present embodiment, required handover key can be different, certainly according to the actual needs, also can adopt identical handover key.
In the embodiment of the present invention, domain space switched system comprises handover request acquisition module, extracts directive generation module, TrustZone and domain space switch.Wherein, handover request acquisition module is used for when the first domain space in multiple domain space needs to switch to the second domain space, obtains corresponding handover request instruction; Extract directive generation module and according to handover request instruction, cipher key-extraction instruction can be generated; TrustZone is then for bank switching key; Domain space switch then can under the control of cipher key-extraction instruction, extraction and handover key corresponding when switching to the second domain space from TrustZone; And utilize this handover key to complete the handover operation switching to the second domain space from the first domain space.
As can be seen here, the embodiment of the present invention utilizes the handover key of TrustZone storage for switching domain space, and because TrustZone self adopts strict security mechanism to build, its inner data of preserving are difficult to be stolen by the external world.Handover key is stored on TrustZone by the embodiment of the present invention, and when needs utilize handover key to switch domain space, extracts relevant handover key just can by domain space switch from TrustZone.Visible, the embodiment of the present invention, under the prerequisite of handoff procedure ensureing not domain of influence space, improves the fail safe of handover key, thus improves the fail safe of user-space messages.
The invention discloses a kind of domain space switched system based on TrustZone specifically, shown in Figure 2, relative to a upper embodiment, the embodiment of the present invention expands further instruction and optimization to technical scheme.Specific as follows:
In the present embodiment, system can also comprise raw information acquisition module 15 and key production module 16.Wherein,
Raw information acquisition module 15 can be used for obtaining raw information; Key production module 16 can be used for the raw information obtaining the transmission of raw information acquisition module 15, and utilize key schedule, raw information is processed, obtains handover key, and this handover key is sent to TrustZone13, to utilize TrustZone13, this handover key is stored.Wherein, existing common key schedule can be utilized to process raw information, concrete key schedule is not limited at this.
Concrete, above-mentioned raw information acquisition module 15 can be fingerprint feature information detecting module, iris feature information detection module, face feature information detection module, sound characteristic information detection module, palm print characteristics information detection module or keyboard.Wherein, keyboard is for inputting corresponding character string information as raw information.
Certainly, above-mentioned raw information acquisition module 15 can also be domain space ID extraction module, specifically for extracting the ID of domain space, and using the ID of domain space as raw information.
The system of the present embodiment also comprises data transmission channel 17, and to transfer to the fail safe of data the process of domain space switch 14 from TrustZone13 in order to promote handover key, the system of the present embodiment can also comprise channel data encrypting module 18, wherein,
Data transmission channel 17 can be used for connecting TrustZone13 and domain space switch 14, when domain space switch 14 needs to extract handover key from TrustZone13, this handover key is transferred to domain space switch 14; Channel data encrypting module 18 then for being encrypted transmission to the data of transmission in data transmission channel 17, thus further increases the difficulty stealing handover key.
The embodiment of the invention also discloses a kind of domain space changing method based on TrustZone, be applied to the multiple domain space of intelligent mobile terminal, multiple domain space comprises at least two domain spaces; Shown in Figure 3, the method comprises:
Step S301: when the first domain space in multiple domain space needs to switch to the second domain space, obtain corresponding handover request instruction;
Step S302: according to handover request instruction, generates cipher key-extraction instruction;
Step S303: under the control of cipher key-extraction instruction, extracts that prestore with handover key corresponding when switching to the second domain space from TrustZone;
Step S304: utilize this handover key to complete the handover operation switching to the second domain space from the first domain space.
Method in the present embodiment can also comprise: obtain raw information, and utilize key schedule, process, obtain handover key, and this handover key is sent to TrustZone, store to utilize TrustZone to this handover key raw information.Wherein, existing common key schedule can be utilized to process raw information, concrete key schedule is not limited at this.
Concrete, the process obtaining raw information can be: obtain the fingerprint feature information of user, iris feature information, face feature information, sound characteristic information, palm print characteristics information or the character string information by input through keyboard.
Certainly, the process obtaining raw information can also be: the ID extracting domain space, and using the ID of domain space as raw information.
To transfer to the fail safe of data the process of domain space switch from TrustZone in order to promote handover key, method in the present embodiment can also comprise: when domain space switch needs extract handover key from TrustZone, by data transmission channel, this handover key is transferred to domain space switch; Transmission is encrypted to the data transmitted in data transmission channel, thus further increases the difficulty stealing handover key.
In the embodiment of the present invention, domain space changing method comprises, and when the first domain space in multiple domain space needs to switch to the second domain space, obtains corresponding handover request instruction; Then according to handover request instruction, cipher key-extraction instruction is generated; Under the control of cipher key-extraction instruction, extraction and handover key corresponding when switching to the second domain space from TrustZone; And utilize this handover key to complete the handover operation switching to the second domain space from the first domain space.
As can be seen here, the embodiment of the present invention utilizes the handover key of TrustZone storage for switching domain space, and because TrustZone self adopts strict security mechanism to build, its inner data of preserving are difficult to be stolen by the external world.Handover key is stored on TrustZone by the embodiment of the present invention, and when needs utilize handover key to switch domain space, extracts relevant handover key just can by domain space switch from TrustZone.Visible, the embodiment of the present invention, under the prerequisite of handoff procedure ensureing not domain of influence space, improves the fail safe of handover key, thus improves the fail safe of user-space messages.
Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
Above a kind of domain space switched system based on TrustZone provided by the present invention and method are described in detail, apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. based on a domain space switched system of TrustZone, it is characterized in that, be applied to the multiple domain space of intelligent mobile terminal, described multiple domain space comprises at least two domain spaces; Described system comprises:
Handover request acquisition module, for when the first domain space in described multiple domain space needs to switch to the second domain space, obtains corresponding handover request instruction;
Extracting directive generation module, for obtaining the described handover request instruction that described handover request acquisition module sends, and according to described handover request instruction, generating cipher key-extraction instruction;
TrustZone, for bank switching key;
Domain space switch, for obtaining described cipher key-extraction instruction, under the control of described cipher key-extraction instruction, extraction and handover key corresponding when switching to described second domain space from described TrustZone; And utilize this handover key to complete the handover operation switching to described second domain space from described first domain space.
2. the domain space switched system based on TrustZone according to claim 1, is characterized in that, also comprise:
Raw information acquisition module, for obtaining raw information;
Key production module, for obtaining the described raw information that described raw information acquisition module sends, and utilize key schedule, described raw information is processed, obtain handover key, and this handover key is sent to described TrustZone, to utilize described TrustZone, this handover key is stored.
3. the domain space switched system based on TrustZone according to claim 2, it is characterized in that, described raw information acquisition module is fingerprint feature information detecting module, iris feature information detection module, face feature information detection module, sound characteristic information detection module, palm print characteristics information detection module or keyboard.
4. the domain space switched system based on TrustZone according to claim 2, is characterized in that, described raw information acquisition module is domain space ID extraction module;
Described domain space ID extraction module, for extracting the ID of domain space, and using the ID of domain space as raw information.
5. the domain space switched system based on TrustZone according to any one of Claims 1-4, is characterized in that, also comprise:
Data transmission channel, for connecting described TrustZone and described domain space switch, when described domain space switch needs to extract handover key from described TrustZone, transfers to described domain space switch by this handover key;
Channel data encrypting module, for being encrypted transmission to the data transmitted in described data transmission channel.
6. based on a domain space changing method of TrustZone, it is characterized in that, be applied to the multiple domain space of intelligent mobile terminal, described multiple domain space comprises at least two domain spaces; Described method comprises:
When the first domain space in described multiple domain space needs to switch to the second domain space, obtain corresponding handover request instruction;
According to described handover request instruction, generate cipher key-extraction instruction;
Under the control of described cipher key-extraction instruction, extract that prestore with handover key corresponding when switching to described second domain space from TrustZone; And utilize this handover key to complete the handover operation switching to described second domain space from described first domain space.
7. the domain space changing method based on TrustZone according to claim 6, is characterized in that, also comprise:
Obtain raw information, and utilize key schedule, described raw information is processed, obtains handover key, and this handover key is sent to described TrustZone, to utilize described TrustZone, this handover key is stored.
8. the domain space changing method based on TrustZone according to claim 7, it is characterized in that, the process of described acquisition raw information comprises: obtain the fingerprint feature information of user, iris feature information, face feature information, sound characteristic information, palm print characteristics information or the character string information by input through keyboard.
9. the domain space changing method based on TrustZone according to claim 7, is characterized in that, the process of described acquisition raw information comprises:
Extract the ID of domain space, and using the ID of domain space as described raw information.
10. the domain space changing method based on TrustZone according to any one of claim 6 to 9, is characterized in that, also comprise:
When described domain space switch needs to extract handover key from described TrustZone, by data transmission channel, this handover key is transferred to described domain space switch;
Transmission is encrypted to the data transmitted in described data transmission channel.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510628574.8A CN105356998B (en) | 2015-09-28 | 2015-09-28 | A kind of domain space switching system and method based on TrustZone |
| PCT/CN2015/093546 WO2017054294A1 (en) | 2015-09-28 | 2015-10-31 | Trustzone-based domain space switching system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510628574.8A CN105356998B (en) | 2015-09-28 | 2015-09-28 | A kind of domain space switching system and method based on TrustZone |
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| CN105356998B CN105356998B (en) | 2019-06-11 |
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Also Published As
| Publication number | Publication date |
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| CN105356998B (en) | 2019-06-11 |
| WO2017054294A1 (en) | 2017-04-06 |
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