CN102332077A - Hand-held equipment data encryption and decryption method and hand-held equipment peripheral equipment thereof - Google Patents
Hand-held equipment data encryption and decryption method and hand-held equipment peripheral equipment thereof Download PDFInfo
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- CN102332077A CN102332077A CN2010102263906A CN201010226390A CN102332077A CN 102332077 A CN102332077 A CN 102332077A CN 2010102263906 A CN2010102263906 A CN 2010102263906A CN 201010226390 A CN201010226390 A CN 201010226390A CN 102332077 A CN102332077 A CN 102332077A
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Abstract
The invention relates to a hand-held equipment data encryption and decryption method and hand-held equipment peripheral equipment with encryption and decryption functions. In the hand-held equipment data encryption and decryption method, the hand-held equipment peripheral equipment with the encryption and decryption functions is used for encrypting and decrypting private data in the hand-held equipment, when the encryption and the decryption are completed, the hand-held equipment peripheral equipment with the encryption and decryption functions can be physically separated from the hand-held equipment, when the hand-held equipment is not connected with the hand-held equipment peripheral equipment with the encryption and decryption functions, the private data in the hand-held equipment can not be encrypted, and the encrypted data can not be decrypted, so the security of the encrypted data is ensured. A key used during the encryption and the decryption is stored in the hand-held equipment peripheral equipment with the encryption and decryption functions and is bound with the hand-held equipment peripheral equipment, and the security and the uniqueness of the encryption key are ensured.
Description
Technical field
The present invention relates to the handheld device technical field, relate in particular to a kind of encipher-decipher method and handheld device peripheral hardware of handset data safety with encryption and decryption functions.
Background technology
Increasingly mature along with mobile communication technology; It is swift and violent that handheld device such as mobile phone, PDA develops; The handheld device function also from strength to strength, it can match in excellence or beauty with computer aspect a lot, such as the application of softwares such as the transmitting-receiving of Email, office; In addition more portable advantage is arranged, firmly get popular great kindness.But meanwhile; But brought new problem for people in the security of the local data message of preserving of handheld device; Relate in particular to address list, note, the picture of individual privacy and relate to Email, electronic contract of trade secret or the like; These data are extremely important, in case be stolen the user who gives handheld device such as mobile phone, PDA brought great potential safety hazard.
Summary of the invention
Technical matters to be solved by this invention provides a kind of handset data safe encryption method; The individual privacy data message of handheld device user is encrypted; Even the information after encrypted of making is stolen also can't be deciphered, thus the protection of safety the individual privacy data of handheld device user.
The technical scheme that the present invention solves the problems of the technologies described above is following: a kind of handset data safe encryption method may further comprise the steps:
Step a1: on handheld device, set up the private data group;
Step a2: expressly private data is perhaps edited in newly-built in said private data group, interpolation;
Step a3: expressly private data is transferred to and encrypts in the handheld device peripheral hardware with hardware enciphering and deciphering function;
Step a4: the private data after will encrypting reads back in the handheld device and preserves or replace original plaintext private data.
The invention has the beneficial effects as follows: the data message in the private data group is encrypted; Can not have influence on other data messages beyond the private data group; Make handheld device user to encrypt to needed data; Needn't encrypt the data message in all handheld devices, practical; Handheld device peripheral hardware through having the hardware enciphering and deciphering function carries out cryptographic operation; Avoided the risk of being deciphered through handheld device being easy to of carrying out that cryptographic operation brought itself; Handheld device peripheral hardware with hardware enciphering and deciphering function can separate and cut off and be connected with handheld device; Like this; When the handheld device peripheral hardware with hardware enciphering and deciphering function and handheld device break off be connected after, only just can't carry out decryption oprerations to data encrypted through handheld device, make the security of handset data improve greatly.
On the basis of technique scheme, the present invention can also do following improvement.
Further, said handheld device with hardware enciphering and deciphering function is made as contact interfacing equipment or the non-contact interface equipment that links to each other with handheld device outward.
Further, said contact interface is USB, SD, MicroSD, MiniSD or MMC interface, and said non-contact interface is Wifi, RF or blue tooth interface.
Adopt the beneficial effect of above-mentioned further scheme to be, adopt contact interfacing equipments such as USB, SD, MicroSD, MiniSD or MMC be convenient to and handheld device between plug, handheld device needn't be carried out hardware modification specially, has reduced manufacturing cost; Adopt non-contact interface equipment such as Wifi, RF or bluetooth, can realize having the handheld device peripheral hardware of hardware enciphering and deciphering function and the wireless connections between the handheld device, avoided contact to connect trouble caused.
Further, said handheld device peripheral hardware with hardware enciphering and deciphering function has the data stream encryption and decryption functions.
Adopt the beneficial effect of above-mentioned further scheme to be; Adopt the data stream encryption and decryption technology that batch data is carried out encrypting and decrypting; As batch datas such as many parts of 64K, 128K, 256K are encrypted or deciphering; Make encryption/decryption speed fast, and the data that can not cause reading the private data group after the encryption and decryption become slow.
Further, said enciphering and deciphering algorithm with handheld device peripheral hardware of hardware enciphering and deciphering function is one or more the combination among SM1, AES, DES, the RSA.
Further, said enciphering and deciphering algorithm with handheld device peripheral hardware of hardware enciphering and deciphering function is symmetry algorithm or asymmetric arithmetic.
Further, said handheld device peripheral hardware with hardware enciphering and deciphering function generates the encryption and decryption key of said private data, and preserves this encryption and decryption key.
Adopt the beneficial effect of above-mentioned further scheme to be, make the encryption and decryption key only in having the handheld device peripheral hardware of hardware enciphering and deciphering function, exist, guaranteed the safety of encryption and decryption key, thus the safety of the private data that has further guaranteed to be encrypted.
Further, said encryption and decryption key is corresponding one by one with said handheld device peripheral hardware with hardware enciphering and deciphering function.
Adopt the beneficial effect of above-mentioned further scheme to be; The encryption and decryption key is corresponding one by one with said handheld device peripheral hardware with hardware enciphering and deciphering function; Be that binding between the series number of handheld device private data encryption and decryption key and the handheld device peripheral hardware with hardware enciphering and deciphering function has uniqueness; Make enciphered data and have between the handheld device peripheral hardware of hardware enciphering and deciphering function and have unique correspondence, avoid the danger of adopting another handheld device peripheral hardware that enciphered data is deciphered with hardware enciphering and deciphering function.
Further, said private data is set up in the local internal memory of SIM, handheld device or the outside expansion card of handheld device that stands in handheld device.
Adopt the beneficial effect of above-mentioned further scheme to be, be convenient to the data in the private data group are managed, link to each other with handheld device even without the handheld device peripheral hardware with hardware enciphering and deciphering function, the user also can check the data that the private data group is not encrypted.
Further, said private data is the file layout data that handheld device is supported.
Further, said private data is address list, note, Email, text or picture etc.
Adopt the beneficial effect of above-mentioned further scheme to be; The file layout data of the handheld device supports such as personal information of handheld device user such as address list, note, Email, text or picture all can be used as cryptographic object and encrypt, thereby guarantee that user's private information is not stolen.
Further, said handheld device is mobile phone or PDA.
According to above-mentioned handset data safe encryption method, the present invention also provides a kind of handset data secure decryption method, may further comprise the steps:
Step b1: the private data in the described handheld device of above each item is transferred in the described handheld device peripheral hardware with hardware enciphering and deciphering function of above each item deciphers;
Step b2: the plaintext private data after will deciphering reads in the handheld device buffer memory to be opened.
Adopt above-mentioned handset data secure decryption method; Have only through the described handheld device peripheral hardware in above-mentioned each item and could decipher the private data that above-described handset data safe encryption method is encrypted with hardware enciphering and deciphering function; The great like this security that strengthens enciphered data; Even data encrypted is stolen, if there is not above-mentioned handheld device peripheral hardware also can't to be deciphered with hardware enciphering and deciphering function.
Above-mentioned handheld device peripheral hardware with hardware enciphering and deciphering function is owing to be to belong to the peripheral hardware that can break off with handheld device; Therefore after private data is encrypted; Above-mentioned handheld device peripheral hardware with hardware enciphering and deciphering function is connected or the physics disconnection with the handheld device cut-out; Just can't communicate between handheld device and its and get in touch; Also just can't encrypt or decryption oprerations the handheld device private data, handheld device private data user can be relieved private data is encrypted taken out of later, even handheld device is lost the leakage that can not cause data message.
Employed encryption and decryption key is deposited among the above-mentioned handheld device peripheral hardware with hardware enciphering and deciphering function during encryption and decryption; And bind between this key and this peripheral hardware; Make key and peripheral hardware have one-to-one relationship; Each has only corresponding encryption and decryption key of handheld device peripheral hardware of hardware enciphering and deciphering function; Feasible employing has the handheld device peripheral hardware of hardware enciphering and deciphering function and encrypts private data afterwards, also can't decipher through the handheld device peripheral hardware with hardware enciphering and deciphering function of other products of the same race, makes that encryption method of the present invention and decryption method are more reliable.
According to above-mentioned handheld device safe encryption method and decryption method; The present invention also provides a kind of handheld device peripheral hardware with hardware enciphering and deciphering function, comprises the ROM (read-only memory), central controller, crypto key memory, encryption and decryption module and the interface that are electrically connected each other through bus; Said ROM (read-only memory) is used for the program that this handheld device peripheral hardware is moved; Said encryption and decryption module is used for data are carried out the encryption and decryption operation of hardware; Said central controller is used to move the program on the ROM (read-only memory), and crypto key memory, encryption and decryption module and interface are controlled; Said interface is used for reception and the transmission of carrying out data between the handheld device.
Adopt above-mentioned handheld device peripheral hardware with hardware enciphering and deciphering function; After central controller is received the instruction of enciphering/deciphering from interface; Central controller just can control interface receives the data of the enciphering/deciphering of wanting; And carry out enciphering/deciphering through the encryption and decryption module and operate, enciphering/deciphering sends back to interface after accomplishing, and sends back handheld device through interface.Thereby realize the ciphering process in aforesaid encryption method and the exposition method.
Further, between said interface and the handheld device be split-type structural.
Adopt the beneficial effect of above-mentioned further scheme to be; After encrypting or deciphering completion; Can interface and handheld device physics be broken off; Make handheld device and this have between the handheld device peripheral hardware of hardware enciphering and deciphering function and can't carry out exchanges data, thereby make data encrypted deciphered, only if be connected again when between this handheld device peripheral hardware and the handheld device.Carry out physics according to demand between interface and the handheld device and break off, can guarantee the safety of institute's enciphered data.
Further, said interface is contact interface or non-contact interface.
Further, said contact interface is USB, SD, MicroSD, MiniSD or MMC interface, and said non-contact interface is Wifi, RF or blue tooth interface.
Further, the combination of one or more in said encryption and decryption module employing SM1, AES, DES, the RSA Algorithm.
Further, said encryption and decryption module adopts symmetry algorithm or asymmetric arithmetic.
Adopt the beneficial effect of above-mentioned further scheme to be, utilize one or more the combination in SM1, AES, DES, the RSA Algorithm, adopt symmetry algorithm or asymmetric arithmetic, it is safer to carry out ciphered data through the hardware encipher method.
Description of drawings
Fig. 1 is the process flow diagram of handset data safe encryption method of the present invention;
Fig. 2 is the process flow diagram of handset data secure decryption method of the present invention;
Fig. 3 is the structural drawing with handheld device peripheral hardware of hardware enciphering and deciphering function of the present invention.
Embodiment
Below in conjunction with accompanying drawing principle of the present invention and characteristic are described, institute gives an actual example and only is used to explain the present invention, is not to be used to limit scope of the present invention.
The process flow diagram of handset data safe encryption method of the present invention is as shown in Figure 1, and its flow process is following:
Step 1: judge whether that the handheld device peripheral hardware with hardware enciphering and deciphering function is connected with handheld device, if execution in step 3 then, otherwise execution in step 2;
Step 2: handheld device is linked to each other with the handheld device peripheral hardware with hardware enciphering and deciphering function, and execution in step 3;
Step 3: judge whether to create the private data group, if execution in step 5 then, otherwise execution in step 4;
Step 4: create the private data group, and execution in step 5;
Step 5: expressly private data is perhaps edited in newly-built in the private data group, interpolation, and execution in step 6;
Step 6: be transferred to handheld device peripheral hardware to the plaintext private data and encrypt with hardware enciphering and deciphering function, and execution in step 7;
Step 7: pass the ciphertext private data after encrypting back in handheld device replacement cause plaintext private data.
The process flow diagram of handset data secure decryption method of the present invention is as shown in Figure 2, and its flow process is following:
Step 8: judge whether the handheld device peripheral hardware with hardware enciphering and deciphering function is connected with handheld device, if for being then execution in step 10, if be otherwise execution in step 9;
Step 9: the handheld device peripheral hardware that will have encryption function links to each other with handheld device, and execution in step 10;
Step 10: the private data in the handheld device is transferred in the handheld device peripheral hardware with hardware enciphering and deciphering function deciphers, and execution in step 11;
Step 11: the plaintext private data after will deciphering reads in the handheld device buffer memory to be opened.
In the encryption and decryption method of above-mentioned handset data safety, employed handheld device with hardware enciphering and deciphering function is made as same peripheral hardware outward.The private data that uses some handheld device peripheral hardwares with hardware enciphering and deciphering function to encrypt only can be deciphered through this peripheral hardware, uses other the handheld device peripheral hardware with hardware enciphering and deciphering function to decipher.Encryption and decryption key in the above-mentioned handheld device peripheral hardware with hardware enciphering and deciphering function is bound mutually with this handheld device peripheral hardware series number and is had a uniqueness; Avoid having the duplicating of handheld device peripheral hardware of hardware enciphering and deciphering function, thereby guaranteed the safety of enciphered data.
Aforesaid private data is set up and is stood in handheld device SIM, the local internal memory of handheld device or the outside expansion card of handheld device; Can the data outside the private data group directly be added in the private data group as the plaintext private data; The documentum privatum of the file layout that above-mentioned private data can be supported for handheld devices such as address list, note, Email, text and pictures.
The handheld device peripheral hardware with hardware enciphering and deciphering function in the encryption and decryption method of above-mentioned handset data safety can adopt the contact interfacing equipment that can link to each other with handheld device of interfaces such as having USB, SD, MicroSD, MiniSD or MMC, also can adopt the non-contact interface equipment that can link to each other with handheld device of interfaces such as Wifi, RF or bluetooth.And this handheld device peripheral hardware with hardware enciphering and deciphering function has the data stream encryption and decryption functions; It can adopt one or more the combination in the enciphering and deciphering algorithms such as SM1, AES, DES, RSA; And can adopt symmetry algorithm or asymmetric arithmetic; Thereby guarantee the security of enciphered data, encryption key is generated and is preserved by the handheld device peripheral hardware with hardware enciphering and deciphering function self, avoids the danger that possibly revealed in the handheld device preservation.
Involved handheld device includes but not limited to mobile phone and PDA among the present invention.
According to aforesaid handset data safety encipher, decryption method; Handheld device peripheral hardware with hardware enciphering and deciphering function used in the present invention is as shown in Figure 3; Comprise the ROM (read-only memory) c1, central controller c2, crypto key memory c3, encryption and decryption module c4 and the interface c5 that are electrically connected each other through bus, wherein:
ROM (read-only memory) c1 is used for depositing the handheld device peripheral hardware firmware with hardware enciphering and deciphering function, and this firmware is the program of whole this handheld device peripheral hardware operation of central controller c2 control;
Central controller c2 is responsible for handling all kinds of incidents of this handheld device peripheral hardware; As move the program on the ROM (read-only memory) c1; And crypto key memory c3, encryption and decryption module c4 and interface c5 controlled, receive data from interface c5 and data are carried out operations such as encryption and decryption to encryption and decryption module c4;
Crypto key memory c3 is a programming device, is used for preserving encryption and decryption key and other data;
Encryption and decryption module c4 carries out the module of hardware enciphering and deciphering operation to data; This module can be one or more combination of symmetries such as SM1, AES, DES, RSA or rivest, shamir, adelman; The security of using these hardware enciphering and deciphering algorithms to improve whole handset data more makes enciphered data be difficult to crack;
The interface c5 that links to each other with handheld device; This interface c5 can with handheld device from physically breaking off and being connected; Can be interfaces such as contact interface such as USB, SD, MicroSD, MiniSD or MMC, also can be interfaces such as contactless interface such as Wifi, RF or bluetooth.
The principle of work of the handheld device peripheral hardware with hardware enciphering and deciphering function of the present invention is following.
Key is provided with: said handheld device is located at outward and generates the encryption and decryption key when producing, and also can in use remodify the encryption and decryption key, and the encryption and decryption key leaves among the crypto key memory c3; The method of revising the encryption and decryption key is for setting the interface command of revising the encryption and decryption key in program, central controller c2 is kept in the middle of the crypto key memory c3 from regenerating the encryption and decryption key after interface c5 receives this order;
Ciphering process: receive the instruction of needs encryption from interface c5 as central controller c2 after; Receive the ciphered data of wanting; Algorithm through encryption and decryption module c4 uses handheld device to need is encrypted, and encryption sends back to interface c5 after accomplishing, and sends it back handheld device;
Decrypting process: receive the instruction of needs deciphering from interface c5 as central controller c2 after; Can receive the decrypted data of wanting; Algorithm through encryption and decryption module c4 uses handheld device to need is deciphered, and deciphering sends back to interface c5 after accomplishing, and sends it back handheld device.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (19)
1. a handset data safe encryption method is characterized in that, may further comprise the steps:
Step a1: on handheld device, set up the private data group;
Step a2: expressly private data is perhaps edited in newly-built in said private data group, interpolation;
Step a3: expressly private data is transferred to and encrypts in the handheld device peripheral hardware with hardware enciphering and deciphering function;
Step a4: the private data after will encrypting reads back in the handheld device and preserves or replace original plaintext private data.
2. handset data safe encryption method according to claim 1 is characterized in that: said handheld device with hardware enciphering and deciphering function is made as contact interfacing equipment or the non-contact interface equipment that links to each other with handheld device outward.
3. handset data safe encryption method according to claim 2 is characterized in that: said contact interface is USB, SD, MicroSD, MiniSD or MMC interface, and said non-contact interface is Wifi, RF or blue tooth interface.
4. according to each described handset data safe encryption method of claim 1 to 3, it is characterized in that: said handheld device peripheral hardware with hardware enciphering and deciphering function has the data stream encryption and decryption functions.
5. according to each described handset data safe encryption method of claim 1 to 3, it is characterized in that: said enciphering and deciphering algorithm with handheld device peripheral hardware of hardware enciphering and deciphering function is one or more the combination among SM1, AES, DES, the RSA.
6. according to each described handset data safe encryption method of claim 1 to 3, it is characterized in that: said enciphering and deciphering algorithm with handheld device peripheral hardware of hardware enciphering and deciphering function is symmetry algorithm or asymmetric arithmetic.
7. according to each described handset data safe encryption method of claim 1 to 3, it is characterized in that: said handheld device peripheral hardware with hardware enciphering and deciphering function generates the encryption and decryption key of said private data, and preserves this encryption and decryption key.
8. handset data safe encryption method according to claim 7 is characterized in that: said encryption and decryption key is corresponding one by one with said handheld device peripheral hardware with hardware enciphering and deciphering function.
9. handset data safe encryption method according to claim 1 is characterized in that: said private data is set up in the local internal memory of SIM, handheld device or the outside expansion card of handheld device that stands in handheld device.
10. handset data safe encryption method according to claim 1 is characterized in that: said private data is the file layout data that handheld device is supported.
11. handset data safe encryption method according to claim 10 is characterized in that: said private data is address list, note, Email, text or picture.
12. according to claim 1 to 3 or 9 to 11 each described handset data safe encryption methods, it is characterized in that: said handheld device is mobile phone or PDA.
13. a handset data secure decryption method is characterized in that, may further comprise the steps:
Step b1: the private data in the handheld device described in the claim 1 to 12 is transferred in the handheld device peripheral hardware with hardware enciphering and deciphering function described in the claim 1 to 12 deciphers;
Step b2: the plaintext private data after will deciphering reads in the handheld device buffer memory to be opened.
14. the handheld device peripheral hardware with hardware enciphering and deciphering function is characterized in that: comprise the ROM (read-only memory), central controller, crypto key memory, encryption and decryption module and the interface that are electrically connected each other through bus; Said ROM (read-only memory) is used for the program that this handheld device peripheral hardware is moved; Said encryption and decryption module is used for data are carried out the encryption and decryption operation of hardware; Said central controller is used to move the program on the ROM (read-only memory), and crypto key memory, encryption and decryption module and interface are controlled; Said interface is used for reception and the transmission of carrying out data between the handheld device.
15. the handheld device peripheral hardware with hardware enciphering and deciphering function according to claim 14 is characterized in that: be split-type structural between said interface and the handheld device.
16. according to claim 14 or 15 described handheld device peripheral hardwares with hardware enciphering and deciphering function, it is characterized in that: said interface is contact interface or non-contact interface.
17. the handheld device peripheral hardware with hardware enciphering and deciphering function according to claim 6 is characterized in that: said contact interface is USB, SD, MicroSD, MiniSD or MMC interface, and said non-contact interface is Wifi, RF or blue tooth interface.
18., it is characterized in that: the combination of one or more in said encryption and decryption module employing SM1, AES, DES, the RSA Algorithm according to claim 14 or 15 described handheld device peripheral hardwares with hardware enciphering and deciphering function.
19. according to claim 14 or 15 described handheld device peripheral hardwares with hardware enciphering and deciphering function, it is characterized in that: said encryption and decryption module adopts symmetry algorithm or asymmetric arithmetic.
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| CN2010102263906A CN102332077A (en) | 2010-07-14 | 2010-07-14 | Hand-held equipment data encryption and decryption method and hand-held equipment peripheral equipment thereof |
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| CN2010102263906A CN102332077A (en) | 2010-07-14 | 2010-07-14 | Hand-held equipment data encryption and decryption method and hand-held equipment peripheral equipment thereof |
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Application publication date: 20120125 |