CN103746801A - Method for protecting dynamic password seed key on smart phone or tablet personal computer - Google Patents
Method for protecting dynamic password seed key on smart phone or tablet personal computer Download PDFInfo
- Publication number
- CN103746801A CN103746801A CN201410026380.6A CN201410026380A CN103746801A CN 103746801 A CN103746801 A CN 103746801A CN 201410026380 A CN201410026380 A CN 201410026380A CN 103746801 A CN103746801 A CN 103746801A
- Authority
- CN
- China
- Prior art keywords
- password
- key
- seed key
- dynamic password
- gesture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention discloses a method for protecting a dynamic password seed key on a smart phone or a tablet personal computer, relating to the field of information security. The method comprises the steps: when a dynamic password client side is activated, downloading a seed key from a dynamic password server side; generating a key for encrypting the seed by the client side through using a password or a gesture code simultaneously; saving the ciphertext of the seed key by the dynamic password client side, but not saving the password or the gesture code; when the client side is in use, generating a decryption key, decrypting the seed in a memory, and generating a dynamic password by factors such as the seed key and a time factor. The invention provides the method for protecting the dynamic password seed key on intelligent equipment, namely, only the ciphertext data of the seed key is stored in the intelligent equipment, the decryption key of the seed is not stored in the intelligent equipment, and thus the seed key stored in the intelligent equipment is prevented from being stolen; in addition, the password adopts a calculation mode instead of a conventional value comparison mode for verification.
Description
[technical field]
The present invention relates to dynamic password seed key guard method on a kind of smart mobile phone or panel computer.
[background technology]
Along with constantly popularizing of e-bank, electronic commerce affair on the Internet, business procedure fail safe more and more comes into one's own, particularly for the payment funding system of some e-banks, ecommerce, even more important for service security such as authentication, payment fundings.
In order to add strong identity authentication, general USB KEY and the dynamic password hardware token mode of adopting realizes safe authentication at present, also has part manufacturer to adopt the mode of dynamic password client software on smart mobile phone and panel computer to realize.Inventor, in realizing process of the present invention, finds that existing dynamic password client software at least exists following safety problem on smart mobile phone or panel computer:
It is basic identical that the safety of dynamic token and dynamic password client software dynamic password authentication realizes principle, all generally to adopt seed key and time factor (or challenge code) to carry out crypto-operation, result data intercepting, for dynamic password, is submitted to backstage dynamic password server by operation system; Backstage dynamic password server system is used same seed key and time factor (challenge code) to carry out same computing, produces identical dynamic password value, realizes safe authentication.
By above-mentioned, can be known, the seed key of dynamic token and dynamic password client software is the principal element of dynamic password authentication mechanism, guarantees the fail safe of seed key, also just can guarantee the safety of dynamic password authentication process.Dynamic token and dynamic password client software generally all in initialization or activation, download or pour into by secured fashion the seed key that dynamic password server generates for each terminal or software client.
Wherein dynamic token adopts hardware mode to realize, and seed key can be deposited in the secure storage areas of hardware, guarantees that it can arbitrarily not read or copy, thereby has guaranteed the authentication security based on dynamic token.
And operate in the dynamic password client software of smart mobile phone or panel computer, and because hardware or the operating system of the said equipment is easy to be cracked, cause the catalogue data of dynamic password client software to be easily read, cause seed key be easily read or copy.General dynamic password client software has also adopted the mode of encrypting to protect seed key; but the mode of fixed key in software code that is generally is encrypted; key storage is in the code of dynamic password client software; assailant, by decompiling dynamic password client software code, can obtain easily.Cannot ensure seed key Information Security main in dynamic password client software.
[summary of the invention]
The object of the invention is to solve the safety problem that the current implementation method of dynamic password client software exists, provide a kind of on smart mobile phone or panel computer the method for safe storage dynamic password client software seed key.
According to the safeguard protection of seed key of the present invention and storage means, specifically comprise the following steps:
Step 1: download installing terminal dynamic password client software on smart mobile phone or panel computer, user starts dynamic password client software.Dynamic password client software judges whether it is to start for the first time, if start for the first time, carries out step 2-3, otherwise carry out step 4;
Step 2: user starts dynamic password client software for the first time, need carry out activation manipulation, to dynamic password server, initiate to activate application, application for registration dynamic password client, the disposable active coding of providing when registration process comprises to the hardware sequence number of background server submission personal information, smart mobile phone or landing slab computer and pre-registration, dynamic password server system is by active coding authenticated user log-on message, authentication by after on backstage, record the hardware sequence number of custom end intelligent mobile phone or panel computer, and generate the seed key of this equipment.Then the secret key encryption seed key producing by active coding, produces ciphertext seed key data, is handed down to the dynamic password client software on custom end intelligent mobile phone or panel computer.
First step 3: dynamic password client software receives after ciphertext seed key, will require user that dynamic password client software is set and use password (or gesture password), after having arranged by its stored memory.Dynamic password client software produces the first key by active coding, deciphers seed key in internal memory; The use password arranging by user again (or gesture password) adds that hardware sequence number produces the second key, seed key clear data in internal memory is encrypted to computing, combination after encryption is left under the catalogue of dynamic password client software, complete and turn ciphering process, then eliminate use password data and key data in internal memory, prompting activates complete, restarts dynamic password client software;
Step 4: after dynamic password client software is restarted, user inputs and uses password (or gesture password), dynamic password client software obtains hardware sequence number, by the second key that uses password (or gesture password)+hardware sequence number to produce, from memory device, read ciphertext seed key data, with the second secret key decryption seed key.
Step 5: as computing requirement, " device hardware sequence number+timestamp+challenge code " carried out to Hash operation by the seed key in internal memory, the result obtaining intercepts 6 bit digital, shows on interface as dynamic password.
Step 6: exit or during screen locking, dynamic password client software should be removed the seed key in internal memory immediately, to protect the fail safe of seed key data at dynamic password client software.When again starting dynamic password client software, user inputs original use password (or gesture password), is decrypted seed key operates by step 4;
Step 7: user need revise the use password (or gesture password) of dynamic password client software, software will require user first to input original use password (or gesture password), from the lower ciphertext seed key data that read of current directory, by original use password (or gesture password)+hardware sequence number, generate the second key, decrypting ciphertext seed key data, as decryption error, password (or gesture password) mistake is used in prompting, as deciphered correctly, seed key is expressly temporarily stored in internal memory, prompting user arranges new use password (or gesture password)+hardware sequence number, generate the 3rd key, plaintext seed key in internal memory is encrypted, then be stored under current directory.
Step 8: user forgets while using password (or gesture password), dynamic password client software need with the dynamic password server system networking operation of resetting.Dynamic password client software mentions to dynamic password server system reset use password or gesture password request, and dynamic password server system resends active coding by short message mode, and the process of execution step 3 completes password replacement operation.
Described " current directory " refers to the storage facilities on smart mobile phone or panel computer, by smart machine operating system, is allocated to the memory space that dynamic password client software is used, and dynamic password client software has access right completely to this space.This memory space has the feature of be difficult for losing, and can restart at dynamic password client software, in the situation such as device looses power, and the data under catalogue can not lost.
Described " by active coding, producing the first key ", " the second key that uses password (or gesture password) to produce ", can adopt known method, such as passing through hash algorithm, can obtain:
The first key=HASH (active coding);
The second key=HASH (using password (or gesture password)+hardware sequence number);
Three key=HASH (newly-installed use password (or gesture password)+hardware sequence number);
Described " by deciphering seed key, the correctness of password (or gesture password) is used in checking ", to pass through decipherment algorithm, the correctness of password (or gesture password) is used in checking, as: before first byte of seed key clear data, add " 7A " sign head, after last byte of data, add " BD " sign tail, result after deciphering is check mark head and sign tail first, find or aforementioned sign head, in the situation that sign tail does not conform to, can assert Decryption failures, show that key is incorrect, the use password (or gesture password) that namely produces key is incorrect.If find after deciphering that aforementioned sign head, sign tail conform to, show that key is correct, the use password (or gesture password) that namely produces key is correct.
Described HASH algorithm comprises SM3, MAC, SHA1, SHA256, and HMAC and 3DES, the combination of SM4 scheduling algorithm are wherein a kind of.
The invention has the beneficial effects as follows:
In the present invention, dynamic password client software is by being used the seed key data of the secret key encryption dynamic password client key of password (or gesture password)+hardware sequence number generation, and only at dynamic password client software, only store ciphertext seed key data, and can not store the use password (or gesture password) of dynamic password client software, even if smart mobile phone or panel computer dynamic password client software catalogue are cracked, read, can not leak seed key information yet.
In the present invention, dynamic password client software is by being used the seed key of the secret key encryption key of password (or gesture password)+hardware sequence number generation, even if seed key is copied on other smart mobile phone or panel computer, because its hardware sequence number is not identical, also just cannot generate the decruption key of seed key.
The benefit of doing is like this, once smart machine is obtained by other people, even if read all programs and data under dynamic password client software catalogue, by program inverse compiling technique, obtain the decipherment algorithm of seed key, but used password (or gesture password) owing to obtaining, also just cannot be by using password (or gesture password) to generate the second key, cannot decrypting ciphertext seed key, cannot obtain the clear data of seed key.Also just cannot calculate correct dynamic password.And ciphertext seed key data copy on miscellaneous equipment and also because not deciphering, cannot use.
Meanwhile, dynamic password client software is verified way by computing, has solved in the situation that not storing use password (or gesture password), and password (or gesture password) correctness is used in checking.In addition, the requirement of using password (or gesture password) to revise, reset for dynamic password client software, also designed corresponding solution, can be in the situation that dynamic password client software not be preserved use password (or gesture password), complete and use the modification of password (or gesture password), the operation of resetting, make dynamic password client software only preserve the way of ciphertext seed key.
The generation of dynamic password client software seed key, to use the mode of master key+client device hardware sequence number to carry out by dynamic password server system, in dynamic password server system background data base, do not store the seed key of client, but produce in real time in use, thereby ensured the fail safe of seed key.
The master key of dynamic password server system produces in cipher machine, be stored on cipher machine, and calculating process carries out in cipher machine, has ensured the fail safe of seed key production process.
Dynamic password server system produces after seed key, and the key producing by active coding is encrypted to protection, by escape way, is issued on dynamic password client software, has ensured the fail safe of seed key.
[accompanying drawing explanation]
Fig. 1 is the process schematic diagram of downloading, turn encryption seed key in dynamic password client software activation provided by the invention;
Fig. 2 is the process schematic diagram that dynamic password client software provided by the invention generates dynamic password;
Fig. 3 is that dynamic password client software provided by the invention is revised the process schematic diagram that uses password (or gesture password);
[embodiment]
As shown in Figure 1, the present invention is based on smart mobile phone or panel computer dynamic password client software seed key in the guard method of activation, comprise the steps:
S1: user starts dynamic password client software for the first time.
S2: if not being to start for the first time, carrying out dynamic password client software and enter normal operating condition, can normally produce dynamic password.If start for the first time, need to submit personal information to dynamic password server system, and dynamic password client software extracts hardware sequence number from smart machine, be submitted to together dynamic password server system.
S3: server lookup user profile, inquire this user and carried out pre-registration, server system returns agrees to that active information is to dynamic password client software.Otherwise return to error message, exit processing procedure
S4: the active coding that dynamic password client software prompting user provides while inputting pre-registration, jointly be submitted to dynamic password server system with device hardware sequence number, dynamic password server system checking active coding authenticity, and whether this active coding uses for the first time.
S5: dynamic password server system records the hardware sequence number of custom end intelligent mobile phone or panel computer, and pass through the computing of SM3 algorithm by system master key and the device hardware sequence number+version number storing on server system, generate the seed key of this equipment.
S6: then adopt SM3 algorithm, carry out SM3 (active coding), get 16, the right byte data of result, as the first key, encryption seed key, generating ciphertext seed key, sends to custom end intelligent mobile phone or panel computer.
S7: custom end intelligent mobile phone or panel computer dynamic password client software receive after ciphertext seed key, first require user that dynamic password client software is set and use password (or gesture password)+hardware sequence number, then dynamic password client software produces the first key by active coding, deciphers seed key in internal memory; Again by SM3 (using password (or gesture password)+hardware sequence number), get right 16 bytes of result data, produce the second key, " 0x7A " marking head that adds a byte before seed key in internal memory, " 0xBD " sign tail that finally adds a byte at seed key, with the second secret key encryption, form ciphertext seed key, ciphertext seed key is left under the current directory of dynamic password client software.
S8: eliminate use password (or gesture password) data and the first key and the second key data in internal memory after success, and return to activation success status to server system, and it is complete to point out user to activate, and restarts dynamic password client software in several seconds.
Because dynamic password client software in the present invention is only stored the seed data of ciphertext, do not store and use password (or gesture password), therefore exist dynamic password client software how to verify in use the correctness of judgement use password (or gesture password), and the process of the generation of dynamic password, it comprises the following steps:
S9: the startup of dynamic password client software program enters after normal operating condition, user inputs and uses password (or gesture password);
S10: dynamic password client software is got right 16 bytes of result data by SM3 (using password (or gesture password+hardware sequence number)), generate the second key, from memory device, read ciphertext seed key data, with the second secret key decryption ciphertext seed key;
S11: relatively decipher first byte and last byte of seed key result, whether checking is " 0x7A " and " 0xBD ", if data are correct, show to use password (or gesture password) correct, otherwise password mistake is used in prompting;
S12: use in the correct situation of password authentication, seed key after deciphering is temporarily stored in internal memory, and the data of password (or gesture password) are used in elimination, by seed key+device hardware sequence number+timestamp+challenge code, calculated and carried out SM3 computing, 6, the left side, 0～9 data that obtain result show as dynamic password;
When user exits dynamic password client software or screen locking, dynamic password client software is by the seed key data of removing in internal memory.While again entering dynamic password client software, require user to input original use password (or gesture password), by step 4, be decrypted seed key and operate;
Because dynamic password client software in the present invention is only stored the seed data of ciphertext, do not store and use password (or gesture password), therefore exist dynamic password client software how to revise and use password (or gesture password), it comprises the following steps:
S14: user carries out the use password (or gesture password) of dynamic password client software and revises interface;
S15: require user first to input original use password (or gesture password), read ciphertext seed key from memory device, generate the second key, decrypting ciphertext seed key by original use password (or gesture password);
S16: press S11 step and judge whether decryption error prompting use password (or gesture password) is correct
S17: seed key is expressly temporarily stored in internal memory as deciphered correctly, prompting user arranges new use password (or gesture password), generates the 3rd key, and the plaintext seed key in internal memory is encrypted, and is then stored under current directory.
User forgets while using password (or gesture password), dynamic password client software need with the background server networking operation of resetting.Carry out S1-S8 operation, complete password replacement operation.
For the ease of calculating and the processing of data, dynamic password client software can be from the Internet or operator obtain the standard time, corresponding background server system obtains the standard time by the Internet ntp server.Dynamic password client software and background server system obtain current time as time factor from local operation system, and time factor adopts the UTC time format (integral multiple with second represents) of national Password Management office regulation.
Claims (3)
1. a dynamic password seed key guard method on smart mobile phone or panel computer, is characterized in that, the method comprises:
A. at smart mobile phone or panel computer, download and install dynamic password client software, and the active coding during by input user profile and pre-registration activates;
B. dynamic password client software extraction equipment hardware sequence number, jointly be committed to the checking of dynamic password server system with user profile and active coding, after being verified, for it, issue master key and disperse the seed key producing, and produce key with active coding, after encryption seed key, be issued to dynamic password client software;
C. dynamic password client software produces decruption key by active coding, the seed key ciphertext that deciphering issues, in internal memory, obtain seed key expressly, dynamic password client software requires user's setup and use password (or gesture password), by using password (or gesture password) and hardware sequence number to produce encryption key, encryption seed key.Under dynamic password client software catalogue, only store ciphertext seed key, do not store and use password (or gesture password), when again opening and using dynamic password client software, require user to input and use password (or gesture password), by its real-time generating solution decryption key, in internal memory, decipher seed key, then can normally carry out dynamic password generative process;
D. owing to not storing, use password (or gesture password), therefore can not adopt the mode verification of common comparison to use password (or gesture password), the present invention verifies by the preset sign head of verification seed key and sign tail, the decruption key that uses password (or gesture password) to generate, direct decrypting ciphertext seed key, preset sign head and the sign tail correctness of data checks after deciphering, when incorrect, show to use password (or gesture password) incorrect, sign head and sign tail show to use password (or gesture password) correct when correct;
E. owing to not storing, use password (or gesture password), therefore revise while using password (or gesture password), need user to input original use password (or gesture password), verification by after new use password (or gesture password) is set again;
F. owing to not storing, use password (or gesture password), user forgets while using password (or gesture password), need network with dynamic password server system, re-start activation, regenerate the seed key that issues redaction, heavy setup and use password (or gesture password).
2. dynamic password seed key guard method on a kind of smart mobile phone according to claim 1 or panel computer; it is characterized in that: the guard method of seed key in described step c; the seed key specifically referring to is by the secret key encryption of using password (or gesture password) and hardware sequence number to produce; but do not store, do not use password (or gesture password) under dynamic password client software catalogue; but real-time generating solution decryption key is deciphered seed key in use, then generate dynamic password by seed key.
3. according to the seed key guard method of dynamic password client software on a kind of smart machine described in claim 1 and 2; be further characterized in that: the algorithm of the uses such as described step c, d, e comprises SM3, MAC, SHA1, SHA256, and HMAC and 3DES, the combination of SM4 scheduling algorithm are wherein a kind of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410026380.6A CN103746801A (en) | 2014-01-21 | 2014-01-21 | Method for protecting dynamic password seed key on smart phone or tablet personal computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410026380.6A CN103746801A (en) | 2014-01-21 | 2014-01-21 | Method for protecting dynamic password seed key on smart phone or tablet personal computer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103746801A true CN103746801A (en) | 2014-04-23 |
Family
ID=50503792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410026380.6A Pending CN103746801A (en) | 2014-01-21 | 2014-01-21 | Method for protecting dynamic password seed key on smart phone or tablet personal computer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103746801A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104184592A (en) * | 2014-09-10 | 2014-12-03 | 上海众人科技有限公司 | Dynamic token and implementation method of dynamic token, and dynamic password authentication method and system |
| CN104519066A (en) * | 2014-12-23 | 2015-04-15 | 飞天诚信科技股份有限公司 | Method for activating token of mobile terminal |
| CN105069619A (en) * | 2015-07-17 | 2015-11-18 | 上海众人网络安全技术有限公司 | On-line fast payment system and payment method thereof |
| CN106230600A (en) * | 2016-08-10 | 2016-12-14 | 武汉信安珞珈科技有限公司 | A kind of generation method and system of dynamic password |
| CN106998250A (en) * | 2016-01-23 | 2017-08-01 | 龙翔林 | The method that mobile phone dynamically manages computer operating system login password |
| CN108400868A (en) * | 2018-01-17 | 2018-08-14 | 深圳市文鼎创数据科技有限公司 | Storage method, device and the mobile terminal of seed key |
| CN108512657A (en) * | 2017-02-28 | 2018-09-07 | 中兴通讯股份有限公司 | A kind of method for generating cipher code and device |
| CN108985977A (en) * | 2018-07-18 | 2018-12-11 | 石伟男 | A kind of property intelligent supervision management system |
| CN109450647A (en) * | 2018-12-18 | 2019-03-08 | 飞天诚信科技股份有限公司 | A kind of method and system of dynamic token safety in production and detection |
| CN109586921A (en) * | 2018-12-14 | 2019-04-05 | 飞天诚信科技股份有限公司 | A kind of method and system for realizing dynamic password |
| CN112769846A (en) * | 2021-01-18 | 2021-05-07 | 成都质数斯达克科技有限公司 | Key management method and device, electronic equipment and readable storage medium |
-
2014
- 2014-01-21 CN CN201410026380.6A patent/CN103746801A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104184592A (en) * | 2014-09-10 | 2014-12-03 | 上海众人科技有限公司 | Dynamic token and implementation method of dynamic token, and dynamic password authentication method and system |
| CN104519066A (en) * | 2014-12-23 | 2015-04-15 | 飞天诚信科技股份有限公司 | Method for activating token of mobile terminal |
| CN104519066B (en) * | 2014-12-23 | 2017-11-28 | 飞天诚信科技股份有限公司 | A kind of method for activating mobile terminal token |
| CN105069619A (en) * | 2015-07-17 | 2015-11-18 | 上海众人网络安全技术有限公司 | On-line fast payment system and payment method thereof |
| CN106998250A (en) * | 2016-01-23 | 2017-08-01 | 龙翔林 | The method that mobile phone dynamically manages computer operating system login password |
| CN106230600A (en) * | 2016-08-10 | 2016-12-14 | 武汉信安珞珈科技有限公司 | A kind of generation method and system of dynamic password |
| CN108512657A (en) * | 2017-02-28 | 2018-09-07 | 中兴通讯股份有限公司 | A kind of method for generating cipher code and device |
| CN108400868A (en) * | 2018-01-17 | 2018-08-14 | 深圳市文鼎创数据科技有限公司 | Storage method, device and the mobile terminal of seed key |
| CN108985977A (en) * | 2018-07-18 | 2018-12-11 | 石伟男 | A kind of property intelligent supervision management system |
| CN109586921A (en) * | 2018-12-14 | 2019-04-05 | 飞天诚信科技股份有限公司 | A kind of method and system for realizing dynamic password |
| CN109450647A (en) * | 2018-12-18 | 2019-03-08 | 飞天诚信科技股份有限公司 | A kind of method and system of dynamic token safety in production and detection |
| CN109450647B (en) * | 2018-12-18 | 2022-04-29 | 飞天诚信科技股份有限公司 | Method and system for safely producing and detecting dynamic token |
| CN112769846A (en) * | 2021-01-18 | 2021-05-07 | 成都质数斯达克科技有限公司 | Key management method and device, electronic equipment and readable storage medium |
| CN112769846B (en) * | 2021-01-18 | 2022-11-11 | 成都质数斯达克科技有限公司 | Key management method and device, electronic equipment and readable storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103746801A (en) | Method for protecting dynamic password seed key on smart phone or tablet personal computer | |
| US11469885B2 (en) | Remote grant of access to locked data storage device | |
| JP4562464B2 (en) | Information processing device | |
| US20140270179A1 (en) | Method and system for key generation, backup, and migration based on trusted computing | |
| CN106571951B (en) | Audit log obtaining method, system and device | |
| KR20170067527A (en) | Apparatus and Method for Providing API Authentication using Two API Tokens | |
| CN106452764B (en) | Method for automatically updating identification private key and password system | |
| KR20180075513A (en) | Method and apparatus for realizing session identifier synchronization | |
| WO2020173332A1 (en) | Trusted execution environment-based application activation method and apparatus | |
| CN106452770B (en) | Data encryption method, data decryption method, device and system | |
| CN109035519B (en) | Biological feature recognition device and method | |
| CN103138939A (en) | Secret key use time management method based on credible platform module under cloud storage mode | |
| CN107920052B (en) | Encryption method and intelligent device | |
| CN108199847B (en) | Digital security processing method, computer device, and storage medium | |
| CN111401901B (en) | Authentication method and device of biological payment device, computer device and storage medium | |
| WO2014169627A1 (en) | Application unlocking method and device | |
| US11606206B2 (en) | Recovery key for unlocking a data storage device | |
| EP3609118A1 (en) | Method and system for managing cloud service cluster | |
| WO2013097209A1 (en) | Encryption method, decryption method, and relevant device and system | |
| KR20170124953A (en) | Method and system for automating user authentication with decrypting encrypted OTP using fingerprint in mobile phone | |
| US20200233947A1 (en) | System and method for facilitating authentication via a short-range wireless token | |
| CN111241492A (en) | Product multi-tenant secure credit granting method, system and electronic equipment | |
| US11216571B2 (en) | Credentialed encryption | |
| EP2985712B1 (en) | Application encryption processing method, apparatus, and terminal | |
| CN104899480A (en) | Software copyright protection and management method based on combined public key identity authentication technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140423 |
|
| WD01 | Invention patent application deemed withdrawn after publication |