CN111931254A - Hybrid identification method for unique identification of Android device - Google Patents
Hybrid identification method for unique identification of Android device Download PDFInfo
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- CN111931254A CN111931254A CN202011028065.9A CN202011028065A CN111931254A CN 111931254 A CN111931254 A CN 111931254A CN 202011028065 A CN202011028065 A CN 202011028065A CN 111931254 A CN111931254 A CN 111931254A
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- android
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/71—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information
- G06F21/73—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information by creating or determining hardware identification, e.g. serial numbers
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/602—Providing cryptographic facilities or services
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/70—Software maintenance or management
- G06F8/71—Version control; Configuration management
Abstract
The invention relates to a hybrid identification method of unique identification of Android equipment. The invention is very integrated for the hybrid method for obtaining the unique identification code, can meet most requirements in the development of application, does not need to dynamically apply for the authority by a user, is effective and reliable, and more conveniently obtains the equipment id corresponding to the current system version of the user through the requirements of different versions on the equipment authority on the basis of the system version number; the method can be applied to scenes with high safety requirements after understanding the generation process.
Description
Technical Field
The invention relates to the technical field of digital information transmission, such as telegraph communication, in particular to a hybrid identification method for unique identification of Android equipment.
Background
In the development of the Android system, the requirement for obtaining the unique identifier of the device is often met, and the main purpose is to bind a security account and the device, accurately issue data or perform data statistical analysis, and to count the number of devices logged by a user and daily activities.
In order to obtain the unique identification of a device, a previously common way is to obtain the device _ id of the current device, but this way has some problems:
(1) acquiring device _ id of the current equipment requires permission, which cannot be acquired at all in many times, and particularly after Android6.0 is updated, many domestic ROMs can modify related permission in system setting, so that an application program is prohibited from acquiring the device _ id;
(2) after Android Q, only the application signed by the system is allowed to obtain device _ id; the Android Q starts to add the right READ _ PRIVILEGED _ PHONE _ STATE and delete the READ _ PHONE _ STATE, the application must have the READ _ PRIVILEGED _ PHONE _ STATE to obtain the device _ id, but the normal application of the right cannot obtain the device _ id, the right is only opened to the system-level application, if the application does not have the right but tries to obtain the identifiers, different results occur according to different application target versions:
when the target version of the application is Android Q (targetSdkVersion = Q), a SecurityException is thrown, which is a runtime exception, and causes the application to crash;
the target version of the application is Android 9.0 or lower (targetSdkVersion < Q), if the application has READ _ PHONE _ STATE permission, 'null' or placeholder data is returned, such as 'unsewn', otherwise, SecurityException is thrown.
For the above problems, the storage using UUID and SharePreference or SD card storage is common in the prior art, and the two solutions have the disadvantages:
the former will be deleted with the APP, i.e., the APP is reinstalled and the DeviceId value will change;
the latter requires user authorization, in most use cases hardware identifiers such as ssaid (Android id) and IMEI can be avoided without limiting the required functionality, whereas from Android 10 the application must be a device or profile owner application, with special operator permissions, or with READ PRIVILEGED _ PHONE _ STATE privileges to access the non-resettable device identifier.
In the prior art, an android _ id is used for identification, but the android _ id is reset after the device is booted, that is, different devices may generate the same android _ id.
Disclosure of Invention
The invention solves the problems in the prior art and provides an optimized hybrid identification method for the unique identification of the Android device.
The technical scheme adopted by the invention is that a hybrid identification method of the unique identification of the Android equipment comprises the following steps:
step 1: detecting the starting of App; acquiring a system version number of the current Android device;
step 2: if the system version number is not lower than Android6.0, performing the next step, otherwise, attempting to acquire the unique equipment identifier, if the unique equipment identifier is successful, storing the unique equipment identifier, otherwise, generating a universal code, and ending;
and step 3: if the system version number does not meet the requirement that the system version number is larger than or equal to Android6.0 and smaller than Android 10.0, performing the next step, otherwise, requesting authorization; if the unique equipment identifier is successfully acquired after authorization, the unique equipment identifier is stored, otherwise, the next step is carried out;
and 4, step 4: and acquiring Android _ id through a system API, and identifying and storing the unique equipment identifier of the current Android equipment based on the Android _ id.
Preferably, in the step 2, the universal code is generated locally and is encrypted and written into a plurality of positions of the SD card.
Preferably, in step 3, the authorization is to inquire the right of READ _ PHONE _ STATE, if the device _ id is obtained, the success is achieved, otherwise, step 4 is performed.
Preferably, in the step 4, whether the android _ id is empty or not is judged, if not, the android _ id is stored locally for global use, otherwise, a universal code is generated locally, and the process is ended.
Preferably, the universal code encryption is written in several positions of the SD card.
Preferably, the head of the universal code is provided with a universal code identification.
The invention relates to an optimized hybrid identification method of unique identification of Android equipment.
The invention is very integrated for the hybrid method for obtaining the unique identification code, can meet most requirements in the development of application, does not need to dynamically apply for the authority by a user, is effective and reliable, and more conveniently obtains the equipment id corresponding to the current system version of the user through the requirements of different versions on the equipment authority on the basis of the system version number; the method can be applied to scenes with high safety requirements after understanding the generation process.
Drawings
FIG. 1 is a flow chart of the method of the present invention.
Detailed Description
The present invention is described in further detail with reference to the following examples, but the scope of the present invention is not limited thereto.
The invention relates to a hybrid identification method of unique identification of Android equipment, which effectively solves the problems that in the prior art,
(1) when only using DEVICE _ ID, it is required to pass
getSystemservice (context. Telephony _ SERVICE). getDeviceId () acquisition, but READ _ PHONE _ STATE must be applied after Andriod 6.0, and this acquired value is not reliable in different vendors and devices;
(2) the MAC address is the MAC address of the wireless network card, and requires an ACCESS _ WIFI _ STATE authority, and the value cannot be obtained in many cases, and the MAC address is not very reliable;
(3) ANDROID _ ID is a 64-bit number that the system generates when a new device is first started or factory reset, and this value is now (after ANDROID 4.0) very reliable, but there is still a BUG for a custom system from an individual vendor, causing this value to be returned to null
To a problem of (a).
As shown in fig. 1, the method comprises the steps of:
step 1: detecting the starting of App; acquiring a system version number of the current Android device;
step 2: if the system version number is not lower than Android6.0, performing the next step, otherwise, attempting to acquire the unique equipment identifier, if the unique equipment identifier is successful, storing the unique equipment identifier, otherwise, generating a universal code, and ending;
in the step 2, the universal code is generated locally and is encrypted and written into a plurality of positions of the SD card.
In the invention, when the App is started, the version number of the current system is firstly acquired, and if the system version number is lower than Android6.0, the Android deviceId which is the unique identifier of the equipment can be directly acquired;
when the acquisition is successful, the general code UUID is generated locally and is encrypted and written into a plurality of positions of the SD card.
And step 3: if the system version number does not meet the requirement that the system version number is larger than or equal to Android6.0 and smaller than Android 10.0, performing the next step, otherwise, requesting authorization; if the unique equipment identifier is successfully acquired after authorization, the unique equipment identifier is stored, otherwise, the next step is carried out;
in the step 3, the authorization is to inquire the READ _ PHONE _ STATE authority, if the device _ id is obtained, the success is achieved, otherwise, the step 4 is performed.
In the invention, the step 3 is triggered by the system version number not lower than Android 6.0.
In the invention, when the Android system version is more than or equal to 6.0 and less than 10.0, the READ _ PHONE _ STATE authority is inquired, and the device _ id is authorized to be acquired;
when the acquisition is successful, the data is saved, generally, encryption is needed, and when the acquisition fails, step 4 is performed.
And 4, step 4: and acquiring Android _ id through a system API, and identifying and storing the unique equipment identifier of the current Android equipment based on the Android _ id.
In the step 4, whether the android _ id is empty or not is judged, if not, the android _ id is stored locally for global use, otherwise, a universal code is generated locally, and the operation is finished.
In the invention, step 4 is triggered by that the system version number is greater than or equal to 10 or the device _ id is null in the state that the system version number is greater than or equal to 6.0 and less than 10.0.
In the invention, the android _ id is acquired through a system API, the android _ id is not null and is stored locally for global use, and if the android _ id is null, the universal coding UUID is locally generated.
In summary, when the APP obtains the unique identifier of the device, the unique identifier is first obtained from the configuration file of the APP, and if the unique identifier does not exist, the unique identifier is read from the memory card, and if the unique identifier does not exist, the unique identifier is regenerated.
The universal coding encryption is written into a plurality of positions of the SD card.
The head of the universal code is provided with a universal code mark.
In the invention, the universal code is written into a plurality of positions of the SD card after being encrypted, so that the error deletion is prevented, the unique identifier of the equipment cannot be easily lost when the App is cleared of information or unloaded and reloaded, and the uniqueness is ensured; in this process, encryption is a technique that can be easily handled by those skilled in the art, and can be implemented by various encryption means.
In the invention, the head of the universal code is provided with a universal code identifier, namely a UUID identifier, which is convenient for identification.
The method and the device directly acquire the system version number of the current Android device after detecting that the App is started, set different processing nodes for the system version number, and acquire the unique identifier of the device based on different system version numbers.
The invention is very integrated for the hybrid method for obtaining the unique identification code, can meet most requirements in the development of application, does not need to dynamically apply for the authority by a user, is effective and reliable, and more conveniently obtains the equipment id corresponding to the current system version of the user through the requirements of different versions on the equipment authority on the basis of the system version number; the method can be applied to scenes with high safety requirements after understanding the generation process.
Claims (6)
1. A hybrid identification method of unique identification of Android equipment is characterized by comprising the following steps: the method comprises the following steps:
step 1: detecting the starting of App; acquiring a system version number of the current Android device;
step 2: if the system version number is not lower than Android6.0, performing the next step, otherwise, attempting to acquire the unique equipment identifier, if the unique equipment identifier is successful, storing the unique equipment identifier, otherwise, generating a universal code, and ending;
and step 3: if the system version number does not meet the requirement that the system version number is larger than or equal to Android6.0 and smaller than Android 10.0, performing the next step, otherwise, requesting authorization; if the unique equipment identifier is successfully acquired after authorization, the unique equipment identifier is stored, otherwise, the next step is carried out;
and 4, step 4: and acquiring Android _ id through a system API, and identifying and storing the unique equipment identifier of the current Android equipment based on the Android _ id.
2. The hybrid identification method for the unique identification of the Android device according to claim 1, characterized in that: in the step 2, the universal code is generated locally and is encrypted and written into a plurality of positions of the SD card.
3. The hybrid identification method for the unique identification of the Android device according to claim 1, characterized in that: in the step 3, the authorization is to inquire the READ _ PHONE _ STATE authority, if the device _ id is obtained, the success is achieved, otherwise, the step 4 is performed.
4. The hybrid identification method for the unique identification of the Android device according to claim 1, characterized in that: in the step 4, whether the android _ id is empty or not is judged, if not, the android _ id is stored locally for global use, otherwise, a universal code is generated locally, and the operation is finished.
5. The hybrid identification method for the unique identification of the Android device according to claim 4, characterized in that: the universal coding encryption is written into a plurality of positions of the SD card.
6. The hybrid identification method for the unique identification of the Android device according to claim 1, 2, 4 or 5, wherein: the head of the universal code is provided with a universal code mark.
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| CN202011028065.9A CN111931254A (en) | 2020-09-26 | 2020-09-26 | Hybrid identification method for unique identification of Android device |
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| CN112507291A (en) * | 2020-11-18 | 2021-03-16 | 北京深思数盾科技股份有限公司 | Method and device for generating unique identifier of Android device |
| CN115687367A (en) * | 2023-01-04 | 2023-02-03 | 成都精灵云科技有限公司 | ID generation method and system based on ETCD key value version number |
| CN116702163A (en) * | 2022-09-27 | 2023-09-05 | 荣耀终端有限公司 | Authority management method and terminal equipment |
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