CN104113540B - Towards the anti-COPY systems of digital music of Android platform - Google Patents
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- CN104113540B CN104113540B CN201410333750.0A CN201410333750A CN104113540B CN 104113540 B CN104113540 B CN 104113540B CN 201410333750 A CN201410333750 A CN 201410333750A CN 104113540 B CN104113540 B CN 104113540B
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Abstract
The invention discloses a kind of anti-COPY systems of digital music for being used to move Android platform equipment, including three client, server, secure communication modules.Two-way authentication is carried out by 4-Way Handshake between mobile terminal and server, mobile terminal obtains lawful authority after certification success, and is associated with its unique IMEI string number with other data-messages, as client and effective voucher of server interaction.In server end, system establishes MP3 musical databases, and unified management is carried out to digital music resource, and MP3 resources are protected using the anti-COPY technologies of identity-based certification, generates interim, the entitled SMP3 of suffix file.In the SMP3 resources that client, user are sent by safe lane the reception server, client is authenticated deciding whether that decoding, which is decrypted, to play again when playing SMP3 resources to user validation.The identity information of client is downloaded due to containing in SMP3 files, ensure that MP3 resources are not replicated and pirate.
Description
Technical field
The present invention relates to digital music safety system field, specifically a kind of digital music towards Android platform is prevented
COPY systems.
Background technology
With the rapid development of internet and mobile technology, the acquisition of digital music becomes increasingly to facilitate, mobile device
It is increasingly becoming the capital equipment that people use digital music.Digital music is very easy to be replicated, propagate and distort, to number
The publication protection of word tone pleasure brings very big challenge.
A series of problems, such as copyright protection and legitimate authentication of digital music, causes many rightful copyright owners light
Easy disclosure publishes the works of oneself, and this is from the propagation and popularization for largely hindering digital music.In addition, many is not
The digital music authorized through rightful copyright owners is used for illegal commercial operation by some Internet Service Providers, to legal version
Power owner brings very big impairment of benefit.
In recent years, correlated digital music copyright protection technology and patent, all without truly realize copyright protect
Shield.Digital music resource can not be prevented to be copied, propagate, fail to provide a kind of preferable solution to copyright problem.
The content of the invention is it is an object of the invention to provide a kind of anti-COPY systems of digital music towards Android platform, with solution
Certainly Copyright of Digital Music protection problem.
In order to achieve the above object, the technical solution adopted in the present invention is：
Towards the anti-COPY systems of digital music of Android platform, it is characterised in that：Including server module, secure communication mould
Block, client modules, wherein server module are managed collectively to MP3 music sources, and at the anti-COPY of identity-based certification
Reason, secure communication module communication connection server module, client modules, and server module and client modules are carried out double
To certification, client modules carry out legitimacy identification to user identity and decide whether to decrypt and decode to play MP3 music sources.
The anti-COPY systems of the described digital music towards Android platform, it is characterised in that：The MP3 music sources refer to
The audio file stored using MP3 coded systems, unified management refer to the digital MP3 music sources of system offer by back-stage management
Member's United Dispatching uploads, and avoiding terminal user from uploading the file of oneself causes redundancy, damage or even the infringement of file, authentication
Refer to server module according to the unique IMEI strings number obtained from subscription client to carry out anti-copy processing to MP3.
The anti-COPY systems of the described digital music towards Android platform, it is characterised in that：The server module is based on
The anti-COPY processing procedures of authentication are as follows：
Every frame frame head of mp3 file is encrypted, encrypted using RC4 AESs, the IMEI string conducts of user add
The key of close algorithm；
Using the MD5 values of user IMEI strings number as watermark, each frame is embedded watermark data into using self-defined random function
Frame data part, embedded location are the randomly generated value of random function；
Treated mp3 file is renamed, the entitled smp3 of generation suffix file.
The anti-COPY systems of the described digital music towards Android platform, it is characterised in that：The process of watermark insertion is as follows：
A random value is obtained according to random number functions, in the position insertion IMEI strings of this value of the frame primary data segment interval of the frames of MP3 mono-
Number one of MD5 values, then circulate and every frame be embedded in.
The anti-COPY systems of the described digital music towards Android platform, it is characterised in that：The secure communication module pair
The process that server module and client modules carry out two-way authentication is as follows：
Client sends connection request message to server module, selects linear orthomorphism AES, client modules exist
After message is sent, start Retransmission timeout mechanism at once；
After server module receives message, the plaintext after reverse linear orthomorphism is decrypted is carried out to message, by this in plain text
Message format matching is carried out, format error directly abandons message, and message format is correct, then produces random number using random function
It is sent to client modules, initiates challenge, while after random number secret algorithm is handled, as a session key；
Client modules receive the challenge that server module is sent, and challenge is also handled with secret algorithm, obtains this
As a result stored as a session key.This result is subjected to rsa encryption with the public key of server module again, is sent to clothes
Business device module；
Server module receives the response message that client modules are given, and this message is decrypted with the private key of oneself.Will
To decrypted result be compared with the session key stored, compare error, directly abandon result, terminate process, compare successfully,
It is believable to think client modules, after session key is handled with MD5 algorithms, is sent to client modules；
Client modules receive the message of server module transmission, by the session key of oneself MD5 algorithm process, with clothes
The message that business device module is sent is compared, and compares error, abandons result, terminates process, compares successfully, it is believed that server module
It is believable.
The anti-COPY systems of the described digital music towards Android platform, it is characterised in that：The client modules to
The method that family identity carries out legitimacy identification is that the IMEI strings number of user are obtained in client, generates MD5 values, and in digital music
Embedded watermark is compared.
The anti-COPY systems of the described digital music towards Android platform, it is characterised in that：Client modules decrypt MP3 sounds
Happy resource refers to the process of restore smp3 files per frame frame head, is decrypted using RC4 algorithms, decruption key is obtained from user
IMEI strings number；
Client modules decoding MP3 music sources refer to carry out audio data frame extraction to smp3 files, and are sent into decoding
Decoding generation PCM data stream is carried out in device, and the PCM data of generation is streamed and directly played out into hardware device, is not produced
Temporary file.
The anti-COPY systems of the described digital music towards Android platform, it is characterised in that：When decoding MP3 music sources,
Audio data frame extraction process be：
Frame length, and frame master data length are obtained according to frame originating point information, data are obtained since frame head, runs into and is randomly-embedded
The position of watermark then skips over this position, all initial data until obtaining a frame.
The present invention has following major advantage compared with prior art：
First, using key of the user mobile phone IMEI strings number as authentication.Ensure that validated user can enjoy legal copy
High tone quality music sources, and IMEI string number as digital watermark embedding into MP3 resources so that local music resource is just
Broadcasting can not be correctly decoded by copying at last on the mobile phone of other users.Legal terminal user can effectively be suppressed and play the part of upload
Person, the role of disseminator, Copyright of Digital Music and the legitimate rights and interests of music author are protected conscientiously；
Second, when client plays out request for music, client just carries out the decryption of MP3 resources, extracts watermark
Operation.And broadcasting is decoded simultaneously during decryption, the temporary file that generation decryption is not completed.So ensure user's sheet
MP3 original resource files are not present in ground, protect the safety of MP3 resources, prevent copy propagation and the piracy of MP3 resources；
3rd, server and client side's 4-Way Handshake agreement, both sides be mutually authenticated it is credible, take ciphertext transmit and establish can
Believe safe lane, ensure information exchange and transmission safety.
In a word, the present invention provides safe session using the safe lane of self-defined message form and 4-Way Handshake, adopts
With identity-based signature and the anti-COPY technologies of certification, it is ensured that digital music will not be copied, propagate, be pirate, realize one
Towards the anti-COPY systems of digital music of Android platform, preferably solves copyright problem.
Brief description of the drawings
Fig. 1 is the system architecture diagram in the embodiment of the present invention.
Fig. 2 is the message format definition figure in the embodiment of the present invention.
Fig. 3 is the anti-COPY techniqueflow charts of server in the embodiment of the present invention.
Fig. 4 is that the client in the embodiment of the present invention decrypts decoding process figure.
Embodiment
It is shown in Figure 1, towards the anti-COPY systems of digital music of Android platform, including server module, secure communication
Module, client modules, wherein server module are managed collectively to MP3 music sources, and the anti-COPY of identity-based certification
Processing, secure communication module communication connection server module, client modules, and server module and client modules are carried out
Two-way authentication, client modules carry out legitimacy identification to user identity and decide whether to decrypt and decode to play MP3 music money
Source.
MP3 music sources refer to the audio file stored using MP3 coded systems, and unified management refers to the number that system provides
Word MP3 music sources are uploaded by management staff's United Dispatching, and avoiding terminal user from uploading the file of oneself causes the superfluous of file
Remaining, damage is even encroached right, authentication refer to server module according to unique IMEI for being obtained from subscription client go here and there number come pair
MP3 carries out anti-copy processing.
The anti-COPY processing procedures of server module identity-based certification are as follows：
Every frame frame head of mp3 file is encrypted, encrypted using RC4 AESs, the IMEI string conducts of user add
The key of close algorithm；
Using the MD5 values of user IMEI strings number as watermark, each frame is embedded watermark data into using self-defined random function
Frame data part, embedded location are the randomly generated value of random function；
Treated mp3 file is renamed, the entitled smp3 of generation suffix file.
The process of watermark insertion is as follows：A random value is obtained according to random number functions, in the frame primary data segment of the frames of MP3 mono-
One of the MD5 values of the position insertion IMEI strings number of this value of interval, then circulates and every frame is embedded in.
The process that secure communication module carries out two-way authentication to server module and client modules is as follows：
Client sends connection request message to server module, selects linear orthomorphism AES, client modules exist
After message is sent, start Retransmission timeout mechanism at once；
After server module receives message, the plaintext after reverse linear orthomorphism is decrypted is carried out to message, by this in plain text
Message format matching is carried out, format error directly abandons message, and message format is correct, then produces random number using random function
It is sent to client modules, initiates challenge, while after random number secret algorithm is handled, as a session key；
Client modules receive the challenge that server module is sent, and challenge is also handled with secret algorithm, obtains this
As a result stored as a session key.This result is subjected to rsa encryption with the public key of server module again, is sent to clothes
Business device module；
Server module receives the response message that client modules are given, and this message is decrypted with the private key of oneself.Will
To decrypted result be compared with the session key stored, compare error, directly abandon result, terminate process, compare successfully,
It is believable to think client modules, after session key is handled with MD5 algorithms, is sent to client modules；
Client modules receive the message of server module transmission, by the session key of oneself MD5 algorithm process, with clothes
The message that business device module is sent is compared, and compares error, abandons result, terminates process, compares successfully, it is believed that server module
It is believable.
The method that client modules carry out legitimacy identification to user identity is that the IMEI strings number of user are obtained in client,
MD5 values are generated, are compared with watermark embedded in digital music.
Client modules decryption MP3 music sources refer to the process of restore smp3 files per frame frame head, utilize RC4 algorithms
Decryption, decruption key are the IMEI strings number obtained from user；
Client modules decoding MP3 music sources refer to carry out audio data frame extraction to smp3 files, and are sent into decoding
Decoding generation PCM data stream is carried out in device, and the PCM data of generation is streamed and directly played out into hardware device, is not produced
Temporary file.
When decoding MP3 music sources, the process of audio data frame extraction is：
Frame length, and frame master data length are obtained according to frame originating point information, data are obtained since frame head, runs into and is randomly-embedded
The position of watermark then skips over this position, all initial data until obtaining a frame.
Below in conjunction with specific embodiments and the drawings, the present invention is further elaborated.
As shown in figure 1, technical scheme is used by the system of the present invention：A kind of digital music based on Android platform is prevented
COPY systems, including：Server module, safe lane module, client modules；
Server module, including copyright management, resource file management, data base administration, establish the several parts of security mechanism.
Server realize function be：Anti- COPY technical finesses are carried out to corresponding MP3 resources, generate .smp3 temporary files；Resource text
Part management, it disclosure satisfy that multiple users download the request of same song, copy out multiple interim copies, avoid resource contention；
Database stores information is managed collectively；Certain security mechanism is provided, takes three-tier architecture pattern and Two-way Chain to mark
The measure of user profile and timestamp is recorded, prevents DDOS, information from the third party attack such as distorting, forging, ensures server stably work
Make all kinds of requests that simultaneously corresponding legitimate client is sent in time；
Safe lane module, the communication protocol based on socket communication infrastructures and SSL safe socket characters, takes 4-Way Handshake
Mechanism ensures that server and client both sides are credible；
Client modules, server is sent data messages to using customized message format.Design authentication, decryption
The anti-COP0Y technologies that three modules realize client are played with watermark extracting, decoding, solve Copyright Protection.
As shown in Fig. 2 the present invention relates to message format definition：It is 4 types by message definition, represents difference respectively
Request, ensure client and server between communicate smoothly, safety progress.
Flag bit is 1, then illustrates that user logs in or succeeded in registration；
Flag bit is 2, then illustrates that user selects to download title, the singer informations of song；
Flag bit is 3, then illustrates that user has paid expense, turn into validated user；
Flag bit is 4, then illustrates that user sends connection server request.
As shown in figure 3, the technical scheme that the present invention uses on the server：The anti-COPY technologies of identity-based certification,
Process is as follows：
Step 1：Server obtains user IMEI strings number, and inquiry database information identifies whether be validated user.It is assumed that
Validated user, the then song title downloaded as needed search for local original MP3 resources；
Step 2：Successful MP3 source materials will be searched for and proceed by anti-COPY technical finesses.Frame format based on MP3,
The position of the frame of MP3 resources first is determined according to the length that 4 bytes can calculate ID3V2 before ID3V2, according to the frame of the first frame
The information that head includes, obtain arrival rate (bitrate), sample frequency (sampling_freq), frame length regulation（padding）Two
Ary codes.Table look-up corresponding to binary code implication, according to formula calculate frame length；
Step 3：The frame-handling function designed is called, carries out safe handling.The function that this function is realized：By each frame point
For the processing to frame head and to frame data part.The frame head by each frame is taken to be encrypted with RC4, the IMEI strings number of user are made
For the key of AES（Key）.User IMEI strings number are produced into watermark using MD5 algorithms, will using self-defined random function
Watermark is embedded into frame data part.To each frame circulate operation, after the completion of all frame processing, with ID3V2（Include work
The information such as person, composition, special edition）Combination forms the temporary file that .smp3 is suffix；
Step 4：.smp3 temporary file name is according to user IMEI strings number and the combination of song title, by this temporary file
Client is sent to by safe lane.
The purpose of RC4 encryptions is to carry out authenticating user identification.Only the IMEI of validated user could decrypt frame head
Out, follow-up decryption processing is carried out.The purpose of the insertion of watermark is the length by lengthening each frame, destroys the complete of frame
Property.Avoid disabled user from replacing frame head, obtain MP3 source materials.So far, server completes anti-COPY technologies.
As shown in figure 4, the technical scheme that the present invention takes on the client：The anti-COPY technologies of identity-based certification,
It is characterised in that it includes following steps：
Step 1：User IMEI strings number are first obtained, attempt that operation is decrypted to the .smp3 files received with this string number.
If successful decryption, carry out subsequent step.If unsuccessful, prompt this song of user protected by copyright, prevent user from playing；
Step 2：It is assumed that certification is validated user, then the position of the frame of .smp3 resource files first is first found, in this position,
RC4 algorithm decryption is carried out to the frame head of the first frame using user IMEI strings number.Then random letter is pressed to the frame data section of the first frame
Numerical digit puts the MD5 values i.e. watermark for extracting the IMEI of user.
Step 3：The user IMEI locally obtained strings number are subjected to a MD5 algorithm process, result after processing and are extracted
Watermark progress is right.If to success, subsequent step is carried out.If unsuccessful, prompt this song of user protected by copyright,
User is prevented to play；
Step 4：This decryption, the extraction successful frame of watermark are sent in the buffering area of decoder.The processing side of subsequent frame
Formula is caused with above-mentioned step 1, and after being sent to buffering area number of frames and meeting certain amount, decoder is started working, and decoding plays song
It is bent.
The decryption of a frame frame is carried out to the smp3 files of encryption in client, and the data of each frame are sent into decoder
It is continuous to play, ensure that MP3 source materials are locally not present in user.The safety of MP3 resources is protected, prevents answering for MP3 resources
System is propagated and piracy.So far, client completes anti-COPY technologies.
Towards in the anti-COPY systems of digital music of Android platform, server end embedded in the present invention in original MP3
User's unique identification information (user mobile phone IMEI string number) of client, ensure that MP3 songs can only user herein client
Mobile phone-downloaded and broadcasting, even if other users have obtained local song resource by other approach, due to that can not provide correctly
IMEI strings number, can not be decrypted and use to the .smp3 resource files after processing, effectively prevent any biography of MP3 resources
Broadcast, so as to protect the right of validated user and Copyright of Digital Music.
Although the present invention preferred embodiments be disclosed directly below, be not intended to limit the scope of the present invention, therefore, it is all
Any modification, equivalent substitution and improvements made within the spirit and principles in the present invention etc., it should be included in the protection model of the present invention
Within enclosing.
Claims (4)
1. towards the anti-COPY systems of digital music of Android platform, it is characterised in that：Including server module, secure communication mould
Block, client modules, wherein server module are managed collectively to MP3 music sources, and at the anti-COPY of identity-based certification
Reason, secure communication module communication connection server module, client modules, and server module and client modules are carried out double
To certification, client modules carry out legitimacy identification to user identity and decide whether to decrypt and decode to play MP3 music sources；
The anti-COPY processing procedures of server module identity-based certification are as follows：
Every frame frame head of mp3 file is encrypted, encrypted using RC4 AESs, the IMEI strings number of user are calculated as encryption
The key of method；
Using the MD5 values of user IMEI strings number as watermark, the frame number of each frame is embedded watermark data into using self-defined random function
According to part, embedded location is the randomly generated value of random function；
Treated mp3 file is renamed, the entitled smp3 of generation suffix file；
The process of watermark insertion is as follows：A random value is obtained according to random number functions, in the frame primary data segment interval of the frames of MP3 mono-
One of the MD5 values of the position insertion IMEI strings number of this value, then circulates and every frame is embedded in；
The method that the client modules carry out legitimacy identification to user identity is that the IMEI strings number of user are obtained in client,
MD5 values are generated, are compared with watermark embedded in digital music；
Client modules decryption MP3 music sources refer to the process of restore smp3 files per frame frame head, utilize RC4 algorithm solutions
Close, decruption key is the IMEI strings number obtained from user；
Client modules decoding MP3 music sources refer to carry out audio data frame extraction to smp3 files, and are sent into decoder
Decoding generation PCM data stream is carried out, and the PCM data of generation is streamed and directly played out into hardware device, is not produced interim
File.
2. the anti-COPY systems of the digital music according to claim 1 towards Android platform, it is characterised in that：The MP3
Music sources refer to the audio file stored using MP3 coded systems, and unified management refers to the digital MP3 music money that system provides
Source is uploaded by management staff's United Dispatching, and avoiding terminal user from uploading the file of oneself causes the redundancy of file, damage even
Infringement, authentication refer to server module according to the unique IMEI strings number obtained from subscription client to prevent MP3
Copy processing.
3. the anti-COPY systems of the digital music according to claim 1 towards Android platform, it is characterised in that：The safety
The process that communication module carries out two-way authentication to server module and client modules is as follows：
Client is sent connection request message to server module, and message is encrypted using linear orthomorphism AES,
Client modules start Retransmission timeout mechanism at once after message transmission；
After server module receives message, the plaintext after reverse linear orthomorphism is decrypted is carried out to message, this is carried out in plain text
Message format matches, if format error directly abandons message, if form is correct, produces random number using random function and sends
To client modules, challenge is initiated, while after random number secret algorithm is handled, as a session key；
Client modules receive the challenge that server module is sent, and challenge is also handled with secret algorithm, obtains this result
Stored as a session key；
This result is subjected to rsa encryption with the public key of server module again, is sent to server module；
Server module receives the response message that client modules are given, and this message is decrypted with the private key of oneself；
Obtained decrypted result is compared with the session key stored, error is compared, directly abandons result, terminate process,
Compare successfully, it is believed that client modules are believable, after session key is handled with MD5 algorithms, are sent to client modules；
Client modules receive the message of server module transmission, by the session key of oneself MD5 algorithm process, with server
The message that module is sent is compared, and compares error, abandons result, terminates process, compares successfully, it is believed that server module is can
Letter.
4. the anti-COPY systems of the digital music according to claim 1 towards Android platform, it is characterised in that：Decode MP3
During music sources, the process of audio data frame extraction is：
Frame length, and frame master data length are obtained according to frame originating point information, data are obtained since frame head, runs into and is randomly-embedded watermark
Position then skip over this position, until obtain a frame all initial data.
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| CN105657004A (en) * | 2015-12-29 | 2016-06-08 | 大连楼兰科技股份有限公司 | Legitimate music management method and device of Internet of vehicles network radio station |
| CN105844117A (en) * | 2016-04-06 | 2016-08-10 | 天津飞跃无限科技有限公司 | Music copyright authorization management platform based on crowd funding and application of management platform |
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