CN108306732A - A kind of random digit generation method, relevant device and system - Google Patents
A kind of random digit generation method, relevant device and system Download PDFInfo
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- CN108306732A CN108306732A CN201810358844.1A CN201810358844A CN108306732A CN 108306732 A CN108306732 A CN 108306732A CN 201810358844 A CN201810358844 A CN 201810358844A CN 108306732 A CN108306732 A CN 108306732A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
- H04L9/0869—Generation of secret information including derivation or calculation of cryptographic keys or passwords involving random numbers or seeds
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
Abstract
The invention discloses a kind of random digit generation method, relevant device and device, client sends Random Entropy and obtains request to server-side, and receives the entropy data corresponding with Random Entropy request that the server-side is sent；Client obtains initial entropy source data, and the entropy data that the initial entropy source data and the server-side are sent are carried out mixed processing, generate random number, wherein the initial entropy source data are the weak entropy source data in local that client obtains.In the case of solving the not enough entropy sources of client through the invention, then the entropy data that can be sent by server-side are handled using the weak entropy source of itself as salt figure, obtain real random number, and then can generate the random number of high quality.
Description
Technical field
The present invention relates to art of cryptography, more particularly to a kind of random digit generation method, relevant device and system.
Background technology
With the continuous development of computer technology and Internet technology, information that people store in computer and networks
It is more and more, it is more and more important.Therefore just to Information Security, more stringent requirements are proposed.Random number is contemporary cryptology and close
The basis of code technology, in modern cryptographic technique, key generation, digital signature, authentication and numerous cipher protocols all need
Use random number.Generating random number is the basic process in any computer system.In particular, the safety of encryption system depends on
It is with good random number source.The generation of random number generally includes two different phases：Entropy acquires and generating random number.Entropy
It is the uncertain information for attacker, and the entropy is used as the certainty pseudo-random number generator usually using encryption technology
Seed.
In Internet of Things field, there are many internet-of-things terminal equipment, intelligent terminal or PC terminals, because it is hard
Part limitation can not obtain enough random number entropys, so the random number of high quality can not be generated, cannot especially meet as close
The quality requirement of the random number of key.
Invention content
It is directed to the above problem, a kind of random digit generation method of present invention offer, relevant device and system are solved and set
The random number of high quality can not be led to the problem of in the case of standby not enough entropy sources.
To achieve the goals above, the present invention provides following technical solutions：
A kind of random digit generation method, this method are applied to client, including：
It sends Random Entropy and obtains request to server-side, and receive the corresponding with Random Entropy request of the server-side transmission
Entropy data；
Initial entropy source data are obtained, the initial entropy source data are carried out mixing place with the entropy data that the server-side is sent
Reason generates random number, wherein the initial entropy source data are the weak entropy source data in local that client obtains.
Preferably, further include：
When the entropy data that the server-side is sent are encryption data, the entropy data sent to the server-side are decrypted
Processing, the entropy data after being decrypted.
Preferably, the entropy data sent to the server-side are decrypted, the entropy data after being decrypted, packet
It includes：
The entropy data that the server-side is sent are decrypted by the private key of client, and verifies the server-side and sends
Entropy data digital signature, the entropy data after being decrypted.
A kind of random digit generation method, this method are applied to server-side, including：
It receives the Random Entropy that client is sent and obtains request；
Obtaining request call according to the Random Entropy specifies entropy source to get entropy data；
The entropy data are sent to the client, wherein the client generates random number according to the entropy data.
Preferably, it is described the entropy data are sent to the client before, further include：
The public key of the client is obtained according to the mark of the client；
The entropy data are digitally signed, and the entropy data after signature are encrypted by the public key, are obtained
Encrypted entropy data.
A kind of client, including：
Sending module obtains request to server-side for sending Random Entropy, and receive that the server-side sends with it is described
Random Entropy asks corresponding entropy data；
Generation module, for obtaining initial entropy source data, by the entropy of the initial entropy source data and server-side transmission
Data carry out mixed processing, generate random number, wherein the initial entropy source data are the weak entropy source number in local that client obtains
According to.
Preferably, further include：
Deciphering module, for when the entropy data that the server-side is sent are encryption data, being sent to the server-side
Entropy data are decrypted, the entropy data after being decrypted.
Preferably, the deciphering module includes：
Decryption unit is decrypted the entropy data that the server-side is sent for the private key by client, and verifies
The digital signature for the entropy data that the server-side is sent, the entropy data after being decrypted.
A kind of server-side, including：
Request receiving module, the Random Entropy for receiving client transmission obtain request；
Calling module specifies entropy source to get entropy data for obtaining request call according to the Random Entropy；
Data transmission blocks, for the entropy data to be sent to the client, wherein the client is according to
Entropy data generate random number.
Preferably, further include：
Public key acquisition module, the public key for obtaining the client according to the mark of the client；
Encrypting module, for being digitally signed to the entropy data, and by the public key to the entropy data after signature
It is encrypted, obtains encrypted entropy data.
A kind of random-number-generating system, including：Client described above and server-side described above.
Compared to the prior art, technical solution provided by the invention is asked by the Random Entropy acquisition of server-side reception client
Ask, corresponding entropy data be then sent to the client, the client receive after the entropy data with get
Local weak entropy source data carry out mixed processing, generate random number.Solves entropy source not enough in client in the prior art
In the case of, then the entropy data that can be sent by server-side are handled using the weak entropy source of itself as salt figure, obtain
Real random number, and then the random number of high quality can be generated.Therefore, it can largely improve through the invention mobile whole
It holds, the random number generation capability of cloud computing virtual machine, internet-of-things terminal equipment.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of flow diagram of random digit generation method provided in an embodiment of the present invention；
Fig. 2 is a kind of schematic diagram of hybrid algorithm provided in an embodiment of the present invention；
Fig. 3 is the flow diagram of another random digit generation method provided in an embodiment of the present invention；
Fig. 4 is a kind of schematic diagram of a scenario of multiple Random Entropy services provided in an embodiment of the present invention；
Fig. 5 is a kind of structural schematic diagram of client provided in an embodiment of the present invention；
Fig. 6 is a kind of structural schematic diagram of server-side provided in an embodiment of the present invention；
Fig. 7 is a kind of structural schematic diagram of random-number-generating system provided in an embodiment of the present invention；
Fig. 8 is a kind of data interaction schematic diagram of random-number-generating system provided in an embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Term " first " and " second " in description and claims of this specification and above-mentioned attached drawing etc. are to be used for area
Not different objects, rather than for describing specific sequence.In addition term " comprising " and " having " and their any deformations,
It is intended to cover and non-exclusive includes.Such as it contains the process of series of steps or unit, method, system, product or sets
It is standby not to be set in the step of having listed or unit, but the step of may include not listing or unit.
It is a kind of flow diagram of random digit generation method provided in an embodiment of the present invention referring to Fig. 1, this method can be with
Include the following steps：
S11, Random Entropy acquisition request is sent to server-side, and receive being asked with the Random Entropy for the server-side transmission
Corresponding entropy data；
S12, initial entropy source data are obtained, the entropy data that the initial entropy source data are sent with the server-side is mixed
Conjunction is handled, and generates random number, wherein the initial entropy source data are the weak entropy source data in local that client obtains.
When the random digit generation method is applied in client, the request that request is obtained Random Entropy by client is sent to clothes
Be engaged in end, then server-side call physics entropy source corresponding entropy data are sent to client.Client calculates itself weak entropy at this time
Source, the weak entropy source refer to client local hardware noise, the external environment uncertain information that sensor obtains, operating system and implement letter
Breath.After client receives the entropy data of server-side return, using local weak entropy source, place is mixed together with the entropy data of acquisition
Reason, generates real random number.
It is a kind of schematic diagram of hybrid algorithm provided in an embodiment of the present invention referring to Fig. 2, f () indicates that hybrid algorithm, x0 are
From the weak entropy source data of client, x1 is the entropy data from server-side, and the hybrid mode that may be used includes：
Out=x0 | x1；
Or out=H (x0 | x1), wherein hash algorithm may be used in H, is specifically as follows SHA256 SM3 algorithms
Deng.
In Fig. 2, g () indicates to generate the function of random number by entropy source, and different random number algorithms may be used, such as
DRBG, symmetric cryptographic algorithm such as AES, SM4 etc..Other information of the Otherinfo expressions from client, such as facility information,
Temporal information etc..
Based on the above technical solution, in another embodiment of the present invention, further include：
When the entropy data that the server-side is sent are encryption data, the entropy data sent to the server-side are decrypted
Processing, the entropy data after being decrypted.
Specifically：
The entropy data that the server-side is sent are decrypted by the private key of client, and verifies the server-side and sends
Entropy data digital signature, the entropy data after being decrypted.
I.e. when the entropy data that server-side is sent are encryption data, to be solved by the corresponding cipher mode of server-side
It is close, that is, if server-side has used the public key of client to be encrypted, corresponding client needs to be solved using private key
It is close, and verify whether digital signature is correct, if it is, the entropy data after being decrypted.
Client, to server-side application Random Entropy, is taken when needing using random number by the communication mechanism of safety
The entropy data at business end, and server-side entropy data are handled using the weak entropy source of itself as salt figure, it obtains really random
Number.It solves because client hardware limitation can not obtain enough random number entropys, and the random number of high quality can not be generated
Problem.
Referring to the flow diagram that Fig. 3 is another random digit generation method provided in an embodiment of the present invention, this method is answered
For server-side, may comprise steps of：
S21, the Random Entropy acquisition request that client is sent is received；
S22, entropy source is specified to get entropy data according to Random Entropy acquisition request call；
S23, the entropy data are sent to the client, wherein the client according to the entropy data generate with
Machine number.
Specifically, it is described the entropy data are sent to the client before, further include：
The public key of the client is obtained according to the mark of the client；
The entropy data are digitally signed, and the entropy data after signature are encrypted by the public key, are obtained
Encrypted entropy data.
After the Random Entropy that server-side receives client transmission obtains request, specified entropy source can be called to get entropy number
According to, and the specified entropy source is usually physics entropy source, that is, true random number, i.e. entropy data are generated using physical hardware noise source.
It is a kind of schematic diagram of a scenario of multiple Random Entropy services provided in an embodiment of the present invention to refer to Fig. 4, in the scene
Middle client sends Random Entropy to multiple server-sides by internet and obtains request, can receive multiple server-sides in this way and send
Entropy data, at this time using the service of multiple Random Entropies, when being mixed using mixed function f (), then form
For：
Out=f (x0, x1 ... xn)
Wherein, x0 indicates that local entropy data, x1 to xn indicate the entropy data from n Random Entropy services.
The technical solution of random digit generation method provided by the invention, the Random Entropy that client is received by server-side obtain
Then corresponding entropy data are sent to the client by request, the client receive after the entropy data with get
The weak entropy source data in local carry out mixed processing, generate random number.Solves entropy not enough in client in the prior art
In the case of source, then the entropy data that can be sent by server-side are handled using the weak entropy source of itself as salt figure, obtain
To real random number, and then the random number of high quality can be generated.Therefore, movement can be largely improved through the invention
The random number generation capability of terminal, cloud computing virtual machine, internet-of-things terminal equipment.
It is a kind of structural schematic diagram of client provided in an embodiment of the present invention referring to Fig. 5, which includes：
Sending module 11 obtains request to server-side for sending Random Entropy, and receive that the server-side sends with institute
It states Random Entropy and asks corresponding entropy data；
Generation module 12 sends the initial entropy source data and the server-side for obtaining initial entropy source data
Entropy data carry out mixed processing, generate random number, wherein the initial entropy source data are the weak entropy source number in local that client obtains
According to.
Optionally, further include：
Deciphering module, for when the entropy data that the server-side is sent are encryption data, being sent to the server-side
Entropy data are decrypted, the entropy data after being decrypted.
Optionally, the deciphering module includes：
Decryption unit is decrypted the entropy data that the server-side is sent for the private key by client, and verifies
The digital signature for the entropy data that the server-side is sent, the entropy data after being decrypted.
It is a kind of structural schematic diagram of server-side provided in an embodiment of the present invention referring to Fig. 6, which may include:
Request receiving module 21, the Random Entropy for receiving client transmission obtain request；
Calling module 22 specifies entropy source to get entropy data for obtaining request call according to the Random Entropy；
Data transmission blocks 23, for the entropy data to be sent to the client, wherein the client is according to institute
It states entropy data and generates random number.
Optionally, further include：
Public key acquisition module, the public key for obtaining the client according to the mark of the client；
Encrypting module, for being digitally signed to the entropy data, and by the public key to the entropy data after signature
It is encrypted, obtains encrypted entropy data.
Based on above-mentioned technical solution, the embodiment of the present invention additionally provides a kind of random-number-generating system, should referring to Fig. 7
System includes：Client 10 and server-side 20.
Specifically, by taking client connects the scene of single Random Entropy server-side as an example, when the client needs to generate one
When random number, interaction figure is as shown in figure 8, detailed process is：
Client sends Random Entropy request；
Server-side receives Random Entropy request, and entropy data are obtained from physics entropy source；
Server-side obtains client public key according to client identification；
Server-side signs to entropy data；
Server-side is encrypted the data in the entropy data after signature using client public key；
Encrypted entropy data after signature are returned to the client of request by server-side；
After client receives the entropy data of server-side transmission, decrypts the entropy data and that verification number therein is signed
Name；
Client obtains local weak entropy source data；
Client mixes local weak entropy source data and entropy data, generated from entropy data using random number algorithm with
Machine number.
Technical solution through the invention can generate high-quality in the case of client device not enough entropy sources
The random number of amount can largely improve the random number of mobile terminal, cloud computing virtual machine, internet-of-things terminal equipment in this way
The random number of generation ability, generation can be used as the key in symmetric cryptography and asymmetric cryptographic technique.
Meanwhile it using the weak entropy source of client as the salt figure for generating random number, can be carried in the basic entropy of server-side entropy source
For unpredictable and expected random number.Wherein, salt figure is directed to the process addition random data of cryptographic calculations, makes similarly mistake
Journey generates different results.Refer to the same entropy source data of server-side in the application scenarios of the present invention, it can be in different visitors
Family generates different random numbers in end ring border.
It is corresponding, timestamp, asymmetric close may be used in the transmittance process of entropy data in an embodiment of the present invention
Code algorithm and digital signature technology, ensure that the safety of entropy data transfer.
Therefore, technical solution provided in an embodiment of the present invention can be applied to provide Random Entropy service service software system and
Hardware device；Or run on the client software of intelligent mobile terminal and internet of things equipment.Each embodiment in this specification
It is described by the way of progressive, each embodiment focuses on the differences from other embodiments, each embodiment
Between identical similar portion just to refer each other.For the device disclosed in the embodiment, due to itself and side disclosed in embodiment
Method is corresponding, so description is fairly simple, reference may be made to the description of the method.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (11)
1. a kind of random digit generation method, which is characterized in that this method is applied to client, including：
It sends Random Entropy and obtains request to server-side, and receive the entropy corresponding with Random Entropy request that the server-side is sent
Data；
Initial entropy source data are obtained, the entropy data that the initial entropy source data and the server-side are sent are subjected to mixed processing,
Generate random number, wherein the initial entropy source data are the weak entropy source data in local that client obtains.
2. according to the method described in claim 1, it is characterized in that, further including：
When the entropy data that the server-side is sent are encryption data, place is decrypted in the entropy data sent to the server-side
Reason, the entropy data after being decrypted.
3. according to the method described in claim 2, it is characterized in that, the entropy data sent to the server-side are decrypted
Processing, the entropy data after being decrypted, including：
The entropy data that the server-side is sent are decrypted by the private key of client, and verify the entropy that the server-side is sent
The digital signature of data, the entropy data after being decrypted.
4. a kind of random digit generation method, which is characterized in that this method is applied to server-side, including：
It receives the Random Entropy that client is sent and obtains request；
Obtaining request call according to the Random Entropy specifies entropy source to get entropy data；
The entropy data are sent to the client, wherein the client generates random number according to the entropy data.
5. according to the method described in claim 4, it is characterized in that, it is described by the entropy data be sent to the client it
Before, further include：
The public key of the client is obtained according to the mark of the client；
The entropy data are digitally signed, and the entropy data after signature are encrypted by the public key, are encrypted
Entropy data afterwards.
6. a kind of client, which is characterized in that including：
Sending module obtains request to server-side for sending Random Entropy, and receive that the server-side sends with it is described random
Entropy asks corresponding entropy data；
Generation module, for obtaining initial entropy source data, by the entropy data of the initial entropy source data and server-side transmission
Mixed processing is carried out, random number is generated, wherein the initial entropy source data are the weak entropy source data in local that client obtains.
7. client according to claim 6, which is characterized in that further include：
Deciphering module, the entropy number for when the entropy data that the server-side is sent are encryption data, being sent to the server-side
According to being decrypted, the entropy data after being decrypted.
8. client according to claim 7, which is characterized in that the deciphering module includes：
Decryption unit is decrypted the entropy data that the server-side is sent for the private key by client, and described in verification
The digital signature for the entropy data that server-side is sent, the entropy data after being decrypted.
9. a kind of server-side, which is characterized in that including：
Request receiving module, the Random Entropy for receiving client transmission obtain request；
Calling module specifies entropy source to get entropy data for obtaining request call according to the Random Entropy；
Data transmission blocks, for the entropy data to be sent to the client, wherein the client is according to the entropy number
According to generation random number.
10. server-side according to claim 9, which is characterized in that further include：
Public key acquisition module, the public key for obtaining the client according to the mark of the client；
Encrypting module carries out the entropy data after signature for being digitally signed to the entropy data, and by the public key
Encryption, obtains encrypted entropy data.
11. a kind of random-number-generating system, which is characterized in that including：Client described in claim 6~8 and claim 9
Server-side described in~10.
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| CN109617679A (en) * | 2018-11-29 | 2019-04-12 | 哈希未来(北京)科技有限公司 | Generate, obtain and provide method, system and the storage medium of random number |
| CN109981811A (en) * | 2019-03-12 | 2019-07-05 | 众安信息技术服务有限公司 | A kind of the session id generation method and system of end application |
| CN110069241A (en) * | 2019-03-27 | 2019-07-30 | 阿里巴巴集团控股有限公司 | Acquisition methods, device, client device and the server of pseudo random number |
| CN110069241B (en) * | 2019-03-27 | 2023-03-03 | 创新先进技术有限公司 | Pseudo-random number acquisition method and device, client device and server |
| CN111221503A (en) * | 2019-12-03 | 2020-06-02 | 核芯互联科技(青岛)有限公司 | Pseudo-random number generation method, generator and sensor suitable for Internet of things environment |
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| CN111245813A (en) * | 2020-01-07 | 2020-06-05 | 北京数字认证股份有限公司 | Cryptographic resource pool system, encryption method, electronic device, and storage medium |
| CN111290734A (en) * | 2020-03-05 | 2020-06-16 | 中安云科科技发展(山东)有限公司 | True random number acquisition method and system and cipher machine |
| CN111290734B (en) * | 2020-03-05 | 2023-09-08 | 中安云科科技发展(山东)有限公司 | True random number acquisition method, system and cipher machine |
| CN113296738A (en) * | 2020-11-05 | 2021-08-24 | 阿里巴巴集团控股有限公司 | Quantum random number service management system, providing and requesting method and device |
| CN115314204A (en) * | 2022-10-11 | 2022-11-08 | 南京易科腾信息技术有限公司 | Random number generation method, device and storage medium |
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