CN111914283B - File electronic signature algorithm based on big data block chain - Google Patents
File electronic signature algorithm based on big data block chain Download PDFInfo
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- CN111914283B CN111914283B CN202010841790.1A CN202010841790A CN111914283B CN 111914283 B CN111914283 B CN 111914283B CN 202010841790 A CN202010841790 A CN 202010841790A CN 111914283 B CN111914283 B CN 111914283B
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- 238000005070 sampling Methods 0.000 claims abstract description 7
- 230000007246 mechanism Effects 0.000 claims description 4
- 238000012795 verification Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 description 6
- 238000003909 pattern recognition Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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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
- G06F21/604—Tools and structures for managing or administering access control systems
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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
- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
- G06F21/6209—Protecting access to data via a platform, e.g. using keys or access control rules to a single file or object, e.g. in a secure envelope, encrypted and accessed using a key, or with access control rules appended to the object itself
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Abstract
The invention relates to a file electronic signature algorithm based on big data block chain. The original seal image forming the electronic signature is from a seal scanning file which is permitted by a record, the sampling format of the seal scanning file is preferably the suffix name of a JPG or PNG file, and the sequence of reading pixel points of the seal scanning file is as follows: the top grid position of the upper left corner starts from left to right, and a row is started from left to right until all reading is completed; the electronic signature graphic data is adopted to realize the leap of converting the graphic file into digital form expression, and the converted digital data group can be distributed to any authorized user on a blockchain, so that the electronic signature has high safety and good sorting linkage, and is suitable for electronic signature of the blockchain file with big data background.
Description
Technical Field
The invention relates to a file electronic signature algorithm based on big data block chain.
Background
The electronic signature is a representation form of the electronic signature, the electronic signature operation is converted into the same visual effect as the paper file stamping operation by utilizing an image processing technology, and meanwhile, the authenticity and the integrity of the electronic information and the non-repudiation of a signer are ensured by utilizing the electronic signature technology. Electronic signature, like the digital certificate used by us, is a means for identity verification, and generally refers to all electronic forms that exist, are attached to and logically associated with electronic documents, and can be used to identify the signer of the electronic document, ensure the integrity of the document, and represent the fact that the signer agrees to the fact stated by the electronic document. In general, electronic signatures are considered from a technical point of view. Mainly refers to a safety guarantee measure for identifying the identity of a principal and ensuring that the transaction data content is not tampered through a specific technical scheme. In a broad sense, electronic signatures include not only "asymmetric key encryption" in our general sense, but also computer passwords, biometric handwriting recognition, fingerprint recognition, as well as newly emerging ocular iris perspective recognition, facial pattern recognition, and the like. The electronic signature technology is the most mature digital signature at present, and is manufactured by using an asymmetric cipher technology of a public key and a secret key. However, the current electronic signature is generally aimed at point-to-point, that is, a unit or individual signature signs a related document with respect to the document in which the unit or individual signature is located, and the mechanism of the signature has limited privacy, so that when the personnel who store signature codes have problems such as greedy, the electronic signature is also unsafe, but if the codes of the electronic signature are all separated and disassembled based on the blockchain technology on big data, each user scattered on the blockchain has the right to supervise or drive part of the electronic signature.
Disclosure of Invention
The invention aims to provide a file electronic signature algorithm based on big data blockchain, which is indicated in the background technology and can split the code of the electronic signature so that each user on the blockchain can drive the rights of storing, supervising and using the electronic signature.
The invention solves the technical problems as follows: the file electronic signature algorithm based on the big data block chain is characterized in that: the original seal image forming the electronic signature is from a seal scanning file which is allowed by a record, the sampling format of the seal scanning file is preferably the suffix name of a JPG or PNG file, the pixel range is 2500 to 6400, and the capacity is controlled between 5KB and 25 KB;
the seal scanning file sampling color mode is RGB identification, the RGB points are represented by X, Y and Z, and the value range of X, Y, Z is 0-255; the total pixel expression of the seal impression scanning file is W width x L length, and the value ranges of the W width and the L length are 1-6400 intervals; the sequence of reading pixel points of the seal impression scanning file is as follows: the top grid position of the upper left corner starts from left to right, and a row is started from left to right until all reading is completed; the seal scanning file is decomposed into a plurality of pixel point data sets according to the pixel reading sequence, and the number of pixels formed by single segments of the pixel point data sets is not less than 64;
the numbers in the pixel point data sets of each section are correspondingly added to obtain data of U1, V1, W1, U2, V2, W2 and the like, wherein the final value of the numbers of the U, V, W subscript is equal to the number of the pixel point data sets decomposed into a plurality of sections; and correspondingly adding the numbers in the pixel point data sets to obtain U, V and W key values, wherein the U, V and W key values are public information.
The background color of the seal impression scanning file is unified to be white.
And the blank pixel points of the seal scanning file are 255,255 and 255.
The number value of the pixel point data groups which are decomposed into a plurality of segments is not lower than 12 groups.
The U, V and W secret key values are signature verification mechanisms, and signature fails when the U, V and W secret key values are not equal to the sum of all pixel point data sets.
The invention has the beneficial effects that: the electronic signature graphic data is adopted to realize the leap of converting the graphic file into digital form expression, and the converted digital data set can be distributed to any authorized user on the blockchain, so that the electronic signature has high safety and good sorting linkage, and is suitable for the electronic signature and signature of the blockchain file with a large data background.
Drawings
FIG. 1 is a diagram of a corporate record official seal scanner according to an embodiment of the present invention.
FIG. 2 is an enlarged view of a block of a document electronic signature algorithm based on big data blockchain according to an embodiment of the present invention.
FIG. 3 is a block chain based single pixel location of a large data block chain based document electronic signature algorithm of the present invention, where a company has filed a official seal scan of RGB pattern recognition.
FIG. 4 is a block chain based additive calculation of user-separated electronic signature code data segments on a block chain according to an embodiment of the present invention.
FIG. 5 is a block chain based addition of user electronic signature code data across all blockchains in an embodiment of a big data blockchain based file electronic signature algorithm in accordance with the present invention.
FIG. 6 is a block chain based overall framework of a file electronic signature algorithm according to the present invention.
Description of the embodiments
The following describes in detail the embodiments of the present invention with reference to fig. 1-6.
Examples: the file electronic signature algorithm based on the big data block chain is characterized in that: the original seal image forming the electronic signature is from a seal scanning file which is allowed by a record, the sampling format of the seal scanning file is preferably the suffix name of a JPG or PNG file, the pixel range is 2500 to 6400, and the capacity is controlled between 5KB and 25 KB;
the seal scanning file sampling color mode is RGB identification, the RGB points are represented by X, Y and Z, and the value range of X, Y, Z is 0-255; the total pixel expression of the seal impression scanning file is W width x L length, and the value ranges of the W width and the L length are 1-6400 intervals; the sequence of reading pixel points of the seal impression scanning file is as follows: the top grid position of the upper left corner starts from left to right, and a row is started from left to right until all reading is completed; the seal scanning file is decomposed into a plurality of pixel point data sets according to the pixel reading sequence, and the number of pixels formed by single segments of the pixel point data sets is not less than 64;
the numbers in the pixel point data sets of each section are correspondingly added to obtain data of U1, V1, W1, U2, V2, W2 and the like, wherein the final value of the numbers of the U, V, W subscript is equal to the number of the pixel point data sets decomposed into a plurality of sections; and correspondingly adding the numbers in the pixel point data sets to obtain U, V and W key values, wherein the U, V and W key values are public information.
The background color of the seal impression scanning file is unified to be white.
And the blank pixel points of the seal scanning file are 255,255 and 255.
The number value of the pixel point data groups which are decomposed into a plurality of segments is not lower than 12 groups.
The U, V and W secret key values are signature verification mechanisms, and signature fails when the U, V and W secret key values are not equal to the sum of all pixel point data sets.
In the following, according to the examples, "Shaoxing, md. XXX technologies Co., ltd" is used as a signature scan file for converting the recorded license; as can be seen from fig. 1 and 2, three pixel points are obtained in the example, and the identified pixel points are 255,255,61,75, 238,36,47 through the RGB image mode; the number of the pixel points formed by the single section of the pixel point data set is not less than 64; therefore, 64 points are needed for a single set of data segments, but the applicant draws only 3 points due to the limitation of the drawing itself, so the reviewer of the embodiment of the present invention should understand with more than 64 points of labeling.
As can be seen in fig. 4, the single pixel point data are superimposed one-to-one to obtain a single-segment pixel point data set of U1, V1, W1, and as shown in fig. 5, the single-segment pixel point data sets of a plurality of U1, V1, W1 are superimposed one-to-one to obtain a pixel point data set of a key U, V, W; the U, V, W is the public information of the electronic signature. In popular terms, a scanning piece of an electronic signature is decomposed into a plurality of pixel points, each pixel point can record data groups expressed in three numbers through an RGB image mode, and each group is not less than 64 pixel point data groups; in the user authority range of the whole blockchain, each user can hold a single-segment pixel point data set, and each user knows U, V and W as final value digital information of the electronic signature data set, so that after the electronic signature is finally completed, each user on the blockchain can judge whether the electronic signature is valid or not, and therefore, U, V and W as final value digital information of the electronic signature data set cannot be deduced as long as more than 2 users are missing; the complete signature is of course the sum of all the user signature data on the blockchain.
As can be seen in fig. 5, although U, V, W are the final values of the electronic signature data sets and digital information is disclosed, the superposition of each pixel point data set is required to obtain the final value, and the data values consistent with the disclosed information of U, V, W cannot be formed in the absence of one pixel point data set, so that the anti-counterfeiting performance or the electronic encryption performance of the electronic signature data set is extremely strong.
The applicant encrypts the electronic signature algorithm in two ways: 1. the digital codes are 2. Code-converted signature is converted into a chapter after graphics through a data group; the data information may be counterfeited, and the data information may be superimposed to form values of public information of U, V and W, but the values of U, V and W need to be formed by pixel point data values with large data volume, if the values of the parts are counterfeited, a random stamp is finally formed, and the authenticity of the stamp is known only by naked eyes.
Therefore, the algorithm is particularly suitable for users based on big data groups, and the whole authorized big data group users implement signatures such as files on the same authorized block chain, so the algorithm has extremely high innovation and novelty.
Claims (4)
1. The file electronic signature algorithm based on the big data block chain is characterized in that: the original seal image forming the electronic signature is from a seal scanning file which is licensed by a record, the sampling format of the seal scanning file is the suffix name of a JPG or PNG file, the pixel range is 2500-6400, and the capacity is controlled between 5-25 KB;
the seal scanning file sampling color mode is RGB identification, the RGB points are represented by X, Y and Z, and the value range of X, Y, Z is 0-255; the total pixel expression of the seal impression scanning file is W width x L length, and the value ranges of the W width and the L length are 1-6400 intervals; the sequence of reading pixel points of the seal impression scanning file is as follows: the top grid position of the upper left corner starts from left to right, and a row is started from left to right until all reading is completed; the seal scanning file is decomposed into a plurality of pixel point data sets according to the pixel reading sequence, and the number of pixels formed by single segments of the pixel point data sets is not less than 64;
the numbers in the pixel point location data sets of each section are correspondingly added to obtain data of U1, V1, W1, U2, V2 and W2, wherein the final value of the numbers of the U, V, W subscript is equal to the number of the pixel point location data sets decomposed into a plurality of sections; the numbers in the pixel point data set are correspondingly added to obtain U, V and W secret key values, and the U, V and W secret key values are public information; the U, V and W secret key values are signature verification mechanisms, and signature fails when the U, V and W secret key values are not equal to the sum of all pixel point data sets.
2. The electronic signature algorithm of claim 1, wherein the background color of the signature scanned document is uniform white.
3. The electronic signature algorithm of claim 1, wherein the signature scan file blank pixel positions are 255,255, 255.
4. The electronic signature algorithm for a big data blockchain based file of claim 1, wherein the following is
The number of pixel point data groups which are decomposed into a plurality of segments is not less than 12 groups.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010841790.1A CN111914283B (en) | 2020-08-20 | 2020-08-20 | File electronic signature algorithm based on big data block chain |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010841790.1A CN111914283B (en) | 2020-08-20 | 2020-08-20 | File electronic signature algorithm based on big data block chain |
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| CN111914283A CN111914283A (en) | 2020-11-10 |
| CN111914283B true CN111914283B (en) | 2024-03-26 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI822357B (en) * | 2022-09-23 | 2023-11-11 | 蘇士賓 | Document signing management method and system thereof |
| CN116611082A (en) * | 2023-04-07 | 2023-08-18 | 江苏优培电子科技有限公司 | File electronic signature algorithm capable of improving electronic signature security |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007006122A (en) * | 2005-06-23 | 2007-01-11 | Mitsubishi Electric Information Systems Corp | Electronic seal system and electronic seal program |
| CN102880876A (en) * | 2012-09-20 | 2013-01-16 | 深圳市盛视科技有限公司 | Seal checking method and seal checking device |
| CN103049904A (en) * | 2012-11-30 | 2013-04-17 | 北京华夏力鸿商品检验有限公司 | Image extraction method and system, and electronic certificate making method and system |
| KR101752659B1 (en) * | 2016-02-19 | 2017-07-03 | 민운기 | Image key certification method and system |
| WO2017130711A1 (en) * | 2016-01-29 | 2017-08-03 | 株式会社ファインデックス | Electronic signature management system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7164778B1 (en) * | 1999-01-25 | 2007-01-16 | Nippon Telegraph And Telephone Corporation | Digital watermark embedding method, digital watermark embedding apparatus, and storage medium storing a digital watermark embedding program |
| WO2003009580A1 (en) * | 2001-07-10 | 2003-01-30 | Kowa Co., Ltd. | Electronic watermark embedding method and extraction method and apparatus for them |
| JP5703707B2 (en) * | 2010-11-18 | 2015-04-22 | 富士ゼロックス株式会社 | Image processing system, image processing apparatus, and image processing program |
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- 2020-08-20 CN CN202010841790.1A patent/CN111914283B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007006122A (en) * | 2005-06-23 | 2007-01-11 | Mitsubishi Electric Information Systems Corp | Electronic seal system and electronic seal program |
| CN102880876A (en) * | 2012-09-20 | 2013-01-16 | 深圳市盛视科技有限公司 | Seal checking method and seal checking device |
| CN103049904A (en) * | 2012-11-30 | 2013-04-17 | 北京华夏力鸿商品检验有限公司 | Image extraction method and system, and electronic certificate making method and system |
| WO2017130711A1 (en) * | 2016-01-29 | 2017-08-03 | 株式会社ファインデックス | Electronic signature management system |
| KR101752659B1 (en) * | 2016-02-19 | 2017-07-03 | 민운기 | Image key certification method and system |
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Effective date of registration: 20240305 Address after: Room 901, No. 2, Lane 288, Qianfan Road, Xinqiao Town, Songjiang District, Shanghai 201612 Applicant after: Shikong (Shanghai) brand planning Co.,Ltd. Country or region after: China Address before: No. 287, Baiyang village, Anchang street, Keqiao District, Shaoxing City, Zhejiang Province Applicant before: Shaoxing maimang Intelligent Technology Co.,Ltd. Country or region before: China |
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