CN113688360B - Distributed digital signature processing method and system thereof - Google Patents
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- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 5
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
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- G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
- G06F21/16—Program or content traceability, e.g. by watermarking
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
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Abstract
The invention discloses a distributed digital signature processing method and a system thereof, which enable a user to execute signature on a digital file with a plurality of pages through an electronic device, and ensure that the signed digital file is not replaced and changed for each page of the signed digital file.
Description
Technical Field
The present invention relates to digital signature technology, and more particularly, to a distributed digital signature processing method and system for digital signature with low algorithm load.
Background
Conventionally, in order to determine the legal effect of a document, it is necessary to sign or stamp the document.
On paper documents, legal effects of the documents are confirmed by signing and/or stamping, and usually, signing and/or stamping is performed on the occurrence name or the last page, however, in order to ensure continuity between a plurality of documents and not to be replaced, a saddle seal is stamped between each document so as to ensure the original signed state of the plurality of documents.
In the digital file, digital signature is carried out on the whole digital file, and the invariable property of a plurality of files is ensured through the encryption of the digital signature; however, encryption or other operations of the digital file may increase the load of the operations, and a powerful processor is required to process the operations, which may cause the operations to be time-sliced or to be miscalculated. Meanwhile, the digital file needs to be downloaded once for digital signature, which results in huge files if the digital file accompanies the situation of image-text doping or the factors such as high image resolution. For electronic devices such as mobile phones or tablet computers, which are commonly used at present, the capability of a processor is not as good as that of a personal computer, and the storage space of the electronic device is limited, the conventional digital signature method has a defect.
In view of the above, the present invention provides a distributed digital signature processing method and system thereof, so as to provide a buyer and seller with a matching requirement.
Disclosure of Invention
The first objective of the present invention is to provide a distributed digital signature processing method for a user to execute signatures on a digital file having a plurality of pages.
The second objective of the present invention is to provide a signature page verification step for signature verification according to the above-mentioned distributed digital signature processing method.
The third objective of the present invention is to utilize a hash algorithm to check the page according to the above-mentioned distributed digital signature processing method, so as to generate a digital signature code embedded page on the page.
The fourth objective of the present invention is to record the digital signature code in each page according to the above-mentioned distributed digital signature processing system, so as to confirm the correctness and reliability of each page.
A fifth object of the present invention is to provide a distributed digital signature processing system for a user to execute signatures on a digital file having a plurality of pages.
A sixth object of the present invention is to provide a distributed digital signature processing system for verifying signature pages and verification pages related to digital files.
To achieve the above and other objects, the present invention provides a distributed digital signature processing method for a user to execute signatures on a digital file having a plurality of pages. The distributed digital signature processing method includes the steps of a: receiving initial file information of the digital file to determine the number of the pages of the digital file; step b: downloading one of the pages of the digital file as a page to be signed; step c: executing a first hash algorithm on the page to be signed to generate a first digital signature code corresponding to the page to be signed and embedding the first digital signature code into the page to be signed to form a signature page; step d: recording the first digital signature code on a page to be verified; step e: repeatedly executing the step b according to the number to generate corresponding signature pages in each of the pages and recording the first digital signature codes on the page to be verified until all the pages form the corresponding signature pages; step f: executing a second hash algorithm on the page to be verified to generate a second digital signature code corresponding to the page to be verified, and embedding the second digital signature code into the page to be verified to form a verification page; step g: the verification page is output.
Preferably, after step c, step h) is performed: outputting the signature page.
It is further preferred that before step a or after step g, the digital file initiation step is performed comprising:
i: executing the first hash algorithm on the pages of the digital file to generate a corresponding third digital signature code on each of the pages;
j: recording the third digital signature code of the pages in a checking page; and
k: the second hash algorithm is performed on the ping page to generate a fourth digital signature code corresponding to the ping page.
Still further preferably, the distributed digital signature processing method further includes a signature page verification step:
l: comparing the first digital signature code and the third digital signature code of the pages so as to respectively generate comparison information of comparison success and comparison failure;
m: repeatedly executing step l according to the number to obtain the comparison information of the pages until the pages are compared;
n: calculating the ratio of the comparison success to the comparison failure to determine the accuracy of the digital file.
Still further preferably, the distributed digital signature processing method further includes a verification page verification step of:
o: confirming the correct rate, executing step p when the correct rate is not less than a threshold value, and executing step r when the correct rate is less than the threshold value;
and p: comparing the second digital signature code with the fourth digital signature code to generate file correct information and file error information;
q: sending out a signature success notification according to the correct information of the file and a signature failure notification according to the incorrect information of the file; and
r: and (5) finishing verification.
Still further preferably, the distributed digital signature processing method further includes a digital file verification step:
s: comparing the second digital signature code with the fourth digital signature code to generate file correct information and file error information;
t: executing step u according to the file correct information and executing step z according to the file error information;
u: comparing the first digital signature code and the third digital signature code of the pages to respectively generate comparison information of comparison success and comparison failure;
v: repeatedly executing the step u according to the quantity to acquire the comparison information of the pages until the pages are compared;
w: calculating the ratio of the comparison success to the comparison failure to determine the accuracy of the digital file;
x: executing the step y when the accuracy rate is not less than a threshold value, and executing the step z when the accuracy rate is less than the threshold value;
y: sending out a signature success notice and ending verification; and
and z: and sending out a signature failure notice and ending verification.
Still further preferably, the distributed digital signature processing method further includes the step of setting:
aa: the threshold was set to 100%.
Further preferably, the first hash algorithm and the second hash algorithm are the same algorithm.
In order to achieve the above and other objects, the present invention provides a distributed digital signature processing system for a user to execute signatures on a digital file having a plurality of pages. The distributed digital signature processing system includes an input unit, a processing unit and an output unit. The input unit receives a signature or a seal from the user, and the input unit sequentially receives each of the pages of the digital file. The processing unit is connected with the input unit. The processing unit embeds the signature or the stamp in each of the pages. The processing unit performs a first hash algorithm on each of the pages to generate signature pages having a first digital signature code, respectively. The processing unit establishes a verification page to record the first digital signature codes and executes a second hash algorithm to generate corresponding second digital signature codes on the verification page. The output unit is connected with the processing unit to output the signature page and the verification page.
To achieve the above and other objects, the present invention provides a distributed digital signature processing system for verifying signature pages and verification pages related to digital documents. Wherein, the digital file has a plurality of pages. The distributed digital signature processing system includes an input unit, a processing unit and an output unit. The input unit receives the signature page with the first digital signature code and the verification page with the second digital signature code. The processing unit is connected with the input unit. The processing unit performs a first hash algorithm on each of the pages to generate a third digital signature code. The processing unit establishes a check page to record the third digital signature codes and performs a second hash algorithm to generate a corresponding fourth digital signature code on the check page. The output unit is connected with the processing unit to output a signature success notification and a signature failure notification. Wherein the processing unit compares the first digital signature with the third digital signature code and compares the second digital signature code with the fourth digital signature code to generate the signature success notification or the signature failure notification.
Compared with the prior art, the invention provides a distributed digital signature processing method and a system thereof, and the distributed digital signature processing method and the system thereof have the following advantages:
(a) The method comprises the following steps Can be applied to working environments with low calculation capability, such as mobile communication devices and the like.
(b) The method comprises the following steps The storage space requirement is low, and the page requiring signature can be downloaded.
(c) The method comprises the following steps In addition to digital signature of a page, digital signature of a saddle stitch type can be performed on successive pages of multiple pages.
(d) The method comprises the following steps And verifying correctness, irreplaceability and unalterability between each page and the plurality of pages.
Drawings
FIG. 1 is a flowchart of a distributed digital signature processing method according to a first embodiment of the present invention;
FIG. 2 is a flow chart of a method for processing a distributed digital signature according to a second embodiment of the present invention;
FIG. 3 is a block diagram of a distributed digital signature processing system according to a third embodiment of the present invention;
FIG. 4 is a block diagram of a distributed digital signature processing system according to a fourth embodiment of the present invention.
Description of the reference numerals
S11-S17 … method steps
S21-S23 … method steps
S21 … method steps
2 … digital file
22 … page
10. 10' … distributed digital signature processing system
12. 12' … input unit
14. 14' … processing unit
16. 16' … output unit
S1 … signature
S2 … seal
H1 … first hash algorithm
H2 … second hash algorithm
FDSC … first digital signature code
SDSC … second digital signature code
TDSC … third digital signature code
FODSC … fourth digital signature code
SP … signature page
RP … verification page
CP … ping page
SSN … signature success notification
SFN … signature failure notification.
Detailed Description
For a full understanding of the objects, features and advantages of the present invention, reference should now be made to the following detailed description of the invention taken in conjunction with the accompanying drawings, in which:
in the present disclosure, one or more of the units, elements and components described herein are used. This is for convenience of description only and is not intended to provide a general sense of the scope of the invention. Thus, unless expressly stated otherwise, such description should be understood as including one, at least one, and the singular also includes the plural.
Herein, the terms including, having, containing or any other similar terms are intended to encompass non-exclusive inclusion. For example, an element, structure, article, or device comprising a plurality of elements is not limited to only those elements listed herein but may include other elements not expressly listed but inherent to such element, structure, article, or device. In addition, unless explicitly stated to the contrary, the term "or" refers to an inclusive or and not an exclusive or.
Referring to fig. 1, a flowchart of a distributed digital signature processing method according to a first embodiment of the present invention is shown. In FIG. 1, the distributed digital signature processing method can provide a user with a digital document having a plurality of pages to execute signatures. The user can execute the distributed digital signature processing method in the electronic device, such as a mobile phone, a tablet, etc.
The distributed digital signature processing method starts in step a, and receives initial file information of the digital file to determine the number of pages of the digital file. In this step, the number of pages can be calculated or confirmed by the initial file information for subsequent calculation of the digital signature.
Then step b, one of the pages of the digital file is downloaded as the page to be signed. In this step, either single page download or multiple page download may be employed. In one embodiment, in the single page download mode, the storage space can be effectively saved.
And c, executing a first hash algorithm on the page to be signed to generate a first digital signature code corresponding to the page to be signed, and embedding the first digital signature code into the page to be signed to form a signature page. In this step, the content of the page is calculated by the first hash algorithm, and a single and unique first digital signature is formed on the signature page, and the digital signature can be understood by the content of the first digital signature. It is noted that the first hash algorithm may incorporate time stamps, page numbers, etc. as the algorithm factors of the hash algorithm. In addition, it should be noted that the user may add a seal or a signature to the page to be signed, and form a first digital signature code of the signed page with the user's seal or signature by using a first hash algorithm. It should be noted that in one embodiment, after the signature page is generated, the signature page is output to the sender requesting the digital signature, such as a platform, an authorized entity, a server, or other electronic device.
And step d, recording the first digital signature code on the page to be verified. In this step, the first digital signature code may sequentially record the page to be verified, in other words, the page to be verified has one or more lists of the first digital signature codes from different pages.
And step e, repeatedly executing the step b according to the number to generate corresponding signature pages in each of the pages and recording the first digital signature codes on the page to be verified until all the pages form the corresponding signature pages. In this step, a first digital signature code may be embedded into each page to form a corresponding signature page.
And step f, executing a second hash algorithm on the page to be verified to generate a second digital signature code corresponding to the page to be verified, and embedding the second digital signature code into the page to be verified to form a verification page. In this embodiment, the second hash algorithm may be the same as or different from the first hash algorithm.
And step g, outputting the verification page.
Referring to fig. 2, a flow chart of a distributed digital signature processing method according to a second embodiment of the invention is shown. In fig. 2, before step a or after step g of the first embodiment, the purpose is to perform, at the digital file supply end, a digital file initial step for the digital file provided by the digital file supply end, where the steps of processing are:
step i, executing the first hash algorithm on the pages of each digital file to generate a corresponding third digital signature code on each of the pages.
And j, recording the third digital signature code of each page in the checking page.
Step k, executing the second hash algorithm on the inspection page to generate a fourth digital signature code corresponding to the inspection page.
After the initial step of the digital file is completed, a first type digital document authentication step and a second type digital document authentication step may then be performed.
In the first type of digital document verification step, it further includes a signature page verification step and a verification page verification step.
In the signature page verification step, a step I is initiated to compare the first digital signature code and the third digital signature code of each of the pages so as to respectively generate comparison information of comparison success and comparison failure; step m, repeatedly executing the steps according to the number to obtain the comparison information of each page until all the pages are compared; and next, step n, calculating the comparison failure rate of the comparison success to determine the accuracy of the digital file.
The page verification step comprises the following steps:
step o: confirming the correct rate, and executing a step p when the correct rate is greater than or equal to a threshold value, wherein the step p is as follows: comparing the second digital signature code with the fourth digital signature code to generate file correct information and file error information, sending out a signature success notification according to the file correct information and a signature failure notification according to the file error information, and finally ending the verification; in addition, when step o is performed, when the accuracy is smaller than the threshold value, step r is performed, where step r: and (5) finishing verification. In the second type digital document verification step, starting step s, comparing the second digital signature code with the fourth digital signature code to generate file correct information and file error information; step t is followed by executing step u according to the file correct information, wherein step u: comparing the first digital signature code and the third digital signature code of each of the pages to generate comparison information of comparison success and comparison failure respectively, and executing step v after comparing: repeatedly executing step u according to the number to obtain the comparison information of each page until all the pages are compared, then, step w, further calculating the ratio of the comparison success to the comparison failure to determine the accuracy of the digital file, and then, executing step x: executing step y when the accuracy is greater than or equal to the threshold, wherein step y: and sending out a signature success notice, and finally ending verification, or executing a step z when the accuracy rate is less than the threshold value through judgment in the step x, wherein the step z is as follows: issuing a signature failure notice, and finally ending verification; in step t, step z is executed based on the file error information, and a signature failure notification is issued, and the verification is finally ended.
It should be noted that the aforementioned first type document authentication step and the aforementioned first type document authentication step may be performed, wherein the threshold may be set at 100% or any other value, i.e. step aa.
Referring to fig. 3, a block diagram of a distributed digital signature processing system according to a third embodiment of the present invention is shown. In FIG. 3, the distributed digital signature processing system 10 enables a user to perform signatures on a digital document 2 having a plurality of pages 22.
The distributed digital signature processing system 10 includes an input unit 12, a processing unit 14, and an output unit 16.
The input unit 12 receives the signature S1 or the stamp S2 from the user, and the input unit 12 sequentially receives each page 22 of the digital file 2.
The processing unit 14 is connected to the input unit 12. The processing unit 14 embeds the signature S1 or the stamp S2 in each page 22. The processing unit 14 performs a first hash algorithm H1 to calculate each page 22 to generate signature pages SP with a first digital signature code FDSC, respectively. The processing unit 14 additionally establishes a verification page RP to record the first digital signature codes FDSC and performs a second hash algorithm H2 algorithm to generate corresponding second digital signature codes SDSC on the verification page RP.
The output unit 16 is connected to the processing unit 14 to output the signature page SP and the verification page RP.
Referring to fig. 4, a block diagram of a distributed digital signature processing system according to a fourth embodiment of the present invention is shown. In fig. 4, the distributed digital signature processing system 10' is capable of verifying signature pages SP and verification pages RP associated with the digital file 2. Wherein the digital file 2 has a plurality of pages 22.
The distributed digital signature processing system 10 'includes an input unit 12', a processing unit 14', and an output unit 16'.
The input unit 12' receives the signature page SP with the first digital signature code FDSC and the verification page RP with the second digital signature code SDSC.
The processing unit 14 'is connected to the input unit 12'. The processing unit 14' performs a first hash algorithm H1 on each of the pages 22 to generate a third digital signature TDSC. The processing unit 14' establishes a check page CP to record the third digital signature codes TDSC and performs a second hash algorithm H2 algorithm to generate a corresponding fourth digital signature code FODSC on the check page CP.
The output unit 16 'is connected to the processing unit 14' to output a signature success notification SSN and a signature failure notification SFN. The signature success notification SSN and the signature failure notification SFN are generated by the processing unit 12' comparing the first digital signature FDSC with the third digital signature TDSC and comparing the second digital signature SDSC with the fourth digital signature FODSC.
The present invention has been disclosed in the foregoing in terms of preferred embodiments, and it will be appreciated by those skilled in the art that the embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of the invention. It should be noted that all equivalent changes and substitutions are intended to be included in the scope of the present invention. Accordingly, the scope of the invention is defined by the appended claims.
Claims (10)
1. A distributed digital signature processing method for a user to execute signature on a digital file with a plurality of pages is characterized in that the distributed digital signature processing method comprises the following steps:
a: receiving initial file information of the digital file to determine the number of the pages of the digital file;
b: downloading one of the pages of the digital file as a page to be signed;
c: executing a first hash algorithm on the page to be signed to generate a first digital signature code corresponding to the page to be signed, and embedding the first digital signature code into the page to be signed to form a signature page;
d: recording the first digital signature code on a page to be verified;
e: repeating steps b to d according to the number to generate corresponding signature pages on the pages, and recording the first digital signature codes on the page to be verified until all the pages form the corresponding signature pages;
f: executing a second hash algorithm on the page to be verified to generate a second digital signature code corresponding to the page to be verified, and embedding the second digital signature code into the page to be verified to form a verification page; and
g: the verification page is output.
2. The method of claim 1, wherein after step c, the steps of:
h: outputting the signature page.
3. The method of claim 2, wherein the step of initializing the digital file is performed before step a or after step g, and comprises:
i: executing the first hash algorithm on the pages of the digital file to generate a corresponding third digital signature code on each of the pages;
j: recording the third digital signature code of the pages in a checking page; and
k: the second hash algorithm is performed on the ping page to generate a fourth digital signature code corresponding to the ping page.
4. The distributed digital signature processing method as recited in claim 3, further comprising a signature page verification step of:
l: comparing the first digital signature code and the third digital signature code of the pages so as to respectively generate comparison information of comparison success and comparison failure;
m: repeatedly executing step l according to the number to obtain the comparison information of the pages until the pages are compared;
n: calculating the ratio of the comparison success to the comparison failure to determine the accuracy of the digital file.
5. The method of claim 4, further comprising the step of verifying the page:
o: confirming the correct rate, executing step p when the correct rate is not less than a threshold value, and executing step r when the correct rate is less than the threshold value;
and p: comparing the second digital signature code with the fourth digital signature code to generate file correct information and file error information;
q: sending out a signature success notification according to the correct information of the file and a signature failure notification according to the incorrect information of the file; and
r: and (5) finishing verification.
6. The distributed digital signature processing method as recited in claim 3, further comprising a digital document verification step of:
s: comparing the second digital signature code with the fourth digital signature code to generate file correct information and file error information;
t: executing step u according to the file correct information and executing step z according to the file error information;
u: comparing the first digital signature code and the third digital signature code of the pages to respectively generate comparison information of comparison success and comparison failure;
v: repeatedly executing the step u according to the quantity to acquire the comparison information of the pages until the pages are compared;
w: calculating the ratio of the comparison success to the comparison failure to determine the accuracy of the digital file;
x: executing the step y when the accuracy rate is not less than a threshold value, and executing the step z when the accuracy rate is less than the threshold value;
y: sending out a signature success notice and ending verification; and
and z: and sending out a signature failure notice and ending verification.
7. The method of claim 5 or 6, further comprising the steps of:
aa: the threshold was set to 100%.
8. The method of claim 1, wherein the first hash algorithm and the second hash algorithm are the same algorithm.
9. A distributed digital signature processing system for a user to perform a signature on a digital file having a plurality of pages, the distributed digital signature processing system comprising:
an input unit for receiving a signature or a seal from the user, and the input unit sequentially receives the pages of the digital file;
the processing unit is connected with the input unit, the processing unit embeds the signature or the seal in the pages, the processing unit executes a first hash algorithm to calculate the pages to respectively generate signature pages with first digital signature codes, and the processing unit establishes a verification page to record the first digital signature codes and execute a second hash algorithm to generate corresponding second digital signature codes on the verification page; and
and the output unit is connected with the processing unit to output the signature page and the verification page.
10. A distributed digital signature processing system for verifying signature pages and verification pages associated with a digital document, wherein the digital document has a plurality of pages, the distributed digital signature processing system comprising:
an input unit for receiving the signature page with the first digital signature code and the verification page with the second digital signature code;
the processing unit is connected with the input unit, and executes a first hash algorithm to calculate each page so as to respectively generate a third digital signature code, establishes a checking page so as to record the third digital signature codes, and executes a second hash algorithm to calculate so as to generate a corresponding fourth digital signature code on the checking page; and
the output unit is connected with the processing unit to output a signature success notification and a signature failure notification;
wherein the processing unit compares the first digital signature code with the third digital signature code and compares the second digital signature code with the fourth digital signature code to generate the signature success notification or the signature failure notification.
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| TWI778361B (en) | 2022-09-21 |
| TW202145752A (en) | 2021-12-01 |
| CN113688360A (en) | 2021-11-23 |
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