CN110363027A - A kind of generation of electronic contract and electric endorsement method - Google Patents
A kind of generation of electronic contract and electric endorsement method Download PDFInfo
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- CN110363027A CN110363027A CN201910542374.9A CN201910542374A CN110363027A CN 110363027 A CN110363027 A CN 110363027A CN 201910542374 A CN201910542374 A CN 201910542374A CN 110363027 A CN110363027 A CN 110363027A
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Abstract
The present invention provides a kind of generation methods of electronic contract, which comprises every row of the electronic contract paper of blank is divided into non-content region and content area；When treaty content is added on electronic contract paper, the check code of every row content area is calculated, is put into the non-content region of this line；The check code of all treaty contents is written in signature region；The check code of all treaty contents is written in finger-print region.The present invention also provides a kind of electric endorsement method, the electronic contract generated for above-mentioned method is signed.Method of the invention can guarantee the continuity of electronic contract paper, guarantee the consistency of content, so that treaty content be prevented to be tampered；And can also ensure that the safety of electronic signature, making to print electronic contract has the effect of papery contract.
Description
Technical field
The present invention relates to electronic signature fields, and in particular to a kind of generation of electronic contract and electric endorsement method.
Background technique
It signs a contract now, the wired lower signature of meeting, that is, it is aspectant, using the contract of hard-copies, write on contract
Good content, signs and seal at end, puts one's fingerprint.Have again be exactly electronic edition on line signature, the contract of some electronic signatures is exactly
Former pages are contents, and last page has a place to allow your a hand-written name on the screen, for such contract, very
It is easy to fake.If the Print Contract of this electronic version is come out, how to guarantee former pages of contents not by replacing
It changes, when printing, not can guarantee, when only preservation on the server, safety is by this authorities
Server security guarantees.
The electronic contract on line is needed sometimes, but sometimes also has the demand for printing electronic contract, paper
Matter and electronics feel be it is different, papery contract can bring a kind of formal sense, and there are also the guarantee for being exactly safety, electronics is closed
With the safety depending on storage server on line, is stored in the form of papery after printing, peace physically can be promoted
Quan Xing.
To sum up, current electronic contract is also leaky in the continuity of prevention electronic paper and the authenticity of signature.It is right
In electronic signature, at present using encryption technologies such as algorithms, certificate signature is realized, there is electronic signature effect but be unable to satisfy electricity
Effect under line with papery after sub- contracted worker is printed.
Summary of the invention
It is an object of the invention to overcome above-mentioned technological deficiency, a kind of generation method of electronic contract is proposed, it is ensured that electricity
The continuity of sub- contract paper, it can also be ensured that the method for consistency, it is also proposed that a kind of electric endorsement method not only guarantees electricity
The safety of son signature, and there is effect under the line of papery contract after printing.
To achieve the goals above, the invention proposes a kind of generation methods of electronic contract, which comprises
Every row of the electronic contract paper of blank is divided into non-content region and content area；
When treaty content is added on electronic contract paper, the check code of every row content area is calculated, this line is put into
Non-content region；
The check code of all treaty contents is written in signature region；The school of all treaty contents is written in finger-print region
Test code.
As a kind of improvement of the above method, the content area of every row of the electronic contract paper of the blank is divided into
Several lattices.
As a kind of improvement of the above method, the check code for calculating every row content area is specifically included:
Treaty content is digitized using lattice；Wherein, occupied lattice number 1 indicates, not occupied
Lattice number 0 indicate；The occupied lattice refers to that the word fallen in lattice reaches the two of lattice area
/ mono- and half more than；It is described to refer to that the word fallen in lattice is less than lattice face without occupied lattice
Long-pending half；
By lattices all in a line one Serial No. of corresponding number composition；
By Serial No. input validation code algorithm, a check code is calculated.
As a kind of improvement of the above method, the check code that all treaty contents are written in signature region；Specifically
Include:
S1) if signature region can show the check code of all treaty contents, into S3)；Otherwise, into S2)；
S2) using multirow as a line, the corresponding number of lattices all in every row is reformulated into a Serial No., then
Check code is recalculated, into S3)；
S3) the 1 of the binary digit of all check codes and 0 are corresponded to the lattice of the content area in signature region
In；Number appears dimmed for 1 lattice, and the lattice of number 0 is shown as white.
As a kind of improvement of the above method, the check code that all treaty contents are written in finger-print region；Specifically
Include:
T1) if finger-print region can show the check code of all treaty contents, into T3)；Otherwise, into T2)；
T2) using multirow as a line, the corresponding number of lattices all in every row is reformulated into a Serial No., then
Check code is recalculated, into T3)；
T3) the 1 of the binary digit of all check codes and 0 are corresponded to the lattice of the content area of finger-print region
In；Number appears dimmed for 1 lattice, and the lattice of number 0 is shown as white.
The invention also provides a kind of electric endorsement method, the electronic contract generated for above-mentioned method is signed,
The described method includes:
Using signature acquisition equipment acquisition signature, the corresponding hash value H1 of the signature is calculated；
Fingerprint is acquired using signature acquisition equipment；Calculate the corresponding hash value H2 of the fingerprint；
The time of acquisition contract signature calculates a hash value based on contract time of signature, hash value H1 and hash value H2
H3；
Above three cryptographic Hash is shown in the specified region of electronic contract.
As a kind of improvement of the above method, the signature acquisition equipment is the movement inputted with handwriting input and fingerprint
Terminal.
It is described using signature acquisition equipment acquisition signature as a kind of improvement of the above method, it is corresponding to calculate the signature
One hash value H1；It specifically includes:
The signature on the signature region for showing all check codes in signature acquisition equipment is obtained, is calculated superimposed each
The check code of row lattice；
Using hash algorithm, the check code based on all rows on signature region calculates a hash value H1.
It is described to use " signature acquisition equipment " acquisition fingerprint as a kind of improvement of the above method；It is corresponding to calculate the fingerprint
A hash value H2；It specifically includes:
The fingerprint on the finger-print region for showing all check codes in signature acquisition equipment is obtained, is calculated superimposed each
The check code of row lattice；
Using hash algorithm, the check code based on rows all on finger-print region calculates a hash value H2.
As a kind of improvement of the above method, the method also includes: the step of printing electronic contract in clear text manner,
It specifically includes:
Show the lattice of every row content area in treaty content；
Using an all check code in attached sheet display signature region of signing, signature is displayed magnified in the page；
Show that all check codes of finger-print region, fingerprint are displayed magnified in the page using a fingerprint attached sheet；
Print treaty content, signature attached sheet and fingerprint attached sheet.
As a kind of improvement of the above method, after the printing treaty content, signature attached sheet and fingerprint attached sheet further include: right
The step of contract is verified specifically includes:
The Serial No. of every row lattice composition of treaty content is counted, input validation code algorithm obtains check code, by this
The check code that check code is successively shown with signature attached sheet, fingerprint attached sheet is compared；
The Serial No. of every row lattice composition in statistics signature region, input validation code algorithm obtains check code, by institute
There is capable check code to be based on hash algorithm and calculates a hash value H11；
The Serial No. of every row lattice composition of finger-print region is counted, input validation code algorithm obtains check code, by institute
There is capable check code to be based on hash algorithm and calculates a hash value H21；
A hash value H31 is calculated based on contract time of signature, hash value H1 and hash value H2；
Above three cryptographic Hash H11, H21 and H31 are successively carried out with three cryptographic Hash H1, H2 and H3 in fingerprint attached sheet
It compares.
Present invention has an advantage that
1, method of the invention can guarantee the continuity of electronic contract paper, guarantee the consistency of content, to prevent
Treaty content is tampered；
2, method of the invention not only guarantees the safety of electronic signature, but also makes to print electronic contract with papery
The effect of contract.
Detailed description of the invention
Fig. 1 is the flow chart of the generation method of electronic contract of the invention；
Fig. 2 is the flow chart of electric endorsement method of the invention.
Specific embodiment
The present invention will be described in detail in the following with reference to the drawings and specific embodiments.
Embodiment 1
As shown in Figure 1, the embodiment of the present invention 1 proposes a kind of generation method of electronic contract, this method comprises:
Step 101) vacates sub-fraction on the right side of electronic contract paper and is used as " non-content region "；
Usually the paper used is all blank, is needed on the paper of blank plus some lattices, this small side
Lattice are like pixel, thickly dotted to be shown in " content area ", and the density of lattice is not fixation, as long as writing
It is covered completely by lattice in contractual content needs, such as if one square centimeter can write a word, small side
Lattice can achieve 100, that is, one square millimeter can have one.In this case, a word can be completely covered, each
Point can all be fallen in corresponding lattice.Different words can show different images, for falling on the word of small square area, reach
To more than the half and half of lattice area, then it is assumed that lattice is occupied, and area is less than half,
Think not occupied.Occupied lattice number 1 indicates, indicates without occupied lattice number 0.
Selection for lattice quantity, criterion is that lattice can be printed clearly, so when printing
When clarity is unsatisfactory for requiring, this lattice quantity can be reduced, be reduced to the degree for printing clear (for identification).Afterwards
Continue the development with printing technique, when the printer generation for having higher resolution, lattice can be printed enough to clearly
When, the quantity of lattice can be improved to improve precision.
If electronic contract uses the size of A4 paper, then right side can vacate 3 centimetres, as " non-content region ", this block
Region does not have above-mentioned lattice." non-content region " can also be in the left side of electronic contract paper.
Step 102) calculates (a school Checksum when writing digital content on electronic contract paper, for every a line
Test code), it is put into the rightmost side of this line, also with regard to " the non-content region " of step 101)；
If one centimetre of row is high as a line content, then the content of a line is if it is 15 centimetres, this when, row was high by 1
Centimetre, it is 15 square centimeters in total that length, which is 15 centimetres, that is, 1500 square millimeters, has 1500 lattices, this line
After writing content, content is digitized, that is, 101010000111 etc. using lattice, has 1500 numbers, it is right
In this 1500 numbers, a Checksum is calculated, the rightmost side of this line is put into；What is write on the left of every a line is content,
Right side has sub-fraction to placed Checksum.
And so on, an A4 from top to bottom, is indicated in this way.Then a piece of paper has a page 001, this
A page number can also calculate a Checksum as last line.Need how many pages of contents, so that it may how many page made.Until
After content writes, every page, the checksum of every a line will be obtained.This Checksum has verifying function, and verification is worked as
Whether preceding content is continuous.If intermediate content is tampered, then Checksum will change.
Currently, the algorithm of general calculating check code is CRC algorithm, CRC algorithm also divides a variety of, such as CRC8, CRC16,
CRC32. each CRC algorithm has corresponding multinomial.Such as CRC16 algorithm, also there are many multinomials, there is multinomial
0x8005,0x1021, this is the form of presentation of number, and there are also a kind of polynomial representations of functional expression.For checksum
Algorithm is not limited to CRC algorithm.
Step 103) finally reserves certain signature region and finger-print region electronic contract；It is written in signature region
The check code of all treaty contents；The check code of all treaty contents is written in finger-print region.
It is like normal contract, backmost has the side A and the side B or A, B, C tripartite etc. in contract.Each
Side reserves certain region below, for showing signature and fingerprint.
Embodiment 2
After adopting generation electronic contract with the aforedescribed process, need to sign to this contract.
Method in embodiment 1 ensures the continuity of content part, it is ensured that after content, needs to these contents
Confirmed, that is, the method for the signed and sealed (SS) under line.It on line, can be by the way of signing and acquiring fingerprint come real
It is existing.
As shown in Fig. 2, the embodiment of the present invention 2 provides a kind of electric endorsement method, this method comprises:
Step 201) uses " signature acquisition equipment " to complete electronic signature；
When use " signature acquisition equipment " signature, the content meter of electronic contract is shown in signature acquisition equipment
The Checksum calculated, that is, sign on these Checksum.But there are two problems here, and first is
How much Checksum is unfixed, few sometimes because the content signed a contract is more sometimes.Second Problem is exactly
How Checksum combines with signature.
" signature acquisition equipment " can be with are as follows: the mobile terminal inputted with handwriting input and fingerprint.Such as: mobile phone.
For first problem, Checksum is not fixed, and leads to more problems few sometimes sometimes, can basis
" signature acquisition equipment " available region adjusts the Checksum for needing to use, for example, signature device also can achieve A4 paper this
Big, if the particulars of a contract only have three or four A4 paper, Checksum can all be shown to " signature acquisition completely
In equipment ", if treaty content is relatively more, when " signature acquisition equipment " is not shown, takes and checksum is folded in half
The method of calculation, for example Checksum one times, if it is half Checksum if, so that it may display completely
?.Two row checksum are so merged into a line, one carried out by the two Checksum is inputted using Checksum algorithm,
As soon as calculating a new Checksum, this when, the summation of Checksum was reduced to half.
If calculating or relatively more, just conversion is a quarter or 1/8th etc..This when
The problem of Checksum sum solves.So a problem is also that how checksum combines with signature.
This string number is switched to binary system, that is, 1 and 0 number by Checksum i.e. string number.In " signature
Acquire equipment " in, it is divided into N number of lattice, corresponds to these lattices for 1 and the 0 of above-mentioned checksum binary digit
In.Number appears dimmed for 1 lattice, and the lattice of number 0 is shown as white.Then it signs on this, label
Name can occupy lattice again.Then the Checksum of every a line lattice is calculated by the way of foregoing teachings, if " signature
Input equipment " has 100 rows, then just having 100 Checksum, hash algorithm can be used this when, for these
Checksum calculates a hash value H1.It is just completed to this signature.
Step 202) uses " signature acquisition equipment " to complete fingerprint collecting；
Then there are also the link of fingerprint collecting, 1 and the 0 of above-mentioned checksum binary digit is corresponded to " signature is adopted
In collection equipment " lattice.Number appears dimmed for 1 lattice, and the lattice of number 0 is shown as white.Then at this
Fingerprint is acquired above, and also fingerprint is shown in lattice described in " signature acquisition equipment ".Corresponding Checksum is calculated,
One hash value H2 is also calculated to all Checksum, fingerprint collecting terminates.
Step 203) obtains the time of contract signature, by the contract time of signature is upper and hash value H1 and hash value H2 calculating one
A hash value H3；Above three cryptographic Hash is shown in specified position；
When contract is signed, a time is also had.By above-mentioned hash value H1 and hash value H2 along with contract is signed
Time, three values calculate a hash value H3 as an input again.Specified position is the last of electronic contract.
3 hash values, H1, H2, H3 ensure that there are also the uniqueness of fingerprint for Current Content and signature.This uniqueness is not
Pipe can be accomplished on line or under line.
So far, a complete electronic contract is carried out, and for the signatory of contract, there are also the complete of treaty content
Property have a guarantee, the authoritative of signatory is guaranteed that the integrality of treaty content is by above-mentioned by signature and fingerprint
Checksum guarantees with hash value.
Step 204) shows signature and fingerprint when electronic contract is electronically shown, with encrypted test mode；
But for electronic version, signature and fingerprint may be plagiarized, as long as because electronic version has original material
Material, material can be amplified, and then obtain clearly signature and fingerprint.So need a method to solve this problem,
When signing a contract, one " the authorities Q1 of electronic contract equipment is provided " is needed, this authorities needs contract of guarantee
When electronically display, signature and fingerprint, that is, the contract of electronic edition are shown with encrypted test mode, can not be seen " in plain text
The signature and fingerprint of form ".The online verification mode of authorities Q1, such as Q1 can be used to this part in the verifying of electronic version
Contract issues a certificate, we authenticate this part of certificate using when electronically access.
Step 205) prints signature and fingerprint when printing electronic contract in clear text manner.
When this part of Print Contract comes out, need to print signature and fingerprint in clear text manner.And it prints
Next contract needs the Checksum of clear display lattice and each row, and the Checksum in terms of signature and fingerprint is shown,
It can be shown by the way of attached sheet, for example show all Checksum using attached sheet 1, then signed and put in attached sheet 1
It shows greatly, fingerprint amplification is shown in attached sheet 2, this when, attached sheet completely showed that Checksum, signature and fingerprint are also put
To being shown in attached sheet.
Step 206) verifies the contract of papery:
After this part of electronic contract prints, it can go to calculate Checksum and hash value by way of observation, then
The integrality of current this part of contract can be verified.Fingerprint and signature are all traditional font display modes, can be verified, should
Step specifically includes:
The Serial No. of every row lattice composition of treaty content is counted, input validation code algorithm obtains check code, by this
The check code that check code is successively shown with signature attached sheet, fingerprint attached sheet is compared；
The Serial No. of every row lattice composition in statistics signature region, input validation code algorithm obtain check code, will be upper
The check code of all rows calculates a hash value H11；
The Serial No. of every row lattice composition of finger-print region is counted, input validation code algorithm obtains check code, will be upper
The check code of all rows calculates a hash value H21；
A hash value H31 is calculated based on contract time of signature, hash value H1 and hash value H2；
Above three cryptographic Hash is successively compared with three cryptographic Hash H1, H2, H3.
It should be noted last that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting.Although ginseng
It is described the invention in detail according to embodiment, those skilled in the art should understand that, to technical side of the invention
Case is modified or replaced equivalently, and without departure from the spirit and scope of technical solution of the present invention, should all be covered in the present invention
Scope of the claims in.
Claims (11)
1. a kind of generation method of electronic contract, which comprises
Every row of the electronic contract paper of blank is divided into non-content region and content area；
When treaty content is added on electronic contract paper, the check code of every row content area is calculated, the non-of this line is put into
Content area；
The check code of all treaty contents is written in signature region；The verification of all treaty contents is written in finger-print region
Code.
2. the generation method of electronic contract according to claim 1, which is characterized in that the electronic contract paper of the blank
The content area of every row is divided into several lattices.
3. the generation method of electronic contract according to claim 2, which is characterized in that the every row content area of calculating
Check code specifically includes:
Treaty content is digitized using lattice；Wherein, occupied lattice number 1 indicates, without occupied small
Grid number 0 indicates；The occupied lattice refer to the word fallen in lattice reach lattice area two/
One and half more than；It is described to refer to that the word fallen in lattice is less than lattice area without occupied lattice
Half；
By lattices all in a line one Serial No. of corresponding number composition；
By Serial No. input validation code algorithm, a check code is calculated.
4. the generation method of electronic contract according to claim 3, which is characterized in that described that institute is written in signature region
There is the check code of treaty content；It specifically includes:
S1) if signature region can show the check code of all treaty contents, into S3)；Otherwise, into S2)；
S2) using multirow as a line, the corresponding number of lattices all in every row is reformulated into a Serial No., then again
Check code is calculated, into S3)；
S3) the 1 of the binary digit of all check codes and 0 are corresponded in the lattice of content area in signature region；Number
The lattice that word is 1 appears dimmed, and the lattice of number 0 is shown as white.
5. the generation method of electronic contract according to claim 3, which is characterized in that described that institute is written in finger-print region
There is the check code of treaty content；It specifically includes:
T1) if finger-print region can show the check code of all treaty contents, into T3)；Otherwise, into T2)；
T2) using multirow as a line, the corresponding number of lattices all in every row is reformulated into a Serial No., then again
Check code is calculated, into T3)；
T3) the 1 of the binary digit of all check codes and 0 are corresponded in the lattice of content area of finger-print region；Number
The lattice that word is 1 appears dimmed, and the lattice of number 0 is shown as white.
6. a kind of electric endorsement method, the electronic contract for generating to method described in one of claim 1-5 is signed,
The described method includes:
Using signature acquisition equipment acquisition signature, the corresponding hash value H1 of the signature is calculated；
Fingerprint is acquired using signature acquisition equipment；Calculate the corresponding hash value H2 of the fingerprint；
The time of acquisition contract signature calculates a hash value H3 based on contract time of signature, hash value H1 and hash value H2；
Above three cryptographic Hash is shown in the specified region of electronic contract.
7. electric endorsement method according to claim 6, which is characterized in that the signature acquisition equipment is with hand-written defeated
Enter the mobile terminal with fingerprint input.
8. electric endorsement method according to claim 6 or 7, which is characterized in that described to be acquired using signature acquisition equipment
Signature, calculates the corresponding hash value H1 of the signature；It specifically includes:
The signature on the signature region for showing all check codes in signature acquisition equipment is obtained, it is small to calculate superimposed every a line
The check code of grid；
Using hash algorithm, the check code based on all rows on signature region calculates a hash value H1.
9. electric endorsement method according to claim 6 or 7, which is characterized in that described that " signature acquisition equipment " is used to adopt
Collect fingerprint；Calculate the corresponding hash value H2 of the fingerprint；It specifically includes:
The fingerprint on the finger-print region for showing all check codes in signature acquisition equipment is obtained, it is small to calculate superimposed every a line
The check code of grid；
Using hash algorithm, the check code based on rows all on finger-print region calculates a hash value H2.
10. electric endorsement method according to claim 6, which is characterized in that the method also includes: in clear text manner
The step of printing electronic contract, specifically includes:
Show the lattice of every row content area in treaty content；
Using an all check code in attached sheet display signature region of signing, signature is displayed magnified in the page；
Show that all check codes of finger-print region, fingerprint are displayed magnified in the page using a fingerprint attached sheet；
Print treaty content, signature attached sheet and fingerprint attached sheet.
11. electric endorsement method according to claim 10, which is characterized in that the printing treaty content, signature attached sheet
After fingerprint attached sheet further include: the step of verifying to contract specifically includes:
The Serial No. of every row lattice composition of treaty content is counted, input validation code algorithm obtains check code, by the verification
The check code that code is successively shown with signature attached sheet, fingerprint attached sheet is compared；
The Serial No. of every row lattice composition in statistics signature region, input validation code algorithm obtains check code, by all rows
Check code be based on hash algorithm calculate a hash value H11；
The Serial No. of every row lattice composition of finger-print region is counted, input validation code algorithm obtains check code, by all rows
Check code be based on hash algorithm calculate a hash value H21；
A hash value H31 is calculated based on contract time of signature, hash value H1 and hash value H2；
Above three cryptographic Hash H11, H21 and H31 are successively compared with three cryptographic Hash H1, H2 and H3 in fingerprint attached sheet
It is right.
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| CN201910542374.9A CN110363027B (en) | 2019-06-21 | 2019-06-21 | Electronic contract generation and electronic signature method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111046406A (en) * | 2019-12-13 | 2020-04-21 | 重庆乔松信息技术有限公司 | Storage system and method of document structure |
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