CN103455741A - Character-based on-line handwriting authentication template extension method - Google Patents
Character-based on-line handwriting authentication template extension method Download PDFInfo
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- CN103455741A CN103455741A CN2013104052072A CN201310405207A CN103455741A CN 103455741 A CN103455741 A CN 103455741A CN 2013104052072 A CN2013104052072 A CN 2013104052072A CN 201310405207 A CN201310405207 A CN 201310405207A CN 103455741 A CN103455741 A CN 103455741A
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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
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
- G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
Abstract
A character-based on-line handwriting authentication template extension method is characterized by comprising the following steps that at an on-line handwriting authentication phase of an authentication system, the authentication system presents registered and unregistered standard characters in any order for a user to log in at the same time; the user to log in sequentially writes in an order presented by the standard characters and submits test handwriting corresponding to the standard characters within a specified time; the test handwriting corresponding to the standard characters submitted by the user is compared with corresponding register handwriting in a database by the authentication system, the user to log in passes the handwriting authentication if all the handwriting comparisons show that the test handwriting is the genuine handwriting; meanwhile, the registration of the test handwriting, submitted by the user to log in, corresponding to the standard characters, is finished automatically by the authentication system according to the handwriting registration procedures. The method has the beneficial effect that the quantity of registered handwriting is increased under the situation of not increasing the operation procedures at the user registration stage, thus the security of the system is improved.
Description
Technical field
The invention belongs to information security field, particularly a kind of template extending method of the online handwriting authentication based on character.
Background technology
The online handwriting authentication refers to the person's handwriting that utilizes special input equipment to obtain online the user, thereby realizes through the individualized feature that wherein institute's aquatic weeds is contained the technology that user identity is differentiated.
Chinese patent application " two-layer on-line authentication system and authentication method based on user ID and person's handwriting " (application number: 2013103166682), disclose the double-deck on-line authentication system based on user ID and handwriting.Under worst case, the safety of system depends on second layer person's handwriting Verification System, and the registration person's handwriting group number that it and user submit at registration phase and the training of employing classic method obtain the factor analysis such as reliability of authenticator.So-called worst case refers to that the authentication based on user ID is broken and user's response authentication system alarm not.
In the situation that current authentication device training algorithm is difficult to obtain, break through, the registration person's handwriting group number that the user submits to is more, and system is safer.But the inconvenience that must bring the user to use like this.In the situation that do not increase user's registration phase operating process, increase registration person's handwriting group number and just seem particularly important.
Summary of the invention
The purpose of this invention is to provide a kind of template extending method and system that can not increase in extra person's handwriting register flow path situation the online handwriting authentication based on character that automatically increases registration person's handwriting group number, to overcome the deficiencies in the prior art.
To achieve these goals, the technical solution adopted in the present invention is:
A kind of template extending method of the online handwriting authentication based on character, be characterized in: in the online handwriting authentication phase of Verification System, described Verification System is to treat that login user presents registered and unregistered standard character in any order simultaneously, treat the test person's handwriting that order is write successively and submission is corresponding with standard character that login user presents by standard character within the time of appointment, in the test person's handwriting corresponding with registered standard character that described Verification System is submitted the user to and database, corresponding registration person's handwriting is compared, if it is true person's handwriting that all person's handwriting comparisons all show to test person's handwriting, treat that login user authenticates by person's handwriting, simultaneously, described Verification System will treat that the test person's handwriting corresponding with unregistered standard character that login user is submitted to completes registration automatically by the person's handwriting register flow path,
Wherein, in the standard character presented, registered and unregistered standard character is all chosen at random, and the registered standard character number of at every turn choosing can be different, but at least are greater than certain threshold value;
Described presenting in any order refers to and treats that the order that login user presents by standard character can't infer that it is registered or unregistered certain standard character;
Described registered standard character refers to that the user has submitted the registration writing sample group corresponding with standard character to, based on registration writing sample group, training obtains person's handwriting authenticator and relevant information, and the character in the log-on message that adds this standard character, the registration writing sample group corresponding with this standard character, the authenticator obtained based on this registration writing sample group training and other user profile to user.Described unregistered standard character refers in the self-defining standard character set of described Verification System the standard character that does not meet registered standard character definition;
Described standard character is the character that standard is write pattern and the form of expression that has be widely used at present, widely used character comprises Chinese character, English word etc., the form of expression of Chinese character comprises the Song typeface, imitation Song-Dynasty-style typeface etc., and the form of expression of English word comprises Calibri etc.For making person's handwriting too not simple, the standard character in the self-defining standard character set of described Verification System should at least comprise certain stroke number.
Describedly treat that login user refers to and propose authentication application and identity does not obtain the user that described Verification System confirms;
Beneficial effect of the present invention is: can increase registration person's handwriting group number in the situation that do not increase user handwriting registration operating process, thus the security that improves Verification System.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is person's handwriting register flow path figure of the present invention.
Fig. 3 is that the person's handwriting authentication and the template that the present invention is based on standard character expand process flow diagram.
The renewal process flow diagram that Fig. 4 is set A 1 of the present invention and set A 2.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
If set C means the self-defining standard character set of described Verification System, set A means registered standard character set, set A 1 means the registered standard character set that described Verification System is chosen at random from set A, set A 2 means to deduct from set C the unregistered standard character set of choosing at random set A, set B means that the user registers the set of person's handwriting group, set W means that the user shows the set of person's handwriting, set V means the set that the set of authenticator, JS are selected registered standard character sequence number.
Verification System of the present invention comprises (Fig. 1):
Show person's handwriting register interface 1000: described Verification System presents the person's handwriting register interface for the user.
Person's handwriting registration 2000; In this stage, the registration person's handwriting group of corresponding standard character is write and submitted to several standard characters that the user presents successively according to described Verification System one by one by handwriting input device, Verification System is random from every group of registration person's handwriting submitting to specifies one to register writing sample, extract the demonstration person's handwriting of the two-dimensional static font information of this registration writing sample as this group registration person's handwriting, based on each group registration person's handwriting, adopt traditional person's handwriting register method training to obtain the authenticator of this group person's handwriting.The unique identity recognition number that is user assignment according to described Verification System; Standard character set, the user that described Verification System is presented to the user writes successively and the registration person's handwriting group set corresponding with the standard character set submitted to, from the set of the demonstration person's handwriting that comprises two-dimensional static font positional information of each registration person's handwriting group appointment, the authenticator set obtained based on each registration person's handwriting group training, deposit in the lump database in.Every group of time of leakage first of registering the person's handwriting group of described Verification System initialization, registered and unregistered standard character set A 1, A2 initial value were sky, are sky the update time of registered standard character sequence number collection JS and JS as empty.
Consider the security of described Verification System and the convenience that the user uses, the minimum value of the group number of the registration person's handwriting that need to submit at registration phase the user presets; Especially, every group of registration person's handwriting of submission is the registration writing sample set that the registration writing sample consistent by content forms, further, and the content difference of the difference registration person's handwriting group that requires the user to submit to.Wherein, writing sample refers to a person's handwriting of user writing, take Chinese character as example, and person's handwriting consists of one group of orderly stroke, and stroke refers to the basic comprising unit of Chinese character, such as horizontal, vertical, left, flick, folding, points, hooks, mention etc.; Wherein, content unanimously refers to that the stroke of formation person's handwriting and the front and back that stroke occurs are sequentially consistent, and the content difference refers to the situation that does not meet the consistent definition of content;
Wherein, standard character is the character that standard is write pattern and the form of expression that has be widely used at present, widely used character is including, but not limited to Chinese character, English word etc., the form of expression of Chinese character includes but are not limited to the Song typeface, imitation Song-Dynasty-style typeface etc., and the form of expression of English word includes but are not limited to Times New Roman, Calibri etc.For making person's handwriting too not simple, the standard character that Verification System is chosen should at least comprise certain stroke number.
Standard character is presented to and is treated that login user is as writing reference for authentication phase.During each authentication, in any order to treating that login user presents the registered and unregistered standard character in set A 1 and A2.Wherein, registered and unregistered standard character is all chosen at random, and the registered standard character number of at every turn choosing can be different, but at least are greater than certain threshold value.
Wherein, the register flow path of tradition online handwriting authentication method comprises that data acquisition, pre-service, feature extraction, sorter training, data deposit database in, concrete, on every group of registration person's handwriting, obtain the representative of consumer writing style and have the optimal feature subset formed than the feature of fine resolution by feature extraction and feature selecting algorithm, the optimal feature subset characteristic value data training based on every group of registration writing sample obtains sorter.
Describedly treat that login user refers to and propose authentication application and identity does not obtain the user that described Verification System confirms.
Show Verification System login interface 3000: described Verification System is treated the login user identity for authentication and is presented display interface.
Person's handwriting authentication 4000: the described person's handwriting identifying procedure based on standard character comprises: at first, described Verification System presents registered standard character in set A 1 and the unregistered standard character in set A 2 in any order to the user.Treat that the order that login user presents according to standard character writes and submit to corresponding test person's handwriting successively, according to the authentication result judgement of the corresponding authenticator pair test person's handwriting corresponding with registered standard character, treat whether login user is real user.If it is true person's handwriting that all authenticators are all differentiated corresponding test person's handwriting, described Verification System differentiation treats that login user is real user, simultaneously, the described Verification System pair test person's handwriting corresponding with unregistered standard character completes the person's handwriting registration automatically by the person's handwriting register flow path, otherwise, described Verification System differentiation treats that login user is to forge the user, simultaneously, gives up the test writing sample for the treatment of that login user is submitted to.The person's handwriting identifying procedure finishes.
Described presenting in any order refers to and treats that the order that login user presents by standard character can't infer that it is registered or unregistered certain standard character.
Described registered standard character refers to that the registration writing sample group training corresponding with standard character of submitting to based on the user obtains the standard character of authenticator.Described unregistered standard character refers to the standard character that does not obtain authenticator in the self-defining standard character set of described Verification System;
The present invention, before carrying out the person's handwriting authentication, first will carry out the person's handwriting registration, and person's handwriting register flow path of the present invention (Fig. 2) step specifically comprises:
Step 2100: start; Particularly, mean to start to carry out person's handwriting registration operating process.
Step 2200: initialization; Particularly, if set C means the self-defining standard character set of described Verification System, set A means that described Verification System presents to user's standard character set at user's registration phase, set B means that the user writes and the set of several registration person's handwriting groups of submitting to successively at registration phase, set W means the show pen trace set that comprises two-dimentional font information extracted from user's registration writing sample, set V means the set of the authenticator that training obtains based on registration person's handwriting group, A, B, W, V initial value are sky, i means person's handwriting group sequence number, and initial value is 1.
Step 2300: select and present standard character; Particularly, Verification System is chosen at random a standard character from set C-A, is made as a
iit is U that display device by described Verification System is presented to customer identification number
idthe user.
Wherein, the display device of described Verification System can be the display of desktop computer, or the display screen of mobile device etc.
Step 2400: obtain corresponding person's handwriting group; Particularly, customer identification number is U
idthe user write successively and submission and a
icorresponding registration writing sample set
b
i∈ B, wherein B
imean the standard character a that this user presents according to described Verification System
ithe i group registration person's handwriting of writing and submitting to,
k the registration writing sample that means the i group registration person's handwriting that this user submits to, 1≤k≤r
i, r
imean the number of writing sample in this group registration person's handwriting, and require r
i>=1, the user is that the registration writing sample number submitted to of every group of registration person's handwriting can be different but at least submit one at registration phase.
Step 2500: person's handwriting group registration; Particularly, the registration person's handwriting group B that described Verification System is submitted to according to the user
i, according to the register flow path of traditional online handwriting authentication, complete registration person's handwriting group B
iperson's handwriting registration, obtain registering person's handwriting group B
iauthenticator v
ifrom registration person's handwriting group B
iregistration writing sample of middle random choose, extract its two-dimensional static font positional information as registration person's handwriting group B
ithe demonstration person's handwriting, establishing this demonstration person's handwriting is w
i, this demonstration person's handwriting is for presenting to and treat that login user is as the reference information of writing in the described Verification System of handwriting authentication phase.
Step 2600: log-on data is upgraded; Particularly, described Verification System is done following renewal operation:
A=A+{a
i, B=B+{B
i, W=W+{w
i, V=V+{v
i, sequence number i=i+1.
Step 2700: whether the user requires to stop; Particularly, the system interface that the user can present by described Verification System requires to stop register flow path.If customer requirements stops, enter step 2800, described Verification System is U to customer identification number
idthe registration person's handwriting group number submitted to of user checked; Otherwise, enter step 2300, continue the person's handwriting register flow path.
Step 2800: whether judgement registration person's handwriting group number reaches minimum requirements; Particularly, described Verification System will judge that customer identification number is U
iduser writing and the group number of the registration person's handwriting submitted to whether surpass minimum value, if so, enter step 2900, person's handwriting succeeds in registration, described Verification System is ended the person's handwriting registration process; Otherwise, entering step 2300, described Verification System will require this user to continue the person's handwriting registration process.
If N
minmean that the user submits the minimum value of registration person's handwriting group number, N at registration phase
min>=2, N
minconcrete value need to consider the convenience that the security of Verification System and user use and preset.
Step 2900: person's handwriting succeeds in registration; If it is U that N means customer identification number
idthe registration person's handwriting group number submitted at registration phase of user, N>=N
min, after person's handwriting succeeds in registration, it is U that described Verification System obtains user ID
idrelated registration information, they comprise N standard character set A={ a that the described Verification System of registration phase presents
1, a
2..., a
n; This user writes and the set B of corresponding with set A N the registration person's handwriting group submitted to={ B successively at registration phase
1, B
2..., B
n; Verification System is from registration person's handwriting group B
iin the demonstration person's handwriting w that comprises the two-dimensional static font information that chooses at random
ithe show pen trace set W={w formed
1, w
2..., w
n; By based on registration person's handwriting group B
ithe authenticator v that training obtains
ithe authenticator set V={v formed
1, v
2..., v
n, every group of time of leakage first of registering the person's handwriting group of described Verification System initialization, registered and unregistered standard character set A 1, A2 initial value were sky, are sky the update time of registered standard character sequence number collection JS and JS as empty.
Especially, only, after person's handwriting succeeds in registration, the user just can carry out the identifying procedure of described Verification System.
Step 2A00: finish.Particularly, mean that person's handwriting registration operating process finishes.
The person's handwriting authentication and template expansion flow process (Fig. 3) concrete steps that the present invention is based on standard character comprise:
Step 4100: the person's handwriting authentication and the template that start based on standard character expand flow process, treat that login user shows the User Identity U of user identity to described Verification System submission
id.
Step 4200: the set A 1 of time-based section and A2 upgrade: described Verification System judges whether unregistered standard character set A 2 is empty, if described Verification System is carried out the renewal operation of pair set JS and set A 2; Otherwise whether described Verification System criterion character ordinal number set JS needs to upgrade, particularly, the described Verification System reading system current time also calculates the time interval t of last update standard character sequence number set JS, establishes ts
minmean time interval threshold value, time interval threshold value ts
minvalue according to the security of described Verification System, preset.Further, described Verification System judges whether time interval t exceeds threshold value ts
minif exceed threshold value ts
min, described Verification System is carried out the renewal operation of pair set JS and set A 2; Otherwise described Verification System not pair set JS and A2 is upgraded.Finally, read corresponding registered standard character as the renewal to A1 from set A by the sequence number in set JS after upgrading.
The renewal operation that described Verification System is carried out pair set JS and set A 2 specifically comprises: described Verification System is chosen at random M1 registered standard character sequence number and is upgraded registered standard character sequence number set JS from set A, and using and carry out the updated time of the system time of this renewal operation as set JS, then, choose at random M-M1 standard character from set C-A and be saved to unregistered standard character set A 2;
Wherein M means that described Verification System presents to the registered and unregistered standard character number sum for the treatment of login user, and M1 means that described Verification System presents to the registered standard character number for the treatment of login user.The value of M and M1 according to belong to the user the registered person's handwriting group be not used the number and determine, during each person's handwriting authentication, the value of M and M1 all can be different, but must meet following relation: M >=M1 >=T1, M >=T2, T2>T1>0, the setting of threshold value T1 should meet the minimum requirements to security of person's handwriting Verification System, and the convenience that threshold value T2 is used with the user and the security of system comprehensively preset.
The described registered person's handwriting group be not used refers in the person's handwriting authentication phase, and the standard character corresponding with registered person's handwriting group do not chosen to present to by described Verification System and treated login user.
Step 4300: present registered and unregistered standard character; Unregistered standard character in registered and set A 2 in the set A 1 of having chosen is presented in any order and treated login user.Recording the system time of presenting to when login user is the start time of standard character authentication, and initialization standard character authentication number of times is 0.
Described presenting in any order refers to and treats that the order that login user presents by standard character can't infer that it is registered or unregistered certain standard character.
Step 4400: treat that the order that login user presents by standard character writes and submit to corresponding test person's handwriting: the user is according to the standard character information presented on display device, the test pen trace set H={h that the order presented according to standard character is write successively and submission is corresponding with standard character
1, h
2..., h
m.If
Be and registered standard character
Corresponding M1 test writing sample, i
xmean the test writing sample
sequence number in test person's handwriting sample set H, js
xmean registered standard character
sequence number in the standard character set A,
be and registered standard character
corresponding test person's handwriting, 1≤x≤M1.
be and unregistered standard character A2={a
1, a
2...,, a
m-M1m-M1 corresponding test writing sample, k
ymean the test writing sample
sequence number in test person's handwriting sample set H, 1≤y≤M-M1.
Step 4500: judge that writing time is not overtime and authenticate not superthreshold of number of times; Particularly, the system time of usining when carrying out this step consuming time as the authentication of standard character person's handwriting to time interval of the authentication start time of the person's handwriting based on standard character, standard character person's handwriting authentication time number variable is from adding 1, if standard character person's handwriting authentication not superthreshold 1 consuming time and standard character person's handwriting authentication number of times are less than threshold value 2, enter step 4600, otherwise, enter step 4B00.
Wherein, the value of threshold value 1 and threshold value 2 all presets according to the security of Verification System and the convenience of user's use.
Step 4600: the test person's handwriting to registered standard character carries out the person's handwriting authentication.Particularly, establish
the test pen trace set corresponding with registered standard character.Wherein,
mean and j
kindividual registered standard character
corresponding test person's handwriting, js
kmean registered standard character
sequence number in the standard character set A, i
kmean the test writing sample
sequence number in test person's handwriting sample set H, 1≤js
k≤ N, 1≤i
k≤ M, 1≤k≤M1, N means that identify label number is U
idthe group number of the registration person's handwriting group that the user submits at registration phase.Adopt traditional authentication method, authenticator
return the test person's handwriting
authentication result, if authenticator
differentiate the test person's handwriting
for true person's handwriting, return very, otherwise return to vacation.Note Q
accmeaning to differentiate rreturn value as a result is genuine authenticator number.
Step 4700: authenticate by person's handwriting: and if only if M1 all authenticators
all return very, i.e. Q
accduring=M1, jump to step 4800, Verification System accepts to claim that identify label number is U
idthe user be real user, otherwise, be not accepted as real user, be back to step 4400, again submit the test person's handwriting to.
Step 4800: unregistered test person's handwriting is registered: for unregistered standard character set A 2={a
1, a
2..., a
m-M1and with described set A 2 test pen trace set one to one
by the person's handwriting register flow path, registered successively, to standard character a
ithe test writing sample that ∈ A2 is corresponding
adopt traditional person's handwriting training method to obtain authenticator v
i, extract
two-dimentional font information as this group person's handwriting demonstration person's handwriting w
i, last, by standard character a
i, the enrollment person's handwriting group formed by the test writing sample
show person's handwriting w
iauthenticator v
iadding user ID to is U
idthe registration handwriting data in, A=A+{a
i, B=B+{B
i, W=W+{w
i, V=V+{v
i, 1≤i≤M-M1; Repeat above-mentioned registration process, until in all standard characters in A2 set and H2 set the test person's handwriting corresponding with standard character all to be added to user ID be U
idthe registration handwriting data in.
Step 4900: empty unregistered standard character set A 2.
Step 4A00: show to treat the customer identification number U that the identity of login user is claimed with it
idthe user identity of representative is consistent.Jump to step 4C00.
Step 4B00: show the customer identification number U that test subscriber's identity is claimed with it
idthe user identity of representative is inconsistent.Jump to step 4C00.
Step 4C00: the person's handwriting authentication based on standard character and template expand flow process and finish.
The present invention is based on more new technological process (Fig. 4) of the set A 1 of time period and A2, step specifically comprises:
Step 4210: start; Particularly, mean to start to carry out set A 1 and the A2 renewal operating process of time-based section.
Step 4220: judge whether set A 2 is empty, if it is empty, enters step 4260, otherwise, enter step 4230.
Step 4230: read the current time; Particularly, read described Verification System and carry out the system time while upgrading operation.
Step 4240: computing time interval; Particularly, the system time calculated when carrying out this step was gathered the time interval that JS upgrades to last time.If be empty update time last time of set JS, mean that the user carries out authentication for the first time, jump to step 4260, directly enter more new technological process, otherwise the system time of usining when carrying out this step was gathered the JS renewal as the time interval to last time.
Step 4250: whether surpass threshold value; Particularly, judge that the time interval, whether over threshold value, if surpass, enters step 4260; Otherwise enter step 4290.
Step 4260: upgrade sequence number set JS; Particularly, described Verification System random choose M1 registered standard character sequence number from set A upgraded sequence number set JS.If sequence number set JS and former set JS after upgrading are identical, repeat above-mentioned random choose process.Finally, read corresponding registered standard character as the renewal to A1 from set A by the sequence number in set JS after upgrading.
Wherein M means that described Verification System presents to the registered and unregistered standard character number sum for the treatment of login user, and M1 means that described Verification System presents to the registered standard character number for the treatment of login user.The value of M and M1 according to belong to the user the registered person's handwriting group be not used the number and determine, during each person's handwriting authentication, the value of M and M1 all can be different, but must meet following relation: M >=M1 >=T1, M >=T2, T2>T1>0, the setting of threshold value T1 meets the system minimum security requirement as prerequisite in the time of should take a person's handwriting authentication, and the convenience that threshold value T2 is used with the user and the security of system comprehensively preset.
The described registered person's handwriting group be not used refers in the person's handwriting authentication phase, and the standard character corresponding with registered person's handwriting group do not chosen to present to by described Verification System and treated login user.
Step 4270: record update time; Particularly; Described Verification System is usingd the update time of 4260 the time of performing step as sequence number set JS.
Step 4280: upgrade unregistered standard character set A 2; Particularly; Described Verification System is chosen at random M-M1 standard character and is upgraded unregistered standard character set A 2 from set C-A.
Step 4290: the set A 1 of time-based section and A2 more new technological process finish.
The not detailed disclosed part of the present invention belongs to the known technology of this area.Although the above is described the illustrative embodiment of the present invention; so that the technician of present technique neck understands the present invention; but should be clear; the invention is not restricted to the scope of embodiment; to those skilled in the art; as long as various variations appended claim limit and definite the spirit and scope of the present invention in, these variations are apparent, all innovation and creation that utilize the present invention to conceive are all at the row of protection.
Claims (3)
1. the template extending method of online handwriting based on a character authentication, it is characterized in that: in the online handwriting authentication phase of Verification System, described Verification System is to treat that login user presents registered and unregistered standard character in any order simultaneously, treat the test person's handwriting that order is write successively and submission is corresponding with standard character that login user presents by standard character within the time of appointment, in the test person's handwriting corresponding with registered standard character that described Verification System is submitted the user to and database, corresponding registration person's handwriting is compared, if it is true person's handwriting that all person's handwriting comparisons all show to test person's handwriting, treat that login user authenticates by person's handwriting, simultaneously, described Verification System will treat that the test person's handwriting corresponding with unregistered standard character that login user is submitted to completes registration automatically by the person's handwriting register flow path,
Wherein, in the standard character presented, registered and unregistered standard character is all chosen at random, and the registered standard character number of at every turn choosing can be different, but at least are greater than certain threshold value;
Described presenting in any order refers to and treats that the order that login user presents by standard character can't infer that it is registered or unregistered certain standard character;
Described registered standard character refers to that the registration writing sample group training corresponding with standard character of submitting to based on the user obtains the standard character of authenticator; Described unregistered standard character refers to the standard character that does not obtain authenticator in the self-defining standard character set of described Verification System;
Described standard character is the character that standard is write pattern and the form of expression that has be widely used at present, widely used character comprises Chinese character, English word etc., the form of expression of Chinese character comprises the Song typeface, imitation Song-Dynasty-style typeface etc., and the form of expression of English word comprises Calibri etc.; For making person's handwriting too not simple, the standard character in the self-defining standard character set of described Verification System should at least comprise certain stroke number;
Describedly treat that login user is to point to described Verification System to propose the user that authentication application and identity are not obtained confirmation.
2. the template extending method that the online handwriting based on character according to claim 1 authenticates, it is characterized in that: set set C and mean the self-defining standard character set of described Verification System, set A means that described Verification System presents to user's registered standard character set at user's registration phase, set A 1 means the some registered standard character set that described Verification System is chosen at random from set A, set A 2 means to deduct from set C the unregistered standard character set of choosing at random set A, set B means that the user registers the set of person's handwriting group, set W means that the user shows the set of person's handwriting, set V means the set of authenticator,
The concrete steps of described method are:
First step: upgrade registered standard character set A 1 and unregistered standard character set A 2;
Second step: registered in set A 1 and A2 and unregistered standard character are presented in any order and treated login user, and recording the system time of presenting to when login user is the start time of standard character authentication, and initialization standard character authentication number of times is 0;
Third step: treat that login user is according to presented standard character information, the test pen trace set H={h that the order presented according to standard character is write successively and submission is corresponding with standard character
1, h
2..., h
m); If
Be and registered standard character
Test writing sample, i for M1 one to one
xmean the test writing sample
sequence number in test person's handwriting sample set H, js
xmean registered standard character
sequence number in the standard character set A,
be and registered standard character
corresponding test person's handwriting, 1≤x≤M1;
be and unregistered standard character A2={a
1, a
2..., a
m-M1m-M1 corresponding test writing sample, k
ymean the test writing sample
sequence number in test person's handwriting sample set H, 1≤y≤M-M1;
Wherein, M means that described Verification System presents to the registered and unregistered standard character number sum for the treatment of login user, and M1 means that described Verification System presents to the registered standard character number for the treatment of login user; The value of M and M1 according to belong to the user the registered person's handwriting group be not used the number and determine, during each person's handwriting authentication, the value of M and M1 all can be different, but must meet following relation: M >=M1 >=T1, M >=T2, T2>T1>0, the setting of threshold value T1 meets the system minimum security requirement as prerequisite in the time of should take a person's handwriting authentication, and the convenience that threshold value T2 is used with the user and the security of system comprehensively preset;
The described registered person's handwriting group be not used refers in the person's handwriting authentication phase, and the standard character corresponding with registered person's handwriting group never chosen to present to by described Verification System and treated login user;
The 4th step: the system time of usining when carrying out this step consuming time as the authentication of standard character person's handwriting to time interval of standard character person's handwriting authentication start time, standard character person's handwriting authentication time number variable is from adding 1, if standard character person's handwriting authentication not superthreshold 1 consuming time and standard character person's handwriting authentication number of times are less than threshold value 2, enter step 5, otherwise, enter the tenth step, wherein, the value of threshold value 1 and threshold value 2 all presets according to the security of described Verification System and the convenience of user's use;
The 5th step: set
the test pen trace set corresponding with registered standard character, wherein,
mean and js
kindividual registered standard character
corresponding test person's handwriting, js
kmean registered standard character
sequence number in the standard character set A, i
kmean the test writing sample
sequence number in test pen trace set H, 1≤js
k≤ N, 1≤i
k≤ M, 1≤k≤M1, N means to treat the group number of login user in the registration person's handwriting group of user's registration phase submission of described Verification System, adopts traditional authentication method, authenticator
return the test person's handwriting
authentication result, if authenticator
differentiate the test person's handwriting
for true person's handwriting, return very, otherwise return to vacation, note Q
accmeaning to differentiate rreturn value as a result is genuine authenticator number;
The 6th step: when all M1 authenticator
all return very, i.e. Q
accduring=M1, jump to the 7th step, otherwise, be not accepted as real user, be back to third step;
The 7th step: for unregistered standard character set A 2={a
1, a
2..., a
m-M1and with described set A 2 test pen trace set one to one
by the person's handwriting register flow path, registered successively, to standard character a
ithe test writing sample that ∈ A2 is corresponding
adopt traditional person's handwriting training method to obtain authenticator v
iextract
two-dimentional font information as this group person's handwriting demonstration person's handwriting w
ifinally, by standard character a
ithe enrollment person's handwriting group formed by the test writing sample
show person's handwriting w
i, authenticator v
iadding user ID to is U
idthe registration handwriting data in, A=A+{a
i, B=B ten { B
i, W=W+{w
i, V=V+{v
i, 1≤i≤M-M1; Repeat above-mentioned registration process, until in all standard characters in A2 set and H2 set the test person's handwriting corresponding with standard character all to be added to user ID be U
idthe registration handwriting data in;
The 8th step: empty unregistered standard character set A 2;
The 9th step: show to treat that the identity of login user is true identity, the person's handwriting identifying procedure that template expands automatically finishes;
The tenth step: show to treat that the identity of login user is false identity, the person's handwriting identifying procedure that template expands automatically finishes.
3. the template extending method of online handwriting based on character authentication according to claim 2 is characterized in that: set the sequence number set that JS is the registered standard character chosen at random from set A, set ts
minmean time interval threshold value
Described first step idiographic flow is:
Step 1: judge whether set A 2 is empty, if it is empty, enters step 5, otherwise, enter step 2;
Step 2: the system time that reads described Verification System;
Step 3: the system time calculated when carrying out this step was gathered the time interval that JS upgrades to last time, if be empty update time last time of set JS, mean that the user carries out authentication for the first time, jump to step 5, otherwise the system time of usining when carrying out this step was gathered JS to last time and was upgraded as the time interval;
Step 4: judge whether the time interval surpasses threshold value ts
minif, surpass, carry out step 5; Otherwise enter step 8;
Step 5: described Verification System random choose M1 standard character sequence number from set A upgraded sequence number set JS, if sequence number set JS and former set JS after upgrading are identical, repeats above-mentioned random choose process; Finally, read corresponding registered standard character as the renewal to A1 from set A by the sequence number in set JS after upgrading;
Step 6: described Verification System is usingd and is performed step 5 system time update time as registered standard character sequence number set JS;
Step 7: described Verification System is chosen at random M-M1 standard character and is upgraded unregistered standard character set A 2 from set C-A;
Step 8: more new technological process finishes.
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| CN201310405207.2A CN103455741B (en) | 2013-09-06 | 2013-09-06 | Character-based on-line handwriting authentication template extension method |
| PCT/CN2014/085740 WO2015032305A1 (en) | 2013-09-06 | 2014-09-02 | Template expansion method based on online handwriting authentication of characters |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310405207.2A CN103455741B (en) | 2013-09-06 | 2013-09-06 | Character-based on-line handwriting authentication template extension method |
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| CN103455741B CN103455741B (en) | 2017-02-01 |
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| CN111143541A (en) * | 2020-03-07 | 2020-05-12 | 合肥煜极网络科技有限公司 | Character generation system for deep learning based on handwriting |
| CN111310544A (en) * | 2019-12-04 | 2020-06-19 | 湖北工业大学 | Online handwriting authentication method based on characteristic stability and specificity analysis |
| CN111310547A (en) * | 2019-12-04 | 2020-06-19 | 湖北工业大学 | Method for extracting and authenticating stroke order characteristics in online handwriting authentication |
| CN111652032A (en) * | 2019-12-04 | 2020-09-11 | 湖北工业大学 | Handwriting layout characteristic extraction and authentication method in online handwriting authentication |
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| CN116305076A (en) * | 2023-03-30 | 2023-06-23 | 重庆傲雄在线信息技术有限公司 | Signature-based identity information registration sample online updating method, system and storage medium |
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| Publication number | Publication date |
|---|---|
| CN103455741B (en) | 2017-02-01 |
| WO2015032305A1 (en) | 2015-03-12 |
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