CN104009974A - Medical information processing method based on radio frequency identification and providing privacy protection - Google Patents

Abstract

The invention relates to a new smart medical treatment method based on radio frequency identification, in particular to a medical information processing method based on radio frequency identification and providing privacy protection. The medical information processing method aims to solve the problems that malpractice occurs and privacy disclosure of patients occurs in the digital medical treatment process, improves the treatment efficiency of the patients, improves medication safety of the patients and avoids human errors in the digital medical treatment process. Although the measures based on radio frequency identification are more efficient than the traditional digital medical treatment process, privacy disclosure or malpractice occurs due to the fact that the information of the patients may be threatened during the data transmission period. The medical information processing method takes the following effective specific measures of anonymous authentication, diagnostic record encryption, correct relevance of test labels and patient registration labels, checking process recording to prevent medical disputes which may occur in future and drug prescription matching inspection to guarantee medication safety.

Description

A kind of radio frequency identification medical information processing method that secret protection is provided

Technical field

The present invention is a kind of radio-frequency (RF) identification (Radio Frequency Identification that secret protection is provided; RFID) medical information processing method; be mainly used in solving malpractice and privacy leakage problem in digital medical process, belong to technology of Internet of things field.

Background technology

In medical industry, can accelerate the digitlization process of hospital by means of RFID.In hospital management, be equipped with electronic tag can to every doctor, nurse, patient, public Medical Devices, costly medicine, thereby realize easily the tracking of management, critical medical devices and medicine to patient, all right Optimizing Flow, reduce operating cost, improve service quality, work efficiency and management level.

Compared with the flat situation of other industry, RFID is enough to allow people regard with special esteem in the rise of hospitality industry application at present with RFID, and especially in developed countries such as America and Europes, increasing hospital introduces RFID technology in daily management, has greatly improved medical efficiency of operation.But same RFID is also faced with some problems in the application of hospitality industry, as secret protection.

RFID electronic tag is with the communication between read write line based on radio frequency signal, and this makes the information of transmitting between them be exposed to outside completely, if contain responsive privacy information in the medical information transmitting, anyone may obtain easily.This is the place, source that personal secrets problem appears in rfid system, in addition, the limited characteristic of RFID electronic tag own resource (that power supply is supplied with is limited, memory space is little and computing capability weak etc.) has also proposed a difficult problem and very large challenge to the design of rfid system personal secrets mechanism, makes design engineer for the design of security mechanism and choose to be very restricted.

Summary of the invention

Technical problem: in recent years, the digital medical solution based on RFID is all released in much research, to improve patient's drug safety and avoid mistake in digital medical process.Although these measures based on RFID are more efficient than traditional digital medical process, patient's information but may be threatened during transfer of data, thereby causes privacy to expose or malpractice.Therefore, a kind of RFID medical information processing method that secret protection is provided of necessary proposition, it not only can improve patient's medical efficiency, can also protect patient's individual privacy information not revealed, and can not ensure malpractice simultaneously.

Technical scheme: 1) in the stage of registering, system can be mapped patient status's information and RFID tag number, adopt the private key in patient's smart card to carry out data encryption to the numbering of RFID, and store respectively the number information after encrypting into RFID label and background server.

2), in the medical stage, in order to protect patient's privacy of identities, system adopts anonymous authentication mode.When doctor provides after diagnosis, just carry out corresponding stored patient's encryption idagnostic logout with the digital P of background server.Patient utilizes registered mail label to obtain this correspondence numeral P according to certain step, thereby can check the idagnostic logout of oneself.

3), in the chemical examination stage, key will correctly associate blood count test tube and patient status in background server.

4) at examination phase, check that first medical worker will reaffirm patient's legitimacy by registered mail label, it is can be checked after legal that patient is identified.In this stage, the process that patient is checked will go on record, in case the medical tangle that may occur in the future.

5) the drug prescription stage relates generally to drug control, and target ensures that each medicine is all that doctor outputs.The suggestion medicine list that it should be noted that doctor has just generated at background server in the time that doctor completes diagnosis, and this medicine list is corresponding with patient's identity information.After medicine all packs, whether medicine is mated and still need again to verify.

A kind of radio frequency identification medical information processing method that secret protection is provided of the present invention comprises 5 stages, registers, goes to a doctor, chemical examination, inspection and drug prescription, and concrete grammar is as follows:

1) register the stage

Step 11:RFID reader reads the unique number ID of registered mail label _i, intelligent card reading reads patient's smart card;

Step 12:RFID reader is by registered mail label unique number ID _isend to intelligent card reading;

Step 13: intelligent card reading is received ID _iafter, the private key in employing patient smart card is to ID _ibe encrypted operation, obtain patient's anonymous identification I _i=Encrypt (ID _i);

Step 14: intelligent card reading is by patient's anonymous identification I _isend to RFID reader, the latter is by the patient's anonymous identification I receiving _iwrite registered mail label and replace ID _i;

Step 15: intelligent card reading sends patient's anonymous identification I _igive background server is preserved;

2) the medical stage

Step 21: doctor generates a random number r by RFID reader ₁, send random number r ₁give patient's registered mail label;

Step 22: obtain after random number registered mail label result of calculation value , wherein H () is hash function;

Step 23: registered mail label sends (r ₁, x ₁) to RFID reader;

Step 24:RFID reader is by (r ₁, x ₁) being transmitted to background server, background server is verified the correctness of the x1 receiving, is about to received x ₁same calculated value compare, identically represent that patient status is legal, this checking has been hidden its true identity information in the legitimacy of confirming patient;

Step 25: registered mail label generates a random number r ₂, and send it to RFID reader;

Step 26:RFID reader is by random number r ₂be transmitted to background server;

Step 27: background server result of calculation value , wherein P is random number, and by x ₂send to RFID reader;

Step 28:RFID reader sends x ₂give registered mail label, the latter utilizes x ₂deciphering obtains digital P, $P=x_2\⊕H(I_i\⊕r_2);$

3) the chemical examination stage

Step 31:RFID reader generates a random number r ₃, and send it to registered mail label and chemical examination label, be attached on blood count test tube;

Step 32: registered mail label result of calculation value

Step 33: registered mail label is by x ₃send to RFID reader;

Step 34: chemical examination tag computation , wherein ID _jit is the identification number of chemical examination label;

Step 35: chemical examination label sends x' ₃give RFID reader;

Step 36:RFID reader is according to x' ₃obtain ID _jafter, transmission information (ID _j, r ₃, x ₃) to background server;

Step 37: background server is according to information (ID _j, r ₃, x ₃) checking patient legitimacy, if legal, the x that received ₃same calculated value equate, server is by the identification number ID of chemical examination label _jbe inserted in this patient's corresponding record;

4) examination phase

Step 41:RFID reader generates a random number r ₄, and send it to registered mail label;

Step 42: registered mail label result of calculation value $x_4=H(I_i\⊕r_4)\⊕\left(P\right|\left|I_i\right);$

Step 43: registered mail label sends x ₄give RFID reader;

Step 44:RFID reader forwarding messages (r ₄, x ₄) give background server, background server is according to received x ₄with calculate whether equate to judge patient's legitimacy, if result is equal, patient's legitimacy is verified;

Step 45:RFID reader generates a random number r ₅, and by (T _i, r ₅) send to registered mail label, wherein T _iit is current timestamp;

Step 46: registered mail label result of calculation value $x_5=H(I_i\⊕r_5)\⊕\left(T_i\right|\left|P\right|\left|I_i\right);$

Step 47: registered mail label sends x ₅give RFID reader;

Step 48: check that medical worker's label sends ID _kgive RFID reader, wherein ID _kit is the identification number that checks medical worker's label;

Step 49:RFID reader forwarding messages (r ₅, x ₅, ID _k) to background server;

Step 410: background server generating digital signature { r ₅, x ₅, ID _k, this digital signature can be used as the evidence of checking in the future;

5) the drug prescription stage

Step 51: background server generates random number r ₆, send r ₆give RFID reader;

Step 52:RFID reader forwards random number r ₆give medicine label 1;

Step 53: medicine label 1 generates random number r ₇, and result of calculation value , wherein MID ₁it is the identification number of medicine label 1;

Step 54: medicine label 1 sends (x ₆, r ₇) to RFID reader;

Step 55:RFID reader forwards random number r ₆give medicine label 2;

Step 56: medicine label 2 generates random number r ₈, and result of calculation value , wherein MID ₂it is the identification number of medicine label 2;

Step 57: medicine label 2 sends (x ₇, r ₈) to RFID reader;

Step 58: similarly, for medicine label 3, medicine label 4 until medicine label n-1, repeating step 55～step 57;

Step 59:RFID reader forwards random number r ₆give medicine label n;

Step 510: medicine label n generates random number r _n+6, and result of calculation value , wherein MID _nit is the identification number of medicine label n;

Step 511: medicine label n sends (x _n+5, r _n+6) to RFID reader;

Step 512:RFID reader forwards (x _i+5, r _i+6) (1≤i≤n) give background server, background server is according to (the x receiving _i+5) (1≤i≤n) checking (MID _i) (in the drug prescription of 1≤i≤n) whether open doctor, if be verified, (the x that received _i+5) (1≤i≤n) same to calculated value equate, background server just notifies pharmacist powder charge to enter bag, and result of calculation value , by y _ibe stored in background server simultaneously and be attached in the medicine bag label on patient's medicine bag;

Step 513:RFID reader generates a random number r _n+7, send r _n+7give registered mail label and medicine bag label;

Step 514: registered mail label sends result of calculation value give RFID reader, medicine bag label sends result of calculation value $x_{n+7}=H(y_i\⊕r_{n+7})\⊕y_i$ Give RFID reader;

Step 515:RFID reader receives x _n+6and x _n+7after, transmission information (x _n+6, x _n+7, r _n+7) mate checking to background server, i.e. background server checking x _n+6and x _n+7whether respectively with calculated value with equate, and if only if, and checking all equates, just can conclude that this medicine bag do not make mistakes and really belong to patient I _i.

Beneficial effect: the present invention, by adopting RFID technology, can reduce inappropriate medication, strengthen outpatient's (inpatient) medical safety, promotion health care management.Especially, the method has improved medical medical efficiency, has strengthened medical system safety, especially fully takes into account and protected patient user's privacy.Particularly, the method has been taked following useful measure:

1) anonymous authentication;

2) encrypt idagnostic logout;

3) chemical examination label is correctly associated with patient registration's label;

4) record checking process in case the medical tangle that may occur in the future;

5) drug prescription matching check ensures drug safety.

Brief description of the drawings

Fig. 1 is the medical schematic diagram of medical treatment,

Fig. 2 is the schematic flow sheet of registering,

Fig. 3 is medical schematic flow sheet,

Fig. 4 is chemical examination schematic flow sheet,

Fig. 5 is check process schematic diagram,

Fig. 6 is drug prescription schematic flow sheet.

Embodiment

1) register the stage

Register flow process as shown in Figure 2, and its concrete steps are as follows.

Step 1:RFID reader reads the unique number ID of registered mail label _i, intelligent card reading reads patient's smart card;

Step 2:RFID reader is by registered mail label unique number ID _isend to intelligent card reading;

Step 3: intelligent card reading is received ID _iafter, the private key in employing patient smart card is to ID _ibe encrypted operation, obtain patient's anonymous identification I _i=Encrypt (ID _i);

Step 4: intelligent card reading is by patient's anonymous identification I _isend to RFID reader, the latter is by the patient's anonymous identification I receiving _iwrite registered mail label and replace ID _i;

Step 5: intelligent card reading sends patient's anonymous identification I _igive background server is preserved.

2) the medical stage

As shown in Figure 3, its concrete steps are as follows for medical flow process.

Step 1: doctor generates a random number r1 by RFID reader, sends the registered mail label of random number r1 to patient;

Step 2: obtain after random number registered mail label result of calculation value , wherein H () is hash function;

Step 3: registered mail label sends (r ₁, x ₁) to RFID reader;

Step 4:RFID reader is by (r ₁, x ₁) being transmitted to background server, background server is verified the correctness of the x1 receiving, is about to received x ₁same calculated value compare, identically represent that patient status is legal, this checking has been hidden its true identity information in the legitimacy of confirming patient;

Step 5: registered mail label generates a random number r ₂, and send it to RFID reader;

Step 6:RFID reader is by random number r ₂be transmitted to background server;

Step 7: background server result of calculation value , and by x ₂send to RFID reader;

Step 8:RFID reader sends x ₂give registered mail label, the latter utilizes x ₂deciphering obtains digital P, $P=x_2\⊕H(I_i\⊕r_2).$

3) the chemical examination stage

As shown in Figure 4, its concrete steps are as follows for chemical examination flow process.

Step 1:RFID reader generates a random number r ₃, and send it to registered mail label and chemical examination label (being attached on blood count test tube);

Step 2: registered mail label result of calculation value

Step 3: registered mail label is by x ₃send to RFID reader;

Step 4: chemical examination tag computation , wherein ID _jit is the identification number of chemical examination label;

Step 5: chemical examination label sends x' ₃give RFID reader;

Step 6:RFID reader is according to x' ₃obtain ID _jafter, transmission information (ID _j, r ₃, x ₃) to background server;

Step 7: background server is according to information (ID _j, r ₃, x ₃) checking patient legitimacy, if legal, the x that received ₃same calculated value equate, server is by the identification number ID of chemical examination label _jbe inserted in this patient's corresponding record.

4) examination phase

As shown in Figure 5, its concrete steps are as follows for check process.

Step 1:RFID reader generates a random number r ₄, and send it to registered mail label;

Step 2: registered mail label result of calculation value $x_4=H(I_i\⊕r_4)\⊕\left(P\right|\left|I_i\right);$

Step 3: registered mail label sends x ₄give RFID reader;

Step 4:RFID reader forwarding messages (r ₄, x ₄) give background server, background server is according to received x ₄with calculate whether equate to judge patient's legitimacy, if result is equal, patient's legitimacy is verified.

Step 5:RFID reader generates a random number r ₅, and by (T _i, r ₅) send to registered mail label, wherein T _iit is current timestamp;

Step 6: registered mail label result of calculation value $x_5=H(I_i\⊕r_5)\⊕\left(T_i\right|\left|P\right|\left|I_i\right);$

Step 7: registered mail label sends x ₅give RFID reader;

Step 8: check that medical worker's label sends ID _kgive RFID reader, wherein ID _kit is the identification number that checks medical worker's label;

Step 9:RFID reader forwarding messages (r ₅, x ₅, ID _k) to background server;

Step 10: background server generating digital signature { r ₅, x ₅, ID _k, this digital signature can be used as the evidence of checking in the future.

5) the drug prescription stage

As shown in Figure 6, its concrete steps are as follows for drug prescription flow process.

Step 1: background server generates random number r ₆, send r ₆give RFID reader;

Step 2:RFID reader forwards random number r ₆give medicine label 1;

Step 3: medicine label 1 generates random number r ₇, and result of calculation value , wherein MID ₁it is the identification number of medicine label 1;

Step 4: medicine label 1 sends (x ₆, r ₇) to RFID reader;

Step 5:RFID reader forwards random number r ₆give medicine label 2;

Step 6: medicine label 2 generates random number r ₈, and result of calculation value , wherein MID ₂it is the identification number of medicine label 2;

Step 7: medicine label 2 sends (x ₇, r ₈) to RFID reader;

Step 8: similarly, for medicine label 3, medicine label 4 until medicine label n-1, repeating step 5～step 7;

Step 9:RFID reader forwards random number r ₆give medicine label n;

Step 10: medicine label n generates random number r _n+6, and result of calculation value , wherein MID _nit is the identification number of medicine label n;

Step 11: medicine label n sends (x _n+5, r _n+6) to RFID reader;

Step 12:RFID reader forwards (x _i+5, r _i+6) (1≤i≤n) give background server, background server is according to (the x receiving _i+5) (1≤i≤n) checking (MID _i) (in the drug prescription of 1≤i≤n) whether open doctor, if be verified, (the x that received _i+5) (1≤i≤n) same to calculated value equate, background server just notifies pharmacist powder charge to enter bag, and result of calculation value , by y _ibe stored in background server simultaneously and be attached in the medicine bag label on patient's medicine bag;

Step 13:RFID reader generates a random number r _n+7, send r _n+7give registered mail label and medicine bag label;

Step 14: registered mail label sends end value give RFID reader, medicine bag label sends end value $x_{n+7}=H(y_i\⊕r_{n+7})\⊕y_i$ Give RFID reader;

Step 15:RFID reader receives x _n+6and x _n+7after, transmission information (x _n+6, x _n+7, r _n+7) mate checking to background server, i.e. background server checking x _n+6and x _n+7whether respectively with calculated value with equate, and if only if, and checking all equates, just can conclude that this medicine bag do not make mistakes and really belong to patient I _i.

Claims (1)

1. a radio frequency identification medical information processing method for secret protection is provided, it is characterized in that the method comprises 5 stages, register, go to a doctor, chemical examination, inspection and drug prescription, concrete grammar is as follows:

1) register the stage

Step 11:RFID reader reads the unique number ID of registered mail label _i, intelligent card reading reads patient's smart card;

Step 12:RFID reader is by registered mail label unique number ID _isend to intelligent card reading;

Step 13: intelligent card reading is received ID _iafter, the private key in employing patient smart card is to ID _ibe encrypted operation, obtain patient's anonymous identification I _i=Encrypt (ID _i);

Step 14: intelligent card reading is by patient's anonymous identification I _isend to RFID reader, the latter is by the patient's anonymous identification I receiving _iwrite registered mail label and replace ID _i;

Step 15: intelligent card reading sends patient's anonymous identification I _igive background server is preserved;

2) the medical stage

Step 21: doctor generates a random number r by RFID reader ₁, send random number r ₁give patient's registered mail label;

Step 22: obtain after random number registered mail label result of calculation value wherein H () is hash function;

Step 23: registered mail label sends (r ₁, x ₁) to RFID reader;

Step 24:RFID reader is by (r ₁, x ₁) being transmitted to background server, background server is verified the correctness of the x1 receiving, is about to received x ₁same calculated value compare, identically represent that patient status is legal, this checking has been hidden its true identity information in the legitimacy of confirming patient;

Step 25: registered mail label generates a random number r ₂, and send it to RFID reader;

Step 26:RFID reader is by random number r ₂be transmitted to background server;

Step 27: background server result of calculation value wherein P is random number, and by x ₂send to RFID reader;

Step 28:RFID reader sends x ₂give registered mail label, the latter utilizes x ₂deciphering obtains digital P, $P=x_2\⊕H(I_i\⊕r_2);$

3) the chemical examination stage

Step 31:RFID reader generates a random number r ₃, and send it to registered mail label and chemical examination label, be attached on blood count test tube;

Step 32: registered mail label result of calculation value

Step 33: registered mail label is by x ₃send to RFID reader;

Step 34: chemical examination tag computation , wherein ID _jit is the identification number of chemical examination label;

Step 35: chemical examination label sends x' ₃give RFID reader;

Step 36:RFID reader is according to x' ₃obtain ID _jafter, transmission information (ID _j, r ₃, x ₃) to background server;

Step 37: background server is according to information (ID _j, r ₃, x ₃) checking patient legitimacy, if legal, the x that received ₃same calculated value equate, server is by the identification number ID of chemical examination label _jbe inserted in this patient's corresponding record;

4) examination phase

Step 41:RFID reader generates a random number r ₄, and send it to registered mail label;

Step 42: registered mail label result of calculation value $x_4=H(I_i\⊕r_4)\⊕\left(P\right|\left|I_i\right);$

Step 43: registered mail label sends x ₄give RFID reader;

Step 44:RFID reader forwarding messages (r ₄, x ₄) give background server, background server is according to received x ₄with calculate whether equate to judge patient's legitimacy, if result is equal, patient's legitimacy is verified;

Step 45:RFID reader generates a random number r ₅, and by (T _i, r ₅) send to registered mail label, wherein T _iit is current timestamp;

Step 46: registered mail label result of calculation value $x_5=H(I_i\⊕r_5)\⊕\left(T_i\right|\left|P\right|\left|I_i\right);$

Step 47: registered mail label sends x ₅give RFID reader;

Step 48: check that medical worker's label sends ID _kgive RFID reader, wherein ID _kit is the identification number that checks medical worker's label;

Step 49:RFID reader forwarding messages (r ₅, x ₅, ID _k) to background server;

Step 410: background server generating digital signature { r ₅, x ₅, ID _k, this digital signature can be used as the evidence of checking in the future;

5) the drug prescription stage

Step 51: background server generates random number r ₆, send r ₆give RFID reader;

Step 52:RFID reader forwards random number r ₆give medicine label 1;

Step 53: medicine label 1 generates random number r ₇, and result of calculation value , wherein MID ₁it is the identification number of medicine label 1;

Step 54: medicine label 1 sends (x ₆, r ₇) to RFID reader;

Step 55:RFID reader forwards random number r ₆give medicine label 2;

Step 56: medicine label 2 generates random number r ₈, and result of calculation value , wherein MID ₂it is the identification number of medicine label 2;

Step 57: medicine label 2 sends (x ₇, r ₈) to RFID reader;

Step 58: similarly, for medicine label 3, medicine label 4 until medicine label n-1, repeating step 55～step 57;

Step 59:RFID reader forwards random number r ₆give medicine label n;

Step 510: medicine label n generates random number r _n+6, and result of calculation value , wherein MID _nit is the identification number of medicine label n;

Step 511: medicine label n sends (x _n+5, r _n+6) to RFID reader;

Step 512:RFID reader forwards (x _i+5, r _i+6) (1≤i≤n) give background server, background server is according to (the x receiving _i+5) (1≤i≤n) checking (MID _i) (in the drug prescription of 1≤i≤n) whether open doctor, if be verified, (the x that received _i+5) (1≤i≤n) same to calculated value equate, background server just notifies pharmacist powder charge to enter bag, and result of calculation value , by y _ibe stored in background server simultaneously and be attached in the medicine bag label on patient's medicine bag;

Step 513:RFID reader generates a random number r _n+7, send r _n+7give registered mail label and medicine bag label;

Step 514: registered mail label sends result of calculation value give RFID reader, medicine bag label sends result of calculation value $x_{n+7}=H(y_i\⊕r_{n+7})\⊕y_i$ Give RFID reader;

Step 515:RFID reader receives x _n+6and x _n+7after, transmission information (x _n+6, x _n+7, r _n+7) mate checking to background server, i.e. background server checking x _n+6and x _n+7whether respectively with calculated value with equate, and if only if, and checking all equates, just can conclude that this medicine bag do not make mistakes and really belong to patient I _i.