# US 12,762,569 B2 · Embedding coding secrets > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,762,569 B2 - Document ID: US12762569B2 - Status: Granted - Kind: B2 - Application number: 18/378,545 - Filed: 2023-10-10 - Published: 2025-04-10 - Granted: 2026-10-13 - Earliest claimed: 2023-10-10 - Assignees: Toyota Motor North America, Inc.; Toyota Jidosha Kabushiki Kaisha - Applicants: Toyota Motor North America, Inc. - Inventors: Edward Allen Cain, Jr.; Adam Loyd Parker; Jonathan S. Burnham - Web page: https://patentgrep.com/patent/US12762569B2 ## CPC - G06Q 20/409: {Device specific authentication in transaction processing} - G06Q 20/3829: {involving key management} - G06F 21/6245: {Protecting personal data, e.g. for financial or medical purposes} - G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract An example operation includes one or more of: detecting a request for a software application from a vehicle computer, wherein the software application includes source code comprising one or more embedded placeholders that are mapped to one or more secrets stored in a data store of a vehicle; identifying the one or more secrets stored in the data store that are associated with the one or more embedded placeholders; replacing the one or more embedded placeholders with the one or more secrets identified from the data store into the source code of the software application; and executing the source code of the software application to cause the vehicle to perform an action. ## Claims ### Claim 1 A method, comprising: detecting a request for a software application from a vehicle, wherein the software application includes source code comprising at least one embedded placeholder containing a dummy value; identifying at least one sensitive plain-text data value which is mapped to the at least one embedded placeholder within a data store; replacing, by an embedded system of the vehicle at runtime, the dummy value with the at least one sensitive plain-text data value without storing the plain-text data value in non-volatile memory to generate modified source code; compiling the modified source code with a wrapper that includes the at least one sensitive plain-text data value thereby compiling the wrapper with the source code; executing the compiled modified source code via the software application in an embedded system of the vehicle; and controlling a safety-critical vehicle function that affects maneuvering of the vehicle while travelling along the route based on the executed modified source code in the embedded system. ### Claim 2 (depends on 1) The method of claim 1, wherein the at least one sensitive plain-text data value is associated with the safety-critical vehicle function. ### Claim 3 (depends on 1) The method of claim 1, wherein the at least one sensitive plain-text data value comprises financial, banking, or personally-identifiable information about at least one occupant of the vehicle. ### Claim 4 (depends on 1) The method of claim 1, wherein the at least one sensitive plain-text data value is associated with a geographic location of the vehicle. ### Claim 5 (depends on 1) The method of claim 1, wherein the at least one sensitive plain-text data value identifies a device associated with an occupant of the vehicle. ### Claim 6 (depends on 1) The method of claim 1, wherein the at least one sensitive plain-text data value comprises at least one symmetric key pair. ### Claim 7 (depends on 1) The method of claim 1, wherein the data store comprises an embedded library, and the replacing comprises executing pre-written code from the embedded library to modify the source code. ### Claim 8 (depends on 1) The method of claim 1, wherein the replacing comprises transforming a header file using a template header that replaces a token with a corresponding value from a variable in a file stored in the data store based on a name of the token. ### Claim 9 A system, comprising: a processor; and a memory, wherein the processor and the memory are communicably coupled, wherein the processor is configured to: detect a request for a software application from a vehicle travelling on a route, wherein the software application includes source code that comprises at least one embedded placeholder containing a dummy value; identify at least one sensitive plain-text data value which is mapped to the at least one embedded placeholder within a data store; replace, by an embedded system of the vehicle at runtime, the dummy value with the at least one sensitive plain-text data value without storing the plain-text data value in non-volatile memory to generate modified compiled source; compile the modified source code with a wrapper that includes the at least one sensitive plain-text data value thereby compiling the wrapper with the source code; execute the compiled modified source code via the software application in an embedded system of the vehicle; and control a safety-critical vehicle function that affects maneuvering of the vehicle while travelling along the route based on the executed modified compiled source code in the embedded system. ### Claim 10 (depends on 9) The system of claim 9, wherein the at least one sensitive plain-text data value is associated with the safety-critical vehicle function. ### Claim 11 (depends on 9) The system of claim 9, wherein the at least one sensitive plain-text data value comprises financial, bank, or personally-identifiable information about an occupant of the vehicle. ### Claim 12 (depends on 9) The system of claim 9, wherein the at least one sensitive plain-text data value is associated with a geographic location of the vehicle. ### Claim 13 (depends on 9) The system of claim 9, wherein the at least one sensitive plain-text data value identifies a device associated with an occupant of the vehicle. ### Claim 14 (depends on 9) The system of claim 9, wherein the at least one sensitive plain-text data value is associated with a type of data that was previously compromised in another vehicle. ### Claim 15 (depends on 9) The system of claim 9, wherein the at least one sensitive plain-text data value comprises at least one symmetric key pair. ### Claim 16 (depends on 9) The system of claim 9, wherein the data store comprises an embedded library, and the processor is configured to execute pre-written code from the embedded library to modify the source code. ### Claim 17 A computer-readable storage medium comprising instructions that, when read by a processor, cause the processor to perform: detecting a request for a software application from a vehicle travelling along a route, wherein the software application includes source code comprising at least one embedded placeholder containing a dummy value; identifying at least one sensitive plain-text data value which is mapped to the at least one embedded placeholder within a data store; replacing, by an embedded system of the vehicle at runtime, the dummy value with the at least one sensitive plain-text data value without storing the plain-text data value in non-volatile memory to generate modified source; compiling the modified source code with a wrapper that includes the at least one sensitive plain-text data value thereby compiling the wrapper with the source code; executing the compiled modified source code of the software application in an embedded system of the vehicle; and controlling a safety-critical vehicle function that affects maneuvering of the vehicle while travelling along the route based on the executed modified source code in the embedded system. ### Claim 18 (depends on 1) The method of claim 1, wherein the vehicle function that affects maneuvering of the vehicle comprises at least one of a braking function, a steering function, a throttle control, and power steering.