Privacy preserving application and device error detection

A computer-implemented method, comprising:

• generating, by an application executing on a client device, a random set of data;
• blinding, by the application, the random set of data to generate blinded random set of data;
• obtaining data regarding a digital certificate of the application and device trustworthiness data including device data that can be used in assessing trustworthiness of the client device;
• providing, to a trust assessment server, the blinded random set of data, the data regarding the digital certificate, and the device trustworthiness data;
• receiving, from the trust assessment server, a first set of data including (1) a first indication specifying that the client device is trustworthy, (2) a second indication specifying that the application is authentic, and (3) a digital signature, of the trust assessment server, over a first data item;
• validating the digital signature over the first data item;
• in response to validating the digital signature over the first data item, unblinding, by the application, the first data item to obtain an unblinded first data item;
• confirming that the unblinded first data item matches the random set of data;
• in response to confirming that the unblinded first data item matches the random set of data, obtaining, by the application, contextual application data representing a context in which content is provided and interacted with, within the application;
• providing, to an application error detection server, the digital signature over the first data item, the first indication, the second indication, and the contextual application data;
• and
• receiving, from the application error detection server, a third indication specifying that the application does not have any errors.

A system, comprising:

• one or more memory devices storing instructions;
• and
• one or more data processing apparatus that are configured to interact with the one or more memory devices, and upon execution of the instructions, perform operations including:
• obtaining, by an application executing on a client device, contextual application data representing a context in which content is provided and interacted with, within the application;
• blinding, by the application, the contextual application data to generate blinded contextual application data;
• obtaining data regarding a digital certificate of the application and device trustworthiness data including data that can be used in assessing trustworthiness of the client device;
• providing, to a trust assessment server, the blinded contextual application data, the data regarding the digital certificate, and the device trustworthiness data;
• receiving, the trust assessment server, a set of data including (1) a first indication specifying that the client device is trustworthy, (2) a second indication specifying that the application is authentic, and (3) a digital signature, of the trust assessment server, over a first data item;
• validating the digital signature over the first data item;
• in response to validating the digital signature over the first data item, unblinding, by the application, the first data item to obtain an unblinded first data item;
• confirming that the unblinded first data item matches the contextual application data;
• in response to confirming that the unblinded first data item matches the contextual application data, providing, to an application error detection server, the digital signature over the first data item, the first indication, the second indication, and the unblinded first data item;
• and
• receiving, from the application error detection server, a third indication specifying that the application does not have any errors.

A non-transitory computer readable medium storing instructions that, when executed by one or more data processing apparatus, cause the one or more data processing apparatus to perform operations comprising:

• obtaining, by an application executing on a client device, contextual application data representing a context in which content is provided and interacted with, within the application;
• blinding, by the application, the contextual application data to generate blinded contextual application data;
• obtaining data regarding a digital certificate of the application and device trustworthiness data including data that can be used in assessing trustworthiness of the client device;
• providing, to a trust assessment server, the blinded contextual application data, the data regarding the digital certificate, and the device trustworthiness data;
• receiving, the trust assessment server, a set of data including (1) a first indication specifying that the client device is trustworthy, (2) a second indication specifying that the application is authentic, and (3) a digital signature, of the trust assessment server, over a first data item;
• validating the digital signature over the first data item;
• in response to validating the digital signature over the first data item, unblinding, by the application, the first data item to obtain an unblinded first data item;
• confirming that the unblinded first data item matches the contextual application data;
• in response to confirming that the unblinded first data item matches the contextual application data, providing, to an application error detection server, the digital signature over the first data item, the first indication, the second indication, and the unblinded first data item;
• and
• receiving, from the application error detection server, a third indication specifying that the application does not have any errors.

A non-transitory computer readable medium storing instructions that, when executed by one or more data processing apparatus, cause the one or more data processing apparatus to perform operations comprising:

• generating, by an application executing on a client device, a random set of data;
• blinding, by the application, the random set of data to generate blinded random set of data;
• obtaining data regarding a digital certificate of the application and device trustworthiness data including device data that can be used in assessing trustworthiness of the client device;
• providing, to a trust assessment server, the blinded random set of data, the data regarding the digital certificate, and the device trustworthiness data;
• receiving, from the trust assessment server, a first set of data including (1) a first indication specifying that the client device is trustworthy, (2) a second indication specifying that the application is authentic, and (3) a digital signature, of the trust assessment server, over a first data item;
• validating the digital signature over the first data item;
• in response to validating the digital signature over the first data item, unblinding, by the application, the first data item to obtain an unblinded first data item;
• confirming that the unblinded first data item matches the random set of data;
• in response to confirming that the unblinded first data item matches the random set of data, obtaining, by the application, contextual application data representing a context in which content is provided and interacted with, within the application;
• providing, to an application error detection server, the digital signature over the first data item, the first indication, the second indication, and the contextual application data;
• and
• receiving, from the application error detection server, a third indication specifying that the application does not have any errors.