Custom digital components

A system, comprising:

• a data structure storing a mapping of application data to installed software development kits (SDKs) that are installed in various applications;
• a front-end server that receives, from a client device, a request for a digital component that was generated by a first SDK installed at the client device;
• and
• a custom digital component server that processes the request by performing operations including:
• receiving, from the client device, the request for the digital component that was generated by the first SDK installed at the client device;
• identifying, within one or more data fields of the request, encrypted data that was generated and encrypted by a second SDK installed at the client device and included in the request generated by the first SDK;
• generating a real-time request that includes data specifying a set of SDKs that are installed in an application that initiated the request at the client device;
• transmitting, over a network, the real-time request to a third-party digital component provider that is authorized to decrypt the encrypted data generated by the second SDK;
• receiving a response to the real-time request from the third party digital component provider;
• and
• transmitting the response to the first SDK with instructions specifying which SDK installed at the client device is required to render a digital component specified by the response.

A method, comprising:

• receiving, from a client device, a request for a digital component that was generated by a first software development kit (SDK) installed at the client device;
• identifying, within one or more data fields of the request, encrypted data that was generated and encrypted by a second SDK installed at the client device and included in the request generated by the first SDK;
• generating, by the one or more custom digital component servers, a real-time request that includes data specifying a set of SDKs that are installed in an application that initiated the request at the client device;
• transmitting, over a network by the one or more custom digital component servers, the real-time request to a third-party digital component provider that is authorized to decrypt the encrypted data generated by the second SDK;
• receiving, by the one or more custom digital component servers, a response to the real-time request from the third party digital component provider;
• and
• transmitting, by the one or more custom digital component servers, the response to the first SDK with instructions specifying which SDK installed at the client device is required to render a digital component specified by the response.

A non-transitory computer storage medium encoded with a computer program, the program comprising instructions that when executed by data processing apparatus cause the data processing apparatus to perform operations comprising:

• receiving, from a client device, a request for a digital component that was generated by a first software development kit (SDK) installed at the client device;
• identifying, within one or more data fields of the request, encrypted data that was generated and encrypted by a second SDK installed at the client device and included in the request generated by the first SDK;
• generating, by the one or more custom digital component servers, a real-time request that includes data specifying a set of SDKs that are installed in an application that initiated the request at the client device;
• transmitting, over a network by the one or more custom digital component servers, the real-time request to a third-party digital component provider that is authorized to decrypt the encrypted data generated by the second SDK;
• receiving, by the one or more custom digital component servers, a response to the real-time request from the third party digital component provider;
• and
• transmitting, by the one or more custom digital component servers, the response to the first SDK with instructions specifying which SDK installed at the client device is required to render a digital component specified by the response.