Distribution of digital content to vehicles

A system comprising:

• a memory;
• and
• one or more processors operatively coupled to the memory, the one or more processors configured to:
• receive, at a distribution unit, a first content request from a distribution electronic control unit (ECU) associated with a vehicle, wherein the first content request specifies one or more filtering criteria, and the filtering criteria include a model identifier of the vehicle;
• determine whether a content item that satisfies the filtering criteria is stored on a storage device associated with the distribution unit;
• responsive to determining that the content item that satisfies the filtering criteria is not stored on the storage device of the distribution unit:
• send, to a managed content delivery service, a second content request, wherein the second content request reflects the filtering criteria, and
• receive, from the managed content delivery service, the content item that satisfies the filtering criteria;
• identify an additional content item that does not satisfy the filtering criteria, wherein the additional content item is a later version of a second content item that is currently installed on the vehicle;
• and
• send, to the distribution ECU associated with the vehicle, the content item, the additional content item, a public key associated with the distribution unit, a hash of the content item and the additional content item, wherein the hash is signed by a private key associated with the distribution unit.

A non-transitory machine-readable storage medium storing instructions that, when executed by one or more processors, cause the one or more processors to:

• receive, at a distribution unit, a first content request from a distribution electronic control unit (ECU) associated with a vehicle, wherein the first content request specifies one or more filtering criteria, and the filtering criteria include a model identifier of the vehicle;
• determine whether a content item that satisfies the filtering criteria is stored on a storage device associated with the distribution unit;
• responsive to determining that the content item that satisfies the filtering criteria is not stored on the storage device of the distribution unit:
• send, to a managed content delivery service, a second content request, wherein the second content request reflects the filtering criteria, and
• receive, from the managed content delivery service, the content item that satisfies the filtering criteria;
• identify an additional content item that does not satisfy the filtering criteria, wherein the additional content item is a later version of a second content item that is currently installed on the vehicle;
• and
• send, to the distribution ECU associated with the vehicle, the content item, the additional content item, a public key associated with the distribution unit, and a hash of the content item and the additional content item, wherein the hash is signed by a private key associated with the distribution unit.