Privacy enhancements for server-side cookies

A system for accessing cryptographically protected information comprising:

• memory
• one or more processors;
• and
• one or more modules stored in the memory, the one or more modules including instructions which when executed by the one or more processors cause the system:
• to process a request received from a client system, wherein the request includes a cryptographic object, by:
• identifying, at the server system, cryptographically protected information associated with the cryptographic object;
• accessing the cryptographically protected information using the cryptographic object;
• sending, to the client system, data based at least in part on the cryptographically protected information;
• and
• in conjunction with completing processing of the request, irreversibly modifying the cryptographic object on the server system;
• wherein irreversibly modifying the cryptographic object on the server system comprises truncating the cryptographic object on the server system to generate a truncated cryptographic object.

A non-transitory computer readable storage medium storing one or more programs for execution by one or more processors of a computer system, the one or more programs comprising instructions:

• to process a request received from a client system, wherein the request includes a cryptographic object, by:
• identifying, at the server system, cryptographically protected information associated with the cryptographic object;
• accessing the cryptographically protected information using the cryptographic object;
• sending, to the client system, data based at least in part on the cryptographically protected information;
• and
• in conjunction with completing processing of the request, irreversibly modifying the cryptographic object on the server system;
• wherein irreversibly modifying the cryptographic object on the server system comprises truncating the cryptographic object on the server system to generate a truncated cryptographic object.