1. A computer platform, comprising: a processor; a cryptographic co-processor coupled to the processor; and a platform entity coupled to the processor, wherein the platform entity is configured to establish a secure relationship with the cryptographic co-processor and, if the secure relationship is successfully established, to utilize cryptographic functions provided by the cryptographic co-processor for communications with another entity, wherein the platform entity is a Basic Input/Output System (BIOS) and the cryptographic co-processor is a Trusted Platform Module (TPM), wherein, if the BIOS communicates with a remote entity, the BIOS is authorized to utilize a first set of cryptographic functions provided by the cryptographic co-processor, the first set comprising an anonymous signature scheme that prevents disclosure of the BIOS's identity to the remote entity.