KCAL Middleware

• Third-party upper-layer PPC applications can utilize the KCAL capabilities by calling the middleware, adding data adaptation layers, and calling the corresponding client APIs.
• KCAL uses Kunpeng confidential VMs and in-house protocols for dual encryption, and provides dedicated high- and low-order operators to enhance data security in various computing scenarios in a way that data is available but invisible.
• The operator acceleration service maximizes the performance based on the hardware instruction capabilities of Kunpeng chips.

KCAL APIs

• KCAL_Config

  struct KCAL_Config {
  int nodeId;
  int fixBits;
  int threadCount;
  int worldSize;
  bool useSMAlg;
  };

  This structure is used as a configuration item to build the KCAL middleware context, including the custom node ID, fixed-point number bits, number of threads, number of participants, and SM algorithm enablement configuration.

• Context::Create

  std::shared_ptr<Context> Context::Create(KCAL_Config config, TEE_NET_RES *netRes, KCAL_AlgorithmsType type);

  You can create a context for calling KCAL by passing the configuration, network callback API, and algorithm type.

• Future API support

  Currently, only the PSI/PIR APIs of KCAL are supported. Binary operations and multi-party operator APIs will be supported.

• For details about how to integrate KCAL middleware with a third-party library, see KCAL Middleware Integration with Ant Group's PSI Library.