Map of secret-key shares for threshold-FHE abort recovery

Opaque S7 wrapper around a shared_ptr<std::unordered_map<uint32_t, DCRTPoly>>. Produced by share_keys() — each call returns one party's contribution to the distributed shares of their own secret key. Consumed by recover_shared_key(), which reconstructs the original secret from threshold or more shares when a party drops out.

Usage

SecretShareMap(ptr = NULL)

Arguments

ptr

External pointer (internal use).

Value

An S7 object of class SecretShareMap, inheriting from OpenFHEObject, whose ptr property holds an external pointer to the C++ std::unordered_map<uint32_t, DCRTPoly>. It carries one share per party index and acts as the transport format for the threshold-FHE abort-recovery protocol; it is produced by share_keys() rather than by calling this constructor directly.

Details

The map is keyed by party index (1-based uint32). Users do not index into it directly; it is a transport format for the secret-sharing protocol.