Load Index

Loads an existing encrypted index and returns an instance of EncryptedIndex.

std::unique_ptr<cyborg::EncryptedIndex> 
    LoadIndex(const std::string index_name,
              const std::array<uint8_t, 32>& index_key,
              const std::optional<size_t>& max_cache_size = 0);

Parameters

Parameter	Type	Description
index_name	std::string	Name of the index to create (must be unique).
index_key	std::array<uint8_t, 32>	32-byte encryption key for the index, used to secure index data.
max_cache_size	size_t	(Optional) Maximum size for the local cache (default is 0).

Returns

std::unique_ptr<cyborg::EncryptedIndex>: A pointer to the loaded index (EncryptedIndex).

Exceptions

std::invalid_argument

• Throws if the index name does not exist.

std::runtime_exception

• Throws if the index could not be loaded or decrypted.

Example Usage

#include "cyborg_vector_search/client.hpp"
#include "cyborg_vector_search/encrypted_index.hpp"
#include <array>

// ... Initialize the client ...

// Create a secure 32-byte key (example: all zeros)
std::array<uint8_t, 32> index_key = {0};

auto index = client.LoadIndex("my_index", index_key);