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1. write code in blocks:
   • 3 main blocks: one block for parameter setting, one for the steps of operations, one for results printing(time spent & overhead).
   • Nested block: In the block for steps of operations, there can be also several blocks for each step.
   • Empty line: code block should be separated by one empty line, and inside the block, empty line might be avoided.
2. write core testing code:
   • For each step, there should be at least one comment or printed line implying and explaining the action being taken.
   • The general format of printed line: Somebody: <Did something[...][, extensive explanation]>, for example: Server: Generated parameters, parameters are all good.
3. record test results:
   • record the time spent & overhead for each main step.
   • print the results for each main step and the total result, with explicit explanation.

server

• void set_rand_vec(vector<uint64_t> &rand_vec).

client

• PirBatchQuery vector<PirQuery>;
• PirBatchReply vector<PirReply>;
• vector<vector<uint8_t>> batch_deconfuse_and_decode_replies(vector<PirBatchReply> &batch_reply_vec, uint32_t party_num, vector<Index> &elem_index_with_ptr);
• (to modified) vector<uint8_t> deconfuse_and_decode_replies(PirBatchReply &batch_reply, uint64_t offset).

Batch

PIRQuery, PIRReply -> single indice query, reply.

• std::vector<PIRQuery> BatchPIRQuery : a vector of PIR queries.
• std::vector<PIRReply> BatchPIRReply : a vector of PIR replies.
• gen_batch_query in pir_client.cpp/hpp.
• gen_batch_reply in pir_server.cpp/hpp.

Additive SS

In pir_server.cpp/hpp:

• std::vector<std::uint64_t> add_rand_vec1: store random numbers to be sent to one server.
• std::vector<std::uint64_t> add_rand_vec2: store random numbers to be sent to the other server.
• void gen_add_rand(std::uint64_t dest_rand1, std::uint64_t dest_rand2): generate two random number and assign them to dest_rand1,2.
• void refresh_and_set_add_rand_vec(std::vector<std::vector<seal::Ciphertext>> &query): refresh and set the add_rand_vec1,2 according to the batch query length (call gen_add_rand inside a loop).
• #3

In pir_client.cpp/hpp

• add_deconfuse_and_decrypt(seal::Ciphertext ct_s1, seal::Ciphertext ct_s2, seal::Ciphertext ct_s3): sum up the corresponding reply ciphertexts and decrypt.

Multipulicative SS

(with some problems) To be added.