Multi-party masked decryption for interactive bootstrap

Each party calls this with their own secret share, the ciphertext being refreshed, and the common random element from int_mp_boot_random_element_gen(). Returns a list of two Ciphertext objects — the party's masked-decryption "shares pair". Each party's shares pair gets collected and fed into int_mp_boot_add().

Usage

int_mp_boot_decrypt(sk, ct, a)

Arguments

sk

A PrivateKey (this party's share).

ct

A Ciphertext to refresh.

a

A Ciphertext holding the common random element from int_mp_boot_random_element_gen().

Value

A list of two Ciphertext objects (the party's shares pair).