Server-side masked decryption for interactive bootstrap

First step of the single-party interactive bootstrap protocol. The server applies its secret key share to produce a "masked" partial decryption that the client can finish off-line. Pairs with int_boot_encrypt() / int_boot_add() / int_boot_adjust_scale() to complete the refresh.

Usage

int_boot_decrypt(sk, ct)

Arguments

sk

A PrivateKey (server's share).

ct

A Ciphertext to refresh.

Value

A Ciphertext holding the masked decryption.

See also

int_boot_encrypt(), int_boot_add(), int_boot_adjust_scale()