Crate fhe_util

Utilities for the fhe.rs library.

Functions

catch_unwind

Define catch_unwind to silence the panic in unit tests.

inverse

Computes the modular multiplicative inverse of a modulo p. Returns None if a is not invertible modulo p.

is_prime

Returns whether the modulus p is prime; this function is 100% accurate.

sample_vec_cbd

Sample a vector of independent centered binomial distributions of a given variance. Returns an error if the variance is strictly larger than 16.

transcode_bidirectional

Transcodes a vector of u64 of input_nbits-bit numbers into a vector of u64 of output_nbits-bit numbers.

transcode_from_bytes

Transcodes a vector of u8 into a vector of u64 of nbits-bit numbers.

transcode_to_bytes

Transcodes a vector of u64 of nbits-bit numbers into a vector of bytes.

variance

Compute the sample variance of a list of values. Panics if the length of value is < 2.