false-bottom 0.3.4

A deniable encryption scheme
Documentation 
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// SPDX-License-Identifier: GPL-3.0-or-later
use crypto_bigint::{Limb, U128, U256, U512, Uint};

pub trait PrimeField {
	const PRIME: Self;
	fn field_add(&self, rhs: &Self) -> Self;
	fn field_sub(&self, rhs: &Self) -> Self;
	fn field_mul(&self, rhs: &Self) -> Self;
	fn field_inv(&self) -> Self;
}

// The prime number's position from the right end of the field.
trait PrimeValue {
	const PRIME_RPOS: u16;
	const RPOS_LIMB: Limb = Limb::from_u16(Self::PRIME_RPOS);
}

impl<const LIMBS: usize> PrimeField for Uint<LIMBS>
where
	Uint<LIMBS>: PrimeValue
{
	const PRIME: Self = Self::MAX.wrapping_sub(&Self::from_u16(Self::PRIME_RPOS - 1));
	fn field_add(&self, rhs: &Self) -> Self {
		self.add_mod_special(rhs, Self::RPOS_LIMB)
	}
	fn field_sub(&self, rhs: &Self) -> Self {
		self.sub_mod_special(rhs, Self::RPOS_LIMB)
	}
	fn field_mul(&self, rhs: &Self) -> Self {
		self.mul_mod_special(rhs, Self::RPOS_LIMB)
	}
	fn field_inv(&self) -> Self {
		//self.inv_odd_mod(&Self::PRIME).0
		self.inv_odd_mod_bounded(&Self::PRIME, self.bits_vartime(), Uint::<LIMBS>::BITS).0
	}
}

impl PrimeValue for U128 {
	const PRIME_RPOS: u16 = 159;
}

impl PrimeValue for U256 {
	const PRIME_RPOS: u16 = 189;
}

impl PrimeValue for U512 {
	const PRIME_RPOS: u16 = 569;
}