Struct PubKey

pub struct PubKey {
    pub g: BigInt,
    pub n: BigInt,
    pub nn: BigInt,
}

PubKey – Publick Key

Fields

g: BigInt

n: BigInt

nn: BigInt

Implementations

impl PubKey

pub fn encrypt_message(&self, msg: &str) -> Option<BigInt>

encrypt message to ciphertext

pub fn encrypt(&self, m: &BigInt) -> Option<BigInt>

ecrypt integer message to ciphertext Encrypt: additive group A -> additive group B

impl PubKey

pub fn add_plain_text( &self, ciphertext: &BigInt, msg: &BigInt, ) -> Option<BigInt>

D(E(m1) * E(m2) mod n^2) = m1 + m2 mod n this formula not efficient, cause operation E has more OP steps => D(E(m1) * g^m2 mod n^2) = m1 + m2 mod n That is efficient, Simplified steps D(add_plain_text(E(m1), m2)) = m1 + m2 mod n returns added msg encrypted result add_plain_text(&self, ciphertext: &BigInt, msg: &str) -> Option

pub fn add(&self, ciphertext1: &BigInt, ciphertext2: &BigInt) -> Option<BigInt>

D(add(E(m1), E(m2))) = m1 + m2 mod n returns added sum of two encrypted data

pub fn add_two_plain_text( &self, plain1: &BigInt, plain2: &BigInt, ) -> Option<BigInt>

m1 + m2

pub fn sub(&self, ciphertext1: &BigInt, ciphertext2: &BigInt) -> Option<BigInt>

D(sub(E(m1), E(m2))) = E(m1) - E(m2) mod n if m1 > m2 returns sub result of two encrypted data

pub fn mult_plain_text( &self, ciphertext: &BigInt, plain_k: &BigInt, ) -> Option<BigInt>

D(E(m1)^m2 mod n^2) = m1m2 mod n => D(E(m2)^m1 mod n^2) = m1m2 mod n = m2m1 mod n => D(E(m)^k mod n^2) = km mod n Dec(mult_plain_text(E(m1), m2)) = m1 * m2 mod n. returns result of multiplication of two ciphertexts D(E(m)^k mod n^2) = k*m mod n Dec(mult_k(E(m1), m2)) = m1 * m2 mod n.

pub fn div_plain_text( &self, ciphertext: &BigInt, plain_k: &BigInt, ) -> Option<BigInt>

D(E(m)^-k mod n^2) = D(E(m)^(inverse k) mod n^2) = m / k mod n Dec(div_plain_text(E(m1), m2)) = m1 / m2 mod n. returns result division of two ciphertext

pub fn mult_two_plain_text( &self, plain1: &BigInt, plain2: &BigInt, ) -> Option<BigInt>

m1 * m2

pub fn div_two_plain_text( &self, plain1: &BigInt, plain2: &BigInt, ) -> Option<BigInt>

m1 / m2

Trait Implementations

impl Clone for PubKey

fn clone(&self) -> PubKey

Returns a duplicate of the value.

const fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PubKey

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for PubKey

fn default() -> PubKey

Returns the “default value” for a type.