Struct UncheckedEnigmaMachine

pub struct UncheckedEnigmaMachine { /* private fields */ }

Implementations

impl UncheckedEnigmaMachine

pub unsafe fn decrypt_unchecked(&self, text: &str) -> String

Decrypts the given ciphertext while skipping all safety checks for maxmimum speed.

This is exactly the same as calling machine.encrypt_unchecked(text), since the enigma cipher is symmetric; The only difference is semantic meaning and intent, i.e.,

assert_eq!(text, machine.decrypt_unchecked(machine.decrypt_unchecked(text)));
assert_eq!(text, machine.encrypt_unchecked(machine.encrypt_unchecked(text)));
assert_eq!(text, machine.decrypt_unchecked(machine.encrypt_unchecked(text)));
assert_eq!(text, machine.encrypt_unchecked(machine.decrypt_unchecked(text)));

Parameters

• text - The ciphertext to decrypt

Returns

The decrypted plaintext.

Safety

This function may panic if the Enigma machine was constructed with invalid settings. If the machine was constructed correctly, this is guarnateed to not panic, and will function identically to EnigmaMachine::decrypt(), with marginally better performance. See the Performance section of the README for more information.

pub unsafe fn encrypt_unchecked(&self, text: &str) -> String

Encrypts the given plaintext while skipping all safety checks for maxmimum speed.

This is exactly the same as calling machine.decrypt_unchecked(text), since the enigma cipher is symmetric; The only difference is semantic meaning and intent, i.e.,

assert_eq!(text, machine.decrypt_unchecked(machine.decrypt_unchecked(text)));
assert_eq!(text, machine.encrypt_unchecked(machine.encrypt_unchecked(text)));
assert_eq!(text, machine.decrypt_unchecked(machine.encrypt_unchecked(text)));
assert_eq!(text, machine.encrypt_unchecked(machine.decrypt_unchecked(text)));

Parameters

• text - The ciphertext to decrypt

Returns

The decrypted plaintext.

Safety

This function may panic if the Enigma machine was constructed with invalid settings. If the machine was constructed correctly, this is guarnateed to not panic, and will function identically to EnigmaMachine::decrypt(), with marginally better performance. See the Performance section of the README for more information.

Trait Implementations

impl UncheckedEnigmaBuilder for UncheckedEnigmaMachine

fn rotors(self, first: u8, second: u8, third: u8) -> impl UncheckedEnigmaBuilder

Sets the rotors for the machine.

fn ring_positions( self, first: u8, second: u8, third: u8, ) -> impl UncheckedEnigmaBuilder

Sets the “ring positions” or “rotor positions” of the machine, unchecked.

fn ring_settings( self, first: u8, second: u8, third: u8, ) -> impl UncheckedEnigmaBuilder

Sets the ring settings of the machine, unchecked.

fn plugboard(self, plugboard: &str) -> impl UncheckedEnigmaBuilder

Sets the plugboard for the machine. The given plugboard should be a space-separated string of letter pairs. This is automatically bidirectional, meaning the pair AY will map A to Y and also Y to A.

fn reflector(self, reflector: &str) -> impl UncheckedEnigmaBuilder

Sets the reflector of the machine.

fn build(self) -> UncheckedEnigmaMachine

Finalizes building the Enigma machine. This is an absolutely zero-cost method that simply converts the impl UncheckedEnigmaBuilder opaque type into the concrete EnigmaMachine by just returning self.