Trait aligned_cmov::CMov

pub trait CMov: Sized {
    // Required method
    fn cmov(&mut self, condition: Choice, src: &Self);
}

CMov represents types that can be (obliviously) conditionally moved.

“Conditional move” means: if condition { *dest = *src } The interesting case is when this must be side-channel resistant and the condition cannot be leaked over CPU side-channels.

This API is object-oriented, and we take self = dest. This is good in rust because then you don’t have to name the type to call the function.

These are the types that we can hope to support with ORAM, and this API allows ORAM to be written in a generic way.

Note: Types that own dynamic memory cannot be CMov by design. They also cannot be in an ORAM, by design. If your type has nontrivial Drop it is likely not reasonable to CMov it or put it in an ORAM.

Required Methods

fn cmov(&mut self, condition: Choice, src: &Self)

Implementations on Foreign Types

impl CMov for bool

fn cmov(&mut self, condition: Choice, src: &bool)

impl CMov for i64

fn cmov(&mut self, condition: Choice, src: &i64)

impl CMov for i32

fn cmov(&mut self, condition: Choice, src: &i32)

impl CMov for usize

fn cmov(&mut self, condition: Choice, src: &usize)

impl CMov for u32

fn cmov(&mut self, condition: Choice, src: &u32)

impl CMov for u64

fn cmov(&mut self, condition: Choice, src: &u64)

Implementors

impl<N: ArrayLength<u8>> CMov for A8Bytes<N>

impl<N: ArrayLength<u8>> CMov for A64Bytes<N>