Struct mc_oblivious_ram::ORAMU32PositionMap

pub struct ORAMU32PositionMap<ValueSize: ArrayLength<u8> + PartialDiv<U8>, O: ORAM<ValueSize> + Send + Sync + 'static, R: RngCore + CryptoRng + Send + Sync + 'static> { /* private fields */ }

A position map implemented on top of an ORAM Positions are represented as 32 bytes inside a page in an ORAM.

Value size represents the chunk of 32 byte values that we scan across.

Implementations

impl<ValueSize, O, R> ORAMU32PositionMap<ValueSize, O, R>where ValueSize: ArrayLength<u8> + PartialDiv<U8>, O: ORAM<ValueSize> + Send + Sync + 'static, R: RngCore + CryptoRng + Send + Sync + 'static,

pub fn new<OC: ORAMCreator<ValueSize, R, Output = O>, M: 'static + FnMut() -> R>( size: u64, height: u32, stash_size: usize, rng_maker: &mut M ) -> Self

Create position map where all positions appear random, lazily

Trait Implementations

impl<ValueSize, O, R> PositionMap for ORAMU32PositionMap<ValueSize, O, R>where ValueSize: ArrayLength<u8> + PartialDiv<U8>, O: ORAM<ValueSize> + Send + Sync + 'static, R: RngCore + CryptoRng + Send + Sync + 'static,

fn len(&self) -> u64

The number of keys in the map. The valid keys are in the range 0..len.

fn write(&mut self, key: &u64, new_val: &u64) -> u64

Write a new value to a particular key. The new value should be a random nonce from a CSPRNG. Returns the old value. It is illegal to write to a key that is out of bounds.