Trait prio::vdaf::xof::Xof

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pub trait Xof<const SEED_SIZE: usize>: Clone + Debug {
    type SeedStream: RngCore + Sized;

    // Required methods
    fn init(seed_bytes: &[u8; SEED_SIZE], dst: &[u8]) -> Self;
    fn update(&mut self, data: &[u8]);
    fn into_seed_stream(self) -> Self::SeedStream;

    // Provided methods
    fn into_seed(self) -> Seed<SEED_SIZE> { ... }
    fn seed_stream(
        seed: &Seed<SEED_SIZE>,
        dst: &[u8],
        binder: &[u8]
    ) -> Self::SeedStream { ... }
}

Expand description

An extendable output function (XOF) with the interface specified in [draft-irtf-cfrg-vdaf-08].

Required Associated Types§

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type SeedStream: RngCore + Sized

The type of stream produced by this XOF.

Required Methods§

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fn init(seed_bytes: &[u8; SEED_SIZE], dst: &[u8]) -> Self

Construct an instance of Xof with the given seed.

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fn update(&mut self, data: &[u8])

Update the XOF state by passing in the next fragment of the info string. The final info string is assembled from the concatenation of sequence of fragments passed to this method.

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