Struct hkdf::Hkdf

pub struct Hkdf<D> where
    D: Update + BlockInput + FixedOutput + Reset + Default + Clone,
    D::BlockSize: ArrayLength<u8>,
    D::OutputSize: ArrayLength<u8>,  { /* fields omitted */ }

Structure representing the HKDF, capable of HKDF-Expand and HKDF-Extract operations.

Implementations

impl<D> Hkdf<D> where
    D: Update + BlockInput + FixedOutput + Reset + Default + Clone,
    D::BlockSize: ArrayLength<u8>,
    D::OutputSize: ArrayLength<u8>, 

pub fn new(salt: Option<&[u8]>, ikm: &[u8]) -> Hkdf<D>

Convenience method for extract when the generated pseudorandom key can be ignored and only HKDF-Expand operation is needed. This is the most common constructor.

pub fn from_prk(prk: &[u8]) -> Result<Hkdf<D>, InvalidPrkLength>

Create Hkdf from an already cryptographically strong pseudorandom key as per section 3.3 from RFC5869.

pub fn extract(
    salt: Option<&[u8]>,
    ikm: &[u8]
) -> (GenericArray<u8, D::OutputSize>, Hkdf<D>)

The RFC5869 HKDF-Extract operation returning both the generated pseudorandom key and Hkdf struct for expanding.

pub fn expand_multi_info(
    &self,
    info_components: &[&[u8]],
    okm: &mut [u8]
) -> Result<(), InvalidLength>

The RFC5869 HKDF-Expand operation. This is equivalent to calling expand with the info argument set equal to the concatenation of all the elements of info_components.

pub fn expand(&self, info: &[u8], okm: &mut [u8]) -> Result<(), InvalidLength>

The RFC5869 HKDF-Expand operation

If you don’t have any info to pass, use an empty slice.

Trait Implementations

impl<D: Clone> Clone for Hkdf<D> where
    D: Update + BlockInput + FixedOutput + Reset + Default + Clone,
    D::BlockSize: ArrayLength<u8>,
    D::OutputSize: ArrayLength<u8>, 

fn clone(&self) -> Hkdf<D>

Returns a copy of the value.

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

Performs copy-assignment from source.