Struct HmacDrbg 

pub struct HmacDrbg<D>
where
    D: Digest + BlockSizeUser + FixedOutputReset,
{
    pub(crate) k: SimpleHmac<D>,
    pub(crate) v: GenericArray<u8, D::OutputSize>,
}

Internal implementation of HMAC_DRBG as described in NIST SP800-90A.

https://csrc.nist.gov/publications/detail/sp/800-90a/rev-1/final

This is a HMAC-based deterministic random bit generator used compute a deterministic ephemeral scalar k.

Fields

k: SimpleHmac<D>

HMAC key K (see RFC 6979 Section 3.2.c)

v: GenericArray<u8, D::OutputSize>

Chaining value V (see RFC 6979 Section 3.2.c)

Implementations

impl<D> HmacDrbg<D>

where D: Digest + BlockSizeUser + FixedOutputReset,

pub fn new(entropy_input: &[u8], nonce: &[u8], additional_data: &[u8]) -> Self

Initialize HMAC_DRBG

pub fn fill_bytes(&mut self, out: &mut [u8])

Write the next HMAC_DRBG output to the given byte slice.