Struct KGenerator 

pub struct KGenerator<'a, D: OutputSizeUser, U> { /* private fields */ }

Deterministic generator for the ephemeral scalar k as used by (EC)DSA.

Implementations

impl<'a, D, U> KGenerator<'a, D, U>

where D: BlockSizeUser + Digest, U: Unsigned + Encoding,

pub fn new(x: &[u8], h: &[u8], data: &[u8], q: &'a U) -> Self

Initialize k generator.

Accepts the following parameters and inputs:

• x: secret key
• h: raw hash/digest of input message
• data: additional associated data, e.g. CSRNG output used as added entropy
• q: field modulus

pub fn fill_next_k(&mut self, k: &mut [u8])

Generate a candidate k value.

This may be called repeatedly in the event a particular k is unsuitable, e.g. the resulting r value is zero.

Trait Implementations

impl<'a, D, U> Debug for KGenerator<'a, D, U>

where D: BlockSizeUser + Digest, U: Unsigned + Encoding,

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.