Struct RootChain 

pub struct RootChain { /* private fields */ }

This chain starts with an initial shared secret key and is maintained by both parties in order to derive sending and receiving chain keys, taking Diffie-Hellman agreements as input.

Implementations

impl RootChain

pub fn new(root_key: Vec<u8>) -> Self

Creates a new chain from a shared secret, root_key.

pub fn step(&mut self, diffie_hellman_output: &[u8]) -> Vec<u8>

Processes the diffie_hellman_output as the input to this KDF and returns the 32-byte output chain key, storing the other 32 bytes of the key expansion into an internal “current root key” vector.