Struct SshkdfBuilder 

pub struct SshkdfBuilder<'a> { /* private fields */ }

SSH key-derivation builder (RFC 4253 §7.2).

let iv = SshkdfBuilder::new(&sha256, &shared_secret, &exchange_hash, &session_id,
                            SshkdfKeyType::InitialIvClientToServer)
    .derive_to_vec(16)?;

Implementations

impl<'a> SshkdfBuilder<'a>

pub fn new( digest: &'a DigestAlg, key: &'a [u8], xcghash: &'a [u8], session_id: &'a [u8], key_type: SshkdfKeyType, ) -> Self

Create an SSH-KDF builder.

• digest — hash algorithm (e.g. SHA-256).
• key — the shared secret K from the Diffie-Hellman exchange.
• xcghash — exchange hash H.
• session_id — the session identifier (= first H for the session).
• key_type — which key/IV component to derive (A–F).

pub fn derive(self, out: &mut [u8]) -> Result<(), ErrorStack>

Derive key material, writing into out.

Errors

pub fn derive_to_vec(self, len: usize) -> Result<Vec<u8>, ErrorStack>

Derive len bytes, returning them in a freshly allocated Vec<u8>.

Errors