Struct hpke_rs::Context

pub struct Context<Crypto: 'static + HpkeCrypto> { /* private fields */ }

The HPKE context. Note that the RFC currently doesn’t define this. Also see https://github.com/cfrg/draft-irtf-cfrg-hpke/issues/161.

Implementations

impl<Crypto: HpkeCrypto> Context<Crypto>

pub fn seal( &mut self, aad: &[u8], plain_txt: &[u8] ) -> Result<Vec<u8>, HpkeError>

5.2. Encryption and Decryption

Takes the associated data and the plain text as byte slices and returns the ciphertext or an error.

def Context.Seal(aad, pt):
  ct = Seal(self.key, self.ComputeNonce(self.seq), aad, pt)
  self.IncrementSeq()
  return ct

pub fn open( &mut self, aad: &[u8], cipher_txt: &[u8] ) -> Result<Vec<u8>, HpkeError>

5.2. Encryption and Decryption

Takes the associated data and the ciphertext as byte slices and returns the plain text or an error.

def Context.Open(aad, ct):
  pt = Open(self.key, self.ComputeNonce(self.seq), aad, ct)
  if pt == OpenError:
    raise OpenError
  self.IncrementSeq()
  return pt

pub fn export( &self, exporter_context: &[u8], length: usize ) -> Result<Vec<u8>, HpkeError>

5.3. Secret Export

Takes a serialised exporter context as byte slice and a length for the output secret and returns an exporter secret as byte vector.

def Context.Export(exporter_context, L):
 return LabeledExpand(self.exporter_secret, "sec", exporter_context, L)

Trait Implementations

impl<Crypto: HpkeCrypto> Debug for Context<Crypto>

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

Formats the value using the given formatter.