Function hpke::ContextR_Open

pub fn ContextR_Open(
    aead_id: AEAD, 
    context: (Key, Nonce, u32, ByteSeq), 
    aad: &ByteSeq, 
    ct: &ByteSeq
) -> Result<(ByteSeq, (Key, Nonce, u32, ByteSeq)), HpkeError>

Stateful open.

See ContextR.Open for more details.

The recipient’s context can decrypt a ciphertext ct with associated data aad as follows:

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