Trait AutoTranscript 

pub trait AutoTranscript: Transcript + Sized {
    type Label: AsRef<[u8]>;

    // Required methods
    fn get_current_label(&self) -> Self::Label;
    fn next_label(&mut self) -> Self::Label;
    fn append<S: AsRef<[u8]>>(&mut self, message: &S);
    fn append_many<S: AsRef<[u8]>>(&mut self, values: &[S]);

    // Provided methods
    fn new(protocol_info: &'static ProtocolInfo, session_id: &SessionId) -> Self { ... }
    fn extract(&mut self, label: &'static [u8]) -> Seed { ... }
    fn derive_rng(&mut self, label: &'static [u8]) -> Self::Rng { ... }
}

A trait for transcripts that do not use labels when appending messages. WARNING! This should only be implemented by transcripts that are designed to automatically manage the labels internally at runtime.

Required Associated Types

type Label: AsRef<[u8]>

The type of the label used for messages in this transcript.

Required Methods

fn get_current_label(&self) -> Self::Label

Get the label that was used for the last appended message. If no messages have been appended yet, returns the initial label.

fn next_label(&mut self) -> Self::Label

Get the label that will be used for the next appended message.

fn append<S: AsRef<[u8]>>(&mut self, message: &S)

Append a message to the transcript with an automatically generated label.

fn append_many<S: AsRef<[u8]>>(&mut self, values: &[S])

Append multiple messages to the transcript with a common automatically generated label.

Provided Methods

fn new(protocol_info: &'static ProtocolInfo, session_id: &SessionId) -> Self

Create a new transcript for a specific protocol with a session ID for domain separation.

fn extract(&mut self, label: &'static [u8]) -> Seed

Extract pseudorandom bytes based on the transcript state. Note: two consecutive extractions must yield different outputs.

fn derive_rng(&mut self, label: &'static [u8]) -> Self::Rng

Derive a CSPRNG from the transcript state with a specific label. Allows arbitrary-length output generation

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<T: Transcript> AutoTranscript for ProtocolTranscript<T>

type Label = [u8; 8]