Struct flexible_transcript::DigestTranscript

pub struct DigestTranscript<D: Clone + SecureDigest>(_);

A simple transcript format constructed around the specified hash algorithm.

Trait Implementations

impl<D: Clone + Clone + SecureDigest> Clone for DigestTranscript<D>

fn clone(&self) -> DigestTranscript<D>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<D: Debug + Clone + SecureDigest> Debug for DigestTranscript<D>

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

Formats the value using the given formatter.

impl<D: Clone + SecureDigest> Transcript for DigestTranscript<D>

type Challenge = GenericArray<u8, <D as OutputSizeUser>::OutputSize>

fn new(name: &'static [u8]) -> Self

Create a new transcript with the specified name.

fn domain_separate(&mut self, label: &'static [u8])

Apply a domain separator to the transcript.

fn append_message<M: AsRef<[u8]>>(&mut self, label: &'static [u8], message: M)

Append a message to the transcript.

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

Produce a challenge. This MUST update the transcript as it does so, preventing the same challenge from being generated multiple times.

fn rng_seed(&mut self, label: &'static [u8]) -> [u8; 32]

Produce a RNG seed. Helper function for parties needing to generate random data from an agreed upon state. Internally calls the challenge function for the needed bytes, converting them to the seed format rand_core expects.