Struct Transcript 

pub struct Transcript { /* private fields */ }

Incremental transcript. Clone yields an independent fork, so a caller can seed a base transcript with the ssid and public parameters and fork it for every proof.

Implementations

impl Transcript

pub fn new(domain: &str) -> Self

Starts a transcript for domain, e.g. zk/sig (the version prefix is added here).

pub fn append(&mut self, label: &str, bytes: &[u8]) -> &mut Self

0x01 ‖ u32be(len(label)) ‖ label ‖ u64be(len(bytes)) ‖ bytes.

pub fn append_u64(&mut self, label: &str, v: u64) -> &mut Self

pub fn append_uint( &mut self, label: &str, x: &BoxedUint, len: usize, ) -> Result<&mut Self>

Big-endian, left-padded to len bytes; fails if the value does not fit.

pub fn append_residue( &mut self, label: &str, m: &Modulus, x: &Residue, ) -> Result<&mut Self>

Residue of m, encoded with the fixed width of the modulus.

pub fn append_sbig( &mut self, label: &str, x: &SBig, range: SRange, ) -> Result<&mut Self>

Signed value in the §10.2 format for the interval range.

pub fn challenge(&self, label: &str) -> Challenge

Forks the state and derives a challenge stream; the transcript itself is unchanged.

Trait Implementations

impl Clone for Transcript

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.