Crate redjubjub[−][src]
A minimal RedJubjub implementation for use in Zebra.
Two parameterizations of RedJubjub are used in Zcash, one for
BindingSig
and one for SpendAuthSig
. This library distinguishes
these in the type system, using the sealed SigType
trait as a
type-level enum.
In addition to the Signature
, SigningKey
, VerificationKey
types,
the library also provides VerificationKeyBytes
, a refinement of a
[u8; 32]
indicating that bytes represent an encoding of a RedJubjub
verification key. This allows the VerificationKey
type to cache
verification checks related to the verification key encoding.
Examples
Creating a BindingSig
, serializing and deserializing it, and
verifying the signature:
use rand::thread_rng; use redjubjub::*; let msg = b"Hello!"; // Generate a secret key and sign the message let sk = SigningKey::<Binding>::new(thread_rng()); let sig = sk.sign(thread_rng(), msg); // Types can be converted to raw byte arrays using From/Into let sig_bytes: [u8; 64] = sig.into(); let pk_bytes: [u8; 32] = VerificationKey::from(&sk).into(); // Deserialize and verify the signature. let sig: Signature<Binding> = sig_bytes.into(); assert!( VerificationKey::try_from(pk_bytes) .and_then(|pk| pk.verify(msg, &sig)) .is_ok() );
docs
cargo doc --features "nightly" --open
Docs require the nightly
feature until RFC 1990 lands.
Modules
batch | Performs batch RedJubjub signature verification. |
frost | An implementation of FROST (Flexible Round-Optimized Schnorr Threshold) signatures. |
Structs
Signature | A RedJubJub signature. |
SigningKey | A RedJubJub signing key. |
VerificationKey | A valid RedJubJub verification key. |
VerificationKeyBytes | A refinement type for |
Enums
Binding | A type variable corresponding to Zcash’s |
Error | An error related to RedJubJub signatures. |
SpendAuth | A type variable corresponding to Zcash’s |
Traits
SigType | Abstracts over different RedJubJub parameter choices, |
Type Definitions
Randomizer | An element of the JubJub scalar field used for randomization of public and secret keys. |