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3.4.a Panic if generators.len() != scalars.len() for MultiDLEqProof

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Luke Parker 2023-02-28 00:00:29 -05:00
parent 969a5d94f2
commit c1435a2045
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7
crypto/dleq/src/lib.rs
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@ -215,6 +215,7 @@ pub struct MultiDLEqProof<G: PrimeGroup> {
impl<G: PrimeGroup> MultiDLEqProof<G> { impl<G: PrimeGroup> MultiDLEqProof<G> {
/// Prove for each scalar that the series of points created by multiplying it against its /// Prove for each scalar that the series of points created by multiplying it against its
/// matching generators share a discrete logarithm. /// matching generators share a discrete logarithm.
/// This function panics if `generators.len() != scalars.len()`.
pub fn prove<R: RngCore + CryptoRng, T: Transcript>( pub fn prove<R: RngCore + CryptoRng, T: Transcript>(
rng: &mut R, rng: &mut R,
transcript: &mut T, transcript: &mut T,
@ -224,6 +225,12 @@ impl<G: PrimeGroup> MultiDLEqProof<G> {
where where
G::Scalar: Zeroize, G::Scalar: Zeroize,
{ {
assert_eq!(
generators.len(),
scalars.len(),
"amount of series of generators doesn't match the amount of scalars"
);
transcript.domain_separate(b"multi_dleq"); transcript.domain_separate(b"multi_dleq");
let mut nonces = vec![]; let mut nonces = vec![];