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5ede5b9e8f
The two-generator limit wasn't required nor beneficial. This does theoretically optimize FROST, yet not for any current constructions. A follow up proof which would optimize current constructions has been noted in #38. Adds explicit no_std support to the core DLEq proof. Closes #34.
58 lines
1.7 KiB
Rust
58 lines
1.7 KiB
Rust
#[cfg(feature = "experimental")]
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mod cross_group;
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use hex_literal::hex;
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use rand_core::OsRng;
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use ff::Field;
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use group::GroupEncoding;
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use k256::{Scalar, ProjectivePoint};
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use transcript::{Transcript, RecommendedTranscript};
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use crate::DLEqProof;
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#[test]
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fn test_dleq() {
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let transcript = || RecommendedTranscript::new(b"DLEq Proof Test");
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let generators = [
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ProjectivePoint::GENERATOR,
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ProjectivePoint::from_bytes(
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&(hex!("0250929b74c1a04954b78b4b6035e97a5e078a5a0f28ec96d547bfee9ace803ac0").into())
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).unwrap(),
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// Just an increment of the last byte from the previous, where the previous two are valid
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ProjectivePoint::from_bytes(
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&(hex!("0250929b74c1a04954b78b4b6035e97a5e078a5a0f28ec96d547bfee9ace803ac4").into())
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).unwrap(),
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ProjectivePoint::from_bytes(
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&(hex!("0250929b74c1a04954b78b4b6035e97a5e078a5a0f28ec96d547bfee9ace803aca").into())
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).unwrap(),
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ProjectivePoint::from_bytes(
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&(hex!("0250929b74c1a04954b78b4b6035e97a5e078a5a0f28ec96d547bfee9ace803acb").into())
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).unwrap()
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];
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for i in 0 .. 5 {
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let key = Scalar::random(&mut OsRng);
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let proof = DLEqProof::prove(&mut OsRng, &mut transcript(), &generators[.. i], key);
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let mut keys = [ProjectivePoint::GENERATOR; 5];
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for k in 0 .. 5 {
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keys[k] = generators[k] * key;
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}
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proof.verify(&mut transcript(), &generators[.. i], &keys[.. i]).unwrap();
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#[cfg(feature = "serialize")]
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{
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let mut buf = vec![];
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proof.serialize(&mut buf).unwrap();
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let deserialized = DLEqProof::<ProjectivePoint>::deserialize(
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&mut std::io::Cursor::new(&buf)
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).unwrap();
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assert_eq!(proof, deserialized);
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}
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}
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}
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