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https://github.com/plume-sig/zk-nullifier-sig.git
synced 2026-01-10 13:28:07 -05:00
initial commit
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Aayush G
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271
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11
Cargo.toml
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11
Cargo.toml
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[package]
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name = "zk-nullifier"
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version = "0.1.0"
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edition = "2021"
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# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
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[dependencies]
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crate = "0.0.2"
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digest = "0.10.3"
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ring = "0.16.20"
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4
README.md
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README.md
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# Proof of Concept of the Nullifier Sig
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`cargo install`
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`cargo run`
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src/main.rs
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src/main.rs
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use ring::{
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digest::{digest, SHA256}, // test, test_file,
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error::{self, Unspecified},
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rand,
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signature::{self, EcdsaKeyPair, EcdsaSigningAlgorithm, Signature},
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};
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fn print_type_of<T>(_: &T) {
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println!("{}", std::any::type_name::<T>())
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}
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// Assumes no malicious inputs.
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trait NullifierSig {
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fn nullifier_sig_sign(&self, m: String) -> Result<&[u8; 256], error::Unspecified>;
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fn nullifier_sig_verify(&self, sig: &[u8; 256], m: String) -> Result<bool, error::Unspecified>;
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}
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impl NullifierSig for EcdsaKeyPair {
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fn nullifier_sig_sign(&self, message: String) -> Result<&[u8; 256], error::Unspecified> {
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// Calculate e=HASH(m). (HASH ~= SHA-2, with the output converted to an integer.)
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// The digest (truncated message hash) is calculated the same as ECDSA
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let m = message.as_bytes();
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let alg = &SHA256;
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let rng = rand::SystemRandom::new();
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let h = digest(alg, m);
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let r: [u8; 256] = rand::generate(&rng).unwrap().expose();
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print_type_of(&r);
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return Ok(&[0; 256]);
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// let z = Self::from_be_bytes_reduced(z);
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// Ok((Signature::from_scalars(z, z)?, None))
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}
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fn nullifier_sig_verify(
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&self,
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sig: &[u8; 256],
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message: String,
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) -> Result<bool, error::Unspecified> {
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return Ok(true);
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}
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}
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fn main() {
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let message = String::from("example message");
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let message_verify = message.clone();
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let alg: &&EcdsaSigningAlgorithm = &&signature::ECDSA_P256_SHA256_ASN1_SIGNING;
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let rng = rand::SystemRandom::new();
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let pkcs8_bytes = signature::EcdsaKeyPair::generate_pkcs8(alg, &rng).unwrap();
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let test_keypair = signature::EcdsaKeyPair::from_pkcs8(alg, pkcs8_bytes.as_ref()).unwrap();
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let nullifier_signature = test_keypair.nullifier_sig_sign(message).unwrap();
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let verified = test_keypair
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.nullifier_sig_verify(nullifier_signature, message_verify)
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.unwrap();
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println!("verified: {}", verified);
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||||
}
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||||
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