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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,139 @@ | ||
| use ergotree_interpreter::sigma_protocol::{ | ||
| dlog_protocol::interactive_prover::first_message_deterministic, | ||
| private_input::PrivateInput, | ||
| prover::{ | ||
| hint::{CommitmentHint, Hint, HintsBag, OwnCommitment, RealCommitment}, | ||
| Prover, | ||
| }, | ||
| unproven_tree::NodePosition, | ||
| FirstProverMessage, | ||
| }; | ||
| use ergotree_ir::sigma_protocol::sigma_boolean::{SigmaBoolean, SigmaProofOfKnowledgeTree}; | ||
|
|
||
| pub(super) fn generate_commitments_for<P: Prover + ?Sized>( | ||
| prover: &P, | ||
| sigma_tree: &SigmaBoolean, | ||
| msg: &[u8], | ||
| aux_rand: &[u8], | ||
| ) -> Option<HintsBag> { | ||
| let position = NodePosition::crypto_tree_prefix(); | ||
| match sigma_tree { | ||
| SigmaBoolean::ProofOfKnowledge(SigmaProofOfKnowledgeTree::ProveDlog(pk)) => { | ||
| let PrivateInput::DlogProverInput(sk) = prover | ||
| .secrets() | ||
| .iter() | ||
| .find(|secret| secret.public_image() == *sigma_tree)? | ||
| .clone() | ||
| else { | ||
| return None; | ||
| }; | ||
| let (r, a) = first_message_deterministic(&sk, msg, aux_rand); | ||
| let mut bag = HintsBag::empty(); | ||
| let own_commitment: Hint = | ||
| Hint::CommitmentHint(CommitmentHint::OwnCommitment(OwnCommitment { | ||
| image: SigmaBoolean::ProofOfKnowledge(pk.clone().into()), | ||
| secret_randomness: r, | ||
| commitment: FirstProverMessage::FirstDlogProverMessage(a.clone()), | ||
| position: position.clone(), | ||
| })); | ||
| let real_commitment: Hint = | ||
| Hint::CommitmentHint(CommitmentHint::RealCommitment(RealCommitment { | ||
| image: SigmaBoolean::ProofOfKnowledge(pk.clone().into()), | ||
| commitment: FirstProverMessage::FirstDlogProverMessage(a), | ||
| position, | ||
| })); | ||
| bag.add_hint(real_commitment); | ||
| bag.add_hint(own_commitment); | ||
| Some(bag) | ||
| } | ||
| SigmaBoolean::TrivialProp(_) | ||
| | SigmaBoolean::ProofOfKnowledge(_) | ||
| | SigmaBoolean::SigmaConjecture(_) => None, | ||
| } | ||
| } | ||
|
|
||
| #[cfg(test)] | ||
| #[allow(clippy::unwrap_used, clippy::unreachable, clippy::panic)] | ||
| mod test { | ||
| use ergo_chain_types::EcPoint; | ||
| use ergotree_interpreter::sigma_protocol::dlog_protocol::interactive_prover::compute_commitment; | ||
| use ergotree_interpreter::sigma_protocol::sig_serializer::parse_sig_compute_challenges; | ||
| use ergotree_interpreter::sigma_protocol::unchecked_tree::{UncheckedLeaf, UncheckedTree}; | ||
| use ergotree_interpreter::sigma_protocol::{private_input::DlogProverInput, wscalar::Wscalar}; | ||
| use ergotree_ir::chain::context_extension::ContextExtension; | ||
| use ergotree_ir::chain::ergo_box::box_value::BoxValue; | ||
| use ergotree_ir::chain::ergo_box::NonMandatoryRegisters; | ||
| use ergotree_ir::chain::ergo_box::{arbitrary::ArbBoxParameters, ErgoBox}; | ||
| use ergotree_ir::sigma_protocol::sigma_boolean::SigmaProofOfKnowledgeTree; | ||
| use proptest::collection::vec; | ||
| use proptest::prelude::*; | ||
| use sigma_test_util::force_any_val; | ||
|
|
||
| use crate::chain::ergo_box::box_builder::ErgoBoxCandidateBuilder; | ||
| use crate::chain::transaction::unsigned::UnsignedTransaction; | ||
| use crate::chain::transaction::{Input, Transaction, UnsignedInput}; | ||
| use crate::wallet::secret_key::SecretKey; | ||
| use crate::wallet::signing::TransactionContext; | ||
| use crate::wallet::Wallet; | ||
| fn gen_boxes() -> impl Strategy<Value = (SecretKey, Vec<ErgoBox>)> { | ||
| any::<Wscalar>() | ||
| .prop_map(|s| SecretKey::DlogSecretKey(DlogProverInput { w: s })) | ||
| .prop_flat_map(|sk: SecretKey| { | ||
| ( | ||
| Just(sk.clone()), | ||
| vec( | ||
| any_with::<ErgoBox>(ArbBoxParameters { | ||
| ergo_tree: Just(sk.get_address_from_public_image().script().unwrap()) | ||
| .boxed(), | ||
| registers: Just(NonMandatoryRegisters::empty()).boxed(), | ||
| tokens: Just(None).boxed(), | ||
| ..Default::default() | ||
| }), | ||
| 1..10, | ||
| ), | ||
| ) | ||
| }) | ||
| } | ||
|
|
||
| fn parse_sig(sk: &SecretKey, input: &Input) -> (EcPoint, Vec<u8>) { | ||
| let ergotree_ir::chain::address::Address::P2Pk(pk) = sk.get_address_from_public_image() | ||
| else { | ||
| unreachable!() | ||
| }; | ||
| let UncheckedTree::UncheckedLeaf(UncheckedLeaf::UncheckedSchnorr(schnorr)) = | ||
| parse_sig_compute_challenges( | ||
| &SigmaProofOfKnowledgeTree::from(pk.clone()).into(), | ||
| input.spending_proof.proof.clone().to_bytes(), | ||
| ) | ||
| .unwrap() | ||
| else { | ||
| unreachable!(); | ||
| }; | ||
| let commitment = compute_commitment(&pk, &schnorr.challenge, &schnorr.second_message); | ||
| (commitment, schnorr.challenge.into()) | ||
| } | ||
|
|
||
| proptest! { | ||
| // Produce signatures for different messages and test for nonce re-use | ||
| #[test] | ||
| fn test_sign_deterministic((sk, boxes) in gen_boxes()) { | ||
| let wallet = Wallet::from_secrets(vec![sk.clone()]); | ||
| let output = ErgoBoxCandidateBuilder::new(BoxValue::SAFE_USER_MIN, sk.get_address_from_public_image().script().unwrap(), 0).build().unwrap(); | ||
| let inputs: Vec<_> = boxes.iter().map(|b| UnsignedInput::new(b.box_id(), ContextExtension::empty())).collect(); | ||
| let txes: Vec<Transaction> = (1..10).map(|i| { | ||
| let mut output = output.clone(); | ||
| output.value = output.value.checked_mul_u32(i).unwrap(); | ||
| let tx = UnsignedTransaction::new_from_vec(inputs.clone(), vec![], vec![output]).unwrap(); | ||
| wallet.sign_transaction_deterministic(TransactionContext::new(tx, boxes.clone(), vec![]).unwrap(), &force_any_val(), &[]).unwrap() | ||
| }).collect(); | ||
| let signatures: Vec<_> = txes.iter().flat_map(|tx| tx.inputs.iter()).map(|input| parse_sig(&sk, input)).collect(); | ||
|
|
||
| for (i, (r, c)) in signatures.iter().enumerate() { | ||
| if let Some((_, _)) = signatures.iter().enumerate().find(|(j, (r1, c1))| i != *j && r1 == r && c != c1) { | ||
| panic!(); | ||
| } | ||
| } | ||
|
|
||
| } | ||
| } | ||
| } |
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