Add aggregation into e2e tests

common/nym-compact-ecash/src/scheme/mod.rs

@@ -123,3 +123,13 @@ pub struct Wallet {
     v: Scalar,
     idx: Option<SignerIndex>,
 }
+
+impl Wallet {
+    pub fn signature(&self) -> &Signature { &self.sig }
+    pub fn v(&self) -> Scalar {
+        self.v
+    }
+    pub fn index(&self) -> Option<SignerIndex> {
+        self.idx
+    }
+}

common/nym-compact-ecash/src/scheme/withdrawal.rs

@@ -24,6 +24,14 @@ pub struct RequestInfo {
     t: Scalar,
 }
 
+impl RequestInfo {
+    pub fn get_com(&self) -> G1Projective { self.com_hash }
+    pub fn get_com_openings(&self) -> Scalar { self.com_opening }
+    pub fn get_pc_coms_openings(&self) -> &Vec<Scalar> { &self.pc_coms_openings }
+    pub fn get_v(&self) -> Scalar { self.v }
+    pub fn get_t(&self) -> Scalar { self.t }
+}
+
 pub fn withdrawal_request(
     params: &Parameters,
     sk_user: &SecretKeyUser,

common/nym-compact-ecash/src/tests/e2e.rs

@@ -1,12 +1,12 @@
 use itertools::izip;
 
 use crate::error::CompactEcashError;
-use crate::scheme::aggregation::aggregate_verification_keys;
+use crate::scheme::{SignatureShare, Wallet};
+use crate::scheme::aggregation::{aggregate_signature_shares, aggregate_verification_keys};
 use crate::scheme::keygen::{
     generate_keypair_user, PublicKeyUser, SecretKeyUser, ttp_keygen, VerificationKeyAuth,
 };
 use crate::scheme::setup::Parameters;
-use crate::scheme::Wallet;
 use crate::scheme::withdrawal::{issue_verify, issue_wallet, withdrawal_request};
 
 #[test]
@@ -42,5 +42,16 @@ fn main() -> Result<(), CompactEcashError> {
         .map(|(w, vk)| issue_verify(&params, vk, &user_keypair.secret_key(), w, &req_info).unwrap())
         .collect();
 
+    // Aggregate partial wallets
+    let signature_shares: Vec<SignatureShare> = unblinded_wallet_shares
+        .iter()
+        .enumerate()
+        .map(|(idx, wallet)| SignatureShare::new(*wallet.signature(), (idx + 1) as u64))
+        .collect();
+
+    let attributes = vec![user_keypair.secret_key().sk, req_info.get_v(), req_info.get_t()];
+    let aggregated_signature =
+        aggregate_signature_shares(&params, &verification_key, &attributes, &signature_shares)?;
+
     Ok(())
 }