feat: Fragment generator | NPG-0000

Cargo.toml

@@ -58,6 +58,7 @@ members = [
   "src/vit-servicing-station-f10/vit-servicing-station-lib-f10",
   "src/vit-servicing-station-f10/vit-servicing-station-server-f10",
   "src/vit-servicing-station-f10/vit-servicing-station-tests-f10",
+  "src/sign",
 ]
 
 [workspace.dependencies]

src/chain-libs/chain-impl-mockchain/src/transaction/transaction.rs

@@ -265,6 +265,7 @@ pub(super) struct TransactionStruct {
 /// Verify the structure of the transaction and return all the offsets
 fn get_spine<P: Payload>(slice: &[u8]) -> Result<TransactionStruct, TransactionStructError> {
     let sz = slice.len();
+
     let mut codec = Codec::new(slice);
 
     // read payload

src/chain-libs/chain-vote/src/cryptography/zkps/unit_vector/zkp.rs

@@ -293,6 +293,17 @@ impl Zkp {
         self.ibas.iter()
     }
 
+    /// Return announcement commitments group elements
+    pub fn announcments_group_elements(&self) -> Vec<GroupElement> {
+        let mut announcements = Vec::new();
+        for g in self.ibas.clone() {
+            announcements.push(g.i);
+            announcements.push(g.b);
+            announcements.push(g.a)
+        }
+        announcements
+    }
+
     /// Return an iterator of the encryptions of the polynomial coefficients
     pub fn ds(&self) -> impl Iterator<Item = &Ciphertext> {
         self.ds.iter()
@@ -303,6 +314,18 @@ impl Zkp {
         self.zwvs.iter()
     }
 
+    /// Return an iterator of the response related to the randomness
+    pub fn response_randomness_group_elements(&self) -> Vec<Scalar> {
+        let mut response = Vec::new();
+        for z in self.zwvs.iter().clone() {
+            response.push(z.z.clone());
+            response.push(z.w.clone());
+            response.push(z.v.clone());
+        }
+
+        response
+    }
+
     /// Return R
     pub fn r(&self) -> &Scalar {
         &self.r

src/chain-libs/chain-vote/src/encrypted_vote.rs

@@ -219,6 +219,7 @@ mod tests {
     #[test]
     fn unit_vector() {
         let uv = UnitVector::new(5, 0).unwrap();
+
         assert_eq!(
             &uv.iter().collect::<Vec<_>>()[..],
             [true, false, false, false, false]

src/sign/Cargo.toml

@@ -0,0 +1,40 @@
+[package]
+name = "sign"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+chain-crypto = { path = "../chain-libs/chain-crypto" }
+chain-vote = { path = "../chain-libs/chain-vote" }
+jormungandr-lib = { path = "../jormungandr/jormungandr-lib" }
+chain-addr = { path = "../chain-libs/chain-addr" }
+chain-core = { path = "../chain-libs/chain-core" }
+chain-impl-mockchain = { path = "../chain-libs/chain-impl-mockchain" ,features= ["audit"]}
+chain-ser = { path = "../chain-libs/chain-ser" }
+chain-storage = { path = "../chain-libs/chain-storage" }
+
+
+hex = "0.4"
+cryptoxide = "0.4.2"
+rand_chacha = "0.3"
+
+clap = { version = "4", features = ["derive", "cargo"] }
+clap_complete_command = { version = "0.5" }
+
+color-eyre = "0.6"
+thiserror = "1.0.40"
+csv = "1.1"
+
+serde = "1.0"
+serde_json = "1.0"
+serde_yaml = "0.8.17"
+rand = "0.8.3"
+bech32 = "0.8"
+
+
+rand_core = { version = "0.5.1", default-features = false }
+
+
+ed25519-dalek = "1.0.1"

src/sign/README.md

@@ -0,0 +1,34 @@
+# Fragment generator and signer:
+
+## Specifications
+ [*see here for format.abnf*](../chain-libs/chain-impl-mockchain/doc/format.abnf)
+
+ [*see here for format.md*](../chain-libs/chain-impl-mockchain/doc/format.md)
+
+## Ingredients for generating a fragment
+
+- Election public key
+- Alice public key
+- Alice private key
+- proposal to vote on
+- vote plan id (hash of voteplan)
+
+*Example usage:*
+
+```
+cargo build --release -p sign
+```  
+
+*Generate raw fragment in byte representation*
+
+```bash
+
+ELECTION_PUB_KEY=ristretto255_votepk1ppxnuxrqa4728evnp2ues000uvwvwtxmtf77ejc29lknjuqqu44s4cfmja
+ALICE_SK=56e367979579e2ce27fbd305892b0706b7dede999a534a864a7430a5c6aefd3c
+ALICE_PK=ea084d2d80ed0ab681333d934efc56df3868d13d46a2de3b7f27f40b62e5344d
+PROPOSAL=5
+VOTE_PLAN_ID=36ad42885189a0ac3438cdb57bc8ac7f6542e05a59d1f2e4d1d38194c9d4ac7b
+
+./target/release/sign --election-pub-key $ELECTION_PUB_KEY --private-key $ALICE_SK --public-key $ALICE_PK --proposal $PROPOSAL --vote-plan-id $VOTE_PLAN_ID
+
+```