feat: support BLS (Boneh-Lynn-Shacham) signature (#579)

Map privatekey to bls primefield
Map publickey to projective point of G2
Implemented sign and verify of bls
implementation of bls aggregate
The msg is extending with prefix "BLS_SIG_BLS12381G2_XMD:SHA-256_SSWU_RO_NUL_ which is as same as filecoin's implementation.

.github/workflows/qaci.yml

@@ -53,7 +53,7 @@ jobs:
       - name: Run core browser tests
         uses: coactions/setup-xvfb@v1
         with:
-          run: cargo test -p rings-core --target=wasm32-unknown-unknown --features wasm --no-default-features
+          run: cargo test -p rings-core --release --target=wasm32-unknown-unknown --features wasm --no-default-features
           working-directory: ./
 
       - name: Run node browser tests
@@ -64,7 +64,7 @@ jobs:
 
   build:
     name: Build and test
-    timeout-minutes: 25
+    timeout-minutes: 30
     strategy:
       matrix:
         os: ["ubuntu-latest"]

crates/core/Cargo.toml

@@ -42,6 +42,11 @@ browser_chrome_test = ["wasm"]
 
 [dependencies]
 # global
+ark-bls12-381 = "0.4.0"
+ark-ec = "0.4.2"
+ark-ff = "0.4.2"
+ark-serialize = "0.4.2"
+ark-std = "0.4.0"
 arrayref = "0.3.6"
 async-lock = "2.5.0"
 async-recursion = "1.0.0"

crates/core/src/ecc/elgamal.rs

@@ -117,7 +117,7 @@ pub fn affine_to_str(a: &[Affine]) -> Result<String> {
     field_to_str(a.iter().map(|x| x.x).collect::<Vec<Field>>().as_slice())
 }
 
-pub fn encrypt(s: &str, k: PublicKey) -> Result<Vec<(CurveEle, CurveEle)>> {
+pub fn encrypt(s: &str, k: PublicKey<33>) -> Result<Vec<(CurveEle<33>, CurveEle<33>)>> {
     let random_sar: Scalar = SecretKey::random().into();
     let mut h: Affine = k.try_into()?;
     h.y.normalize();
@@ -143,14 +143,14 @@ pub fn encrypt(s: &str, k: PublicKey) -> Result<Vec<(CurveEle, CurveEle)>> {
             (a_c1, a_c2)
         })
         .collect();
-    let mut ret: Vec<(CurveEle, CurveEle)> = vec![];
+    let mut ret: Vec<(CurveEle<33>, CurveEle<33>)> = vec![];
     for (c1, c2) in affines {
         ret.push((c1.try_into()?, c2.try_into()?))
     }
     Ok(ret)
 }
 
-pub fn decrypt(m: &[(CurveEle, CurveEle)], k: SecretKey) -> Result<String> {
+pub fn decrypt(m: &[(CurveEle<33>, CurveEle<33>)], k: SecretKey) -> Result<String> {
     let sar: Scalar = k.into();
     let cxt = ECMultContext::new_boxed();
     affine_to_str(