add verify bls signature after it generated

ssvlabs · May 21, 2023 · 78def1e · 78def1e
1 parent f0facbe
commit 78def1e
Show file tree

Hide file tree

Showing 10 changed files with 39 additions and 10 deletions.
diff --git a/dist/esbuild/main.js b/dist/esbuild/main.js
diff --git a/dist/esbuild/main.js.map b/dist/esbuild/main.js.map
diff --git a/dist/tsc/src/lib/KeyShares/KeyShares.js b/dist/tsc/src/lib/KeyShares/KeyShares.js
diff --git a/dist/tsc/src/lib/KeyShares/KeyShares.js.map b/dist/tsc/src/lib/KeyShares/KeyShares.js.map
diff --git a/dist/tsc/src/lib/helpers/web3.helper.d.ts b/dist/tsc/src/lib/helpers/web3.helper.d.ts
@@ -50,3 +50,4 @@ export declare const buildSignature: (dataToSign: string, privateKeyHex: string)
  * computes the Keccak-256 hash of the signed data, and verifies the signature using the deserialized public key.
  */
 export declare const validateSignature: (signedData: string, signatureHex: string, publicKey: string) => Promise<void>;
+export declare const privateToPublicKey: (privateKey: string) => Promise<string>;
diff --git a/dist/tsc/src/lib/helpers/web3.helper.js b/dist/tsc/src/lib/helpers/web3.helper.js
diff --git a/dist/tsc/src/lib/helpers/web3.helper.js.map b/dist/tsc/src/lib/helpers/web3.helper.js.map
diff --git a/examples/example-02/package.json b/examples/example-02/package.json
@@ -9,7 +9,7 @@
   "license": "ISC",
   "dependencies": {
     "js-base64": "^3.7.2",
-    "ssv-keys": "https://github.com/bloxapp/ssv-keys.git#v0.0.19",
+    "ssv-keys": "https://github.com/bloxapp/ssv-keys.git#v3",
     "web3": "^1.7.4"
   },
   "devDependencies": {

diff --git a/src/lib/KeyShares/KeyShares.ts b/src/lib/KeyShares/KeyShares.ts
@@ -87,7 +87,15 @@ export class KeyShares {
     const signature = await web3Helper.buildSignature(`${address}:${ownerNonce}`, privateKey);
     const signSharesBytes = web3Helper.hexArrayToBytes([signature, payload.shares]);
 
-    payload.shares = `0x${signSharesBytes.toString('hex')}`
+    payload.shares = `0x${signSharesBytes.toString('hex')}`;
+
+    // verify signature
+    await this.validateSingleShares(payload.shares, {
+      ownerAddress,
+      ownerNonce,
+      publicKey: await web3Helper.privateToPublicKey(privateKey),
+    });
+
     return payload;
   }
 

diff --git a/src/lib/helpers/web3.helper.ts b/src/lib/helpers/web3.helper.ts
@@ -108,3 +108,10 @@ export const validateSignature = async(signedData: string, signatureHex: string,
     throw new SingleSharesSignatureInvalid(signatureHex, 'Single shares signature is invalid');
   }
 }
+
+export const privateToPublicKey = async(privateKey: string): Promise<string> => {
+  if (!bls.deserializeHexStrToSecretKey) {
+    await bls.init(bls.BLS12_381);
+  }
+  return `0x${bls.deserializeHexStrToSecretKey(privateKey.replace('0x', '')).getPublicKey().serializeToHexStr()}`;
+}