feat: add support for EcdsaK256Sha256

Author: Ansonhkg

packages/constants/src/lib/constants/constants.ts

@@ -1246,12 +1246,34 @@ export const VMTYPE = {
 export type VMTYPE_TYPE = keyof typeof VMTYPE;
 export type VMTYPE_VALUES = (typeof VMTYPE)[keyof typeof VMTYPE];
 
+// pub enum SigningScheme {
+
+//  -- BLS
+//   Bls12381,
+
+//  -- ECDSA
+//   EcdsaK256Sha256,
+//   EcdsaP256Sha256,
+//   EcdsaP384Sha384,
+
+//  -- Frost
+//   SchnorrEd25519Sha512,
+//   SchnorrK256Sha256,
+//   SchnorrP256Sha256,
+//   SchnorrP384Sha384,
+//   SchnorrRistretto25519Sha512,
+//   SchnorrEd448Shake256,
+//   SchnorrRedJubjubBlake2b512,
+//   SchnorrK256Taproot,
+//   SchnorrRedDecaf377Blake2b512,
+//   SchnorrkelSubstrate,
+// }
 export const LIT_CURVE = {
   BLS: 'BLS',
   EcdsaK256: 'K256',
   EcdsaCaitSith: 'ECDSA_CAIT_SITH', // Legacy alias of K256
   EcdsaCAITSITHP256: 'EcdsaCaitSithP256',
-  EcdsaK256Sha256: 'EcdsaK256Sha256',
+  EcdsaK256Sha256: 'EcdsaK256Sha256', // same as caitsith 
 } as const;
 
 export type LIT_CURVE_TYPE = keyof typeof LIT_CURVE;

packages/lit-node-client-nodejs/src/lib/lit-node-client-nodejs.ts

@@ -1197,24 +1197,29 @@ export class LitNodeClientNodeJs
 
     logWithRequestId(
       requestId,
-      'responseData',
+      'pkpSign responseData',
       JSON.stringify(responseData, null, 2)
     );
 
     // ========== Extract shares from response data ==========
     // -- 1. combine signed data as a list, and get the signatures from it
     const signedDataList = parsePkpSignResponse(responseData);
 
-    const signatures = await getSignatures<{ signature: SigResponse }>({
-      requestId,
-      networkPubKeySet: this.networkPubKeySet,
-      minNodeCount: this.config.minNodeCount,
-      signedData: signedDataList,
-    });
+    try {
+      const signatures = await getSignatures<{ signature: SigResponse }>({
+        requestId,
+        networkPubKeySet: this.networkPubKeySet,
+        minNodeCount: this.config.minNodeCount,
+        signedData: signedDataList,
+      });
 
-    logWithRequestId(requestId, `signature combination`, signatures);
+      logWithRequestId(requestId, `signature combination`, signatures);
 
-    return signatures.signature; // only a single signature is ever present, so we just return it.
+      return signatures.signature; // only a single signature is ever present, so we just return it.
+    } catch (e) {
+      console.error("Error getting signature", e);
+      throw e;
+    }
   };
 
   /**
@@ -1992,8 +1997,6 @@ export class LitNodeClientNodeJs
 
     // console.log("priceFeedInfo:", priceFeedInfo);
 
-    // process.exit();
-
     // This is the template that will be combined with the node address as a single object, then signed by the session key
     // so that the node can verify the session signature
     const sessionSigningTemplate = {

packages/types/src/lib/interfaces.ts

@@ -671,7 +671,8 @@ export interface SigShare {
   | 'BLS'
   | 'K256'
   | 'ECDSA_CAIT_SITH' // Legacy alias of K256
-  | 'EcdsaCaitSithP256';
+  | 'EcdsaCaitSithP256'
+  | 'EcdsaK256Sha256'
 
   signatureShare: string;
   shareIndex?: number;