Make project sd-jwt-vc compliant

examples/core-example/all.ts

@@ -53,7 +53,15 @@ import { createSignerVerifier, digest, generateSalt } from './utils';
 
   // Issue a signed JWT credential with the specified claims and disclosures
   // Return a Encoded SD JWT. Issuer send the credential to the holder
-  const credential = await sdjwt.issue(claims, disclosureFrame);
+  const credential = await sdjwt.issue(
+    {
+      iss: 'Issuer',
+      iat: new Date().getTime(),
+      vct: 'https://example.com',
+      ...claims,
+    },
+    disclosureFrame,
+  );
   console.log('encodedJwt:', credential);
 
   // Holder Receive the credential from the issuer and validate it

examples/core-example/basic.ts

@@ -30,7 +30,15 @@ import { createSignerVerifier, digest, generateSalt } from './utils';
 
   // Issue a signed JWT credential with the specified claims and disclosures
   // Return a Encoded SD JWT. Issuer send the credential to the holder
-  const credential = await sdjwt.issue(claims, disclosureFrame);
+  const credential = await sdjwt.issue(
+    {
+      iss: 'Issuer',
+      iat: new Date().getTime(),
+      vct: 'https://example.com',
+      ...claims,
+    },
+    disclosureFrame,
+  );
 
   // Holder Receive the credential from the issuer and validate it
   // Return a boolean result

examples/core-example/custom.ts

@@ -30,7 +30,15 @@ import { createSignerVerifier, digest, generateSalt } from './utils';
 
   // Issue a signed JWT credential with the specified claims and disclosures
   // Return a Encoded SD JWT. Issuer send the credential to the holder
-  const credential = await sdjwt.issue(claims, disclosureFrame);
+  const credential = await sdjwt.issue(
+    {
+      iss: 'Issuer',
+      iat: new Date().getTime(),
+      vct: 'https://example.com',
+      ...claims,
+    },
+    disclosureFrame,
+  );
   console.log('encodedJwt:', credential);
 
   // Holder Receive the credential from the issuer and validate it

examples/core-example/custom_header.ts

@@ -30,9 +30,18 @@ import { createSignerVerifier, digest, generateSalt } from './utils';
 
   // Issue a signed JWT credential with the specified claims and disclosures
   // Return a Encoded SD JWT. Issuer send the credential to the holder
-  const credential = await sdjwt.issue(claims, disclosureFrame, {
-    header: { typ: 'vc+sd-jwt', custom: 'data' }, // You can add custom header data to the SD JWT
-  });
+  const credential = await sdjwt.issue(
+    {
+      iss: 'Issuer',
+      iat: new Date().getTime(),
+      vct: 'https://example.com',
+      ...claims,
+    },
+    disclosureFrame,
+    {
+      header: { typ: 'vc+sd-jwt', custom: 'data' }, // You can add custom header data to the SD JWT
+    },
+  );
   console.log('encodedSdjwt:', credential);
 
   // You can check the custom header data by decoding the SD JWT

examples/core-example/decoy.ts

@@ -26,7 +26,15 @@ import { createSignerVerifier, digest, generateSalt } from './utils';
     _sd: ['id'],
     _sd_decoy: 1, // 1 decoy digest will be added in SD JWT
   };
-  const credential = await sdjwt.issue(claims, disclosureFrame);
+  const credential = await sdjwt.issue(
+    {
+      iss: 'Issuer',
+      iat: new Date().getTime(),
+      vct: 'https://example.com',
+      ...claims,
+    },
+    disclosureFrame,
+  );
   console.log('encodedSdjwt:', credential);
 
   // You can check the decoy digest in the SD JWT by decoding it

examples/core-example/kb.ts

@@ -34,7 +34,15 @@ import { createSignerVerifier, digest, generateSalt } from './utils';
     sd_hash: '1234',
   };
 
-  const encodedSdjwt = await sdjwt.issue(claims, disclosureFrame);
+  const encodedSdjwt = await sdjwt.issue(
+    {
+      iss: 'Issuer',
+      iat: new Date().getTime(),
+      vct: 'https://example.com',
+      ...claims,
+    },
+    disclosureFrame,
+  );
   console.log('encodedSdjwt:', encodedSdjwt);
   const sdjwttoken = await sdjwt.decode(encodedSdjwt);
   console.log(sdjwttoken);

package.json

@@ -1,5 +1,5 @@
 {
-  "name": "@sd-jwt/sd-jwt",
+  "name": "@sd-jwt/sd-jwt-vc",
   "version": "0.3.0",
   "description": "sd-jwt draft 7 implementation in typescript",
   "scripts": {

packages/core/src/index.ts

@@ -8,15 +8,22 @@ import {
   KB_JWT_TYP,
   SDJWTCompact,
   SDJWTConfig,
-  SD_JWT_TYP,
 } from '@sd-jwt/types';
 
 export * from './sdjwt';
 export * from './kbjwt';
 export * from './jwt';
 export * from './decoy';
 
-export class SDJwtInstance {
+export interface SDJwtPayload {
+  // more entries
+  [key: string]: unknown;
+}
+
+export abstract class SDJwtInstance<ExtendedPayload extends SDJwtPayload> {
+  //header type
+  protected abstract type: string;
+
   public static DEFAULT_hashAlg = 'sha-256';
 
   private userConfig: SDJWTConfig = {};
@@ -62,7 +69,7 @@ export class SDJwtInstance {
     return jwt.verify(this.userConfig.verifier);
   }
 
-  public async issue<Payload extends Record<string, unknown>>(
+  public async issue<Payload extends ExtendedPayload>(
     payload: Payload,
     disclosureFrame?: DisclosureFrame<Payload>,
     options?: {
@@ -81,6 +88,10 @@ export class SDJwtInstance {
       throw new SDJWTException('sign alogrithm not specified');
     }
 
+    if (disclosureFrame) {
+      this.validateReservedFields<Payload>(disclosureFrame);
+    }
+
     const hasher = this.userConfig.hasher;
     const hashAlg = this.userConfig.hashAlg ?? SDJwtInstance.DEFAULT_hashAlg;
 
@@ -94,7 +105,7 @@ export class SDJwtInstance {
     const OptionHeader = options?.header ?? {};
     const CustomHeader = this.userConfig.omitTyp
       ? OptionHeader
-      : { typ: SD_JWT_TYP, ...OptionHeader };
+      : { typ: this.type, ...OptionHeader };
     const header = { ...CustomHeader, alg };
     const jwt = new Jwt({
       header,
@@ -113,6 +124,10 @@ export class SDJwtInstance {
     return sdJwt.encodeSDJwt();
   }
 
+  protected abstract validateReservedFields<T extends ExtendedPayload>(
+    disclosureFrame: DisclosureFrame<T>,
+  ): void;
+
   public async present(
     encodedSDJwt: string,
     presentationKeys?: string[],