fix fayda

apps/edr-freight-api/src/modules/verifayda/utils/client-assertion.util.ts

@@ -0,0 +1,22 @@
+import { SignJWT, importJWK, type JWK } from 'jose';
+
+export interface GenerateClientAssertionInput {
+  clientId: string;
+  audience: string;
+  privateJwk: JWK;
+  expiresIn?: string;
+}
+
+export async function generateClientAssertion(
+  input: GenerateClientAssertionInput,
+): Promise<string> {
+  const privateKey = await importJWK(input.privateJwk, 'RS256');
+  return new SignJWT({})
+    .setProtectedHeader({ alg: 'RS256', typ: 'JWT' })
+    .setIssuer(input.clientId)
+    .setSubject(input.clientId)
+    .setAudience(input.audience)
+    .setIssuedAt()
+    .setExpirationTime(input.expiresIn ?? '2m')
+    .sign(privateKey);
+}