fix: some last nits

Signed-off-by: Martin Auer <martin.auer97@gmail.com>

Author: auer-martin

packages/common/lib/dpop/DPoP.ts

@@ -6,6 +6,8 @@ import { v4 as uuidv4 } from 'uuid';
 import {
   calculateJwkThumbprint,
   CreateJwtCallback,
+  epochTime,
+  getNowSkewed,
   JWK,
   JwtHeader,
   JwtIssuerJwk,
@@ -20,32 +22,6 @@ export interface DPoPJwtIssuerWithContext extends JwtIssuerJwk {
   dPoPSigningAlgValuesSupported?: string[];
 }
 
-/**
- * The maximum allowed clock skew time in seconds. If an time based validation
- * is performed against current time (`now`), the validation can be of by the skew
- * time.
- *
- * See https://datatracker.ietf.org/doc/html/rfc7519#section-4.1.5
- */
-const DEFAULT_SKEW_TIME = 300;
-
-function getNowSkewed(now?: number, skewTime?: number) {
-  const _now = now ? now : epochTime();
-  const _skewTime = skewTime ? skewTime : DEFAULT_SKEW_TIME;
-
-  return {
-    nowSkewedPast: _now - _skewTime,
-    nowSkewedFuture: _now + _skewTime,
-  };
-}
-
-/**
- * Returns the current unix timestamp in seconds.
- */
-function epochTime() {
-  return Math.floor(Date.now() / 1000);
-}
-
 export type DPoPJwtPayloadProps = {
   htu: string;
   iat: number;

packages/common/lib/jwt/jwtUtils.ts

@@ -15,3 +15,29 @@ export function parseJWT<Header = JwtHeader, Payload = JwtPayload>(jwt: string)
   }
   return { header, payload };
 }
+
+/**
+ * The maximum allowed clock skew time in seconds. If an time based validation
+ * is performed against current time (`now`), the validation can be of by the skew
+ * time.
+ *
+ * See https://datatracker.ietf.org/doc/html/rfc7519#section-4.1.5
+ */
+const DEFAULT_SKEW_TIME = 300;
+
+export function getNowSkewed(now?: number, skewTime?: number) {
+  const _now = now ? now : epochTime();
+  const _skewTime = skewTime ? skewTime : DEFAULT_SKEW_TIME;
+
+  return {
+    nowSkewedPast: _now - _skewTime,
+    nowSkewedFuture: _now + _skewTime,
+  };
+}
+
+/**
+ * Returns the current unix timestamp in seconds.
+ */
+export function epochTime() {
+  return Math.floor(Date.now() / 1000);
+}