From 0fa87af64b8e9f0f0cb68264f4dc22cc985acf91 Mon Sep 17 00:00:00 2001
From: Filip Skokan <panva.ip@gmail.com>
Date: Thu, 11 Nov 2021 21:51:57 +0100
Subject: [PATCH] fix(typescript): Compact JWS Header Parameters has alg and
 enc as required

---
 src/index.ts               | 1 +
 src/jwe/compact/decrypt.ts | 5 +++--
 src/jwe/compact/encrypt.ts | 4 ++--
 src/jwt/decrypt.ts         | 5 +++--
 src/jwt/encrypt.ts         | 6 +++---
 src/types.d.ts             | 9 +++++++++
 6 files changed, 21 insertions(+), 9 deletions(-)

diff --git a/src/index.ts b/src/index.ts
index ce3aabb1..6d77131e 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -89,4 +89,5 @@ export type {
   JWTVerifyResult,
   JWTDecryptResult,
   ResolvedKey,
+  CompactJWEHeaderParameters,
 } from './types.d'
diff --git a/src/jwe/compact/decrypt.ts b/src/jwe/compact/decrypt.ts
index e8a25449..3c29f3e4 100644
--- a/src/jwe/compact/decrypt.ts
+++ b/src/jwe/compact/decrypt.ts
@@ -4,7 +4,7 @@ import { decoder } from '../../lib/buffer_utils.js'
 import type {
   KeyLike,
   DecryptOptions,
-  JWEHeaderParameters,
+  CompactJWEHeaderParameters,
   GetKeyFunction,
   FlattenedJWE,
   CompactDecryptResult,
@@ -15,7 +15,8 @@ import type {
  * Interface for Compact JWE Decryption dynamic key resolution.
  * No token components have been verified at the time of this function call.
  */
-export interface CompactDecryptGetKey extends GetKeyFunction<JWEHeaderParameters, FlattenedJWE> {}
+export interface CompactDecryptGetKey
+  extends GetKeyFunction<CompactJWEHeaderParameters, FlattenedJWE> {}
 
 /**
  * Decrypts a Compact JWE.
diff --git a/src/jwe/compact/encrypt.ts b/src/jwe/compact/encrypt.ts
index 44070605..6f7a74d8 100644
--- a/src/jwe/compact/encrypt.ts
+++ b/src/jwe/compact/encrypt.ts
@@ -2,7 +2,7 @@ import { FlattenedEncrypt } from '../flattened/encrypt.js'
 import type {
   KeyLike,
   JWEKeyManagementHeaderParameters,
-  JWEHeaderParameters,
+  CompactJWEHeaderParameters,
   EncryptOptions,
 } from '../../types.d'
 
@@ -63,7 +63,7 @@ export class CompactEncrypt {
    *
    * @param protectedHeader JWE Protected Header object.
    */
-  setProtectedHeader(protectedHeader: JWEHeaderParameters) {
+  setProtectedHeader(protectedHeader: CompactJWEHeaderParameters) {
     this._flattened.setProtectedHeader(protectedHeader)
     return this
   }
diff --git a/src/jwt/decrypt.ts b/src/jwt/decrypt.ts
index 9d50bede..d2c0e443 100644
--- a/src/jwt/decrypt.ts
+++ b/src/jwt/decrypt.ts
@@ -4,7 +4,7 @@ import type {
   DecryptOptions,
   JWTClaimVerificationOptions,
   GetKeyFunction,
-  JWEHeaderParameters,
+  CompactJWEHeaderParameters,
   FlattenedJWE,
   JWTDecryptResult,
   ResolvedKey,
@@ -21,7 +21,8 @@ export interface JWTDecryptOptions extends DecryptOptions, JWTClaimVerificationO
  * Interface for JWT Decryption dynamic key resolution.
  * No token components have been verified at the time of this function call.
  */
-export interface JWTDecryptGetKey extends GetKeyFunction<JWEHeaderParameters, FlattenedJWE> {}
+export interface JWTDecryptGetKey
+  extends GetKeyFunction<CompactJWEHeaderParameters, FlattenedJWE> {}
 
 /**
  * Verifies the JWT format (to be a JWE Compact format), decrypts the ciphertext, validates the JWT Claims Set.
diff --git a/src/jwt/encrypt.ts b/src/jwt/encrypt.ts
index d616f0fe..e10c29d5 100644
--- a/src/jwt/encrypt.ts
+++ b/src/jwt/encrypt.ts
@@ -1,7 +1,7 @@
 import { CompactEncrypt } from '../jwe/compact/encrypt.js'
 import type {
   EncryptOptions,
-  JWEHeaderParameters,
+  CompactJWEHeaderParameters,
   JWEKeyManagementHeaderParameters,
   KeyLike,
 } from '../types.d'
@@ -31,7 +31,7 @@ export class EncryptJWT extends ProduceJWT {
 
   private _keyManagementParameters!: JWEKeyManagementHeaderParameters
 
-  private _protectedHeader!: JWEHeaderParameters
+  private _protectedHeader!: CompactJWEHeaderParameters
 
   private _replicateIssuerAsHeader!: boolean
 
@@ -46,7 +46,7 @@ export class EncryptJWT extends ProduceJWT {
    * Must contain an "alg" (JWE Algorithm) and "enc" (JWE
    * Encryption Algorithm) properties.
    */
-  setProtectedHeader(protectedHeader: JWEHeaderParameters) {
+  setProtectedHeader(protectedHeader: CompactJWEHeaderParameters) {
     if (this._protectedHeader) {
       throw new TypeError('setProtectedHeader can only be called once')
     }
diff --git a/src/types.d.ts b/src/types.d.ts
index c8150685..479618ac 100644
--- a/src/types.d.ts
+++ b/src/types.d.ts
@@ -720,3 +720,12 @@ export interface ResolvedKey {
    */
   key: KeyLike | Uint8Array
 }
+
+/**
+ * Recognized Compact JWE Header Parameters, any other Header Members
+ * may also be present.
+ */
+export interface CompactJWEHeaderParameters extends JWEHeaderParameters {
+  alg: string
+  enc: string
+}