add NamedGroupList

Author: Srabutdotcom

deno.json

@@ -1,6 +1,6 @@
 {
   "name": "@tls/enum",
-  "version": "0.5.6",
+  "version": "0.5.7",
   "exports": "./src/mod.ts",
   "publish": {
     "exclude": ["dist/"]

src/namedgroup.js

@@ -167,7 +167,24 @@ export class KeyShareEntry extends Struct {
    }
 }
 
-
+export class NamedGroupList extends Constrained {
+   static from(array){
+      const copy = Uint8Array.from(array);
+      const lengthOf = Uint16.from(copy).value;
+      const namedGroups = new Set;
+      let offset = 2;
+      while(true){
+         const namedgroup = NamedGroup.from(copy.subarray(offset));offset+=2;
+         namedGroups.add(namedgroup);
+         if(offset>=lengthOf+2)break; 
+      }
+      return new NamedGroupList(...namedGroups)
+   }
+   constructor(...namedGroups){
+      super(2, 2**16-1, ...namedGroups.map(e=>e.Uint16));
+      this.namedGroups = namedGroups
+   }
+}
 
 
 

test/namedgroup_test.js

@@ -1,5 +1,5 @@
 import { assertEquals } from "jsr:@std/assert";
-import { NamedGroup } from "../src/namedgroup.js";
+import { NamedGroup, NamedGroupList } from "../src/namedgroup.js";
 
 Deno.test(
    "NamedGroup",
@@ -19,15 +19,9 @@ Deno.test(
    }
 )
 
-//const x25519 = NamedGroup.X25519.keyShareEntry(); 
 
-const x25519 = NamedGroup.X25519;
-      assertEquals(x25519.name, 'X25519')
-      const pub = x25519.keyGen.getPublicKey(x25519.privateKey);
-      assertEquals(pub.length, 32)
-      const peerPublicKey = crypto.getRandomValues(new Uint8Array(32));
-      assertEquals(peerPublicKey.length, 32)
-      const sharedKey = x25519.getSharedKey(peerPublicKey)
-      assertEquals(sharedKey.length, 32)
-
-debugger;
+Deno.test("NamedGroupList", () => {
+   const namedGroupList = new NamedGroupList(NamedGroup.X25519, NamedGroup.X448);
+   const backNGL = NamedGroupList.from(namedGroupList);
+   assertEquals(namedGroupList.toString(), backNGL.toString())
+})