Add support for long keyID values (#77)

* Add support for long keyID values

* Update index.bs

Co-authored-by: Martin Thomson <[email protected]>

* Update index.bs

* Update index.bs

* Add BigInt workaround

* BigInt link fix

Co-authored-by: Martin Thomson <[email protected]>

Author: youennf

index.bs

@@ -28,6 +28,9 @@ spec:webidl; type:dfn; text:resolve
 <pre class=link-defaults>
 spec:streams; type:interface; text:ReadableStream
 </pre>
+<pre class=anchors>
+url: https://heycam.github.io/webidl/#idl-bigint; type: interface; text: BigInt
+</pre>
 
 # Introduction # {#introduction}
 
@@ -191,10 +194,13 @@ dictionary SFrameTransformOptions {
     SFrameTransformRole role = "encrypt";
 };
 
+typedef [EnforceRange] unsigned long long SmallCryptoKeyID;
+typedef (SmallCryptoKeyID or BigInt) CryptoKeyID;
+
 [Exposed=(Window,DedicatedWorker)]
 interface SFrameTransform {
     constructor(optional SFrameTransformOptions options = {});
-    Promise<undefined> setEncryptionKey(CryptoKey key, optional unsigned long long keyID);
+    Promise<undefined> setEncryptionKey(CryptoKey key, optional CryptoKeyID keyID);
 };
 SFrameTransform includes GenericTransformStream;
 </xmp>
@@ -227,11 +233,12 @@ The SFrame transform algorithm, given |sframe| as a SFrameTransform object and |
 ## Methods
 The <dfn method for="SFrameTransform">setEncryptionKey(|key|, |keyID|)</dfn> method steps are:
 1. Let |promise| be [=a new promise=].
-2.  [=In parallel=], run the following steps:
+2. If |keyID| is a {{BigInt}} which cannot be represented as a integer between 0 and 2<sup>64</sup>-1 inclusive, [=reject=] |promise| with a {{RangeError}} exception.
+3. Otherwise, [=in parallel=], run the following steps:
     1. Set |key| with its optional |keyID| as key material to use for the SFrame transform algorithm, as defined by the <a href="https://datatracker.ietf.org/doc/draft-omara-sframe/">SFrame specification</a>.
-    2. If setting the key material fails, [=Reject=] |promise| with an {{InvalidModificationError}} error and abort these steps.
+    2. If setting the key material fails, [=reject=] |promise| with an {{InvalidModificationError}} exception and abort these steps.
     3. [=Resolve=] |promise| with undefined.
-3. Return |promise|.
+4. Return |promise|.
 
 
 # RTCRtpScriptTransform # {#scriptTransform}