bugfix: split awn arn correctly

Author: d4mr

src/server/utils/wallets/awsKmsArn.ts

@@ -2,7 +2,13 @@
  * Split an AWS KMS ARN into its parts.
  */
 export function splitAwsKmsArn(arn: string) {
+  // arn:aws:kms:<region>:<account-id>:key/<key-id>
   const parts = arn.split(":");
+  const keyId = parts[parts.length - 1].split("/")[1];
+
+  if (!keyId) {
+    throw new Error("Invalid AWS KMS ARN");
+  }
 
   if (parts.length < 6) {
     throw new Error("Invalid AWS KMS ARN");
@@ -11,7 +17,7 @@ export function splitAwsKmsArn(arn: string) {
   return {
     region: parts[3],
     accountId: parts[4],
-    keyId: parts[parts.length - 1],
+    keyId,
   };
 }