From a1d348cfeab24c997bd908b274d8d1124241d627 Mon Sep 17 00:00:00 2001
From: Alex Gleason <alex@alexgleason.me>
Date: Sun, 26 May 2024 11:57:04 -0500
Subject: [PATCH] NIP-90: let "encrypted" tag have an optional value of `nip04`
 or `nip44`

---
 90.md | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/90.md b/90.md
index 5a15ebb6..fd5edc48 100644
--- a/90.md
+++ b/90.md
@@ -69,7 +69,15 @@ All tags are optional.
 
 ## Encrypted Params
 
-If the user wants to keep the input parameters a secret, they can encrypt the `i` and `param` tags with the service provider's 'p' tag and add it to the content field. Add a tag `encrypted` as tags. Encryption for private tags will use [NIP-04 - Encrypted Direct Message encryption](https://github.com/nostr-protocol/nips/blob/master/04.md), using the user's private and service provider's public key for the shared secret
+If the user wants to keep the input parameters a secret, they can encrypt the `i` and `param` tags with the service provider's 'p' tag and add it to the content field.
+
+Requests with encrypted content should include a tag like `["encrypted", <encryption>]`, where encryption is one of:
+
+- `nip04` for [NIP-04](https://github.com/nostr-protocol/nips/blob/master/04.md)
+- `nip44` for [NIP-44](https://github.com/nostr-protocol/nips/blob/master/44.md)
+- if not provided (eg `["encrypted"]`), the encryption method is assumed to be `nip04` for backwards-compatibility.
+
+Encryption for private tags will use the user's private and service provider's public key for the shared secret.
 
 ```json
 [
@@ -91,7 +99,7 @@ This param data will be encrypted and added to the `content` field and `p` tag s
   "content": "BE2Y4xvS6HIY7TozIgbEl3sAHkdZoXyLRRkZv4fLPh3R7LtviLKAJM5qpkC7D6VtMbgIt4iNcMpLtpo...",
   "tags": [
     ["p", "04f74530a6ede6b24731b976b8e78fb449ea61f40ff10e3d869a3030c4edc91f"],
-    ["encrypted"]
+    ["encrypted", "nip04"]
   ],
   ...
 }
@@ -137,7 +145,7 @@ Add a tag encrypted to mark the output content as `encrypted`
     ["e", "<job-request-id>", "<relay-hint>"],
     ["p", "<customer's-pubkey>"],
     ["amount", "requested-payment-amount", "<optional-bolt11>"],
-    ["encrypted"]
+    ["encrypted", "nip04"]
   ],
   ...
 }