Merge pull request #860 from starbackr-dev/patch-2

Adding encryption NIP-90 Data Vending Machine

90.md

@@ -67,6 +67,37 @@ All tags are optional.
 * `relays`: List of relays where Service Providers SHOULD publish responses to
 * `p`: Service Providers the customer is interested in. Other SPs MIGHT still choose to process the job
 
+## 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
+
+```json
+[
+    [ "i", "what is the capital of France? ", "text" ],
+    [ "param", "model", "LLaMA-2" ],
+    [ "param", "max_tokens", "512" ],
+    [ "param", "temperature", "0.5" ],
+    [ "param", "top-k", "50" ],
+    [ "param", "top-p", "0.7" ],
+    [ "param", "frequency_penalty", "1" ]
+    
+]
+
+```
+
+This param data will be encrypted and added to the `content` field and `p` tag should be present 
+
+```
+"content": "BE2Y4xvS6HIY7TozIgbEl3sAHkdZoXyLRRkZv4fLPh3R7LtviLKAJM5qpkC7D6VtMbgIt4iNcMpLtpo...",
+    "tags": [
+        ["p", "04f74530a6ede6b24731b976b8e78fb449ea61f40ff10e3d869a3030c4edc91f"],
+        ["encrypted"]
+    ]
+
+
+```
+
+
 ## Job result (`kind:6000-6999`)
 
 Service providers publish job results, providing the output of the job result. They should tag the original job request event id as well as the customer's pubkey.
@@ -90,6 +121,27 @@ Service providers publish job results, providing the output of the job result. T
 * `amount`: millisats that the Service Provider is requesting to be paid. An optional third value can be a bolt11 invoice.
 * `i`: The original input(s) specified in the request.
 
+## Encrypted Output
+
+If the request has encrypted params, then output should be encrypted and placed in  `content` field. If the output is encrypted, then avoid including `i` tag with input-data as clear text. 
+Add a tag encrypted to mark the output content as `encrypted`
+```json
+{
+    "pubkey": "<service-provider pubkey>",
+    "content": "<encrypted payload>",
+    "kind": 6xxx,
+    "tags": [
+        [ "request", "<job-request>" ],
+        [ "e", "<job-request-id>", "<relay-hint>" ],
+        [ "p", "<customer's-pubkey>" ],
+        [ "amount", "requested-payment-amount", "<optional-bolt11>" ],
+        ["encrypted"]
+
+    ]
+}
+```
+ 
+
 ## Job feedback
 Service providers can give feedback about a job back to the customer.
 
@@ -110,6 +162,8 @@ Service providers can give feedback about a job back to the customer.
 * `amount` tag: as defined in the [Job Result](#job-result) section.
 * `status` tag: Service Providers SHOULD indicate what this feedback status refers to. [Appendix 1](#appendix-1-job-feedback-status) defines status. Extra human-readable information can be added as an extra argument.
 
+* NOTE: If the input params requires input to be encryped, then `content` field will have encrypted payload with `p` tag as key.
+
 ### Job feedback status
 
 | status | description |