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Adds key aliases to NIP-17

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Vitor Pamplona 2024-06-13 10:34:56 -04:00
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@ -108,6 +108,50 @@ It's advisable that users choose relays that conform to these practices.
Clients SHOULD guide users to keep `kind:10050` lists small (1-3 relays) and SHOULD spread it to as many relays as viable. Clients SHOULD guide users to keep `kind:10050` lists small (1-3 relays) and SHOULD spread it to as many relays as viable.
## Key Aliases
Key Aliases hide the user's main key from the public gift wrap.
Key Alias Events use `kind:10059` replaceable events to privately inform peers of the set of pub keys a user is ALSO subscribing their GiftWrap filters with. The event MUST include a `p` tag for each active public key with an optional relay url to be used with that key. These keys work in addition to the user's main public key. The `relay` url MAY or MAY NOT be included in the user's private inbox relay list (i.e. kind `10050`),
```js
{
"pubkey": "<Author's Main PubKey>",
"kind": 10059,
"created_at": now(),
"tags": [
["p", "<Pubkey Alias 1>", "<preferred relay url for alias 1>"]
["p", "<Pubkey Alias 2>", "<preferred relay url for alias 2>"]
["p", "<Pubkey Alias 3>", "<preferred relay url for alias 3>"]
["expiration", "1600000000"] // optional
]
}
```
`kind:10059` MUST be unsigned, sealed, and gift-wrapped to each receiver individually. They MAY or MAY NOT contain the same aliases for every receiver.
Receiving Clients SHOULD pick one of the keys listed as `p` tags in this event to use as `receiverPublicKey`. Both the wrap and the seal SHOULD be encrypted with this key.
Receiving Clients SHOULD expect a rotation of these aliases and MUST not store past versions of this event.
In order to decrypt incoming wraps, Sending Clients SHOULD store the private key for all pubkey aliases in an encrypted kind `10058` event.
```js
{
"kind": 10058,
"tags": [],
"content": nip44Encrypt(JSON.stringify([
["p", "<Pubkey Alias 1>", "<preferred relay url for alias 1>", "<Alias 1 private key in kex>"]
["p", "<Pubkey Alias 2>", "<preferred relay url for alias 2>", "<Alias 2 private key in kex>"]
["p", "<Pubkey Alias 3>", "<preferred relay url for alias 3>", "<Alias 3 private key in kex>"]
["p", "<Pubkey Alias 4>", "<preferred relay url for alias 4>", "<Alias 4 private key in kex>"]
["p", "<Pubkey Alias 5>", "<preferred relay url for alias 5>", "<Alias 5 private key in kex>"]
]))
}
```
Private tags are JSON Stringified, NIP-44-encrypted to the signer's keys and placed inside the `.content` of the event.
## Benefits & Limitations ## Benefits & Limitations
This NIP offers the following privacy and security features: This NIP offers the following privacy and security features: