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NIP-51: add "encrypted" tag

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Alex Gleason 2024-05-26 12:10:42 -05:00
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51.md
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@ -8,7 +8,7 @@ Lists
This NIP defines lists of things that users can create. Lists can contain references to anything, and these references can be **public** or **private**. This NIP defines lists of things that users can create. Lists can contain references to anything, and these references can be **public** or **private**.
Public items in a list are specified in the event `tags` array, while private items are specified in a JSON array that mimics the structure of the event `tags` array, but stringified and encrypted using the same scheme from [NIP-04](04.md) (the shared key is computed using the author's public and private key) and stored in the `.content`. Public items in a list are specified in the event `tags` array, while private items are specified in a JSON array that mimics the structure of the event `tags` array, but stringified and encrypted (see the "Encryption" section below) and stored in the `.content`.
When new items are added to an existing list, clients SHOULD append them to the end of the list, so they are stored in chronological order. When new items are added to an existing list, clients SHOULD append them to the end of the list, so they are stored in chronological order.
@ -131,7 +131,18 @@ Some clients have used these lists in the past, but they should work on transiti
} }
``` ```
## Encryption process pseudocode ## Encryption
If the event content is non-empty, the list content is an encrypted JSON tag array. The data is encrypted using the author's public and private keys.
An optional `["encrypted", <encryption>]` tag may be included, where encryption is one of:
- `nip04` - NIP-04 encryption
- `nip44` - NIP-44 encryption
If the tag is not included, the encryption method is assumed to be NIP-04 for backwards-compatibility.
### Pseudocode
```scala ```scala
val private_items = [ val private_items = [