Metadata-Version: 2.1
Name: nostr
Version: 0.0.2
Summary: A Python library for making Nostr clients
Author-email: Jeff Thibault <jdthibault2@gmail.com>
License: MIT License
        
        Copyright (c) 2022 Jeff Thibault
        
        Permission is hereby granted, free of charge, to any person obtaining a copy
        of this software and associated documentation files (the "Software"), to deal
        in the Software without restriction, including without limitation the rights
        to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
        copies of the Software, and to permit persons to whom the Software is
        furnished to do so, subject to the following conditions:
        
        The above copyright notice and this permission notice shall be included in all
        copies or substantial portions of the Software.
        
        THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
        IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
        FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
        AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
        LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
        OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
        SOFTWARE.
        
Project-URL: Homepage, https://github.com/jeffthibault/python-nostr
Classifier: Operating System :: POSIX :: Linux
Classifier: Operating System :: Microsoft :: Windows
Classifier: Operating System :: MacOS :: MacOS X
Requires-Python: >3.6.0
Description-Content-Type: text/markdown
Provides-Extra: test
License-File: LICENSE

# python-nostr
A Python library for making [Nostr](https://github.com/nostr-protocol/nostr) clients

## Usage
**Generate a key**
```python
from nostr.key import PrivateKey

private_key = PrivateKey()
public_key = private_key.public_key
print(f"Private key: {private_key.bech32()}")
print(f"Public key: {public_key.bech32()}")
```
**Connect to relays**
```python
import json
import ssl
import time
from nostr.relay_manager import RelayManager

relay_manager = RelayManager()
relay_manager.add_relay("wss://nostr-pub.wellorder.net")
relay_manager.add_relay("wss://relay.damus.io")
relay_manager.open_connections({"cert_reqs": ssl.CERT_NONE}) # NOTE: This disables ssl certificate verification
time.sleep(1.25) # allow the connections to open

while relay_manager.message_pool.has_notices():
  notice_msg = relay_manager.message_pool.get_notice()
  print(notice_msg.content)
  
relay_manager.close_connections()
```
**Publish to relays**
```python
import json 
import ssl
import time
from nostr.event import Event
from nostr.relay_manager import RelayManager
from nostr.message_type import ClientMessageType
from nostr.key import PrivateKey

relay_manager = RelayManager()
relay_manager.add_relay("wss://nostr-pub.wellorder.net")
relay_manager.add_relay("wss://relay.damus.io")
relay_manager.open_connections({"cert_reqs": ssl.CERT_NONE}) # NOTE: This disables ssl certificate verification
time.sleep(1.25) # allow the connections to open

private_key = PrivateKey()

event = Event(private_key.public_key.hex(), "Hello Nostr")
private_key.sign_event(event)

relay_manager.publish_event(event)
time.sleep(1) # allow the messages to send

relay_manager.close_connections()
```
**Receive events from relays**
```python
import json
import ssl
import time
from nostr.filter import Filter, Filters
from nostr.event import Event, EventKind
from nostr.relay_manager import RelayManager
from nostr.message_type import ClientMessageType

filters = Filters([Filter(authors=[<a nostr pubkey in hex>], kinds=[EventKind.TEXT_NOTE])])
subscription_id = <a string to identify a subscription>
request = [ClientMessageType.REQUEST, subscription_id]
request.extend(filters.to_json_array())

relay_manager = RelayManager()
relay_manager.add_relay("wss://nostr-pub.wellorder.net")
relay_manager.add_relay("wss://relay.damus.io")
relay_manager.add_subscription(subscription_id, filters)
relay_manager.open_connections({"cert_reqs": ssl.CERT_NONE}) # NOTE: This disables ssl certificate verification
time.sleep(1.25) # allow the connections to open

message = json.dumps(request)
relay_manager.publish_message(message)
time.sleep(1) # allow the messages to send

while relay_manager.message_pool.has_events():
  event_msg = relay_manager.message_pool.get_event()
  print(event_msg.event.content)
  
relay_manager.close_connections()
```

**NIP-26 delegation**
```python
from nostr.delegation import Delegation
from nostr.event import EventKind, Event
from nostr.key import PrivateKey

# Load your "identity" PK that you'd like to keep safely offline
identity_pk = PrivateKey.from_nsec("nsec1...")

# Create a new, disposable PK as the "delegatee" that can be "hot" in a Nostr client
delegatee_pk = PrivateKey()

# the "identity" PK will authorize "delegatee" to sign TEXT_NOTEs on its behalf for the next month
delegation = Delegation(
    delegator_pubkey=identity_pk.public_key.hex(),
    delegatee_pubkey=delegatee_pk.public_key.hex(),
    event_kind=EventKind.TEXT_NOTE,
    duration_secs=30*24*60*60
)

identity_pk.sign_delegation(delegation)

event = Event(
    delegatee_pk.public_key.hex(),
    "Hello, NIP-26!",
    tags=[delegation.get_tag()],
)
delegatee_pk.sign_event(event)

# ...normal broadcast steps...
```

The resulting delegation tag can be stored as plaintext and reused as-is by the "delegatee" PK until the delegation token expires. There is no way to revoke a signed delegation, so current best practice is to keep the expiration time relatively short.

Hopefully clients will include an optional field to store the delegation tag. That would allow the "delegatee" PK to seamlessly post messages on the "identity" key's behalf, while the "identity" key stays safely offline in cold storage.


## Installation
```bash
pip install nostr
```

Note: I wrote this with Python 3.9.5.

## Test Suite
See the [Test Suite README](test/README.md)

## Disclaimer
- This library is in very early development.
- It might have some bugs.
- I need to add more tests.

Please feel free to add issues, add PRs, or provide any feedback!
