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# nostr
A zero-dependency Go library for the [Nostr protocol](https://github.com/nostr-protocol/nostr).
```bash
go get code.northwest.io/nostr
```
## Why This Library?
You probably shouldn't use it.
This library rolls its own secp256k1 cryptography in pure Go. No CGO, no external dependencies, no nothing. I built it to see if it was possible to implement Nostr with truly zero dependencies. It is. But that doesn't mean it's a good idea.
**What you get:**
- Zero external dependencies
- Fully auditable pure-Go crypto
- Passes all BIP-340 test vectors
- Works fine for normal Nostr usage
**What you're giving up:**
- Constant-time operations (timing attacks are theoretically possible)
- Performance (~10x slower than btcec)
- Battle-tested crypto code
If you're building something serious, use a library backed by btcec. If you're hacking on a side project or just want to read the code, welcome.
## What's Included
- **Keys** — Generate, parse, sign, verify (hex and bech32/npub/nsec)
- **Events** — Create, serialize, sign NIP-01 events
- **Filters** — Build and match subscription filters
- **Relay** — WebSocket pub/sub (stdlib only)
- **Tags** — Parse and build event tags
- **Envelopes** — Protocol message parsing
## Usage
```go
package main
import (
"context"
"fmt"
"code.northwest.io/nostr"
)
func main() {
// Generate a key pair
key, _ := nostr.GenerateKey()
fmt.Println("npub:", key.Npub())
// Create and sign an event
event := &nostr.Event{
Kind: nostr.KindTextNote,
Content: "Hello Nostr!",
}
key.Sign(event)
// Connect and publish
ctx := context.Background()
relay, _ := nostr.Connect(ctx, "wss://relay.damus.io")
defer relay.Close()
relay.Publish(ctx, event)
}
```
## Examples
See [examples/basic](examples/basic) for a runnable example.
## License
MIT
|
