# ged25519
[](https://hex.pm/packages/ged25519)
[](https://hexdocs.pm/ged25519/)
Ed25519 signature functions - Gleam bindings for the Elixir [`ed25519`](https://hex.pm/packages/ed25519) package.
```sh
gleam add ged25519@1
```
```gleam
import ged25519
pub fn main() -> Nil {
// Generate a keypair
let #(secret_key, public_key) = ged25519.generate_key_pair()
// Derive a public key from a secret key
let derived_public_key = ged25519.derive_public_key(secret_key)
assert derived_public_key == public_key
// Create a signature over a message
let message = bit_array.from_string("Gleam rocks!")
let signature = ged25519.signature(message, secret_key, public_key)
// Verify a signature
assert ged25519.valid_signature(signature, message, public_key) == True
}
```
Further documentation can be found at <https://hexdocs.pm/ged25519>.
## Development
```sh
gleam test # Run the tests
```