nostr 0.45.3

Rust implementation of the Nostr protocol.
Documentation 
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// Copyright (c) 2022-2023 Yuki Kishimoto
// Copyright (c) 2023-2025 Rust Nostr Developers
// Distributed under the MIT software license

use alloc::boxed::Box;
use alloc::string::String;
use core::any::Any;
use core::fmt::Debug;
use core::future::Future;
use core::pin::Pin;

use crate::key::PublicKey;

/// Synchronous NIP-04
pub trait Nip04: Any + Debug + Send + Sync {
    /// NIP-04 error
    type Error: core::error::Error;

    /// Encrypts synchronously using NIP-04.
    ///
    /// **NIP-04 is considered deprecated and unsecure!**
    fn nip04_encrypt(&self, public_key: &PublicKey, content: &str) -> Result<String, Self::Error>;

    /// Decrypts synchronously a NIP-04 payload.
    fn nip04_decrypt(
        &self,
        public_key: &PublicKey,
        encrypted_content: &str,
    ) -> Result<String, Self::Error>;
}

/// Asynchronous NIP-04
pub trait AsyncNip04: Any + Debug + Send + Sync {
    /// NIP-04 error
    type Error: core::error::Error;

    /// Encrypts asynchronously using NIP-04.
    ///
    /// **NIP-04 is considered deprecated and unsecure!**
    fn nip04_encrypt_async<'a>(
        &'a self,
        public_key: &'a PublicKey,
        content: &'a str,
    ) -> Pin<Box<dyn Future<Output = Result<String, Self::Error>> + Send + 'a>>;

    /// Decrypts asynchronously a NIP-04 payload.
    fn nip04_decrypt_async<'a>(
        &'a self,
        public_key: &'a PublicKey,
        encrypted_content: &'a str,
    ) -> Pin<Box<dyn Future<Output = Result<String, Self::Error>> + Send + 'a>>;
}