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// Copyright 2019 Stichting Organism
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

//
// Schnorr via ristretto
//

// Modified From the hard work off:
// Authors:
// - Isis Agora Lovecruft <isis@patternsinthevoid.net>
// - Jeff Burdges <jeff@web3.foundation>
// - The Tari Project Authors
// - Cathie Yun <cathieyun@gmail.com> 
// - Tess Rinearson <tess.rinearson@gmail.com> 
// - Oleg Andreev <oleganza@gmail.com>


//Modeled from
//https://github.com/dalek-cryptography/ed25519-dalek/blob/master/src/ed25519.rs

//Useful links:
//https://blockstream.com/2018/01/23/musig-key-aggregation-schnorr-signatures/
//https://github.com/sipa/bips/blob/bip-schnorr/bip-schnorr.mediawiki
//https://medium.com/cryptoadvance/how-schnorr-signatures-may-improve-bitcoin-91655bcb4744


mod errors;
pub use errors::SchnorrError;
mod tools;
pub use tools::SigningContext;

pub mod keys;
pub mod signature;
/// Export everything public in schnorr.
pub use signature::{
    Signature,
    SIGNATURE_LENGTH,
};

/// Key Swap
mod ecdh;
pub use crate::ecdh::{
    diffie_hellman, 
    SharedSecret
};

/// A Multisignature over many different messages
mod multimessage;
pub use multimessage::{
   Multimessage
};
mod multisignature;
pub use multisignature::Multisignature;

pub use crate::keys::*;
mod batch;
pub use batch::{
    BatchVerification, 
    BatchVerifier, 
    SingleVerifier
};

mod context;
pub use context::MuSigContext;

/// A Multisig Participator
pub(crate) mod counterparty;

/// Multisig local signer
mod signer;
pub use signer::{
    Signer, SignerAwaitingCommitments, SignerAwaitingPrecommitments, SignerAwaitingShares,
};


#[cfg(test)]
mod musig_test;

// use rand_core::{RngCore,CryptoRng};

// #[cfg(all(feature = "rand_os", feature = "rand"))] 
// fn rand_hack() -> impl RngCore+CryptoRng {
//     ::rand::thread_rng()
// }

// #[cfg(all(feature = "rand_os", not(feature = "rand")))] 
// fn rand_hack() -> impl RngCore+CryptoRng {
//     ::rand_os::OsRng::new().unwrap()
// }