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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.

//! Hash Functions
mod sip;
pub use sip::SipHasher24 as SipHasher;

mod types;
pub use types::{
    H256,
    HashWriter,
    Hashed,
    DefaultHashable
};


/// Blake2b Hash Function
pub fn blake256(data: &[u8]) -> H256 {
    use crate::blake2::{
        State,
        Params
    };

    let mut params = Params::new();
    params.hash_length(32);
    let mut engine = params.to_state();
    engine.update(data);
    let mut result = [0u8; 32];
    let output = engine.finalize();
    result.clone_from_slice(&output.as_bytes());
    H256::from(result)
}