stack_epic_core 3.6.0

Chain implementation for epic, a simple, private and scalable cryptocurrency implementation based on the MimbleWimble chain format.
Documentation 
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// extern crate randomx;

use std::marker::PhantomData;

//use crate::core::block::BlockHeader;
use crate::pow::common::EdgeType;
use crate::pow::error::{Error};
use crate::pow::{PoWContext, Proof};
// use crate::util::RwLock;

// use keccak_hash::keccak_256;
use std::unimplemented;


// use progpow::hardware::cpu::PpCPU;
// use progpow::types::PpCompute;

//use bigint::uint::U256;

lazy_static! {
	// pub static ref PP_CPU: RwLock<PpCPU> = RwLock::new(PpCPU::new());
}

pub fn new_progpow_ctx<T>() -> Result<Box<dyn PoWContext<T>>, Error>
where
	T: EdgeType + 'static,
{
	Ok(Box::new(ProgPowContext {
		nonce: 0,
		height: 0,
		header: vec![],
		phantom: PhantomData,
	}))
}

// fn transform_header(header: &[u8]) -> [u8; 32] {
// 	// slice header
// 	let sheader = &header[0..(header.len() - 8)];
//
// 	// copy header
// 	let cheader = sheader.to_vec();
//
// 	let mut header = [0u8; 32];
// 	keccak_256(&cheader, &mut header);
//
// 	header
// }

pub fn get_progpow_value(_header: &[u8], _height: u64, _nonce: u64) -> [u8; 32] {
	// let (value, _) = {
	// 	let progpow = PP_CPU.read();
	// 	progpow
	// 		.verify(&transform_header(&header), height, nonce)
	// 		.unwrap()
	// };
	//
	// let digest: [u8; 32] = unsafe { ::std::mem::transmute(value) };
	//
	// digest
	unimplemented!()
}

pub struct ProgPowContext<T>
where
	T: EdgeType,
{
	pub header: Vec<u8>,
	pub nonce: u64,
	pub height: u64,
	phantom: PhantomData<T>,
}

impl<T> PoWContext<T> for ProgPowContext<T>
where
	T: EdgeType,
{
	fn set_header_nonce(
		&mut self,
		header: Vec<u8>,
		nonce: Option<u64>,
		height: Option<u64>,
		_solve: bool,
	) -> Result<(), Error> {
		self.header = header;
		self.nonce = nonce.unwrap_or(0);
		self.height = height.unwrap_or(0);
		Ok(())
	}

	fn pow_solve(&mut self) -> Result<Vec<Proof>, Error> {
		// let (_, m) = {
		// 	let progpow = PP_CPU.read();
		// 	progpow
		// 		.verify(&transform_header(&self.header), self.height, self.nonce)
		// 		.unwrap()
		// };
		//
		// let mix: [u8; 32] = unsafe { ::std::mem::transmute(m) };
		//
		// Ok(vec![Proof::ProgPowProof { mix }])
		unimplemented!()
	}

	fn verify(&mut self, _proof: &Proof) -> Result<(), Error> {
		// let (_, tm) = {
		// 	let progpow = PP_CPU.read();
		// 	progpow
		// 		.verify(&transform_header(&self.header), self.height, self.nonce)
		// 		.unwrap()
		// };
		//
		// if let Proof::ProgPowProof { ref mix } = proof {
		// 	let mix_test: [u32; 8] = unsafe { ::std::mem::transmute(*mix) };
		// 	if mix_test == tm {
		// 		return Ok(());
		// 	}
		// }
		//
		// Err(ErrorKind::Verification("Hash progpow invalid!".to_string()))?
		unimplemented!()
	}
}