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-rw-r--r--pow/ezp/pow.go113
1 files changed, 0 insertions, 113 deletions
diff --git a/pow/ezp/pow.go b/pow/ezp/pow.go
deleted file mode 100644
index 0f7ee3570..000000000
--- a/pow/ezp/pow.go
+++ /dev/null
@@ -1,113 +0,0 @@
-// Copyright 2014 The go-ethereum Authors
-// This file is part of the go-ethereum library.
-//
-// The go-ethereum library is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// The go-ethereum library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
-
-package ezp
-
-import (
- "encoding/binary"
- "math/big"
- "math/rand"
- "time"
-
- "github.com/ethereum/go-ethereum/common"
- "github.com/ethereum/go-ethereum/crypto/sha3"
- "github.com/ethereum/go-ethereum/logger"
- "github.com/ethereum/go-ethereum/pow"
-)
-
-var powlogger = logger.NewLogger("POW")
-
-type EasyPow struct {
- hash *big.Int
- HashRate int64
- turbo bool
-}
-
-func New() *EasyPow {
- return &EasyPow{turbo: false}
-}
-
-func (pow *EasyPow) GetHashrate() int64 {
- return pow.HashRate
-}
-
-func (pow *EasyPow) Turbo(on bool) {
- pow.turbo = on
-}
-
-func (pow *EasyPow) Search(block pow.Block, stop <-chan struct{}, index int) (uint64, []byte) {
- r := rand.New(rand.NewSource(time.Now().UnixNano()))
- hash := block.HashNoNonce()
- diff := block.Difficulty()
- //i := int64(0)
- // TODO fix offset
- i := rand.Int63()
- starti := i
- start := time.Now().UnixNano()
-
- defer func() { pow.HashRate = 0 }()
-
- // Make sure stop is empty
-empty:
- for {
- select {
- case <-stop:
- default:
- break empty
- }
- }
-
- for {
- select {
- case <-stop:
- return 0, nil
- default:
- i++
-
- elapsed := time.Now().UnixNano() - start
- hashes := ((float64(1e9) / float64(elapsed)) * float64(i-starti)) / 1000
- pow.HashRate = int64(hashes)
-
- sha := uint64(r.Int63())
- if verify(hash, diff, sha) {
- return sha, nil
- }
- }
-
- if !pow.turbo {
- time.Sleep(20 * time.Microsecond)
- }
- }
-}
-
-func (pow *EasyPow) Verify(block pow.Block) bool {
- return Verify(block)
-}
-
-func verify(hash common.Hash, diff *big.Int, nonce uint64) bool {
- sha := sha3.NewKeccak256()
- n := make([]byte, 8)
- binary.PutUvarint(n, nonce)
- sha.Write(n)
- sha.Write(hash[:])
- verification := new(big.Int).Div(common.BigPow(2, 256), diff)
- res := common.BigD(sha.Sum(nil))
- return res.Cmp(verification) <= 0
-}
-
-func Verify(block pow.Block) bool {
- return verify(block.HashNoNonce(), block.Difficulty(), block.Nonce())
-}