roysc/plugeth
1
0
Fork 0
forked from cerc-io/plugeth
Code Pull Requests Activity

all: unify big.Int zero checks, use common/math in more places (#3716)

Browse Source 
* common/math: optimize PaddedBigBytes, use it more

name              old time/op    new time/op    delta
PaddedBigBytes-8    71.1ns ± 5%    46.1ns ± 1%  -35.15%  (p=0.000 n=20+19)

name              old alloc/op   new alloc/op   delta
PaddedBigBytes-8     48.0B ± 0%     32.0B ± 0%  -33.33%  (p=0.000 n=20+20)

* all: unify big.Int zero checks

Various checks were in use. This commit replaces them all with Int.Sign,
which is cheaper and less code.

eg templates:

    func before(x *big.Int) bool { return x.BitLen() == 0 }
    func after(x *big.Int) bool  { return x.Sign() == 0 }

    func before(x *big.Int) bool { return x.BitLen() > 0 }
    func after(x *big.Int) bool  { return x.Sign() != 0 }

    func before(x *big.Int) int { return x.Cmp(common.Big0) }
    func after(x *big.Int) int  { return x.Sign() }

* common/math, crypto/secp256k1: make ReadBits public in package math
This commit is contained in:
Felix Lange 2017-02-28 15:09:11 +01:00 committed by Jeffrey Wilcke
parent d4f60d362b
commit 5f7826270c
30 changed files with 104 additions and 114 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
accounts/abi/bind/backends/simulated.go
View File

@ -237,7 +237,7 @@ func (b *SimulatedBackend) callContract(ctx context.Context, call ethereum.CallM
if call.GasPrice == nil {
call.GasPrice = big.NewInt(1)
}
if call.Gas == nil || call.Gas.BitLen() == 0 {
if call.Gas == nil || call.Gas.Sign() == 0 {
call.Gas = big.NewInt(50000000)
}
if call.Value == nil {

2
accounts/abi/numbers.go
View File

@ -59,7 +59,7 @@ var (
// U256 converts a big Int into a 256bit EVM number.
func U256(n *big.Int) []byte {
return common.LeftPadBytes(math.U256(n).Bytes(), 32)
return math.PaddedBigBytes(math.U256(n), 32)
}
// packNum packs the given number (using the reflect value) and will cast it to appropriate number representation

5
accounts/abi/packing.go
View File

@ -20,6 +20,7 @@ import (
"reflect"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/math"
)
// packBytesSlice packs the given bytes as [L, V] as the canonical representation
@ -45,9 +46,9 @@ func packElement(t Type, reflectValue reflect.Value) []byte {
return common.LeftPadBytes(reflectValue.Bytes(), 32)
case BoolTy:
if reflectValue.Bool() {
return common.LeftPadBytes(common.Big1.Bytes(), 32)
return math.PaddedBigBytes(common.Big1, 32)
} else {
return common.LeftPadBytes(common.Big0.Bytes(), 32)
return math.PaddedBigBytes(common.Big0, 32)
}
case BytesTy:
if reflectValue.Kind() == reflect.Array {

4
accounts/keystore/keystore_passphrase.go
View File

@ -36,6 +36,7 @@ import (
"path/filepath"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/math"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/crypto/randentropy"
"github.com/pborman/uuid"
@ -115,8 +116,7 @@ func EncryptKey(key *Key, auth string, scryptN, scryptP int) ([]byte, error) {
return nil, err
}
encryptKey := derivedKey[:16]
keyBytes0 := crypto.FromECDSA(key.PrivateKey)
keyBytes := common.LeftPadBytes(keyBytes0, 32)
keyBytes := math.PaddedBigBytes(key.PrivateKey.D, 32)
iv := randentropy.GetEntropyCSPRNG(aes.BlockSize) // 16
cipherText, err := aesCTRXOR(encryptKey, keyBytes, iv)

2
accounts/usbwallet/ledger_wallet.go
View File

@ -416,7 +416,7 @@ func (w *ledgerWallet) selfDerive() {
break
}
// If the next account is empty, stop self-derivation, but add it nonetheless
if balance.BitLen() == 0 && nonce == 0 {
if balance.Sign() == 0 && nonce == 0 {
empty = true
}
// We've just self-derived a new account, start tracking it locally

33
common/math/big.go
View File

@ -28,6 +28,13 @@ var (
MaxBig256 = new(big.Int).Set(tt256m1)
)
const (
// number of bits in a big.Word
wordBits = 32 << (uint64(^big.Word(0)) >> 63)
// number of bytes in a big.Word
wordBytes = wordBits / 8
)
// ParseBig256 parses s as a 256 bit integer in decimal or hexadecimal syntax.
// Leading zeros are accepted. The empty string parses as zero.
func ParseBig256(s string) (*big.Int, bool) {
@ -91,12 +98,25 @@ func FirstBitSet(v *big.Int) int {
// PaddedBigBytes encodes a big integer as a big-endian byte slice. The length
// of the slice is at least n bytes.
func PaddedBigBytes(bigint *big.Int, n int) []byte {
bytes := bigint.Bytes()
if len(bytes) >= n {
return bytes
if bigint.BitLen()/8 >= n {
return bigint.Bytes()
}
ret := make([]byte, n)
return append(ret[:len(ret)-len(bytes)], bytes...)
ReadBits(bigint, ret)
return ret
}
// ReadBits encodes the absolute value of bigint as big-endian bytes. Callers must ensure
// that buf has enough space. If buf is too short the result will be incomplete.
func ReadBits(bigint *big.Int, buf []byte) {
i := len(buf)
for _, d := range bigint.Bits() {
for j := 0; j < wordBytes && i > 0; j++ {
i--
buf[i] = byte(d)
d >>= 8
}
}
}
// U256 encodes as a 256 bit two's complement number. This operation is destructive.
@ -119,9 +139,6 @@ func S256(x *big.Int) *big.Int {
}
}
// wordSize is the size number of bits in a big.Word.
const wordSize = 32 << (uint64(^big.Word(0)) >> 63)
// Exp implements exponentiation by squaring.
// Exp returns a newly-allocated big integer and does not change
// base or exponent. The result is truncated to 256 bits.
@ -131,7 +148,7 @@ func Exp(base, exponent *big.Int) *big.Int {
result := big.NewInt(1)
for _, word := range exponent.Bits() {
for i := 0; i < wordSize; i++ {
for i := 0; i < wordBits; i++ {
if word&1 == 1 {
U256(result.Mul(result, base))
}

23
common/math/big_test.go
View File

@ -18,6 +18,7 @@ package math
import (
"bytes"
"encoding/hex"
"math/big"
"testing"
)
@ -131,6 +132,28 @@ func TestPaddedBigBytes(t *testing.T) {
}
}
func BenchmarkPaddedBigBytes(b *testing.B) {
bigint := MustParseBig256("123456789123456789123456789123456789")
for i := 0; i < b.N; i++ {
PaddedBigBytes(bigint, 32)
}
}
func TestReadBits(t *testing.T) {
check := func(input string) {
want, _ := hex.DecodeString(input)
int, _ := new(big.Int).SetString(input, 16)
buf := make([]byte, len(want))
ReadBits(int, buf)
if !bytes.Equal(buf, want) {
t.Errorf("have: %x\nwant: %x", buf, want)
}
}
check("000000000000000000000000000000000000000000000000000000FEFCF3F8F0")
check("0000000000012345000000000000000000000000000000000000FEFCF3F8F0")
check("18F8F8F1000111000110011100222004330052300000000000000000FEFCF3F8F0")
}
func TestU256(t *testing.T) {
tests := []struct{ x, y *big.Int }{
{x: big.NewInt(0), y: big.NewInt(0)},

6
contracts/chequebook/cheque.go
View File

@ -247,7 +247,7 @@ func (self *Chequebook) Issue(beneficiary common.Address, amount *big.Int) (ch *
defer self.lock.Unlock()
self.lock.Lock()
if amount.Cmp(common.Big0) <= 0 {
if amount.Sign() <= 0 {
return nil, fmt.Errorf("amount must be greater than zero (%v)", amount)
}
if self.balance.Cmp(amount) < 0 {
@ -515,7 +515,7 @@ func (self *Inbox) autoCash(cashInterval time.Duration) {
self.quit = nil
}
// if maxUncashed is set to 0, then autocash on receipt
if cashInterval == time.Duration(0) || self.maxUncashed != nil && self.maxUncashed.Cmp(common.Big0) == 0 {
if cashInterval == time.Duration(0) || self.maxUncashed != nil && self.maxUncashed.Sign() == 0 {
return
}
@ -597,7 +597,7 @@ func (self *Cheque) Verify(signerKey *ecdsa.PublicKey, contract, beneficiary com
amount := new(big.Int).Set(self.Amount)
if sum != nil {
amount.Sub(amount, sum)
if amount.Cmp(common.Big0) <= 0 {
if amount.Sign() <= 0 {
return nil, fmt.Errorf("incorrect amount: %v <= 0", amount)
}
}

2
contracts/chequebook/cheque_test.go
View File

@ -88,7 +88,7 @@ func TestIssueAndReceive(t *testing.T) {
t.Fatalf("expected no error, got %v", err)
}
if chbook.Balance().Cmp(common.Big0) != 0 {
if chbook.Balance().Sign() != 0 {
t.Errorf("expected: %v, got %v", "0", chbook.Balance())
}

2
core/headerchain.go
View File

@ -359,7 +359,7 @@ func (hc *HeaderChain) GetBlockHashesFromHash(hash common.Hash, max uint64) []co
break
}
chain = append(chain, next)
if header.Number.Cmp(common.Big0) == 0 {
if header.Number.Sign() == 0 {
break
}
}

6
core/state/state_object.go
View File

@ -93,7 +93,7 @@ type stateObject struct {
// empty returns whether the account is considered empty.
func (s *stateObject) empty() bool {
return s.data.Nonce == 0 && s.data.Balance.BitLen() == 0 && bytes.Equal(s.data.CodeHash, emptyCodeHash)
return s.data.Nonce == 0 && s.data.Balance.Sign() == 0 && bytes.Equal(s.data.CodeHash, emptyCodeHash)
}
// Account is the Ethereum consensus representation of accounts.
@ -243,7 +243,7 @@ func (self *stateObject) CommitTrie(db trie.Database, dbw trie.DatabaseWriter) e
func (c *stateObject) AddBalance(amount *big.Int) {
// EIP158: We must check emptiness for the objects such that the account
// clearing (0,0,0 objects) can take effect.
if amount.Cmp(common.Big0) == 0 {
if amount.Sign() == 0 {
if c.empty() {
c.touch()
}
@ -260,7 +260,7 @@ func (c *stateObject) AddBalance(amount *big.Int) {
// SubBalance removes amount from c's balance.
// It is used to remove funds from the origin account of a transfer.
func (c *stateObject) SubBalance(amount *big.Int) {
if amount.Cmp(common.Big0) == 0 {
if amount.Sign() == 0 {
return
}
c.SetBalance(new(big.Int).Sub(c.Balance(), amount))

2
core/tx_pool.go
View File

@ -299,7 +299,7 @@ func (pool *TxPool) validateTx(tx *types.Transaction) error {
// Transactions can't be negative. This may never happen
// using RLP decoded transactions but may occur if you create
// a transaction using the RPC for example.
if tx.Value().Cmp(common.Big0) < 0 {
if tx.Value().Sign() < 0 {
return ErrNegativeValue
}

2
core/types/transaction.go
View File

@ -42,7 +42,7 @@ var (
// deriveSigner makes a *best* guess about which signer to use.
func deriveSigner(V *big.Int) Signer {
if V.BitLen() > 0 && isProtectedV(V) {
if V.Sign() != 0 && isProtectedV(V) {
return EIP155Signer{chainId: deriveChainId(V)}
} else {
return HomesteadSigner{}

2
core/types/transaction_signing.go
View File

@ -167,7 +167,7 @@ func (s EIP155Signer) WithSignature(tx *Transaction, sig []byte) (*Transaction,
cpy.data.R = new(big.Int).SetBytes(sig[:32])
cpy.data.S = new(big.Int).SetBytes(sig[32:64])
cpy.data.V = new(big.Int).SetBytes([]byte{sig[64]})
if s.chainId.BitLen() > 0 {
if s.chainId.Sign() != 0 {
cpy.data.V = big.NewInt(int64(sig[64] + 35))
cpy.data.V.Add(cpy.data.V, s.chainIdMul)
}

2
core/types/transaction_signing_test.go
View File

@ -71,7 +71,7 @@ func TestEIP155ChainId(t *testing.T) {
t.Error("didn't expect tx to be protected")
}
if tx.ChainId().BitLen() > 0 {
if tx.ChainId().Sign() != 0 {
t.Error("expected chain id to be 0 got", tx.ChainId())
}
}

2
core/vm/common.go
View File

@ -25,7 +25,7 @@ import (
// calculates the memory size required for a step
func calcMemSize(off, l *big.Int) *big.Int {
if l.Cmp(common.Big0) == 0 {
if l.Sign() == 0 {
return common.Big0
}

2
core/vm/evm.go
View File

@ -120,7 +120,7 @@ func (evm *EVM) Call(caller ContractRef, addr common.Address, input []byte, gas
snapshot = evm.StateDB.Snapshot()
)
if !evm.StateDB.Exist(addr) {
if PrecompiledContracts[addr] == nil && evm.ChainConfig().IsEIP158(evm.BlockNumber) && value.BitLen() == 0 {
if PrecompiledContracts[addr] == nil && evm.ChainConfig().IsEIP158(evm.BlockNumber) && value.Sign() == 0 {
return nil, gas, nil
}

6
core/vm/gas_table.go
View File

@ -273,7 +273,7 @@ func gasExp(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem
func gasCall(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
var (
gas = gt.Calls
transfersValue = stack.Back(2).BitLen() > 0
transfersValue = stack.Back(2).Sign() != 0
address = common.BigToAddress(stack.Back(1))
eip158 = evm.ChainConfig().IsEIP158(evm.BlockNumber)
)
@ -316,7 +316,7 @@ func gasCall(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem
func gasCallCode(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
gas := gt.Calls
if stack.Back(2).BitLen() > 0 {
if stack.Back(2).Sign() != 0 {
gas += params.CallValueTransferGas
}
memoryGas, err := memoryGasCost(mem, memorySize)
@ -362,7 +362,7 @@ func gasSuicide(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack,
if eip158 {
// if empty and transfers value
if evm.StateDB.Empty(address) && evm.StateDB.GetBalance(contract.Address()).BitLen() > 0 {
if evm.StateDB.Empty(address) && evm.StateDB.GetBalance(contract.Address()).Sign() != 0 {
gas += gt.CreateBySuicide
}
} else if !evm.StateDB.Exist(address) {

23
core/vm/instructions.go
View File

@ -58,7 +58,7 @@ func opMul(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stac
func opDiv(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := stack.pop(), stack.pop()
if y.Cmp(common.Big0) != 0 {
if y.Sign() != 0 {
stack.push(math.U256(x.Div(x, y)))
} else {
stack.push(new(big.Int))
@ -71,12 +71,12 @@ func opDiv(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stac
func opSdiv(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := math.S256(stack.pop()), math.S256(stack.pop())
if y.Cmp(common.Big0) == 0 {
if y.Sign() == 0 {
stack.push(new(big.Int))
return nil, nil
} else {
n := new(big.Int)
if evm.interpreter.intPool.get().Mul(x, y).Cmp(common.Big0) < 0 {
if evm.interpreter.intPool.get().Mul(x, y).Sign() < 0 {
n.SetInt64(-1)
} else {
n.SetInt64(1)
@ -93,7 +93,7 @@ func opSdiv(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Sta
func opMod(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := stack.pop(), stack.pop()
if y.Cmp(common.Big0) == 0 {
if y.Sign() == 0 {
stack.push(new(big.Int))
} else {
stack.push(math.U256(x.Mod(x, y)))
@ -105,11 +105,11 @@ func opMod(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stac
func opSmod(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x, y := math.S256(stack.pop()), math.S256(stack.pop())
if y.Cmp(common.Big0) == 0 {
if y.Sign() == 0 {
stack.push(new(big.Int))
} else {
n := new(big.Int)
if x.Cmp(common.Big0) < 0 {
if x.Sign() < 0 {
n.SetInt64(-1)
} else {
n.SetInt64(1)
@ -221,7 +221,7 @@ func opEq(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack
func opIszero(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
x := stack.pop()
if x.Cmp(common.Big0) > 0 {
if x.Sign() > 0 {
stack.push(new(big.Int))
} else {
stack.push(evm.interpreter.intPool.get().SetUint64(1))
@ -252,10 +252,11 @@ func opXor(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stac
evm.interpreter.intPool.put(y)
return nil, nil
}
func opByte(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
th, val := stack.pop(), stack.pop()
if th.Cmp(big.NewInt(32)) < 0 {
byte := evm.interpreter.intPool.get().SetInt64(int64(common.LeftPadBytes(val.Bytes(), 32)[th.Int64()]))
byte := evm.interpreter.intPool.get().SetInt64(int64(math.PaddedBigBytes(val, 32)[th.Int64()]))
stack.push(byte)
} else {
stack.push(new(big.Int))
@ -505,7 +506,7 @@ func opJump(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Sta
}
func opJumpi(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
pos, cond := stack.pop(), stack.pop()
if cond.BitLen() > 0 {
if cond.Sign() != 0 {
if !contract.jumpdests.has(contract.CodeHash, contract.Code, pos) {
nop := contract.GetOp(pos.Uint64())
return nil, fmt.Errorf("invalid jump destination (%v) %v", nop, pos)
@ -583,7 +584,7 @@ func opCall(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack *Sta
// Get the arguments from the memory
args := memory.Get(inOffset.Int64(), inSize.Int64())
if value.BitLen() > 0 {
if value.Sign() != 0 {
gas += params.CallStipend
}
@ -616,7 +617,7 @@ func opCallCode(pc *uint64, evm *EVM, contract *Contract, memory *Memory, stack
// Get the arguments from the memory
args := memory.Get(inOffset.Int64(), inSize.Int64())
if value.BitLen() > 0 {
if value.Sign() != 0 {
gas += params.CallStipend
}

3
core/vm/logger.go
View File

@ -23,6 +23,7 @@ import (
"unicode"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/math"
)
type Storage map[common.Hash]common.Hash
@ -180,7 +181,7 @@ func StdErrFormat(logs []StructLog) {
fmt.Fprintln(os.Stderr, "STACK =", len(log.Stack))
for i := len(log.Stack) - 1; i >= 0; i-- {
fmt.Fprintf(os.Stderr, "%04d: %x\n", len(log.Stack)-i-1, common.LeftPadBytes(log.Stack[i].Bytes(), 32))
fmt.Fprintf(os.Stderr, "%04d: %x\n", len(log.Stack)-i-1, math.PaddedBigBytes(log.Stack[i], 32))
}
const maxMem = 10

6
crypto/secp256k1/curve.go
View File

@ -36,6 +36,8 @@ import (
"math/big"
"sync"
"unsafe"
"github.com/ethereum/go-ethereum/common/math"
)
/*
@ -230,8 +232,8 @@ func (BitCurve *BitCurve) ScalarMult(Bx, By *big.Int, scalar []byte) (*big.Int,
// Do the multiplication in C, updating point.
point := make([]byte, 64)
readBits(point[:32], Bx)
readBits(point[32:], By)
math.ReadBits(Bx, point[:32])
math.ReadBits(By, point[32:])
pointPtr := (*C.uchar)(unsafe.Pointer(&point[0]))
scalarPtr := (*C.uchar)(unsafe.Pointer(&scalar[0]))
res := C.secp256k1_pubkey_scalar_mul(context, pointPtr, scalarPtr)

39
crypto/secp256k1/curve_test.go
View File

@ -1,39 +0,0 @@
// Copyright 2015 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 secp256k1
import (
"bytes"
"encoding/hex"
"math/big"
"testing"
)
func TestReadBits(t *testing.T) {
check := func(input string) {
want, _ := hex.DecodeString(input)
int, _ := new(big.Int).SetString(input, 16)
buf := make([]byte, len(want))
readBits(buf, int)
if !bytes.Equal(buf, want) {
t.Errorf("have: %x\nwant: %x", buf, want)
}
}
check("000000000000000000000000000000000000000000000000000000FEFCF3F8F0")
check("0000000000012345000000000000000000000000000000000000FEFCF3F8F0")
check("18F8F8F1000111000110011100222004330052300000000000000000FEFCF3F8F0")
}

14
crypto/secp256k1/secp256.go
View File

@ -38,7 +38,6 @@ import "C"
import (
"errors"
"math/big"
"unsafe"
)
@ -129,16 +128,3 @@ func checkSignature(sig []byte) error {
}
return nil
}
// reads num into buf as big-endian bytes.
func readBits(buf []byte, num *big.Int) {
const wordLen = int(unsafe.Sizeof(big.Word(0)))
i := len(buf)
for _, d := range num.Bits() {
for j := 0; j < wordLen && i > 0; j++ {
i--
buf[i] = byte(d)
d >>= 8
}
}
}

5
crypto/secp256k1/secp256_test.go
View File

@ -24,6 +24,7 @@ import (
"encoding/hex"
"testing"
"github.com/ethereum/go-ethereum/common/math"
"github.com/ethereum/go-ethereum/crypto/randentropy"
)
@ -35,9 +36,7 @@ func generateKeyPair() (pubkey, privkey []byte) {
panic(err)
}
pubkey = elliptic.Marshal(S256(), key.X, key.Y)
privkey = make([]byte, 32)
readBits(privkey, key.D)
return pubkey, privkey
return pubkey, math.PaddedBigBytes(key.D, 32)
}
func randSig() []byte {

4
crypto/signature_cgo.go
View File

@ -23,7 +23,7 @@ import (
"crypto/elliptic"
"fmt"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/math"
"github.com/ethereum/go-ethereum/crypto/secp256k1"
)
@ -53,7 +53,7 @@ func Sign(hash []byte, prv *ecdsa.PrivateKey) (sig []byte, err error) {
if len(hash) != 32 {
return nil, fmt.Errorf("hash is required to be exactly 32 bytes (%d)", len(hash))
}
seckey := common.LeftPadBytes(prv.D.Bytes(), prv.Params().BitSize/8)
seckey := math.PaddedBigBytes(prv.D, prv.Params().BitSize/8)
defer zeroBytes(seckey)
return secp256k1.Sign(hash, seckey)
}

8
internal/ethapi/api.go
View File

@ -596,10 +596,10 @@ func (s *PublicBlockChainAPI) doCall(ctx context.Context, args CallArgs, blockNr
}
// Set default gas & gas price if none were set
gas, gasPrice := args.Gas.ToInt(), args.GasPrice.ToInt()
if gas.BitLen() == 0 {
if gas.Sign() == 0 {
gas = big.NewInt(50000000)
}
if gasPrice.BitLen() == 0 {
if gasPrice.Sign() == 0 {
gasPrice = new(big.Int).SetUint64(defaultGasPrice)
}
@ -653,7 +653,7 @@ func (s *PublicBlockChainAPI) Call(ctx context.Context, args CallArgs, blockNr r
func (s *PublicBlockChainAPI) EstimateGas(ctx context.Context, args CallArgs) (*hexutil.Big, error) {
// Binary search the gas requirement, as it may be higher than the amount used
var lo, hi uint64
if (*big.Int)(&args.Gas).BitLen() > 0 {
if (*big.Int)(&args.Gas).Sign() != 0 {
hi = (*big.Int)(&args.Gas).Uint64()
} else {
// Retrieve the current pending block to act as the gas ceiling
@ -720,7 +720,7 @@ func FormatLogs(structLogs []vm.StructLog) []StructLogRes {
}
for i, stackValue := range trace.Stack {
formattedStructLogs[index].Stack[i] = fmt.Sprintf("%x", common.LeftPadBytes(stackValue.Bytes(), 32))
formattedStructLogs[index].Stack[i] = fmt.Sprintf("%x", math.PaddedBigBytes(stackValue, 32))
}
for i := 0; i+32 <= len(trace.Memory); i += 32 {

2
light/state_object.go
View File

@ -202,7 +202,7 @@ func (self *StateObject) Copy() *StateObject {
// empty returns whether the account is considered empty.
func (self *StateObject) empty() bool {
return self.nonce == 0 && self.balance.BitLen() == 0 && bytes.Equal(self.codeHash, emptyCodeHash)
return self.nonce == 0 && self.balance.Sign() == 0 && bytes.Equal(self.codeHash, emptyCodeHash)
}
// Balance returns the account balance

2
light/txpool.go
View File

@ -365,7 +365,7 @@ func (pool *TxPool) validateTx(ctx context.Context, tx *types.Transaction) error
// Transactions can't be negative. This may never happen
// using RLP decoded transactions but may occur if you create
// a transaction using the RPC for example.
if tx.Value().Cmp(common.Big0) < 0 {
if tx.Value().Sign() < 0 {
return core.ErrNegativeValue
}

5
swarm/services/swap/swap/swap.go
View File

@ -22,7 +22,6 @@ import (
"sync"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/log"
)
@ -120,11 +119,11 @@ func (self *Swap) SetRemote(remote *Profile) {
self.lock.Lock()
self.remote = remote
if self.Sells && (remote.BuyAt.Cmp(common.Big0) <= 0 || self.local.SellAt.Cmp(common.Big0) <= 0 || remote.BuyAt.Cmp(self.local.SellAt) < 0) {
if self.Sells && (remote.BuyAt.Sign() <= 0 || self.local.SellAt.Sign() <= 0 || remote.BuyAt.Cmp(self.local.SellAt) < 0) {
self.Out.Stop()
self.Sells = false
}
if self.Buys && (remote.SellAt.Cmp(common.Big0) <= 0 || self.local.BuyAt.Cmp(common.Big0) <= 0 || self.local.BuyAt.Cmp(self.remote.SellAt) < 0) {
if self.Buys && (remote.SellAt.Sign() <= 0 || self.local.BuyAt.Sign() <= 0 || self.local.BuyAt.Cmp(self.remote.SellAt) < 0) {
self.In.Stop()
self.Buys = false
}

2
tests/util.go
View File

@ -71,7 +71,7 @@ func checkLogs(tlog []Log, logs []*types.Log) error {
}
}
}
genBloom := common.LeftPadBytes(types.LogsBloom([]*types.Log{logs[i]}).Bytes(), 256)
genBloom := math.PaddedBigBytes(types.LogsBloom([]*types.Log{logs[i]}), 256)
if !bytes.Equal(genBloom, common.Hex2Bytes(log.BloomF)) {
return fmt.Errorf("bloom mismatch")