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path: root/whisper/whisperv2/envelope.go
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Diffstat (limited to 'whisper/whisperv2/envelope.go')
-rw-r--r--whisper/whisperv2/envelope.go5
1 files changed, 4 insertions, 1 deletions
diff --git a/whisper/whisperv2/envelope.go b/whisper/whisperv2/envelope.go
index 7110ab457..9f1c68204 100644
--- a/whisper/whisperv2/envelope.go
+++ b/whisper/whisperv2/envelope.go
@@ -23,9 +23,11 @@ import (
"crypto/ecdsa"
"encoding/binary"
"fmt"
+ "math/big"
"time"
"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/ecies"
"github.com/ethereum/go-ethereum/rlp"
@@ -66,7 +68,8 @@ func (self *Envelope) Seal(pow time.Duration) {
for i := 0; i < 1024; i++ {
binary.BigEndian.PutUint32(d[60:], nonce)
- firstBit := common.FirstBitSet(common.BigD(crypto.Keccak256(d)))
+ d := new(big.Int).SetBytes(crypto.Keccak256(d))
+ firstBit := math.FirstBitSet(d)
if firstBit > bestBit {
self.Nonce, bestBit = nonce, firstBit
}