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authorFelix Lange <fjl@twurst.com>2016-09-29 22:51:04 +0800
committerFelix Lange <fjl@twurst.com>2016-09-30 04:23:24 +0800
commitba8c4c6b1a3ee6740420ac264df1dbceaba4b555 (patch)
treee37e8f2a44dd498154bac4715e8a9d3ea7d370ec /trie/trie.go
parent4e8cec05abb567457e80185cb9fcf7ec2cc90596 (diff)
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trie: remove dependency on package crypto
Package crypto needs cgo, which is inconvenient for some build configurations.
Diffstat (limited to 'trie/trie.go')
-rw-r--r--trie/trie.go9
1 files changed, 6 insertions, 3 deletions
diff --git a/trie/trie.go b/trie/trie.go
index 93e189e2e..55481f4f7 100644
--- a/trie/trie.go
+++ b/trie/trie.go
@@ -22,7 +22,7 @@ import (
"fmt"
"github.com/ethereum/go-ethereum/common"
- "github.com/ethereum/go-ethereum/crypto"
+ "github.com/ethereum/go-ethereum/crypto/sha3"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/logger/glog"
)
@@ -30,11 +30,14 @@ import (
var (
// This is the known root hash of an empty trie.
emptyRoot = common.HexToHash("56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421")
-
// This is the known hash of an empty state trie entry.
- emptyState = crypto.Keccak256Hash(nil)
+ emptyState common.Hash
)
+func init() {
+ sha3.NewKeccak256().Sum(emptyState[:0])
+}
+
// Database must be implemented by backing stores for the trie.
type Database interface {
DatabaseWriter