smartcontract: add GetMajorityNodeCount()

nspcc-dev · Mar 9, 2021 · 7a17672 · 7a17672
1 parent 717be43
commit 7a17672
Showing 1 changed file with 7 additions and 1 deletion.
diff --git a/pkg/smartcontract/contract.go b/pkg/smartcontract/contract.go
@@ -49,7 +49,7 @@ func CreateDefaultMultiSigRedeemScript(publicKeys keys.PublicKeys) ([]byte, erro
 // using publicKeys length with m set to majority.
 func CreateMajorityMultiSigRedeemScript(publicKeys keys.PublicKeys) ([]byte, error) {
 	n := len(publicKeys)
-	m := n - (n-1)/2
+	m := GetMajorityHonestNodeCount(n)
 	return CreateMultiSigRedeemScript(m, publicKeys)
 }
 
@@ -58,3 +58,9 @@ func CreateMajorityMultiSigRedeemScript(publicKeys keys.PublicKeys) ([]byte, err
 func GetDefaultHonestNodeCount(n int) int {
 	return n - (n-1)/3
 }
+
+// GetMajorityHonestNodeCount returns minimum number of honest nodes
+// required for majority-style agreement.
+func GetMajorityHonestNodeCount(n int) int {
+	return n - (n-1)/2
+}