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smartcontract: implement GetDefaultHonestNodeCount

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We may use this in other parts of code.
This commit is contained in:
Evgenii Stratonikov 2020-10-07 15:58:33 +03:00
parent 037cecf1ac
commit 44abaa8ef3
1 changed files with 7 additions and 1 deletions
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8
pkg/smartcontract/contract.go
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@ -41,7 +41,7 @@ func CreateMultiSigRedeemScript(m int, publicKeys keys.PublicKeys) ([]byte, erro
// using publicKeys length with the default BFT assumptions of (n - (n-1)/3) for m. // using publicKeys length with the default BFT assumptions of (n - (n-1)/3) for m.
func CreateDefaultMultiSigRedeemScript(publicKeys keys.PublicKeys) ([]byte, error) { func CreateDefaultMultiSigRedeemScript(publicKeys keys.PublicKeys) ([]byte, error) {
n := len(publicKeys) n := len(publicKeys)
m := n - (n-1)/3 m := GetDefaultHonestNodeCount(n)
return CreateMultiSigRedeemScript(m, publicKeys) return CreateMultiSigRedeemScript(m, publicKeys)
} }
@ -52,3 +52,9 @@ func CreateMajorityMultiSigRedeemScript(publicKeys keys.PublicKeys) ([]byte, err
m := n - (n-1)/2 m := n - (n-1)/2
return CreateMultiSigRedeemScript(m, publicKeys) return CreateMultiSigRedeemScript(m, publicKeys)
} }
// GetDefaultHonestNodeCount returns minimum number of honest nodes
// required for network of size n.
func GetDefaultHonestNodeCount(n int) int {
return n - (n-1)/3
}