diff options
Diffstat (limited to 'core/utils.go')
| -rw-r--r-- | core/utils.go | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/core/utils.go b/core/utils.go index 7aa99f0..30456ef 100644 --- a/core/utils.go +++ b/core/utils.go @@ -25,6 +25,8 @@ import ( "time" "github.com/dexon-foundation/dexon-consensus-core/common" + "github.com/dexon-foundation/dexon-consensus-core/core/types" + "github.com/dexon-foundation/dexon-consensus-core/crypto" ) var ( @@ -102,3 +104,29 @@ func removeFromSortedUint32Slice(xs []uint32, x uint32) []uint32 { } return append(xs[:indexToRemove], xs[indexToRemove+1:]...) } + +// HashConfigurationBlock returns the hash value of configuration block. +func HashConfigurationBlock( + notarySet map[types.NodeID]struct{}, + config *types.Config, + snapshotHash common.Hash, + prevHash common.Hash, +) common.Hash { + notaryIDs := make(types.NodeIDs, 0, len(notarySet)) + for nID := range notarySet { + notaryIDs = append(notaryIDs, nID) + } + sort.Sort(notaryIDs) + notarySetBytes := make([]byte, 0, len(notarySet)*len(common.Hash{})) + for _, nID := range notaryIDs { + notarySetBytes = append(notarySetBytes, nID.Hash[:]...) + } + configBytes := config.Bytes() + + return crypto.Keccak256Hash( + notarySetBytes[:], + configBytes[:], + snapshotHash[:], + prevHash[:], + ) +} |