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| author | Jimmy Hu <jimmy.hu@dexon.org> | 2018-12-20 16:54:11 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-12-20 16:54:11 +0800 |
| commit | 24783a4b3d4a23256e1e16c9f35191c7de4bb7ee (patch) | |
| tree | 75d78bed2b2c5cc69129dec7af2808fdcbe3645f /core/crypto.go | |
| parent | 45609b1dbfba5d7083826e27f2c5862fcca24106 (diff) | |
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core: Add VerifyDKGMPKReadySignature (#377)
* core: Add VerifyDKGMPKReadySignature
* Fix typo
Diffstat (limited to 'core/crypto.go')
| -rw-r--r-- | core/crypto.go | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/core/crypto.go b/core/crypto.go index 96ea54f..d4a7f0e 100644 --- a/core/crypto.go +++ b/core/crypto.go @@ -252,6 +252,21 @@ func hashDKGMPKReady(ready *typesDKG.MPKReady) common.Hash { binaryRound, ) } + +// VerifyDKGMPKReadySignature verifies DKGMPKReady signature. +func VerifyDKGMPKReadySignature( + ready *typesDKG.MPKReady) (bool, error) { + hash := hashDKGMPKReady(ready) + pubKey, err := crypto.SigToPub(hash, ready.Signature) + if err != nil { + return false, err + } + if ready.ProposerID != types.NewNodeID(pubKey) { + return false, nil + } + return true, nil +} + func hashDKGFinalize(final *typesDKG.Finalize) common.Hash { binaryRound := make([]byte, 8) binary.LittleEndian.PutUint64(binaryRound, final.Round) |