func validateDBSignature(aBlock *common.AdminBlock, dchain *common.DChain) bool {
dbSigEntry := aBlock.GetDBSignature()
if dbSigEntry == nil {
if aBlock.Header.DBHeight == 0 {
return true
} else {
return false
}
} else {
dbSig := dbSigEntry.(*common.DBSignatureEntry)
if serverPubKey.String() != dbSig.PubKey.String() {
return false
} else {
// obtain the previous directory block
dblk := dchain.Blocks[aBlock.Header.DBHeight-1]
if dblk == nil {
return false
} else {
// validatet the signature
bHeader, _ := dblk.Header.MarshalBinary()
if !serverPubKey.Verify(bHeader, (*[64]byte)(dbSig.PrevDBSig)) {
procLog.Infof("No valid signature found in Admin Block = %s\n", spew.Sdump(aBlock))
return false
}
}
}
}
return true
}
