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table.go
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table.go
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// Copyright 2014-2015 The Dename Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
package verifier
import (
"encoding/binary"
"github.com/yahoo/coname/vrf"
)
var (
tableVerifierLogPrefix byte = 'v' // index uint64 -> proto.VerifierStep
tableRatificationsPrefix byte = 'r' // epoch uint64, ratifier uint64 -> proto.SignedRatification
tableMerkleTreePrefix byte = 't'
tableEntriesPrefix byte = 'e' // vrfidx [vrf.Size]byte -> epoch uint64 -> proto.Entry
tableVerifierState = []byte{'a'} // proto.VeriferState
)
func tableRatifications(epoch, ratifier uint64) []byte {
ret := make([]byte, 1+8+8)
ret[0] = tableRatificationsPrefix
binary.BigEndian.PutUint64(ret[1:1+8], epoch)
binary.BigEndian.PutUint64(ret[1+8:1+8+8], ratifier)
return ret
}
func tableVerifierLog(index uint64) []byte {
ret := make([]byte, 1+8)
ret[0] = tableVerifierLogPrefix
binary.BigEndian.PutUint64(ret[1:1+8], index)
return ret
}
func tableEntries(vrfidx []byte, epoch uint64) []byte {
ret := make([]byte, 1+vrf.Size+8)
ret[0] = tableEntriesPrefix
copy(ret[1:1+vrf.Size], vrfidx)
binary.BigEndian.PutUint64(ret[1+vrf.Size:1+vrf.Size+8], epoch)
return ret
}