1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
// Copyright (C) 2019-2023 Algorand, Inc.
// This file is part of go-algorand
//
// go-algorand is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// go-algorand is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with go-algorand. If not, see <https://www.gnu.org/licenses/>.
package stateproofmsg
import (
"github.com/algorand/go-algorand/crypto"
sp "github.com/algorand/go-algorand/crypto/stateproof"
"github.com/algorand/go-algorand/protocol"
)
// Message represents the message that the state proofs are attesting to. This message can be
// used by lightweight client and gives it the ability to verify proofs on the Algorand's state.
// In addition to that proof, this message also contains fields that
// are needed in order to verify the next state proofs (VotersCommitment and LnProvenWeight).
type Message struct {
_struct struct{} `codec:",omitempty,omitemptyarray"`
// BlockHeadersCommitment contains a commitment on all light block headers within a state proof interval.
BlockHeadersCommitment []byte `codec:"b,allocbound=crypto.Sha256Size"`
VotersCommitment []byte `codec:"v,allocbound=crypto.SumhashDigestSize"`
LnProvenWeight uint64 `codec:"P"`
FirstAttestedRound uint64 `codec:"f"`
LastAttestedRound uint64 `codec:"l"`
}
// ToBeHashed returns the bytes of the message.
func (m Message) ToBeHashed() (protocol.HashID, []byte) {
return protocol.StateProofMessage, protocol.Encode(&m)
}
// Hash returns a hashed representation fitting the state proof messages.
func (m *Message) Hash() sp.MessageHash {
digest := crypto.GenericHashObj(crypto.HashFactory{HashType: sp.MessageHashType}.NewHash(), m)
result := sp.MessageHash{}
copy(result[:], digest)
return result
}
|
