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
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
pub mod accumulator;
pub mod definition;
pub mod position;
#[cfg(any(test, feature = "fuzzing"))]
pub mod proptest_proof;
#[cfg(test)]
mod unit_tests;
use crate::{
ledger_info::LedgerInfo,
transaction::{TransactionInfo, Version},
};
use anyhow::{ensure, Result};
use diem_crypto::{
hash::{
CryptoHash, CryptoHasher, EventAccumulatorHasher, SparseMerkleInternalHasher,
TestOnlyHasher, TransactionAccumulatorHasher,
},
HashValue,
};
use diem_crypto_derive::CryptoHasher;
#[cfg(any(test, feature = "fuzzing"))]
use proptest_derive::Arbitrary;
use serde::{Deserialize, Serialize};
use std::marker::PhantomData;
pub use self::definition::{
AccountStateProof, AccumulatorConsistencyProof, AccumulatorExtensionProof, AccumulatorProof,
AccumulatorRangeProof, EventAccumulatorProof, EventProof, SparseMerkleProof,
SparseMerkleRangeProof, TransactionAccumulatorProof, TransactionAccumulatorRangeProof,
TransactionAccumulatorSummary, TransactionInfoWithProof, TransactionListProof,
};
#[cfg(any(test, feature = "fuzzing"))]
pub use self::definition::{TestAccumulatorProof, TestAccumulatorRangeProof};
fn verify_transaction_info(
ledger_info: &LedgerInfo,
transaction_version: Version,
transaction_info: &TransactionInfo,
ledger_info_to_transaction_info_proof: &TransactionAccumulatorProof,
) -> Result<()> {
ensure!(
transaction_version <= ledger_info.version(),
"Transaction version {} is newer than LedgerInfo version {}.",
transaction_version,
ledger_info.version(),
);
let transaction_info_hash = transaction_info.hash();
ledger_info_to_transaction_info_proof.verify(
ledger_info.transaction_accumulator_hash(),
transaction_info_hash,
transaction_version,
)?;
Ok(())
}
pub struct MerkleTreeInternalNode<H> {
left_child: HashValue,
right_child: HashValue,
hasher: PhantomData<H>,
}
impl<H: CryptoHasher> MerkleTreeInternalNode<H> {
pub fn new(left_child: HashValue, right_child: HashValue) -> Self {
Self {
left_child,
right_child,
hasher: PhantomData,
}
}
}
impl<H: CryptoHasher> CryptoHash for MerkleTreeInternalNode<H> {
type Hasher = H;
fn hash(&self) -> HashValue {
let mut state = Self::Hasher::default();
state.update(self.left_child.as_ref());
state.update(self.right_child.as_ref());
state.finish()
}
}
pub type SparseMerkleInternalNode = MerkleTreeInternalNode<SparseMerkleInternalHasher>;
pub type TransactionAccumulatorInternalNode = MerkleTreeInternalNode<TransactionAccumulatorHasher>;
pub type EventAccumulatorInternalNode = MerkleTreeInternalNode<EventAccumulatorHasher>;
pub type TestAccumulatorInternalNode = MerkleTreeInternalNode<TestOnlyHasher>;
#[derive(Clone, Copy, CryptoHasher, Debug, Eq, PartialEq, Serialize, Deserialize)]
#[cfg_attr(any(test, feature = "fuzzing"), derive(Arbitrary))]
pub struct SparseMerkleLeafNode {
key: HashValue,
value_hash: HashValue,
}
impl SparseMerkleLeafNode {
pub fn new(key: HashValue, value_hash: HashValue) -> Self {
SparseMerkleLeafNode { key, value_hash }
}
pub fn key(&self) -> HashValue {
self.key
}
pub fn value_hash(&self) -> HashValue {
self.value_hash
}
}
impl CryptoHash for SparseMerkleLeafNode {
type Hasher = SparseMerkleLeafNodeHasher;
fn hash(&self) -> HashValue {
let mut state = Self::Hasher::default();
state.update(self.key.as_ref());
state.update(self.value_hash.as_ref());
state.finish()
}
}