casper_node/components/consensus/
cl_context.rs

1use std::sync::Arc;
2
3use datasize::DataSize;
4use serde::{Deserialize, Serialize};
5use tracing::info;
6
7use casper_types::{crypto, Digest, PublicKey, SecretKey, Signature};
8
9use crate::{
10    components::consensus::traits::{ConsensusValueT, Context, ValidatorSecret},
11    types::BlockPayload,
12};
13
14#[derive(DataSize)]
15pub struct Keypair {
16    secret_key: Arc<SecretKey>,
17    public_key: PublicKey,
18}
19
20impl Keypair {
21    pub(crate) fn new(secret_key: Arc<SecretKey>, public_key: PublicKey) -> Self {
22        Self {
23            secret_key,
24            public_key,
25        }
26    }
27
28    #[cfg(test)]
29    pub(crate) fn public_key(&self) -> &PublicKey {
30        &self.public_key
31    }
32}
33
34impl From<Arc<SecretKey>> for Keypair {
35    fn from(secret_key: Arc<SecretKey>) -> Self {
36        let public_key: PublicKey = secret_key.as_ref().into();
37        Self::new(secret_key, public_key)
38    }
39}
40
41impl ValidatorSecret for Keypair {
42    type Hash = Digest;
43    type Signature = Signature;
44
45    fn sign(&self, hash: &Digest) -> Signature {
46        crypto::sign(hash, self.secret_key.as_ref(), &self.public_key)
47    }
48}
49
50impl ConsensusValueT for Arc<BlockPayload> {
51    fn needs_validation(&self) -> bool {
52        self.all_transactions().next().is_some()
53            || !self.accusations().is_empty()
54            || self.rewarded_signatures().has_some()
55    }
56}
57
58/// The collection of types used for cryptography, IDs and blocks in the Casper node.
59#[derive(Clone, DataSize, Debug, Deserialize, PartialEq, Eq, PartialOrd, Ord, Hash, Serialize)]
60pub struct ClContext;
61
62impl Context for ClContext {
63    type ConsensusValue = Arc<BlockPayload>;
64    type ValidatorId = PublicKey;
65    type ValidatorSecret = Keypair;
66    type Signature = Signature;
67    type Hash = Digest;
68    type InstanceId = Digest;
69
70    fn hash(data: &[u8]) -> Digest {
71        Digest::hash(data)
72    }
73
74    fn verify_signature(hash: &Digest, public_key: &PublicKey, signature: &Signature) -> bool {
75        if let Err(error) = crypto::verify(hash, signature, public_key) {
76            info!(%error, %signature, %public_key, %hash, "failed to validate signature");
77            return false;
78        }
79        true
80    }
81}
82
83mod specimen_support {
84    use super::Keypair;
85    use crate::utils::specimen::{Cache, LargestSpecimen, SizeEstimator};
86    use casper_types::{PublicKey, SecretKey};
87    use std::sync::Arc;
88
89    impl LargestSpecimen for Keypair {
90        fn largest_specimen<E: SizeEstimator>(estimator: &E, cache: &mut Cache) -> Self {
91            let secret_key = SecretKey::largest_specimen(estimator, cache);
92            let public_key = PublicKey::from(&secret_key);
93            Keypair {
94                secret_key: Arc::new(secret_key),
95                public_key,
96            }
97        }
98    }
99}
casper_node/components/consensus/cl_context.rs

casper_node/components/consensus/
cl_context.rs
