avx_async/
crypto.rs

1//! Cryptographic Module
2//!
3//! Secure task execution and encrypted communication
4
5#![allow(dead_code)]
6
7use std::sync::{Arc, Mutex};
8
9/// Cryptographic service for runtime security
10#[derive(Clone)]
11pub struct CryptoService {
12    keys: Arc<Mutex<KeyStore>>,
13}
14
15struct KeyStore {
16    symmetric_keys: Vec<SymmetricKey>,
17    key_counter: u64,
18}
19
20#[derive(Clone, Debug)]
21struct SymmetricKey {
22    id: u64,
23    key: [u8; 32],
24    created_at: u128,
25}
26
27impl CryptoService {
28    pub fn new() -> Self {
29        Self {
30            keys: Arc::new(Mutex::new(KeyStore {
31                symmetric_keys: Vec::new(),
32                key_counter: 0,
33            })),
34        }
35    }
36
37    /// Generate a new symmetric key
38    pub fn generate_key(&self) -> u64 {
39        let mut keys = self.keys.lock().unwrap();
40        let key_id = keys.key_counter;
41        keys.key_counter += 1;
42
43        // Generate pseudo-random key using seed
44        let mut key = [0u8; 32];
45        for (i, byte) in key.iter_mut().enumerate() {
46            *byte = ((key_id * 7919 + i as u64 * 3571) % 256) as u8;
47        }
48
49        let timestamp = std::time::SystemTime::now()
50            .duration_since(std::time::UNIX_EPOCH)
51            .unwrap()
52            .as_millis();
53
54        keys.symmetric_keys.push(SymmetricKey {
55            id: key_id,
56            key,
57            created_at: timestamp,
58        });
59
60        key_id
61    }
62
63    /// Encrypt data with XOR cipher (simplified)
64    pub fn encrypt(&self, key_id: u64, data: &[u8]) -> Vec<u8> {
65        let keys = self.keys.lock().unwrap();
66
67        if let Some(key) = keys.symmetric_keys.iter().find(|k| k.id == key_id) {
68            data.iter()
69                .enumerate()
70                .map(|(i, &byte)| byte ^ key.key[i % 32])
71                .collect()
72        } else {
73            data.to_vec()
74        }
75    }
76
77    /// Decrypt data with XOR cipher (simplified)
78    pub fn decrypt(&self, key_id: u64, data: &[u8]) -> Vec<u8> {
79        // XOR is symmetric
80        self.encrypt(key_id, data)
81    }
82
83    /// Hash data using djb2 algorithm
84    pub fn hash(&self, data: &[u8]) -> String {
85        let mut hash: u64 = 5381;
86        for &byte in data {
87            hash = hash.wrapping_mul(33).wrapping_add(byte as u64);
88        }
89        format!("{:016x}", hash)
90    }
91
92    /// Verify data integrity
93    pub fn verify(&self, data: &[u8], expected_hash: &str) -> bool {
94        self.hash(data) == expected_hash
95    }
96
97    /// Sign data (simplified signature)
98    pub fn sign(&self, key_id: u64, data: &[u8]) -> String {
99        let keys = self.keys.lock().unwrap();
100
101        if let Some(key) = keys.symmetric_keys.iter().find(|k| k.id == key_id) {
102            let mut signature: u64 = 5381;
103            for (i, &byte) in data.iter().enumerate() {
104                signature = signature
105                    .wrapping_mul(33)
106                    .wrapping_add(byte as u64)
107                    .wrapping_add(key.key[i % 32] as u64);
108            }
109            format!("{:016x}", signature)
110        } else {
111            String::new()
112        }
113    }
114
115    /// Get crypto statistics
116    pub fn stats(&self) -> CryptoStats {
117        let keys = self.keys.lock().unwrap();
118        CryptoStats {
119            total_keys: keys.symmetric_keys.len(),
120            keys_generated: keys.key_counter,
121        }
122    }
123}
124
125impl Default for CryptoService {
126    fn default() -> Self {
127        Self::new()
128    }
129}
130
131#[derive(Debug, Clone)]
132pub struct CryptoStats {
133    pub total_keys: usize,
134    pub keys_generated: u64,
135}
136
137impl std::fmt::Display for CryptoStats {
138    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
139        write!(
140            f,
141            "CryptoStats[keys={}, generated={}]",
142            self.total_keys, self.keys_generated
143        )
144    }
145}
146
147/// Secure channel for encrypted communication
148#[derive(Clone)]
149pub struct SecureChannel {
150    crypto: CryptoService,
151    key_id: u64,
152}
153
154impl SecureChannel {
155    pub fn new(crypto: CryptoService) -> Self {
156        let key_id = crypto.generate_key();
157        Self { crypto, key_id }
158    }
159
160    /// Send encrypted message
161    pub fn send(&self, message: &[u8]) -> Vec<u8> {
162        self.crypto.encrypt(self.key_id, message)
163    }
164
165    /// Receive and decrypt message
166    pub fn receive(&self, encrypted: &[u8]) -> Vec<u8> {
167        self.crypto.decrypt(self.key_id, encrypted)
168    }
169
170    /// Get channel key ID
171    pub fn key_id(&self) -> u64 {
172        self.key_id
173    }
174}
175
176
177
178
179
avx_async/crypto.rs

avx_async/
crypto.rs
