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
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
use ethkey::{self, KeyPair, sign, Address, Password, Signature, Message, Public, Secret};
use ethkey::crypto::ecdh::agree;
use {json, Error};
use account::Version;
use crypto;
use super::crypto::Crypto;
#[derive(Debug, PartialEq, Clone)]
pub struct SafeAccount {
pub id: [u8; 16],
pub version: Version,
pub address: Address,
pub crypto: Crypto,
pub filename: Option<String>,
pub name: String,
pub meta: String,
}
impl Into<json::KeyFile> for SafeAccount {
fn into(self) -> json::KeyFile {
json::KeyFile {
id: From::from(self.id),
version: self.version.into(),
address: self.address.into(),
crypto: self.crypto.into(),
name: Some(self.name.into()),
meta: Some(self.meta.into()),
}
}
}
impl SafeAccount {
pub fn create(
keypair: &KeyPair,
id: [u8; 16],
password: &Password,
iterations: u32,
name: String,
meta: String
) -> Result<Self, crypto::Error> {
Ok(SafeAccount {
id: id,
version: Version::V3,
crypto: Crypto::with_secret(keypair.secret(), password, iterations)?,
address: keypair.address(),
filename: None,
name: name,
meta: meta,
})
}
pub fn from_file(json: json::KeyFile, filename: Option<String>) -> Self {
SafeAccount {
id: json.id.into(),
version: json.version.into(),
address: json.address.into(),
crypto: json.crypto.into(),
filename: filename,
name: json.name.unwrap_or(String::new()),
meta: json.meta.unwrap_or("{}".to_owned()),
}
}
pub fn from_vault_file(password: &Password, json: json::VaultKeyFile, filename: Option<String>) -> Result<Self, Error> {
let meta_crypto: Crypto = json.metacrypto.into();
let meta_plain = meta_crypto.decrypt(password)?;
let meta_plain = json::VaultKeyMeta::load(&meta_plain).map_err(|e| Error::Custom(format!("{:?}", e)))?;
Ok(SafeAccount::from_file(json::KeyFile {
id: json.id,
version: json.version,
crypto: json.crypto,
address: meta_plain.address,
name: meta_plain.name,
meta: meta_plain.meta,
}, filename))
}
pub fn into_vault_file(self, iterations: u32, password: &Password) -> Result<json::VaultKeyFile, Error> {
let meta_plain = json::VaultKeyMeta {
address: self.address.into(),
name: Some(self.name),
meta: Some(self.meta),
};
let meta_plain = meta_plain.write().map_err(|e| Error::Custom(format!("{:?}", e)))?;
let meta_crypto = Crypto::with_plain(&meta_plain, password, iterations)?;
Ok(json::VaultKeyFile {
id: self.id.into(),
version: self.version.into(),
crypto: self.crypto.into(),
metacrypto: meta_crypto.into(),
})
}
pub fn sign(&self, password: &Password, message: &Message) -> Result<Signature, Error> {
let secret = self.crypto.secret(password)?;
sign(&secret, message).map_err(From::from)
}
pub fn decrypt(&self, password: &Password, shared_mac: &[u8], message: &[u8]) -> Result<Vec<u8>, Error> {
let secret = self.crypto.secret(password)?;
ethkey::crypto::ecies::decrypt(&secret, shared_mac, message).map_err(From::from)
}
pub fn agree(&self, password: &Password, other: &Public) -> Result<Secret, Error> {
let secret = self.crypto.secret(password)?;
agree(&secret, other).map_err(From::from)
}
pub fn public(&self, password: &Password) -> Result<Public, Error> {
let secret = self.crypto.secret(password)?;
Ok(KeyPair::from_secret(secret)?.public().clone())
}
pub fn change_password(&self, old_password: &Password, new_password: &Password, iterations: u32) -> Result<Self, Error> {
let secret = self.crypto.secret(old_password)?;
let result = SafeAccount {
id: self.id.clone(),
version: self.version.clone(),
crypto: Crypto::with_secret(&secret, new_password, iterations)?,
address: self.address.clone(),
filename: self.filename.clone(),
name: self.name.clone(),
meta: self.meta.clone(),
};
Ok(result)
}
pub fn check_password(&self, password: &Password) -> bool {
self.crypto.secret(password).is_ok()
}
}
#[cfg(test)]
mod tests {
use ethkey::{Generator, Random, verify_public, Message};
use super::SafeAccount;
#[test]
fn sign_and_verify_public() {
let keypair = Random.generate().unwrap();
let password = "hello world".into();
let message = Message::default();
let account = SafeAccount::create(&keypair, [0u8; 16], &password, 10240, "Test".to_owned(), "{}".to_owned());
let signature = account.unwrap().sign(&password, &message).unwrap();
assert!(verify_public(keypair.public(), &signature, &message).unwrap());
}
#[test]
fn change_password() {
let keypair = Random.generate().unwrap();
let first_password = "hello world".into();
let sec_password = "this is sparta".into();
let i = 10240;
let message = Message::default();
let account = SafeAccount::create(&keypair, [0u8; 16], &first_password, i, "Test".to_owned(), "{}".to_owned()).unwrap();
let new_account = account.change_password(&first_password, &sec_password, i).unwrap();
assert!(account.sign(&first_password, &message).is_ok());
assert!(account.sign(&sec_password, &message).is_err());
assert!(new_account.sign(&first_password, &message).is_err());
assert!(new_account.sign(&sec_password, &message).is_ok());
}
}