-
Notifications
You must be signed in to change notification settings - Fork 0
/
pkcs11client.rs
143 lines (129 loc) · 4.59 KB
/
pkcs11client.rs
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
use anyhow::{bail, Result};
use cryptoki::{
context::{CInitializeArgs, Pkcs11},
object::{Attribute, AttributeType, ObjectClass, ObjectHandle},
session::{Session, SessionFlags, UserType},
slot::Slot,
};
use crate::{
config::{Opt, Pkcs11ServerOpt, ServerOpt},
key::{Key, KeyType},
};
pub(crate) fn get_keys(opt: Opt) -> Result<Vec<Key>> {
if let ServerOpt::Pkcs11(server_opt) = &opt.server {
let pkcs11 = Pkcs11::new(&server_opt.lib_path)?;
pkcs11.initialize(CInitializeArgs::OsThreads)?;
let slot = get_slot(&pkcs11, server_opt)?;
println!("Using PKCS#11 slot id {} ({:#x})", slot.id(), slot.id());
let mut flags = SessionFlags::new();
flags.set_serial_session(true).set_rw_session(true);
let session = pkcs11.open_session_no_callback(slot, flags)?;
session.login(UserType::User, server_opt.user_pin.as_deref())?;
let mut keys = Vec::new();
for key_handle in session.find_objects(&[Attribute::Class(ObjectClass::PRIVATE_KEY)])? {
match get_key(&session, key_handle) {
Ok(key) => keys.push(key),
Err(err) => eprintln!(
"Error retrieving attributes for private key {:?}: {}",
key_handle, err
),
}
}
for key_handle in session.find_objects(&[Attribute::Class(ObjectClass::PUBLIC_KEY)])? {
match get_key(&session, key_handle) {
Ok(key) => keys.push(key),
Err(err) => eprintln!(
"Error retrieving attributes for public key {:?}: {}",
key_handle, err
),
}
}
keys.sort_by_key(|v| v.id.clone());
Ok(keys)
} else {
bail!("Expected PKCS#11 settings")
}
}
fn get_key(session: &Session, key_handle: ObjectHandle) -> Result<Key> {
let mut key = Key {
id: Default::default(),
typ: KeyType::Private,
name: Default::default(),
alg: Default::default(),
len: Default::default(),
};
let request_attrs = [
AttributeType::Class,
AttributeType::Id,
AttributeType::ModulusBits,
AttributeType::KeyType,
AttributeType::Label,
];
let attrs = session.get_attributes(key_handle, &request_attrs)?;
for attr in attrs {
match attr {
Attribute::Class(class) => {
if class == ObjectClass::PRIVATE_KEY {
key.typ = KeyType::Private;
} else if class == ObjectClass::PUBLIC_KEY {
key.typ = KeyType::Public;
} else {
bail!("Unsupported object class");
}
}
Attribute::Id(id) => {
key.id = hex::encode_upper(&id);
}
Attribute::KeyType(typ) => {
if typ == cryptoki::object::KeyType::RSA {
key.alg = "RSA".to_string();
} else {
key.alg = "Non-RSA".to_string();
}
}
Attribute::Label(label) => {
key.name = String::from_utf8_lossy(&label).to_string();
}
Attribute::ModulusBits(bits) => {
key.len = bits.to_string();
}
_ => {
// ignore unexpected attributes
}
}
}
Ok(key)
}
fn get_slot(pkcs11: &Pkcs11, server_opt: &Pkcs11ServerOpt) -> Result<Slot> {
fn has_token_label(pkcs11: &Pkcs11, slot: Slot, slot_label: &str) -> bool {
pkcs11
.get_token_info(slot)
.map(|info| info.label().trim_end() == slot_label)
.unwrap_or(false)
}
let slot = match (&server_opt.slot_id, &server_opt.slot_label) {
(Some(id), None) => {
match pkcs11
.get_all_slots()?
.into_iter()
.find(|&slot| slot.id() == *id)
{
Some(slot) => slot,
None => bail!("Cannot find slot wiht id {}", id),
}
}
(None, Some(label)) => {
match pkcs11
.get_slots_with_initialized_token()?
.into_iter()
.find(|&slot| has_token_label(pkcs11, slot, label))
{
Some(slot) => slot,
None => bail!("Cannot find slot with label '{}'", label),
}
}
(Some(_), Some(_)) => bail!("Cannot specify both slot id and slot label"),
(None, None) => bail!("Must specify at least one of slot id or slot label"),
};
Ok(slot)
}