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
|
//! PKCS#8 version identifier.
use crate::Error;
use der::{Decode, Encode, FixedTag, Reader, Tag, Writer};
/// Version identifier for PKCS#8 documents.
///
/// (RFC 5958 designates `0` and `1` as the only valid versions for PKCS#8 documents)
#[derive(Clone, Debug, Copy, PartialEq, Eq)]
pub enum Version {
/// Denotes PKCS#8 v1: no public key field.
V1 = 0,
/// Denotes PKCS#8 v2: `OneAsymmetricKey` with public key field.
V2 = 1,
}
impl Version {
/// Is this version expected to have a public key?
pub fn has_public_key(self) -> bool {
match self {
Version::V1 => false,
Version::V2 => true,
}
}
}
impl<'a> Decode<'a> for Version {
fn decode<R: Reader<'a>>(decoder: &mut R) -> der::Result<Self> {
Version::try_from(u8::decode(decoder)?).map_err(|_| Self::TAG.value_error())
}
}
impl Encode for Version {
fn encoded_len(&self) -> der::Result<der::Length> {
der::Length::from(1u8).for_tlv()
}
fn encode(&self, writer: &mut impl Writer) -> der::Result<()> {
u8::from(*self).encode(writer)
}
}
impl From<Version> for u8 {
fn from(version: Version) -> Self {
version as u8
}
}
impl TryFrom<u8> for Version {
type Error = Error;
fn try_from(byte: u8) -> Result<Version, Error> {
match byte {
0 => Ok(Version::V1),
1 => Ok(Version::V2),
_ => Err(Self::TAG.value_error().into()),
}
}
}
impl FixedTag for Version {
const TAG: Tag = Tag::Integer;
}
|
