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

//! PKCS#1 RSA public key document.

use crate::{DecodeRsaPublicKey, EncodeRsaPublicKey, Error, Result, RsaPublicKey};
use alloc::vec::Vec;
use core::fmt;
use der::{Decodable, Document, Encodable};

#[cfg(feature = "pem")]
use {
    crate::{pem, LineEnding},
    alloc::string::String,
    core::str::FromStr,
};

#[cfg(feature = "std")]
use std::path::Path;

/// PKCS#1 `RSA PUBLIC KEY` document.
///
/// This type provides storage for [`RsaPublicKey`] encoded as ASN.1
/// DER with the invariant that the contained-document is "well-formed", i.e.
/// it will parse successfully according to this crate's parsing rules.
#[derive(Clone)]
#[cfg_attr(docsrs, doc(cfg(feature = "alloc")))]
pub struct RsaPublicKeyDocument(Vec<u8>);

impl<'a> Document<'a> for RsaPublicKeyDocument {
    type Message = RsaPublicKey<'a>;
    const SENSITIVE: bool = false;
}

impl DecodeRsaPublicKey for RsaPublicKeyDocument {
    fn from_pkcs1_der(bytes: &[u8]) -> Result<Self> {
        Ok(Self::from_der(bytes)?)
    }

    #[cfg(feature = "pem")]
    #[cfg_attr(docsrs, doc(cfg(feature = "pem")))]
    fn from_pkcs1_pem(s: &str) -> Result<Self> {
        Ok(Self::from_pem(s)?)
    }

    #[cfg(feature = "std")]
    #[cfg_attr(docsrs, doc(cfg(feature = "std")))]
    fn read_pkcs1_der_file(path: impl AsRef<Path>) -> Result<Self> {
        Ok(Self::read_der_file(path)?)
    }

    #[cfg(all(feature = "pem", feature = "std"))]
    #[cfg_attr(docsrs, doc(cfg(feature = "pem")))]
    #[cfg_attr(docsrs, doc(cfg(feature = "std")))]
    fn read_pkcs1_pem_file(path: impl AsRef<Path>) -> Result<Self> {
        Ok(Self::read_pem_file(path)?)
    }
}

impl EncodeRsaPublicKey for RsaPublicKeyDocument {
    fn to_pkcs1_der(&self) -> Result<RsaPublicKeyDocument> {
        Ok(self.clone())
    }

    #[cfg(feature = "pem")]
    #[cfg_attr(docsrs, doc(cfg(feature = "pem")))]
    fn to_pkcs1_pem(&self, line_ending: LineEnding) -> Result<String> {
        Ok(self.to_pem(line_ending)?)
    }

    #[cfg(feature = "std")]
    #[cfg_attr(docsrs, doc(cfg(feature = "std")))]
    fn write_pkcs1_der_file(&self, path: impl AsRef<Path>) -> Result<()> {
        Ok(self.write_der_file(path)?)
    }

    #[cfg(all(feature = "pem", feature = "std"))]
    #[cfg_attr(docsrs, doc(cfg(all(feature = "pem", feature = "std"))))]
    fn write_pkcs1_pem_file(&self, path: impl AsRef<Path>, line_ending: LineEnding) -> Result<()> {
        Ok(self.write_pem_file(path, line_ending)?)
    }
}

impl AsRef<[u8]> for RsaPublicKeyDocument {
    fn as_ref(&self) -> &[u8] {
        self.0.as_ref()
    }
}

impl TryFrom<&[u8]> for RsaPublicKeyDocument {
    type Error = Error;

    fn try_from(bytes: &[u8]) -> Result<Self> {
        Ok(Self::from_der(bytes)?)
    }
}

impl TryFrom<RsaPublicKey<'_>> for RsaPublicKeyDocument {
    type Error = Error;

    fn try_from(public_key: RsaPublicKey<'_>) -> Result<RsaPublicKeyDocument> {
        RsaPublicKeyDocument::try_from(&public_key)
    }
}

impl TryFrom<&RsaPublicKey<'_>> for RsaPublicKeyDocument {
    type Error = Error;

    fn try_from(public_key: &RsaPublicKey<'_>) -> Result<RsaPublicKeyDocument> {
        Ok(public_key.to_vec()?.try_into()?)
    }
}

impl TryFrom<Vec<u8>> for RsaPublicKeyDocument {
    type Error = der::Error;

    fn try_from(bytes: Vec<u8>) -> der::Result<Self> {
        // Ensure document is well-formed
        RsaPublicKey::from_der(bytes.as_slice())?;
        Ok(Self(bytes))
    }
}

impl fmt::Debug for RsaPublicKeyDocument {
    fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
        fmt.debug_tuple("RsaPublicKeyDocument")
            .field(&self.decode())
            .finish()
    }
}

#[cfg(feature = "pem")]
#[cfg_attr(docsrs, doc(cfg(feature = "pem")))]
impl FromStr for RsaPublicKeyDocument {
    type Err = Error;

    fn from_str(s: &str) -> Result<Self> {
        Self::from_pkcs1_pem(s)
    }
}

#[cfg(feature = "pem")]
#[cfg_attr(docsrs, doc(cfg(feature = "pem")))]
impl pem::PemLabel for RsaPublicKeyDocument {
    const TYPE_LABEL: &'static str = "RSA PUBLIC KEY";
}