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
#[derive(Debug, PartialEq, Eq)]
/// Errors for token operations.
pub enum Error {
/// Error for a token with an invalid format.
TokenFormat,
/// Error for a failed Base64 (URL-safe without padding) encoding/decoding.
Base64,
/// Error for a failed token validation.
TokenValidation,
/// Error for an invalid key.
Key,
/// Error for a failed encryption operation.
Encryption,
/// Error for a failed attempt to generate bytes using a CSPRNG.
Csprng,
/// Error for a conversion that would be lossy.
LossyConversion,
/// Error for attempting to create a token with an empty payload.
EmptyPayload,
/// Error for attempting to create an invalid claim.
InvalidClaim,
/// Claim validation error. See [`crate::claims::ClaimsValidationRules::validate_claims`].
ClaimValidation(ClaimValidationError),
/// Error for attempting to parse a Claim but found invalid UTF-8 sequence.
ClaimInvalidUtf8,
/// Error for attempting to parse a Claim but found invalid JSON sequence.
ClaimInvalidJson,
/// Error during (de)serialization of PASERK types.
PaserkParsing,
/// Error during signing of a message.
Signing,
/// Error during conversion between uncompressed<->compressed public keys.
PublicKeyConversion,
/// Error during key generation.
KeyGeneration,
/// The payload was not valid UTF-8.
PayloadInvalidUtf8,
/// Error during parsing of a `Footer`.
FooterParsing,
}
#[derive(Debug, PartialEq, Eq)]
/// Errors for claim validation operations.
pub enum ClaimValidationError {
/// `Audience` claim doesn't match.
Aud,
/// `Expiration` claim expired.
Exp,
/// `Issued at` claim has date set in the future.
Iat,
/// `Issuer` claim doesn't match.
Iss,
/// `Token Identifier` doesn't match.
Jti,
/// `Not before` claim date not reached.
Nbf,
/// `Subject` claim doesn't match.
Sub,
/// No `Audience` claim was set.
NoAud,
/// No `Expiration` claim was set.
NoExp,
/// No `Issued at` claim was set.
NoIat,
/// No `Issuer` claim was set.
NoIss,
/// No `Token Identifier` claim was set.
NoJti,
/// No `Not before` claim was set.
NoNbf,
/// No `Subject` claim was set.
NoSub,
/// Claim `Expiration` is no string.
NoStrExp,
/// Claim `Issued at` is no string.
NoStrIat,
/// Claim `Not before` is no string.
NoStrNbf,
/// Error during parsing of `Expiration` claim.
ParseExp,
/// Error during parsing of `Issued at` claim.
ParseIat,
/// Error during parsing of `Not before` claim.
ParseNbf,
}
#[cfg(feature = "std")]
impl std::error::Error for Error {}
#[cfg(feature = "std")]
impl std::fmt::Display for Error {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.write_fmt(format_args!("{self:?}"))
}
}
impl From<ct_codecs::Error> for Error {
fn from(_: ct_codecs::Error) -> Self {
Error::Base64
}
}
impl From<getrandom::Error> for Error {
fn from(_: getrandom::Error) -> Self {
Error::Csprng
}
}
impl From<core::num::TryFromIntError> for Error {
fn from(_: core::num::TryFromIntError) -> Self {
Error::LossyConversion
}
}
#[test]
fn test_error_from_impls() {
let _ = format!("{:?}", Error::TokenFormat);
let _ = format!("{}", Error::TokenFormat);
assert_eq!(Error::from(ct_codecs::Error::InvalidInput), Error::Base64);
assert_eq!(Error::from(getrandom::Error::UNSUPPORTED), Error::Csprng);
}