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
use std::error;
use std::fmt;
#[derive(Debug)]
pub enum U2fError {
Asm1DecoderError,
BadSignature,
RandomSecureBytesError,
InvalidReservedByte,
ChallengeExpired,
WrongKeyHandler,
InvalidClientData,
InvalidSignatureData,
InvalidUserPresenceByte,
BadCertificate,
NotTrustedAnchor,
CounterTooLow
}
impl fmt::Display for U2fError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
U2fError::Asm1DecoderError => write!(f, "ASM1 Decoder error"),
U2fError::BadSignature => write!(f, "Not able to verify signature"),
U2fError::RandomSecureBytesError => write!(f, "Not able to generate random bytes"),
U2fError::InvalidReservedByte => write!(f, "Invalid Reserved Byte"),
U2fError::ChallengeExpired => write!(f, "Challenge Expired"),
U2fError::WrongKeyHandler => write!(f, "Wrong Key Handler"),
U2fError::InvalidClientData => write!(f, "Invalid Client Data"),
U2fError::InvalidSignatureData => write!(f, "Invalid Signature Data"),
U2fError::InvalidUserPresenceByte => write!(f, "Invalid User Presence Byte"),
U2fError::BadCertificate => write!(f, "Failed to parse certificate"),
U2fError::NotTrustedAnchor => write!(f, "Not Trusted Anchor"),
U2fError::CounterTooLow => write!(f, "Counter too low"),
}
}
}
impl error::Error for U2fError {
fn description(&self) -> &str {
match *self {
U2fError::Asm1DecoderError => "Error attempting to decode Asm1 message",
U2fError::BadSignature => "Error attempting to verify provided signature",
U2fError::RandomSecureBytesError => "Error attempting to generate random bytes",
U2fError::InvalidReservedByte => "Error attempting to parse Reserved Byte",
U2fError::ChallengeExpired => "Challenge has expired",
U2fError::WrongKeyHandler => "Wrong Key Handler",
U2fError::InvalidClientData => "Invalid Client Data",
U2fError::InvalidSignatureData => "Invalid Signature Data",
U2fError::InvalidUserPresenceByte => "Invalid User Presence Byte",
U2fError::BadCertificate => "Failed to parse certificate",
U2fError::NotTrustedAnchor => "Not Trusted Anchor",
U2fError::CounterTooLow => "Counter too low",
}
}
fn cause(&self) -> Option<&error::Error> {
match *self {
U2fError::Asm1DecoderError => None,
U2fError::BadSignature => None,
U2fError::RandomSecureBytesError => None,
U2fError::InvalidReservedByte => None,
U2fError::ChallengeExpired => None,
U2fError::WrongKeyHandler => None,
U2fError::InvalidClientData => None,
U2fError::InvalidSignatureData => None,
U2fError::InvalidUserPresenceByte => None,
U2fError::BadCertificate => None,
U2fError::NotTrustedAnchor => None,
U2fError::CounterTooLow => None,
}
}
}