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#[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,
/// 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,
}
#[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::FAILED_RDRAND), Error::Csprng);
}
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