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//! Error types
use core::fmt;
#[cfg(feature = "pem")]
use der::pem;
/// Result type
pub type Result<T> = core::result::Result<T, Error>;
/// Error type
#[derive(Copy, Clone, Debug, Eq, PartialEq)]
#[non_exhaustive]
pub enum Error {
/// ASN.1 DER-related errors.
Asn1(der::Error),
/// Errors relating to PKCS#5-encrypted keys.
#[cfg(feature = "pkcs5")]
EncryptedPrivateKey(pkcs5::Error),
/// Malformed cryptographic key contained in a PKCS#8 document.
///
/// This is intended for relaying errors related to the raw data contained
/// within [`PrivateKeyInfo::private_key`][`crate::PrivateKeyInfo::private_key`]
/// or [`SubjectPublicKeyInfo::subject_public_key`][`crate::SubjectPublicKeyInfo::subject_public_key`].
KeyMalformed,
/// [`AlgorithmIdentifier::parameters`][`crate::AlgorithmIdentifierRef::parameters`]
/// is malformed or otherwise encoded in an unexpected manner.
ParametersMalformed,
/// Public key errors propagated from the [`spki::Error`] type.
PublicKey(spki::Error),
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
Error::Asn1(err) => write!(f, "PKCS#8 ASN.1 error: {}", err),
#[cfg(feature = "pkcs5")]
Error::EncryptedPrivateKey(err) => write!(f, "{}", err),
Error::KeyMalformed => f.write_str("PKCS#8 cryptographic key data malformed"),
Error::ParametersMalformed => f.write_str("PKCS#8 algorithm parameters malformed"),
Error::PublicKey(err) => write!(f, "public key error: {}", err),
}
}
}
#[cfg(feature = "std")]
impl std::error::Error for Error {}
impl From<der::Error> for Error {
fn from(err: der::Error) -> Error {
Error::Asn1(err)
}
}
impl From<der::ErrorKind> for Error {
fn from(err: der::ErrorKind) -> Error {
Error::Asn1(err.into())
}
}
#[cfg(feature = "pem")]
impl From<pem::Error> for Error {
fn from(err: pem::Error) -> Error {
der::Error::from(err).into()
}
}
#[cfg(feature = "pkcs5")]
impl From<pkcs5::Error> for Error {
fn from(err: pkcs5::Error) -> Error {
Error::EncryptedPrivateKey(err)
}
}
impl From<spki::Error> for Error {
fn from(err: spki::Error) -> Error {
Error::PublicKey(err)
}
}
impl From<Error> for spki::Error {
fn from(err: Error) -> spki::Error {
match err {
Error::Asn1(e) => spki::Error::Asn1(e),
Error::PublicKey(e) => e,
_ => spki::Error::KeyMalformed,
}
}
}
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