openmls 0.4.1

This is a WIP Rust implementation of the Messaging Layer Security (MLS) protocol based on draft 12+.
Documentation 
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//! # Key Package errors
//!
//! `KeyPackageError` are thrown on errors handling `KeyPackage`s and
//! `KeyPackageBundle`s.

use thiserror::Error;

use crate::{error::LibraryError, extensions::errors::ExtensionError};

/// KeyPackage verify error
#[derive(Error, Debug, PartialEq, Clone)]
pub enum KeyPackageVerifyError {
    /// See [`LibraryError`] for more details.
    #[error(transparent)]
    LibraryError(#[from] LibraryError),
    /// The lifetime extension of the key package is not valid.
    #[error("The lifetime extension of the key package is not valid.")]
    InvalidLifetimeExtension,
    /// A mandatory extension is missing in the key package.
    #[error("A mandatory extension is missing in the key package.")]
    MandatoryExtensionsMissing,
    /// The key package signature is not valid.
    #[error("The key package signature is not valid.")]
    InvalidSignature,
}

/// KeyPackage extension support error
#[derive(Error, Debug, PartialEq, Clone)]
pub enum KeyPackageExtensionSupportError {
    /// The key package does not support all required extensions.
    #[error("The key package does not support all required extensions.")]
    UnsupportedExtension,
}

/// KeyPackage new error
#[derive(Error, Debug, PartialEq, Clone)]
pub enum KeyPackageNewError {
    /// See [`LibraryError`] for more details.
    #[error(transparent)]
    LibraryError(#[from] LibraryError),
    /// The ciphersuite does not match the signature scheme.
    #[error("The ciphersuite does not match the signature scheme.")]
    CiphersuiteSignatureSchemeMismatch,
}

/// KeyPackageBundle new error
#[derive(Error, Debug, PartialEq, Clone)]
pub enum KeyPackageBundleNewError {
    /// See [`LibraryError`] for more details.
    #[error(transparent)]
    LibraryError(#[from] LibraryError),
    /// Creating a new key package requires at least one ciphersuite.
    #[error("Creating a new key package requires at least one ciphersuite.")]
    NoCiphersuitesSupplied,
    /// The ciphersuite does not match the signature scheme.
    #[error("The ciphersuite does not match the signature scheme.")]
    CiphersuiteSignatureSchemeMismatch,
    /// Duplicate extensions are not allowed.
    #[error("Duplicate extensions are not allowed.")]
    DuplicateExtension,
    /// The list of ciphersuites is not consistent with the capabilities extension.
    #[error("The list of ciphersuites is not consistent with the capabilities extension.")]
    CiphersuiteMismatch,
    /// See [`ExtensionError`] for more details.
    #[error(transparent)]
    ExtensionError(#[from] ExtensionError),
}