Crate const_oid

Crate const_oid 

Source
Expand description

§RustCrypto: Object Identifiers (OIDs)

crate Docs Build Status Apache2/MIT licensed Rust Version Project Chat

Const-friendly implementation of the ISO/IEC Object Identifier (OID) standard as defined in ITU X.660, with support for BER/DER encoding/decoding as well as heapless no_std (i.e. embedded) environments.

Documentation

§About OIDs

Object Identifiers, a.k.a. OIDs, are an International Telecommunications Union (ITU) and ISO/IEC standard for naming any object, concept, or “thing” with a globally unambiguous persistent name.

The ITU’s X.660 standard provides the OID specification. Every OID is part of a hierarchical namespace which begins with a root OID, which is either the ITU’s root OID (0), the ISO’s root OID (1), or the joint ISO/ITU root OID (2).

The following is an example of an OID, in this case identifying the rsaEncryption algorithm:

1.2.840.113549.1.1.1

For more information, see: https://en.wikipedia.org/wiki/Object_identifier

§Implementation

This library supports parsing OIDs in const contexts, e.g.:

use const_oid::ObjectIdentifier;

pub const MY_OID: ObjectIdentifier = ObjectIdentifier::new_unwrap("1.2.840.113549.1.1.1");

The OID parser is implemented entirely in terms of const fn and without the use of proc macros.

Additionally, it also includes a const fn OID serializer, and stores the OIDs parsed from const contexts encoded using the BER/DER serialization (sans header).

This allows ObjectIdentifier to impl AsRef<[u8]> which can be used to obtain the BER/DER serialization of an OID, even one declared const.

Additionally, it impls FromStr and TryFrom<&[u8]> and functions just as well as a runtime OID library.

§Minimum Supported Rust Version

This crate requires Rust 1.57 at a minimum.

We may change the MSRV in the future, but it will be accompanied by a minor version bump.

§License

Licensed under either of:

at your option.

§Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

Modules§

arcs 🔒
Arcs are integer values which exist within an OID’s hierarchy.
checked 🔒
Checked arithmetic helpers.
encoder 🔒
OID encoder with const support.
error 🔒
Error types
parser 🔒
OID string parser with const support.

Structs§

Arcs
Iterator over Arc values (a.k.a. nodes) in an ObjectIdentifier.
ObjectIdentifier
Object identifier (OID).

Enums§

Error
OID errors.

Traits§

AssociatedOid
A trait which associates an OID with a type.
DynAssociatedOid
A trait which associates a dynamic, &self-dependent OID with a type, which may change depending on the type’s value.

Type Aliases§

Arc
Type alias used to represent an “arc” (i.e. integer identifier value).
Result
Result type