Merging upstream version 1.70.0+dfsg2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 96 insertions, 0 deletions

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+# [RustCrypto]: Object Identifiers (OIDs)
+
+[![crate][crate-image]][crate-link]
+[![Docs][docs-image]][docs-link]
+[![Build Status][build-image]][build-link]
+![Apache2/MIT licensed][license-image]
+![Rust Version][rustc-image]
+[![Project Chat][chat-image]][chat-link]
+
+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][docs-link]
+
+## 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:
+
+```text
+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.:
+
+```rust
+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:
+
+* [Apache License, Version 2.0](http://www.apache.org/licenses/LICENSE-2.0)
+* [MIT license](http://opensource.org/licenses/MIT)
+
+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.
+
+[//]: # (badges)
+
+[crate-image]: https://buildstats.info/crate/const-oid
+[crate-link]: https://crates.io/crates/const-oid
+[docs-image]: https://docs.rs/const-oid/badge.svg
+[docs-link]: https://docs.rs/const-oid/
+[license-image]: https://img.shields.io/badge/license-Apache2.0/MIT-blue.svg
+[rustc-image]: https://img.shields.io/badge/rustc-1.57+-blue.svg
+[chat-image]: https://img.shields.io/badge/zulip-join_chat-blue.svg
+[chat-link]: https://rustcrypto.zulipchat.com/#narrow/stream/300570-formats
+[build-image]: https://github.com/RustCrypto/formats/workflows/const-oid/badge.svg?branch=master&event=push
+[build-link]: https://github.com/RustCrypto/formats/actions
+
+[//]: # (links)
+
+[RustCrypto]: https://github.com/rustcrypto
+[X.660]: https://www.itu.int/rec/T-REC-X.660