rustls · djc · Aug 5, 2023 · Aug 31, 2023 · Aug 31, 2023 · Sep 1, 2023
diff --git a/Cargo.lock b/Cargo.lock
diff --git a/Cargo.toml b/Cargo.toml
@@ -6,6 +6,8 @@ members = [
   "connect-tests",
   # tests and example code
   "examples",
+  # the pki-types library
+  "pki-types",
   # the main library and tests
   "rustls",
   # example of custom provider

diff --git a/pki-types/Cargo.toml b/pki-types/Cargo.toml
@@ -0,0 +1,20 @@
+[package]
+name = "rustls-pki-types"
+version = "0.2.1"
+edition = "2021"
+rust-version = "1.60"
+license = "MIT OR Apache-2.0"
+description = "Shared types for the rustls PKI ecosystem"
+documentation = "https://docs.rs/rustls-pki-types"
+homepage = "https://github.com/rustls/pki-types"
+repository = "https://github.com/rustls/pki-types"
+categories = ["network-programming", "data-structures", "cryptography"]
+
+[features]
+default = ["alloc"]
+alloc = []
+std = ["alloc"]
+
+[package.metadata.docs.rs]
+all-features = true
+rustdoc-args = ["--cfg", "docsrs"]
diff --git a/pki-types/LICENSE-APACHE b/pki-types/LICENSE-APACHE
@@ -0,0 +1,201 @@
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diff --git a/pki-types/LICENSE-MIT b/pki-types/LICENSE-MIT
@@ -0,0 +1,25 @@
+Copyright (c) 2023 Dirkjan Ochtman <dirkjan@ochtman.nl>
+
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diff --git a/pki-types/README.md b/pki-types/README.md
@@ -0,0 +1,40 @@
+# rustls-pki-types
+
+[![Build Status](https://github.com/rustls/pki-types/actions/workflows/ci.yml/badge.svg?branch=main)](https://github.com/rustls/pki-types/actions/workflows/ci.yml?query=branch%3Amain)
+[![Documentation](https://docs.rs/rustls-pki-types/badge.svg)](https://docs.rs/rustls-pki-types/)
+[![Chat](https://img.shields.io/discord/976380008299917365?logo=discord)](https://discord.gg/MCSB76RU96)
+
+This crate provides types for representing X.509 certificates, keys and other types as commonly
+used in the rustls ecosystem. It is intended to be used by crates that need to work with such X.509
+types, such as [rustls](https://crates.io/crates/rustls),
+[rustls-webpki](https://crates.io/crates/rustls-webpki),
+[rustls-pemfile](https://crates.io/crates/rustls-pemfile), and others.
+
+Some of these crates used to define their own trivial wrappers around DER-encoded bytes.
+However, in order to avoid inconvenient dependency edges, these were all disconnected. By
+using a common low-level crate of types with long-term stable API, we hope to avoid the
+downsides of unnecessary dependency edges while providing interoperability between crates.
+
+## Features
+
+- Interoperability between different crates in the rustls ecosystem
+- Long-term stable API
+- No dependencies
+- Support for `no_std` contexts, with optional support for `alloc`
+
+## DER and PEM
+
+Many of the types defined in this crate represent DER-encoded data. DER is a binary encoding of
+the ASN.1 format commonly used in web PKI specifications. It is a binary encoding, so it is
+relatively compact when stored in memory. However, as a binary format, it is not very easy to
+work with for humans and in contexts where binary data is inconvenient. For this reason,
+many tools and protocols use a ASCII-based encoding of DER, called PEM. In addition to the
+base64-encoded DER, PEM objects are delimited by header and footer lines which indicate the type
+of object contained in the PEM blob.
+
+The [rustls-pemfile](https://docs.rs/rustls-pemfile) crate can be used to parse PEM files.
+
+## Creating new certificates and keys
+
+This crate does not provide any functionality for creating new certificates or keys. However,
+the [rcgen](https://docs.rs/rcgen) crate can be used to create new certificates and keys.