Google Git
Sign in
android / platform / external / rust / crates / der / refs/heads/sdk-release
commit02ea1422d7509e739181fe2720ec3ff5107e550d[log] [tgz]
authorAndroid Build Coastguard Worker <[email protected]>Tue Sep 10 23:09:18 2024 +0000
committerAndroid Build Coastguard Worker <[email protected]>Tue Sep 10 23:09:18 2024 +0000
tree3e4db8f797445ba155beaa95bcbf148ff8297a99
parent57593461aae4976af240bdc98799dfd0ae2c16a6 [diff]
parent1f48b23c1dbd72b02115927ce29b5e6ace612a43 [diff]
Snap for 12349386 from 1f48b23c1dbd72b02115927ce29b5e6ace612a43 to sdk-release

Change-Id: Iab82b9ba2c90c3dbb7d7c936dbc6aecc5e2d6137
tree: 3e4db8f797445ba155beaa95bcbf148ff8297a99
  1. patches/
  2. src/
  3. tests/
  4. LICENSE ⇨ LICENSE-APACHE
  5. .cargo_vcs_info.json
  6. Android.bp
  7. Cargo.toml
  8. Cargo.toml.orig
  9. cargo2rulesmk.json
  10. CHANGELOG.md
  11. LICENSE-APACHE
  12. LICENSE-MIT
  13. METADATA
  14. MODULE_LICENSE_APACHE2
  15. OWNERS
  16. README.md
  17. rules.mk
README.md

RustCrypto: ASN.1 DER

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

Pure Rust embedded-friendly implementation of the Distinguished Encoding Rules (DER) for Abstract Syntax Notation One (ASN.1) as described in ITU X.690.

Documentation

About

This crate provides a no_std-friendly implementation of a subset of ASN.1 DER necessary for decoding/encoding the following cryptography-related formats implemented as crates maintained by the RustCrypto project:

  • pkcs1: RSA Cryptography Specifications
  • pkcs5: Password-Based Cryptography Specification
  • pkcs7: Cryptographic Message Syntax
  • pkcs8: Private-Key Information Syntax Specification
  • pkcs10: Certification Request Syntax Specification
  • sec1: Elliptic Curve Cryptography
  • spki: X.509 Subject Public Key Info
  • x501: Directory Services Types
  • x509: Public Key Infrastructure Certificate

The core implementation avoids any heap usage (with convenience methods that allocate gated under the off-by-default alloc feature).

The DER decoder in this crate performs checks to ensure that the input document is in canonical form, and will return errors if non-canonical productions are encountered. There is currently no way to disable these checks.

Features

  • Rich support for ASN.1 types used by PKCS/PKIX documents
  • Performs DER canonicalization checks at decoding time
  • no_std friendly: supports “heapless” usage
  • Optionally supports alloc and std if desired
  • No hard dependencies! Self-contained implementation with optional integrations with the following crates, all of which are no_std friendly:
    • const-oid: const-friendly OID implementation
    • pem-rfc7468: PKCS/PKIX-flavored PEM library with constant-time decoder/encoders
    • time crate: date/time library

Minimum Supported Rust Version

This crate requires Rust 1.65 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.