RustCrypto: PKCS#8 (Private Keys)

Pure Rust implementation of Public-Key Cryptography Standards (PKCS) #8: Private-Key Information Syntax Specification (RFC 5208).

Documentation

About PKCS#8

PKCS#8 is a format for cryptographic private keys, often containing pairs of private and public keys.

You can identify a PKCS#8 private key encoded as PEM (i.e. text) by the following:

-----BEGIN PRIVATE KEY-----

PKCS#8 private keys can optionally be encrypted under a password using key derivation algorithms like PBKDF2 and scrypt, and encrypted with ciphers like AES-CBC. When a PKCS#8 private key has been encrypted, it starts with the following:

-----BEGIN ENCRYPTED PRIVATE KEY-----

PKCS#8 private keys can also be serialized in an ASN.1-based binary format. The PEM text encoding is a Base64 representation of this format.

Supported Algorithms

This crate is implemented in an algorithm-agnostic manner with the goal of enabling PKCS#8 support for any algorithm.

That said, it has been tested for interoperability against keys generated by OpenSSL for the following algorithms:

• ECC (id-ecPublicKey)
• Ed25519 (id-Ed25519)
• RSA (id-rsaEncryption)
• X25519 (id-X25519)

Please open an issue if you encounter trouble using it with a particular algorithm, including the ones listed above or other algorithms.

Minimum Supported Rust Version

This crate requires Rust 1.71 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
• MIT license

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.