rustls-pemfile

This is a basic parser for PEM-encodings commonly used for storing keys and certificates at rest.

It doesn't support reading encrypted keys: the cryptography standardised for this is typically very poor and doing so doesn't address a meaningful threat model.

See also: rustls-pki-types

The main function of this crate has been incorporated into rustls-pki-types. 2.2.0 maintains the existing public API for this crate, on top of this new implementation. This drops the dependency on the base64 crate, and allows for constant-time decoding of private keys.

This crate will continue to exist in its current form, but it is somewhat unlikely that the API will be extended from its current state.

Should you wish to migrate to using the new rustls-pki-types PEM APIs directly, here is a rough cheat-sheet:

Use case	Replace
File stream to CertificateDer iterator	rustls_pemfile::certs(io::BufRead) ➡️ CertificateDer::pem_reader_iter(io::Read)
File stream to one PrivateKeyDer	rustls_pemfile::private_key(io::BufRead) ➡️ PrivateKeyDer::from_pem_reader(io::Read)
File stream to one CertificateSigningRequestDer	rustls_pemfile::csr(io::BufRead) ➡️ CertificateSigningRequestDer::from_pem_reader(io::Read)
File stream to CertificateRevocationListDer iterator	rustls_pemfile::crls(io::BufRead) ➡️ CertificateRevocationListDer::pem_reader_iter(io::Read)
File stream to PrivatePkcs1KeyDer iterator	rustls_pemfile::rsa_private_keys(io::BufRead) ➡️ PrivatePkcs1KeyDer::pem_reader_iter(io::Read)
File stream to PrivatePkcs8KeyDer iterator	rustls_pemfile::pkcs8_private_keys(io::BufRead) ➡️ PrivatePkcs8KeyDer::pem_reader_iter(io::Read)
File stream to PrivateSec1KeyDer iterator	rustls_pemfile::ec_private_keys(io::BufRead) ➡️ PrivateSec1KeyDer::pem_reader_iter(io::Read)
File stream to SubjectPublicKeyInfoDer iterator	rustls_pemfile::public_keys(io::BufRead) ➡️ SubjectPublicKeyInfoDer::pem_reader_iter(io::Read)

Changelog

The detailed list of changes in each release can be found at https://github.com/rustls/pemfile/releases.

License

rustls-pemfile is distributed under the following three licenses:

• Apache License version 2.0.
• MIT license.
• ISC license.

These are included as LICENSE-APACHE, LICENSE-MIT and LICENSE-ISC respectively. You may use this software under the terms of any of these licenses, at your option.