pem-rs

pem-rs is a Rust library that provides functionality for parsing and encoding PEM (Privacy-Enhanced Mail) formatted data, which is commonly used for storing cryptographic keys, certificates, and other sensitive information. It offers a reliable and type-safe way to handle PEM files in Rust applications, making it essential for developers working with cryptography, TLS/SSL, and secure communications.

Key Features

• PEM Parsing — Extracts PEM-encoded data from strings or files, handling the standard -----BEGIN and -----END delimiters.
• Tag Extraction — Retrieves the tag (e.g., "RSA PRIVATE KEY") from parsed PEM structures for easy identification.
• PEM Encoding — Encodes raw data into PEM format with appropriate headers and footers.
• Error Handling — Provides comprehensive error types for robust handling of malformed or invalid PEM data.
• No Dependencies — A lightweight library with minimal dependencies, focusing on core PEM functionality.

Philosophy

The library emphasizes simplicity, correctness, and zero-copy operations where possible, aligning with Rust's performance and safety principles while providing a straightforward API for common PEM operations.