A collection of Rust crates for encoding and decoding cryptography-related formats like DER, PEM, PKCS, and PKIX.
RustCrypto/formats is a collection of Rust crates that implement encoders and decoders for various cryptography-related formats. It provides libraries for handling DER, PEM, PKCS, PKIX, X.509 certificates, and other standards, enabling developers to work with cryptographic data structures securely and efficiently.
Rust developers building cryptographic applications, security tools, or protocols that require parsing, generating, or manipulating standard cryptographic formats.
It offers a comprehensive, standards-compliant, and security-focused toolkit for cryptographic format handling in Rust, with an emphasis on constant-time operations and strict adherence to RFCs and specifications.
Cryptography-related format encoders/decoders: DER, PEM, PKCS, PKIX
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Crates like base16ct, base32ct, and base64ct execute in constant time to mitigate timing attacks, as explicitly noted in the README for security-sensitive applications.
Implements DER, PEM, PKCS, and X.509 standards rigorously per RFCs, ensuring interoperability and correctness, as highlighted in the project philosophy.
Covers a wide range of formats from PKCS#1/5/8 to CMS and X.509, with each as a separate crate listed in the README, reducing bloat through modularity.
Each crate has dedicated documentation on docs.rs, providing clear references for developers working with complex cryptographic structures.
With 15+ separate crates, each with its own versioning, integrating and maintaining dependencies can be more complex than using a monolithic library.
Requires deep knowledge of cryptographic standards like ASN.1 and RFC specifications, making it less accessible for developers new to low-level format handling.
Focuses on low-level encoding/decoding without built-in utilities for common tasks like key management or certificate validation, forcing developers to assemble components manually.