Awesome
RustCrypto: Formats 
Cryptography-related format encoders/decoders (e.g. PKCS, PKIX)
Crates
| Name | crates.io | Docs | Description |
|---|---|---|---|
base16ct |  |  | Constant-time hexadecimal encoder/decoder |
base32ct |  |  | Constant-time Base32 encoder/decoder |
base64ct |  |  | Constant-time Base64 encoder/decoder with support for several variants |
cms |  |  | Implementation of the Cryptographic Message Syntax (CMS) as described in RFC 5652, RFC 5911, and in RFC 3274. |
const‑oid |  |  | Const-friendly implementation of the ISO/IEC Object Identifier (OID) standard as defined in ITU X.660 |
der |  |  | Decoder and encoder of the Distinguished Encoding Rules (DER) for Abstract Syntax Notation One (ASN.1) as described in ITU X.690 |
pem‑rfc7468 |  |  | Strict PEM encoding for PKIX/PKCS/CMS objects |
pkcs1 |  |  | Implementation of PKCS#1: RSA Cryptography Specifications Version 2.2 (RFC 8017) |
pkcs5 |  |  | Implementation of PKCS#5: Password-Based Cryptography Specification Version 2.1 (RFC 8018) |
pkcs8 |  |  | Implementation of PKCS#8(v2): Private-Key Information Syntax Specification (RFC 5208) and asymmetric key packages (RFC 5958) |
sec1 |  |  | SEC1: Elliptic Curve Cryptography encoding formats |
spki |  |  | X.509 Subject Public Key Info (RFC 5280 Section 4.1) describing public keys as well as their associated AlgorithmIdentifiers (i.e. OIDs) |
tai64 |  |  | TAI64(N) Timestamps |
tls_codec |  |  | TLS codec as defined in RFC 8446 Section 3 as well as some extensions required by MLS. |
x509-cert |  |  | X.509 Public Key Infrastructure Certificate format as described in RFC 5280 |
License
All crates 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.