Rust Cryptography Wrappers

This repository is parameter selection and lightweight wrapper around a number of Rust cryptographic libraries. Its purpose isn't to implement primitives, rather to unify the API surface of existing libraries; limited to the tiny subset needed by the Dark Bio project.

It contains the following crypto primitives and parameters:

• RSA via RSA2048,
• EdDSA via Ed25519,
• STREAM via ChaCha20 and Poly1305 at 16B tags and 64KiB chunks,
• HPKE via X25519, HKDF, SHA256, ChaCha20 and Poly1305 at dark-bio-v1: info prefix.

It contains the following satellite utilities:

• CBOR restricted to integer, text, bytes and array,
• RAND bytes generator with OS and WASM sources.

Feature flags

The entire library is hidden behind feature flags:

• rsa enables the RSA cryptography
• hpke enables the HPKE cryptography
• eddsa enables the EdDSA cryptography
• stream enables the STREAM cryptography
• cbor enables the type-restricted CBOR codecs
• rand enables the WASM friendly random generator

Some base features can be expanded with further flags:

• cert can expand hpke with certificate support, pulls in eddsa