id: crypto title: Crypto

customediturl: https://github.com/libra/libra/edit/master/crypto/crypto/README.md

Crypto

The crypto component hosts all the implementations of cryptographic primitives we use in Libra: hashing, signing, and key derivation/generation. The parts of the library usig traits.rs contain the crypto API enforcing type safety, verifiable random functions, EdDSA & BLS signatures.

Overview

Libra makes use of several cryptographic algorithms:

How is this module organized?

crypto/src ├── hash.rs # Hash function (SHA-3) ├── hkdf.rs # HKDF implementation (HMAC-based Extract-and-Expand Key Derivation Function based on RFC 5869) ├── macros/ # Derivations for SilentDebug and SilentDisplay ├── utils.rs # Serialization utility functions ├── lib.rs ├── bls12381.rs # Bls12-381 implementation of the signing/verification API in traits.rs ├── ed25519.rs # Ed25519 implementation of the signing/verification API in traits.rs ├── slip0010.rs # SLIP-0010 universal hierarchical key derivation for Ed25519 ├── x25519.rs # X25519 keys generation ├── test_utils.rs ├── traits.rs # New API design and the necessary abstractions ├── unit_tests/ # Tests └── vrf/ ├── ecvrf.rs # ECVRF implementation using curve25519 and SHA512 ├── mod.rs └── unit_tests # Tests