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Virgil Security Crypto Library for C
Introduction
This library is designed to be a small, flexible and convenient wrapper for a variety of crypto algorithms. So it can be used in a small microcontroller as well as in a high load server application. Also, it provides several custom hybrid algorithms that combine different crypto algorithms to solve common complex cryptographic problems in an easy way. This eliminates the requirement for developers to have strong cryptographic skills.
The library is available for different platforms and contains wrappers for other languages.
Features
The Virgil Security Crypto C library is decomposed into small libraries with specific purposes. A developer can freely choose a subset of libraries.
Library: Foundation
This library contains basic cryptographic algorithms and can be used as building blocks for complex solutions.
| Algorithm Purpose | Implementation details |
|---|---|
| Key Generation, PRNG | CTR_DRBG NIST SP 800-90A |
| Key Derivation | KDF1, KDF2, HKDF, PBKDF2 |
| Key Exchange | X25519, RSA, ECDH |
| Key Encapsulation Mechanism | Round5, ECIES-KEM |
| Hashing | SHA-2 (224/256/384/512) |
| Message Authentication Code | HMAC |
| Digital Signature | Ed25519, RSASSA-PSS, ECDSA, Falcon |
| Entropy Source | Linux, macOS /dev/urandom,<br>Windows CryptGenRandom() |
| Symmetric Algorithms | AES-256-GCM, AES-256-CBC |
| Encryption schemes | PBES2 |
| Elliptic Curves | Ed25519, Curve25519, secp256R1 |
| Post-quantum cryptography | Falcon, Round5 |
Library: PHE
The cryptographic background for the Password-Hardened Encryption (PHE) protocol that provides developers the technology to protect user passwords from offline attacks and render stolen passwords useless even if your database has been compromised. The service implementation can be found here.
Library: Pythia
The cryptographic background for the Pythia PRF Service.
Library: Ratchet
Implementation of the Double Ratchet Algorithm.
Platforms & languages
| Library | Platforms | Languages / Binaries |
|---|---|---|
| foundation | all | C, Swift, Java, JS, Python, Go, PHP |
| pythia | linux, macOS | C, Swift, Java, JS, Python, PHP |
| phe | all | C, PHP, Java, JS, Python, Go, PHP |
| ratchet | all | C, Swift, Java, JS, Python, Go |
Build from sources
Prerequisites
- Compiler:
gcc(version >= 4.8.2), orclang(version >= 3.6), ormsvc(version >= 14.0)
- Build tools:
cmake(version >= 3.12)python(version >= 3)python-protobuf
Build & Install
git clone https://github.com/VirgilSecurity/virgil-crypto-c.git
cd virgil-crypto-c
cmake -Bbuild -H.
cmake --build build
cmake --build build --target install
Run Benchmarks
cmake -DCMAKE_BUILD_TYPE=Release -DENABLE_BENCHMARKING=ON \
-DED25519_AMD64_RADIX_64_24K=ON -DED25519_REF10=OFF \
-Bbuild -H.
cmake --build build -- -j10
./build/benchmarks/foundation/bench
Support
Our developer support team is here to help you.
You can find us on Twitter or send us an email support@VirgilSecurity.com.
Also, get extra help from our support team on Slack.
License
BSD 3-Clause. See LICENSE for details.