https://github.com/cryptopp-modern/cryptopp-modern
A maintained, modernized fork of Crypto++ with new algorithms and security improvements
https://github.com/cryptopp-modern/cryptopp-modern
argon2 blake3 cpp crypto cryptography cryptopp cryptopp-modern encryption-library
Last synced: about 2 months ago
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A maintained, modernized fork of Crypto++ with new algorithms and security improvements
- Host: GitHub
- URL: https://github.com/cryptopp-modern/cryptopp-modern
- Owner: cryptopp-modern
- License: other
- Created: 2025-11-14T08:47:05.000Z (5 months ago)
- Default Branch: main
- Last Pushed: 2026-01-31T11:21:54.000Z (2 months ago)
- Last Synced: 2026-01-31T22:31:37.121Z (2 months ago)
- Topics: argon2, blake3, cpp, crypto, cryptography, cryptopp, cryptopp-modern, encryption-library
- Language: C++
- Homepage: https://cryptopp-modern.com
- Size: 28.5 MB
- Stars: 7
- Watchers: 1
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- Changelog: History.txt
- License: LICENSE
- Security: Security.md
- Roadmap: ROADMAP.md
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README
# cryptopp-modern
**A maintained, modernized fork of Crypto++ with new algorithms and security improvements**
[](https://github.com/cryptopp-modern/cryptopp-modern/releases)
[](LICENSE)
---
## Overview
🌐 **Website:** [cryptopp-modern.com](https://cryptopp-modern.com)
**cryptopp-modern** is an actively maintained fork of [Crypto++ 8.9.0](https://github.com/weidai11/cryptopp) featuring:
- ✨ **BLAKE3** - Modern, fast cryptographic hash function
- ✨ **Argon2** - RFC 9106 password hashing (Argon2d, Argon2i, Argon2id)
- 🔒 **Security Patches** - Marvin attack fix (CVE-2023-50979), fault injection fix (CVE-2024-28285), ESIGN improvements
- 📅 **Calendar Versioning** - Clear release dates (YEAR.MONTH.INCREMENT format)
- 🔄 **Active Maintenance** - Regular updates and improvements
- ✅ **Drop-in Compatible** - Uses same `CryptoPP` namespace
---
## What's New in 2026.2.1
- 🔧 **DSA/ECDSA Fix** - Fixed invalid signature (r=0 or s=0) handling per FIPS 186-4
- 🔄 **Probabilistic Signatures** - Retry with fresh random k until valid (64-attempt cap)
- ⚠️ **Deterministic Signatures** - Abort with exception (API limitation)
See [RELEASE-2026.2.1.md](RELEASE-2026.2.1.md) for details and [Security.md](Security.md) for the full advisory.
---
## Quick Build
### CMake (Recommended)
```bash
cmake --preset=default
cmake --build build/default
./build/default/cryptest.exe v
```
### GNUmakefile
```bash
make -j$(nproc)
./cryptest.exe v
```
See [CMAKE.md](CMAKE.md) or [GNUMAKEFILE.md](GNUMAKEFILE.md) for detailed build instructions.
---
## Documentation
- **[cryptopp-modern.com](https://cryptopp-modern.com)** - Full API and algorithm documentation
- **[GETTING_STARTED.md](GETTING_STARTED.md)** - Quick start guide with code examples
- **[CMAKE.md](CMAKE.md)** - CMake build system documentation
- **[GNUMAKEFILE.md](GNUMAKEFILE.md)** - GNUmakefile build system documentation
- **[ROADMAP.md](ROADMAP.md)** - Development roadmap and future plans
- **[FORK.md](FORK.md)** - Relationship to upstream Crypto++
- **[Readme.txt](Readme.txt)** - Complete algorithm list and instructions
- **[Install.txt](Install.txt)** - Detailed installation guide
- **[LICENSE](LICENSE)** - Boost Software License 1.0
---
## Why Fork?
**Upstream Crypto++ Status:**
- Last release: 8.9.0 (October 1, 2023)
- Version encoding limitation (cannot represent 8.10.0)
- Slower development pace
**cryptopp-modern Goals:**
- Active maintenance and regular releases
- Modern algorithm support (BLAKE3, Argon2, future: post-quantum)
- Better code organization
- Modern CMake build system
- Calendar versioning
- Community-driven development
See [FORK.md](FORK.md) for detailed explanation.
---
## Features
### Cryptographic Algorithms
**Hash Functions:**
- SHA-2, SHA-3, BLAKE2b/s, **BLAKE3** ⭐
- MD5, RIPEMD, Tiger, Whirlpool, SipHash
**Password Hashing / KDF:**
- **Argon2 (d/i/id)** ⭐ RFC 9106
- PBKDF2, Scrypt, HKDF
**Symmetric Encryption:**
- AES, ChaCha20, Serpent, Twofish, Camellia, ARIA
- Modes: GCM, CCM, EAX, CBC, CTR, and more
**Public Key Cryptography:**
- RSA, DSA, ECDSA, Ed25519
- Diffie-Hellman, ECIES, ElGamal
**Message Authentication:**
- HMAC, CMAC, GMAC, Poly1305
See [Readme.txt](Readme.txt) for complete algorithm list.
---
## Migration from Crypto++ 8.9.0
**Good news:** Most code works unchanged!
### Compatible ✓
- All existing algorithms and APIs
- Same `CryptoPP` namespace
- Version checks: `#if CRYPTOPP_VERSION >= N`
### Changed ⚠️
- Version encoding: Now `YEAR*10000 + MONTH*100 + INCREMENT`
- Version parsing: Use `/10000` for year, `(n/100)%100` for month
**Example:**
```cpp
// Old (8.9.0)
const int major = CRYPTOPP_VERSION / 100; // Gets 8
// New (2025.11.0)
const int year = CRYPTOPP_VERSION / 10000; // Gets 2025
const int month = (CRYPTOPP_VERSION / 100) % 100; // Gets 11
```
---
## Contributing
Contributions are welcome! Areas where you can help:
- 🐛 Bug reports and fixes
- ✨ New algorithm implementations
- 📚 Documentation improvements
- 🧪 Tests and test vectors
- 🔧 Build system enhancements
If you're migrating from Crypto++ 8.9.0 and encounter any issues, please open an issue – migration feedback is especially valuable.
Please:
1. Fork the repository
2. Create a feature branch
3. Follow existing code style
4. Add tests for new features
5. Submit a pull request
---
## License
Like the original Crypto++, this library uses:
- **Compilation:** Boost Software License 1.0
- **Individual files:** Public domain
See [LICENSE](LICENSE) for details.
---
## Contact
- **Issues:** [GitHub Issues](https://github.com/cryptopp-modern/cryptopp-modern/issues)
- **Discussions:** [GitHub Discussions](https://github.com/cryptopp-modern/cryptopp-modern/discussions)
---
## Acknowledgments
**cryptopp-modern** builds upon the excellent work of:
- **Wei Dai** - Original Crypto++ creator and maintainer
- **The Crypto++ team** - All contributors to upstream Crypto++
- **BLAKE3 team** - Modern cryptographic hash design
- **Argon2 team** - Password hashing competition winner
---
**Maintained by [CoraleSoft](https://github.com/Coralesoft)**