cryptopp-modern

A maintained, modernized fork of Crypto++ with new algorithms and security improvements

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Overview

🌐 Website: cryptopp-modern.com

cryptopp-modern is an actively maintained fork of Crypto++ 8.9.0 featuring:

• ✨ BLAKE3 - Modern, fast cryptographic hash function
• ✨ Argon2 - RFC 9106 password hashing (Argon2d, Argon2i, Argon2id)
• 🔒 Security Patches - Marvin attack fix (CVE-2023-50979), ESIGN improvements
• 📅 Calendar Versioning - Clear release dates (YEAR.MONTH.INCREMENT format)
• 🔄 Active Maintenance - Regular updates and improvements
• ✅ Drop-in Compatible - Uses same CryptoPP namespace

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What's New in 2025.12.0

• 📁 Complete Project Reorganization - All 204 source files organized into categorized src/ directories
• ⚡ BLAKE3 SIMD Acceleration - SSE4.1/AVX2/NEON parallel chunk processing (~2500 MiB/s)
• 🔧 Modern CMake Build System - CMake 3.20+ with presets, find_package() support, and proper target exports
• 🔧 Build System Updates - Updated GNUmakefile, MSVC projects, and nmake for new structure
• 📦 Backward Compatible - Flat include/cryptopp/ structure maintained for drop-in replacement
• ✅ Multi-Platform CI/CD - 50+ build configurations tested on Windows, Linux, and macOS
• 📚 Comprehensive Documentation - CMAKE.md, GNUMAKEFILE.md, and GETTING_STARTED.md guides

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Quick Build

CMake (Recommended)

cmake --preset=default
cmake --build build/default
./build/default/cryptest.exe v

GNUmakefile

make -j$(nproc)
./cryptest.exe v

See CMAKE.md or GNUMAKEFILE.md for detailed build instructions.

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Documentation

• cryptopp-modern.com - Full API and algorithm documentation
• GETTING_STARTED.md - Quick start guide with code examples
• CMAKE.md - CMake build system documentation
• GNUMAKEFILE.md - GNUmakefile build system documentation
• ROADMAP.md - Development roadmap and future plans
• FORK.md - Relationship to upstream Crypto++
• Readme.txt - Complete algorithm list and instructions
• Install.txt - Detailed installation guide
• License.txt - Boost Software License 1.0

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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 for detailed explanation.

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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 for complete algorithm list.

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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:

// 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

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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

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License

Like the original Crypto++, this library uses:

• Compilation: Boost Software License 1.0
• Individual files: Public domain

See License.txt for details.

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Contact

• Issues: GitHub Issues
• Discussions: GitHub Discussions

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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

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Maintained by CoraleSoft