flutter_ever_crypto 0.1.0

Flutter plugin for Ever Crypto - XChaCha20Poly1305 and Kyber1024 post-quantum cryptography

Changelog

All notable changes to the Flutter Ever Crypto plugin will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

0.1.0 - 2024-07-05

Added

• Initial release of Flutter Ever Crypto plugin
• XChaCha20Poly1305 authenticated encryption with extended nonce support
  • generateXChaChaKey() - Generate 256-bit keys
  • generateXChaChaNonce() - Generate 192-bit nonces
  • xchachaEncrypt() - Encrypt data with optional AAD
  • xchachaDecrypt() - Decrypt data with optional AAD
• Kyber1024 post-quantum key encapsulation mechanism
  • generateKyberKeyPair() - Generate 1024-bit key pairs
  • kyberEncapsulate() - Encapsulate shared secrets
  • kyberDecapsulate() - Decapsulate shared secrets
• FFI bindings for Rust ever-crypto library v0.1.0
• Cross-platform support (Android, iOS, Linux, macOS, Windows)
• Comprehensive test suite with unit and integration tests
• Memory-safe operations with automatic cleanup
• Proper error handling with EverCryptoException
• Complete example application demonstrating all features
• Hybrid encryption examples combining Kyber1024 + XChaCha20Poly1305

Technical Details

• Built on ever-crypto Rust library (published on crates.io)
• Uses chacha20poly1305 v0.10.1 for authenticated encryption
• Uses pqcrypto-kyber v0.8.1 for post-quantum cryptography
• FFI bridge with C-compatible functions
• Automatic memory management and secure cleanup
• Support for Additional Authenticated Data (AAD)

Security Features

• Post-quantum cryptography ready (Kyber1024)
• Authenticated encryption prevents tampering
• Extended nonce prevents reuse issues
• Secure random number generation
• Memory zeroization for sensitive data
• Type-safe API prevents misuse

Performance

• Optimized for both software and hardware implementations
• ~7 MB/s XChaCha20Poly1305 encryption/decryption
• ~0.4ms Kyber1024 key generation
• ~0.4-0.5ms Kyber1024 encapsulation/decapsulation

Documentation

• Comprehensive README with usage examples
• API documentation for all functions
• Security considerations and best practices
• Build instructions for all platforms
• Integration examples for real-world usage

[Unreleased]

Planned

• Publish to pub.dev
• CI/CD pipeline for automated testing
• Additional platform targets
• Performance optimizations
• Extended documentation