Overview
The webcrypto package provides a cross-platform implementation of the Web Cryptography API for Flutter, enabling secure cryptographic operations such as key generation, encryption, decryption, and digital signatures across Android, iOS, Web, macOS, Windows, and Linux. It offers a consistent interface that mirrors browser-based Web Crypto APIs, making it easier to implement secure data handling in Flutter applications. The package is particularly useful for apps requiring strong security features without platform-specific code. It is maintained by Google and open-sourced on GitHub.
Use cases
- Secure data encryption
- Digital signature verification
- Key management
- Cross-platform cryptography
- Secure token handling
Key features
- Cross-platform compatibility
- Matches Web Crypto API specification
- Supports symmetric and asymmetric cryptography
- Open-source and maintained by Google
- No native code required
Suitable for
- Apps needing secure data storage
- Authentication systems
- Secure communication protocols
- Privacy-focused applications
- Developers familiar with Web Crypto APIs
Considerations
- Requires understanding of cryptographic concepts
- Not suitable for high-performance crypto-heavy workloads
- Depends on Dart's async model
- Limited to standard Web Crypto algorithms
- May require additional validation for production use