Cryptographic/ecdsa library
🔐 ECDSA (Elliptic Curve Digital Signature Algorithm) Implementation
A production-ready implementation of the ECDSA digital signature algorithm used in Bitcoin and many other blockchain systems. This implementation provides secure digital signatures using elliptic curve cryptography with configurable curves.
Features:
- RFC 6979 compliant ECDSA implementation
- Support for secp256k1 curve (Bitcoin standard)
- Deterministic signature generation (RFC 6979)
- Optimized for performance with minimal memory allocation
- Comprehensive error handling and validation
- Thread-safe implementation suitable for concurrent environments
- Produces standard ECDSA signatures (r, s) values
Time complexity: O(log n) for signature generation and verification Space complexity: O(1) constant space usage
Example:
final signature = ECDSA.sign('Hello, World!', privateKey);
final isValid = ECDSA.verify('Hello, World!', signature, publicKey);
print('Signature valid: $isValid');
Classes
- ECDSA
- ECDSA digital signature algorithm implementation
- ECDSACurve
- ECDSA curve parameters (secp256k1)
- ECDSAKeyPair
- ECDSA key pair
- ECDSASignature
- ECDSA signature structure
- ECPoint
- Elliptic curve point