ECDSA Signature Verification - Elliptic Curve Authentication
Verify ECDSA digital signatures with elliptic curve public key cryptography. Authenticate messages, validate transactions, and ensure data integrity using modern ECDSA verification technology essential for blockchain, cryptocurrency, and secure communications.
ECDSA Signature Verification
Verify ECDSA digital signatures using an elliptic curve public key. ECDSA verification ensures message authenticity and integrity by validating that the signature was created with the corresponding private key.
Original Message
ECDSA Signature to Verify
ECDSA Public Key (PEM format)
About ECDSA Signature Verification
ECDSA (Elliptic Curve Digital Signature Algorithm) verification confirms that a digital signature was created with the private key corresponding to the provided public key. This ensures message authenticity and integrity.
ECDSA Signature Verification: Modern Digital Authentication
Verify digital signatures with ECDSA elliptic curve technology. ECDSA signature verification ensures message authenticity, data integrity, and non-repudiation using compact elliptic curve public keys. Essential for blockchain transaction validation, cryptocurrency security, smart contract authentication, and modern digital communications requiring fast, efficient verification.
Trust & Verification: ECDSA verification provides mathematical proof of signature authenticity without requiring access to private keys.
Why Use ECDSA Signature Verification?
- Blockchain Essential: Verify Bitcoin, Ethereum, and cryptocurrency transactions to ensure authenticity and prevent fraud.
- Compact Verification: Process smaller signatures faster than RSA while maintaining equivalent security levels.
- Mobile Optimized: Perfect for mobile apps, IoT devices, and bandwidth-constrained verification scenarios.
- Industry Standard: Compliant with FIPS 186-4, ANSI X9.62, IEEE 1363, and major cryptographic standards.
- Multi-Curve Support: Verify signatures from P-256, P-384, P-521, and secp256k1 elliptic curves.
- Authentication Guarantee: Mathematically prove message authenticity, integrity, and signer identity.
- Non-Repudiation: Prevent signers from denying they created valid signatures for legal and compliance purposes.
- Privacy Protection: All verification happens locally - no data is sent to external servers.
Frequently Asked Questions (FAQs)
1. How does ECDSA verification ensure security?
ECDSA verification uses mathematical properties of elliptic curves to prove signature authenticity without revealing private keys.
2. Can I verify blockchain transactions with this tool?
Yes, verify Bitcoin, Ethereum, and other cryptocurrency transactions. Use secp256k1 curve for Bitcoin compatibility.
3. What information do I need to verify an ECDSA signature?
You need the original message, the signature (r, s values), the public key, and the elliptic curve used.
4. Is signature verification data sent to any servers?
No, all verification happens locally in your browser. Your signatures and data never leave your device.
5. Can I verify smart contract signatures?
Yes, verify Ethereum smart contract signatures and other blockchain-based authentication mechanisms.
6. How do I know which elliptic curve was used?
Check the application documentation, key format, or try common curves like P-256 (general) or secp256k1 (Bitcoin).
7. What happens if signature verification fails?
Failed verification means the signature is invalid, the message was altered, or incorrect parameters were used.
8. Can I verify JWT tokens signed with ECDSA?
Yes, verify ES256, ES384, ES512 JWT tokens that use ECDSA signature algorithms for secure token authentication.
9. How fast is ECDSA verification compared to RSA?
ECDSA verification is typically faster than RSA, especially on mobile devices and embedded systems.
10. Can I verify signatures from different implementations?
Yes, ECDSA is standardized. Signatures from any compliant implementation can be verified regardless of the signing software.
11. What makes ECDSA signatures tamper-evident?
Any change to the message or signature will cause verification to fail, providing guaranteed tamper detection.
12. Can I verify multi-signature schemes?
Yes, verify threshold signatures and multi-signature schemes where multiple parties collaborate on signing.
13. How do I handle signature format differences?
ECDSA signatures can be in ASN.1 DER, raw bytes, or other formats. Convert to the expected format for verification.
14. Can I verify offline cryptocurrency transactions?
Perfect for cold storage verification! Verify transaction signatures offline before broadcasting to the network.
15. What hash functions work with ECDSA verification?
SHA-256, SHA-384, SHA-512, and other cryptographic hashes. Match the hash function used during signing.
16. How do I verify API request signatures?
Verify API request signatures to ensure they come from authorized sources and haven't been tampered with.
17. Can I verify signatures from mobile applications?
Yes, ECDSA is ideal for mobile signature verification due to its efficiency and compact signature size.
18. What legal value do verified ECDSA signatures have?
Verified ECDSA signatures provide strong evidence of authenticity and non-repudiation for legal proceedings.
19. Does the tool work offline?
Yes, after initial page load, all verification operations work completely offline for security and privacy.
20. Is this ECDSA verification tool free?
Yes, completely free for blockchain, educational, and professional use with no registration or limitations.
Conclusion
Our ECDSA Signature Verification tool provides essential authentication capabilities for modern digital security. Whether you're validating blockchain transactions, verifying API requests, or ensuring document authenticity, ECDSA verification offers the perfect combination of security, performance, and efficiency. The compact signatures and fast verification make ECDSA ideal for today's mobile and IoT environments while maintaining the highest security standards.