ECDSA
Sign with curves, verify with math.
Generate a keypair, sign a message, and watch verification pass or fail when the text or signature changes.
Identity ECDSA Signatures WebCrypto
Quick guide
- Generate a P-256 keypair via WebCrypto.
- Sign any message; a base64 signature appears.
- Verify to see valid/invalid status; edit message to force failure.
Keypair
Generate & export public key
Sign & verify
Message → signature → check
Status: —
Try to change the message after signing it and then click Verify signature again to see how the signature becomes invalid, which proves that the original text has changed.
Curves, hashes, and trust receipts
- Click Generate keypair to create P-256 keys in your browser (private key never leaves).
- Type a message and click Sign message to produce a base64 signature.
- Click Verify signature to check it against the message and public key.
- Edit the message or signature and verify again to see failure.