エンコーダー＆暗号化
JWT署名者 (Pro)
All algorithms — HS / RS / ES / PS / EdDSA.
Runs in your browser
編集者注
Understanding · Signed JSON, in three base64 chunks.
この詳細な解説章は現在、英語版のみで提供されています。上の変換ツールはあなたの言語で動作しますが、長文の解説記事はまだ翻訳されていません。
よくある質問
Quick answers.
›Which signing algorithms are supported?
The tool supports symmetric signing (HS256, HS384, HS512) and asymmetric signing including RSA (RS/PS), Elliptic Curve (ES), and Edwards-curve (EdDSA/Ed25519).
›Are my private keys secure?
Yes. All signing happens locally on your device using the browser's native Web Crypto API. Your private keys and secrets never leave your browser.
›What happens if I use an invalid key format?
The tool validates your key against the selected algorithm. For asymmetric algorithms, ensure your key is in a supported format like PEM or JWK.
›Can I add custom headers or claims?
Yes. You can edit the Header and Payload JSON objects directly before signing to include standard claims like `exp` or custom application data.
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