PGP Bericht Ondertekenen
Maak digitale handtekeningen voor tekstberichten met PGP.
Overview
PGP Sign Message lets you create a cryptographic digital signature for any text message using your PGP or GPG private key — outputting a standard ASCII-armored .asc signed message ready to share or publish. Because signing uses your private key and passphrase, privacy is critical: everything runs locally in the browser using the Web Cryptography API, so your key material is never transmitted to any server. The resulting signature lets anyone with your public key independently verify that the message came from you and has not been altered since you signed it.
Common Use Cases
- Authenticate Written Communications — Developers, journalists, and legal professionals sign statements or declarations so recipients can verify authorship and detect any tampering.
- Sign Release Announcements — Open-source maintainers sign changelog text or version announcements with their well-known GPG key so users can confirm legitimacy before acting on the release.
- Prove Document Integrity — Contractors and freelancers sign plaintext contracts or invoices to create a tamper-evident record that both parties can later verify against the original.
- Establish Identity on Forums — Users paste a signed challenge message to prove ownership of a PGP key listed in a public keyserver profile, without sharing the private key or passphrase with any third party.
- Offline Signing Without GPG Installed — Anyone who needs a quick PGP-signed output on a machine without GPG or Kleopatra installed can use this tool directly in the browser with no software download.
How It Works
Import Your Private Key
Upload or paste your PGP private key and enter the passphrase to unlock it for signing.
Enter Message to Sign
Type or paste the text message you want to digitally sign to prove its authenticity.
Generate Signed Message
The tool creates a digital signature using your private key and outputs the signed message for sharing.
