Certificate Encrypt & Sign
Encrypt and digitally sign PDF documents using certificates. Work with certificate files locally in your browser.
Select a PDF
Choose a PDF to place a wax seal and sign locally.
About This Tool
3D Wax-Seal & Certificate Cryptor provides military-grade security and premium physical-grade aesthetics for sensitive corporate files, degrees, or agreements.
Technically, it offers asymmetric public-key encryption: import a recipient's public key certificate (.cer/.crt) to lock the PDF stream; only the holder of the matching private key (.pfx) can decrypt it. It also generates standard PKCS#7 digital signatures to ensure document tamper-proof integrity.
Visually, we feature a 3D physical gold or red wax-seal stamp. When you sign, a beautifully rendered stamp descends with a satisfying mechanical sound, leaving a 3D wax seal with realistic normal-mapped height variations and wax run-offs on the page, surrounded by glowing cryptographic tracks.
How to Use
Upload PDF and Cert
Add your PDF and import your signing certificate (.pfx) or the recipient's public certificate (.cer).Place the 3D Stamp
Drag and locate the seal on the document preview, and pick a wax style (e.g., gold, crimson).Press and Sign
Click execute to watch the 3D wax-seal imprint ceremony, generating a physical-grade digital signature.Download Secured PDF
Save the output document, now cryptographically locked and stamped.
Use Cases
Diplomas and Certificates
Confidential Agreements
Official Press Releases
Frequently Asked Questions
Both. The system renders an incredibly realistic 3D wax imprint with normal-mapped depth (visual layer) and encodes an authentic, tamper-proof PKCS#7 cryptographic signature inside the PDF (data layer).
It is a passwordless encryption technique. You encrypt the file using the recipient's public key. The reader automatically searches for their local private certificate to decrypt the file seamlessly, ensuring robust security.
Yes. We provide multiple designs like the PDFCraft watermark or a Royal crest, and you can adjust the wax melting radius and normal-map indentation depth in the panel.