SFS - Secure File Signature

SFS - Secure File Signature is the new solution for electronically signing or verifying documents wherever you are and whenever you wish. It lets you create your own certificate to easily sign and verify all kinds of documents from the palm of your hand. Combining our secure and easy SecSign ID (two factor authentication) login process with our advanced electronic signature API (AdES, PAdES), SFS makes creating advanced electronic signatures as safe and simple as it can be.

Electronic signatures made simple:
- Create a SecSign ID or use an existing one to log in
- Create a certificate with all information you wish to be contained in your signatures
- Import a document from the files on your phone or share it to SFS from any other app
- Verify existing signature on file or
- Place your signature and share the signed file

This intuitive process allows you to quickly and comfortably sign documents with high quality electronic signatures. Advanced signatures created with SFS use PKI to make sure that changes to your document cannot go unnoticed. Any changes in the document invalidate the signature so that your recipient always knows if the file has been tampered with.

No hassle. No worries about data leaking. Fast, secure and easy to use.

Features:
- Signature verification
- eIDAS conform signatures
- Sign PDF files (PAdES)
- Sign images or other files (CAdES)
- Secure PKI login using fingerprint
- Easily manage all your signed files
- Upload files to our secure SecSign Portal
- Log in to the portal using SFS as a 2FA provider

FAQ:
- Why is my signature created with SFS marked as invalid in Adobe Acrobat?
-> Because Adobe does not recognized the issuer certificate.