offnenp7s.de

offnenp7s.de is a web-based tool for opening and verifying P7S digital signature files. It allows users to view signature data and validate the authenticity of signed documents by comparing cryptographic hash values between the signature file and the original document. The service works entirely in the browser without uploading files to external servers, keeping your documents secure on your device.

Key features include free preview and signature data inspection with a free account, support for detached signatures (PKCS#7/CMS format), automatic hash verification, and the ability to identify document signatories. Users can upload both the .p7s signature file and the original document to confirm they match and view complete signature details including signer certificates and timestamps.

The tool is designed for anyone who needs to verify digitally signed documents, including email signatures (smime.p7s) and PDF signatures, with support for various platforms including mobile devices and desktop browsers.