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GreenShield

Secures email and files with end-to-end encryption, signatures, automation, and post-quantum readiness.

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Overview

Future-proof communications with Post-Quantum Security

Eviden GreenShield protects email and files with end-to-end encryption and digital signatures within Microsoft Outlook and HCL Notes. The product is positioned for both classified government communication and highly secure enterprise communication. GreenShield VS addresses regulated government and classified industry environments and is approved for VS-NfD, NATO-restricted, and EU-restricted use. 
GreenShield Enterprise Suite targets companies, KRITIS operators, and regulated industries with S/MIME and OpenPGP, personal signatures, and fully automated workflow and certificate management. The GreenShield extension PQC ready adds post-quantum and composite signatures as well as PQC encryption using CRYSTALS-Dilithium and CRYSTALS-Kyber.

Key capabilities

  • End-to-end encryption for email and files
  • Digital signatures for integrity and identity assurance
  • Variants for classified and enterprise communication
  • Automated workflow and certificate management
  • Post-quantum and composite cryptography extension.

Secure communications platform for encrypted email and files, with classified and enterprise variants and PQC extension capabilities.

 

Key features

What sets GreenShield apart

Defense sovereign icon

End-to-end protection for content

Encrypts email and files end-to-end and uses digital signatures to guarantee message integrity.

The page states transport encryption protects transmission, while GreenShield protects the content itself.
 

Communication Security icon

Variant-based deployment model

Provides separate variants for classified government communication and highly secure enterprise communication.

GreenShield VS is positioned for VS-NfD, NATO-restricted, and EU-restricted use; Enterprise Suite targets KRITIS and regulated industries.
 

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PQC-ready communication security

Extends the platform with post-quantum and composite signatures plus PQC encryption.

The GreenShield Extension PQC Ready enables CRYSTALS-Dilithium and CRYSTALS-Kyber-based capabilities.

Benefits

End-to-End protection for digital communications

S

Stronger protection for sensitive communication

Protects email and file content against unauthorized access and supports tamper-proof communication with verifiable signatures.

B

Better fit for regulated environments

Offers dedicated variants for classified public-sector use and secure enterprise communications in KRITIS and regulated industries.

M

More future-proof cryptographic investment

PQC-readiness and automated certificate management help organizations prepare communication security for evolving cryptographic requirements.

Why Eviden

Why choose GreenShield

Securing sensitive information

  • Seamless integration: No training required – employees continue working as usual in Microsoft Outlook or HCL Notes
  • Includes automated workflow and certificate management in the enterprise variant
  • Offers PQC extension with composite signatures and PQC encryption algorithms.
     

Optional proof

Compliance proof: GreenShield VS is described as BSI-approved for VS-NfD, NATO-restricted, and EU-restricted use.
Standards leadership: GreenShield Enterprise Suite explicitly supports S/MIME and OpenPGP.

 

Proof & Evidence

Certifications: GreenShield VS is described as BSI-approved for VS-NfD, NATO-restricted, and EU-restricted use.
Compliance: GreenShield Enterprise Suite is described as compliance-ready for NIS2, ISO 27001, and DORA.

Architecture & Integration

Deployment model: Variant-based deployment with GreenShield VS, GreenShield Enterprise Suite, and GreenShield Extension PQC Ready.

Key integrations:

  • Email and file security workflows
  • Certificate lifecycle management (CLM) in Enterprise Suite
  • Personal signature processes
  • Classified and enterprise communication environments.

Standards supported: S/MIME, OpenPGP, CRYSTALS-Dilithium, CRYSTALS-Kyber.
 

FAQ

Frequently asked questions

Eviden GreenShield is an end-to-end protection solution for emails and files that combines encryption and digital signatures to secure sensitive communications and data.

Transport encryption only protects data while it is being transmitted. End-to-end protection secures the actual content, ensuring confidentiality, integrity, and authenticity throughout its lifecycle.

Eviden offers GreenShield VS for government and classified communications, GreenShield Enterprise Suite for businesses, KRITIS operators, and regulated industries, and the GreenShield PQC Ready Extension, which adds post-quantum cryptography capabilities.

GreenShield VS is approved for VS-NfD, NATO RESTRICTED, and EU RESTRICTED environments. GreenShield Enterprise Suite supports S/MIME and OpenPGP, includes personal signatures and automated certificate lifecycle management (CLM), and helps organizations meet NIS2, ISO 27001, and DORA requirements. The PQC Ready Extension adds PQC encryption as well as CRYSTALS-Dilithium and CRYSTALS-Kyber-based signatures and encryption.

Solution

GreenShield

Encryption and digital signatures with VS-NfD approval

Convenient, secure, approved: GreenShield software protects emails and files using state-of-the-art cryptography. The German Federal Office for Information Security (BSI) has approved GreenShield for classified information up to the VS-NfD level.
Anyone who wants to protect their data must secure their digital communications. This applies in particular to public authorities and their industry partners, who are subject to the relevant confidentiality regulations. GreenShield offers user-friendly email and file encryption and is one of the few solutions of its kind to be approved for the confidentiality levels VS-NfD, NATO-restricted, and EU-restricted.
GreenShield can not only encrypt data, but also sign it. As an add-in for Microsoft Outlook (Windows), HCL Notes (Windows), Explorer (Windows), and Nautilus (Ubuntu), GreenShield integrates seamlessly into the user’s email program or operating system. In addition to S/MIME, GreenShield also supports OpenPGP, making it an ideal solution for exchanging data with a wide range of communication partners in an interoperable and secure manner.

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Eviden GreenShield - Factsheet

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