a.sign Client 1.3

a.sign Client by A-Trust GmbH is a desktop middleware application that enables secure digital signing and user authentication with A-Trust certificates, smart cards, and USB tokens. Developed by a qualified trust service provider, it bridges your hardware-based credentials with browsers and desktop applications so you can create legally binding electronic signatures, approve transactions, and access protected services without exposing private keys. The client manages PIN entry and cryptographic operations on the secure device, helping organizations and professionals meet stringent security and compliance requirements while streamlining everyday signing workflows.

Key capabilities:

• Creates advanced and qualified electronic signatures using A-Trust signature cards and tokens
• Integrates with web portals and desktop software through a local service and standard cryptographic interfaces
• Supports common use cases such as signing PDFs and forms, approving e-government transactions, and authorizing enterprise workflows
• Protects private keys with hardware-backed storage and a secure PIN dialog; cryptographic operations stay on the device
• Delivers a consistent end-user experience for certificate access and signing across supported applications

Ideal for:

• Businesses and professionals who need trusted, legally defensible electronic signatures
• Public-sector and regulated industries with high security and compliance demands
• Teams standardizing secure, hardware-backed signing across their organization

Note: Specific features and integrations may vary by version and operating environment.

a.sign Client is developed by A-Trust GmbH and is used by 14 users of Software Informer. The most popular versions of this product among our users are: 1.2 and 1.3. The names of program executable files are acLauncher.exe, ASignLauncher.exe, a-sign client.exe and Client.exe.