Signature solutions for companies

Hash Signing (CSC)

Montage: A businessman sits at a table with a laptop in front of him; a symbol representing a document floats in front of him, which he signs with a pen.Montage: A businessman sits at a table with a laptop in front of him; a symbol representing a document floats in front of him, which he signs with a pen.

With A-Trust’s Hash Signing solution, you can seamlessly apply qualified electronic signatures (QES) to your documents — that are legally valid across Europe —without any media disruptions, via the CSC interface. The smooth integration of A-Trust’s QES allows you to efficiently digitize your document workflows or easily enhance your existing systems, platforms, and processes with secure, eIDAS-compliant digital signatures.

Hash Signing (CSC): Secure Digital Signatures, Seamlessly Integrated

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Seamless Integration

A-Trust’s qualified electronic signature (QES) is easily integrated into your existing systems, platforms, and processes via the Cloud Signature Consortium (CSC) API. It can also be used to fully digitize your document workflows. This enables easy access for the more than 4 million users that benefit of an A-Trust QES (e.g., ID Austria).

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eIDAS-Compliant Signatures

A-Trust’s Hash Signing (CSC) solution ensures the highest levels of technical and legal security. The QES is legally recognized across the EU and offers maximum traceability and legal certainty for documents that are digitally signed.

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Data Sovereignty & Compliance

During the signing process, the hash value is the only part that leaves your system — your documents remain entirely within your IT infrastructure. This guarantees full compliance with the strictest data protection and privacy standards.

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Efficient & Scalable

Streamline your signing processes with fully digital, disruption-free workflows. User-friendly features such as batch signing enhance speed and flexibility while conserving valuable resources.

FEATURESSIGNATUR-BOXHASH2SIGN SOFTWAREHASH-SIGNING (CSC API)
PDF-PREPERATIONpossiblepossiblenot possible
NO PROPRIETARY DATA CENTER NEEDEDpossiblepossiblepossible
ONLY THE HASH VALUE IS TRANSMITTEDnot possiblepossiblepossible
BATCH SIGNATUREpossiblepossiblepossible
OPTIONAL: TIMESTAMP & LONG TERM VALIDATIONpossiblepossiblepossible
OPTIONAL: QUALIFIED COMPANY SEALpossiblepossiblenot possible

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