T4 PDF Digital Signatures AATL
Our digital signatures are automatically trusted by Adobe Acrobat Sign
T4 Pdf Digital Signatures Aatl
Our digital signatures are automatically trusted by Adobe Acrobat Sign. Advanced and Qualified Signatures / Seals
Adobe Acrobat Sign
Digital Signatures not only confirm the identity of the signer but also hold legal validity in courts across different jurisdictions. In the realm of paper-based transactions, two significant issues arise: 1. The susceptibility of signatures to forgery 2. The potential for document content alteration after the application of ink signatures.
Advanced signatures or seals are provided by a Trusted Service Provider (TSP) and have identity vetting. Whereas, a qualified certificate must be issued by a Qualified Trust Service Provider (QTSP) and generated using a Qualified Signature Creation Device (QSCD), supported by the highest level of identity vetting in accordance with eIDAS regulations.

Cloud Provider

AATL Provider

USB Token

PDF Application

Source of Trust

PDF Signing Software

Trusted PDFs

Reduced Cost

USB Token
Features

Configurable Signature Appearance

Flexible integrations

Designed to Suit Your Needs
- Globally Trusted 100%
- ETSI Compliant 100%
- Secured with FIPS 140-2 Level 3 HSM 100%
- Adobe Acrobat Trusted List program (AATL) 100%
Ready to Implement AATL Digital Signatures?
DSS Signing Server by T4trust
Unleash Trust Uninturrupted
T4 Signing Service is a server software appliance for managing all aspects of digital signing of files and documents as defined in the main international standards like ETSI, ISO, W3C, eIDAS, etc.
Revolutionize Contract Signing with Digital Signatures
Integrity – Efficiency – Security
In the era of digital transformation, where mundane paperwork is a thing of the past, prepare yourself for an extraordinary experience with our unparalleled online contract signing solution. This isn’t just about e-signing or electronic signatures; it’s about the power of digital signatures

Multiple Signing Modes

Sign anytime, anywhere

Multiple Workflows

Package Signing

Cross Platform, Diverse Deployments

Standard & Compliant

Configurable Signature Appearance

Timestamping

Invoice Signing

Bulk "Automated" Signing

Long-Term Validation

PKI Interoperability
Timestamp Server Authority (TSA)
Accuracy, Integrity, Trustworthiness
Proving time is important in high valued transactions and critical for businesses creating digital signatures for long-term perseverance. Without cryptographic timestamps, digital signatures can’t be trusted as they cannot be accepted in long term. A Timestamp server (also called as Timestamp Authority or TSA as short) provides proof of data existence at a particular point in time using cryptography.
A Timestamp Authority acts as a pivotal role ensuring all of the cryptographic objects identified during digital signature creation remains valid be it digital certificates, CRL or OCSP. This is done by embedding RFC 3161 based cryptographic timestamps inside business documents or transactions. Digital signature standards from ETSI or IETF now require cryptographic timestamps to be embedded ensuring long term storage and archiving.
Core Features
Features You Get From Our Tsa
Complexity creates confusion and bound to create operator mistakes. With developer and admin friendly interfaces, TSA can be deployed, integrated & tested in far less time what others offer.

Support any HSM & CAs
Quickly integrates with your existing HSMs over PKCS#11. Some of these are: – Entrust nShield – Thales Luna & Protect Server – Utimaco Cryptoserver – Microsoft Azure Key Vault – AWS HSM etc. Environments which doesn’t require HSMs, can still use software based cryptographic keystores. Timestamp certificates can be certified with your existing CAs for quick import and usage.

Proactive Alerts & Troubleshooting

Multiple Workflows

NTP Aware

Cross Platform, Diverse Deployments

