# Certificate-Based Signatures

> Sign PDF documents with X.509 certificates: requirements, DigitalSignature, PFX data, the Windows certificate store, Azure Key Vault and certificate checks.

- **Product:** TX Text Control .NET Server
- **Section:** Documentation
- **Kind:** Topic
- **Path:** TX Text Control .NET Server > Digital Signatures > Certificate-Based Signatures
- **Web URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/digital-signatures/certificate-based/
- **LLMs URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/digital-signatures/certificate-based/llms.txt
- **LLMs-Full URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/digital-signatures/certificate-based/llms-full.txt

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## On This Page

- [What a Signing Certificate Needs](https://docs.textcontrol.com/tx-text-control-dotnet-server/digital-signatures/certificate-based/#what-a-signing-certificate-needs)
- [How TX Text Control Takes the Certificate](https://docs.textcontrol.com/tx-text-control-dotnet-server/digital-signatures/certificate-based/#how-tx-text-control-takes-the-certificate)
- [Load the Certificate in ASP.NET Core](https://docs.textcontrol.com/tx-text-control-dotnet-server/digital-signatures/certificate-based/#load-the-certificate-in-asp-net-core)
- [Load the Certificate From the Windows Certificate Store](https://docs.textcontrol.com/tx-text-control-dotnet-server/digital-signatures/certificate-based/#load-the-certificate-from-the-windows-certificate-store)
- [Load the Certificate From Azure Key Vault](https://docs.textcontrol.com/tx-text-control-dotnet-server/digital-signatures/certificate-based/#load-the-certificate-from-azure-key-vault)
- [Check a Certificate Before Signing](https://docs.textcontrol.com/tx-text-control-dotnet-server/digital-signatures/certificate-based/#check-a-certificate-before-signing)
- [Next Steps](https://docs.textcontrol.com/tx-text-control-dotnet-server/digital-signatures/certificate-based/#next-steps)

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## Nearby

- **Previous:** [Signing PDF Documents](https://docs.textcontrol.com/tx-text-control-dotnet-server/digital-signatures/signing/llms.txt)
- **Next:** [Signature Fields](https://docs.textcontrol.com/tx-text-control-dotnet-server/digital-signatures/signature-fields/llms.txt)