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Featured 07 May 2026

XML Signing and Document Handling in .NET — from Zero to Production

How to sign XML documents in .NET using System.Security.Cryptography.Xml, X.509 certificates, and RSA keys. Signature validation, detached vs. enveloped signatures, and the e-Invoice context — why XML signing matters in Romania.

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04 May 2026

mTLS in ASP.NET Core — mutual authentication through certificates

How to implement mutual TLS (mTLS) in ASP.NET Core: both parties authenticate using X.509 certificates. Kestrel configuration, reverse proxy (Nginx, Azure Application Gateway), certificate forwarding, and microservices scenarios.

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22 Apr 2026

Authentication with X.509 Certificate in ASP.NET Core

How X.509 client certificate authentication works, how to create and configure certificates for development and production, and how to implement validation in ASP.NET Core — no passwords, no tokens.

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17 Apr 2026

Integration with IdentityServer and Keycloak in ASP.NET Core

How to configure an external Authorization Server — IdentityServer or Keycloak — and correctly integrate it with an ASP.NET Core application. OAuth2 flows, token validation, scopes, and concrete setup steps.

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