dotnet-cryptography
dotnet-cryptography
Modern .NET cryptography covering hashing (SHA-256/384/512), symmetric encryption (AES-GCM), asymmetric cryptography (RSA, ECDSA), key derivation (PBKDF2, Argon2), and post-quantum algorithms (ML-KEM, ML-DSA, SLH-DSA) for .NET 10+. Includes TFM-aware guidance: what's available on net10.0 vs fallback strategies for net8.0/net9.0.
Out of scope: Secrets management and configuration binding -- see [skill:dotnet-secrets-management]. OWASP vulnerability categories and deprecated security patterns -- see [skill:dotnet-security-owasp]. Authentication/authorization implementation (JWT, OAuth, Identity) -- see [skill:dotnet-api-security] and [skill:dotnet-blazor-auth]. Cloud-specific key management (Azure Key Vault, AWS KMS) -- cloud epics. TLS/HTTPS configuration -- covered by ASP.NET Core middleware.
Cross-references: [skill:dotnet-security-owasp] for OWASP A02 (Cryptographic Failures) and deprecated pattern warnings, [skill:dotnet-secrets-management] for storing keys and secrets securely.
Scope Boundary
In scope: Algorithm selection, correct usage of System.Security.Cryptography APIs, key derivation, hashing for integrity, symmetric/asymmetric encryption, post-quantum cryptography, and deprecated algorithm warnings.
Not in scope: Key storage (use secrets management), TLS termination (infrastructure), authentication protocols (see [skill:dotnet-api-security]), cloud HSM/KMS services (cloud epics).
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