CryptoHives.Foundation.Security.Cryptography 0.6.101

.NET 8.0 This package targets .NET 8.0. The package is compatible with this framework or higher. .NET Standard 2.0 This package targets .NET Standard 2.0. The package is compatible with this framework or higher. .NET Framework 4.6.2 This package targets .NET Framework 4.6.2. The package is compatible with this framework or higher. 
dotnet add package CryptoHives.Foundation.Security.Cryptography --version 0.6.101
                    


                    

                
NuGet\Install-Package CryptoHives.Foundation.Security.Cryptography -Version 0.6.101
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="CryptoHives.Foundation.Security.Cryptography" Version="0.6.101" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="CryptoHives.Foundation.Security.Cryptography" Version="0.6.101" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="CryptoHives.Foundation.Security.Cryptography" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add CryptoHives.Foundation.Security.Cryptography --version 0.6.101
                    


                    

                
#r "nuget: CryptoHives.Foundation.Security.Cryptography, 0.6.101"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package CryptoHives.Foundation.Security.Cryptography@0.6.101
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=CryptoHives.Foundation.Security.Cryptography&version=0.6.101
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=CryptoHives.Foundation.Security.Cryptography&version=0.6.101
                    


                            Install as a Cake Tool

πŸ›‘οΈ CryptoHives Open Source Initiative 🐝

An open, community-driven collection of cryptography and performance libraries for the .NET ecosystem, maintained by The Keepers of the CryptoHives.

πŸ” CryptoHives.Foundation.Security.Cryptography

NuGet Tests

Fully managed, OS-independent implementations of hash, MAC, KDF, cipher, and post-quantum KEM algorithms for .NET, written directly from NIST/RFC/ISO specifications and checked against official test vectors.

No OS crypto dependency means deterministic results on every platform. Where the hardware supports it, intrinsics are used automatically β€” AES-NI, PCLMULQDQ/VPCLMULQDQ, SSE2, SSSE3, AVX2 and AVX-512 on x86/x64; ARM AES, ARM SHA-1/SHA-2, PMULL and NEON on Arm64.

πŸ“₯ Installation

dotnet add package CryptoHives.Foundation.Security.Cryptography

✨ Key Features

  • OS-independent β€” identical results on Windows, Linux, macOS, and anywhere else .NET runs
  • Standards-based β€” implemented from NIST, RFC, and ISO specifications; validated against official test vectors
  • Hardware-accelerated β€” automatic dispatch across AES-NI/AVX2/AVX-512 and the Arm64 crypto and NEON paths, with a scalar fallback always available
  • Allocation-free hot paths β€” Span<byte>-based APIs, friendly to stackalloc
  • XOF streaming β€” IExtendableOutput (Absorb / Squeeze / Reset) on all XOF algorithms
  • HashAlgorithm compatible β€” drop-in for anything consuming System.Security.Cryptography.HashAlgorithm
  • Broad algorithm coverage β€” SHA-2/3, Keccak, SHAKE, BLAKE2/3, Ascon, regional ciphers, and more

🧬 Supported Algorithms

Family Algorithms
SHA-2 SHA-224, SHA-256, SHA-384, SHA-512, SHA-512/224, SHA-512/256
SHA-3 SHA3-224, SHA3-256, SHA3-384, SHA3-512
Keccak Keccak-256, Keccak-384, Keccak-512 (Ethereum-compatible)
SHAKE / cSHAKE SHAKE128, SHAKE256, cSHAKE128, cSHAKE256
TurboSHAKE / KT TurboSHAKE128, TurboSHAKE256, KT128, KT256
ParallelHash (SP 800-185) ParallelHash128, ParallelHash256
BLAKE BLAKE2b, BLAKE2s (SIMD-accelerated), BLAKE3
Ascon Ascon-Hash256, Ascon-XOF128 (NIST SP 800-232 lightweight)
Regional hash SM3, Streebog, Kupyna, LSH, Whirlpool, RIPEMD-160
Legacy SHA-1, MD5, HMAC-SHA-1, HMAC-MD5 (backward compatibility only)
MAC HMAC-SHA-256/384/512, HMAC-SHA3-256/384/512, AES-CMAC, AES-GMAC, Poly1305, KMAC128/256, BLAKE2/3 keyed
Cipher (AEAD) AES-GCM (128/192/256), AES-CCM (128/192/256), ChaCha20-Poly1305, XChaCha20-Poly1305, Ascon-AEAD128
Cipher (block/stream) AES-128/192/256 (ECB/CBC/CTR), ChaCha20
Cipher (regional) SM4, ARIA, Camellia, Kuznyechik, Kalyna (128/256/512), SEED
KDF HKDF, KBKDF, ConcatKDF, PBKDF2
Post-quantum KEM ML-KEM-512, ML-KEM-768, ML-KEM-1024 (FIPS 203)

πŸ’‘ Quick Examples

Allocation-Free Hash (Blake3)

using CryptoHives.Foundation.Security.Cryptography.Hash;

using var blake3 = Blake3.Create();
Span<byte> hash = stackalloc byte[32];
blake3.TryComputeHash(data, hash, out _);

XOF Streaming (Shake256)

using CryptoHives.Foundation.Security.Cryptography.Hash;

// Variable-length output via IExtendableOutput
using var shake = Shake256.Create(outputBytes: 64);
shake.Absorb(context);
shake.Absorb(message);

Span<byte> output = stackalloc byte[64];
shake.Squeeze(output);
shake.Reset(); // Reuse the instance

Keyed Hash / MAC (HMAC-SHA-256)

using CryptoHives.Foundation.Security.Cryptography.Mac;

using var hmac = new HmacSha256(key);
Span<byte> tag = stackalloc byte[32];

hmac.Update(message);      // call as often as needed
hmac.Finalize(tag);        // writes the 32-byte tag
hmac.Reset();              // reuse the instance for the next message

Authenticated Encryption (AES-GCM)

using CryptoHives.Foundation.Security.Cryptography.Cipher;
using System.Security.Cryptography;   // for CryptographicException

using var aesGcm = new AesGcm256(key);

// Encrypt
Span<byte> ciphertext = new byte[plaintext.Length];
Span<byte> tag        = stackalloc byte[16];
aesGcm.Encrypt(nonce, plaintext, ciphertext, tag, associatedData);

// Decrypt β€” returns false (and clears `recovered`) if tag verification fails;
// it does not throw. Always check the result before trusting the output.
Span<byte> recovered = new byte[ciphertext.Length];
if (!aesGcm.Decrypt(nonce, ciphertext, tag, recovered, associatedData))
{
    throw new CryptographicException("Authentication failed.");
}

Post-Quantum Key Encapsulation (ML-KEM)

MLKem and MLKemAlgorithm carry the same names and the same member signatures as System.Security.Cryptography.MLKem from .NET 10, so switching to the managed implementation is a one-line change β€” swap the using, and everything downstream compiles unchanged:

-using System.Security.Cryptography;   // .NET 10 only, and only where the OS provides ML-KEM
+using CryptoHives.Foundation.Security.Cryptography.Kem;

using CryptoHives.Foundation.Security.Cryptography.Kem;

// MLKem.IsSupported is always true here: no OS or hardware dependency,
// on every target framework down to net462.
using var receiver = MLKem.GenerateKey(MLKemAlgorithm.MLKem768);
byte[] encapsulationKey = receiver.ExportEncapsulationKey();

// Sender: encapsulate a shared secret for the receiver.
using var sender = MLKem.ImportEncapsulationKey(MLKemAlgorithm.MLKem768, encapsulationKey);
sender.Encapsulate(out byte[] ciphertext, out byte[] senderSecret);

// Receiver: recover the same shared secret.
byte[] receiverSecret = receiver.Decapsulate(ciphertext);

Both the allocating overloads above and the allocation-free span overloads (Encapsulate(Span<byte>, Span<byte>), Decapsulate(ReadOnlySpan<byte>, Span<byte>)) are available, matching the in-box type.

Keys are validated on import per FIPS 203 Β§7.2/Β§7.3, decapsulation uses constant-time implicit rejection, and all three parameter sets are verified against the official NIST ACVP test vectors plus BouncyCastle and .NET 10 MLKem interop tests.

Not yet implemented: the PKCS#8, SubjectPublicKeyInfo and PEM import/export members (ImportPkcs8PrivateKey, ExportSubjectPublicKeyInfo, ImportFromPem, …). Raw key and seed import/export is complete. See the KEM roadmap.

cSHAKE β€” Domain-Separated XOF

using CryptoHives.Foundation.Security.Cryptography.Hash;

using var cshake = CShake128.Create(
    outputBytes: 32,
    functionName: "MyApp"u8.ToArray(),
    customization: "v1"u8.ToArray());

cshake.Absorb(input);
Span<byte> derived = stackalloc byte[32];
cshake.Squeeze(derived);

πŸ“š Documentation

Resource Link
Full package documentation cryptohives.github.io/Foundation/packages/security/cryptography
Hash algorithms guide cryptohives.github.io/…/hash-algorithms
Cipher algorithms guide cryptohives.github.io/…/cipher-algorithms
XOF mode guide cryptohives.github.io/…/xof-mode
Benchmarks (interactive dashboard) cryptohives.github.io/…/benchmarks
MAC algorithms guide cryptohives.github.io/…/mac-algorithms
API reference cryptohives.github.io/…/api/…Cryptography.Hash
Source repository github.com/CryptoHives/Foundation

🚨 Security Policy

Every algorithm is implemented from its published specification and validated against official test vectors. Public APIs are designed assuming hostile input.

If you discover a vulnerability, please don't open a public issue β€” follow the process on the CryptoHives Security Page instead.

βš–οΈ License

MIT β€” Β© 2026 The Keepers of the CryptoHives

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 was computed.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 is compatible.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 is compatible. 
.NET Framework net461 was computed.  net462 is compatible.  net463 was computed.  net47 was computed.  net471 was computed.  net472 is compatible.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

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Version Downloads Last Updated
0.6.101 196 9/1/2026
0.6.79 302 8/12/2026
0.6.51 246 8/1/2026
0.6.21 273 7/4/2026
0.5.34-preview 645 6/2/2026
0.5.21-preview 178 5/2/2026
0.5.13-preview 134 4/2/2026
0.4.21-preview 129 3/1/2026
0.4.11-preview 131 2/14/2026
0.3.19-preview 133 1/26/2026

https://github.com/CryptoHives/Foundation/blob/main/releases/0.6.101.md