init commit

output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/Crmf/PKMacFactory.cs

@@ -0,0 +1,30 @@
+using Org.BouncyCastle.Asn1.Cmp;
+using Org.BouncyCastle.Asn1.X509;
+using Org.BouncyCastle.Crypto;
+using Org.BouncyCastle.Crypto.Parameters;
+using Org.BouncyCastle.Security;
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Crmf;
+
+internal class PKMacFactory : IMacFactory
+{
+	protected readonly PbmParameter parameters;
+
+	private readonly byte[] key;
+
+	public virtual object AlgorithmDetails => new AlgorithmIdentifier(CmpObjectIdentifiers.passwordBasedMac, parameters);
+
+	public PKMacFactory(byte[] key, PbmParameter parameters)
+	{
+		this.key = Arrays.Clone(key);
+		this.parameters = parameters;
+	}
+
+	public virtual IStreamCalculator CreateCalculator()
+	{
+		IMac mac = MacUtilities.GetMac(parameters.Mac.Algorithm);
+		mac.Init(new KeyParameter(key));
+		return new PKMacStreamCalculator(mac);
+	}
+}