Initial Commit

iTechSharp/srcbc/cms/PKCS5Scheme2PBEKey.cs

@@ -0,0 +1,35 @@
+using System;
+
+using Org.BouncyCastle.Crypto;
+using Org.BouncyCastle.Crypto.Generators;
+using Org.BouncyCastle.Crypto.Parameters;
+
+namespace Org.BouncyCastle.Cms
+{
+	public class Pkcs5Scheme2PbeKey
+		: CmsPbeKey
+	{
+		public Pkcs5Scheme2PbeKey(
+			string	password,
+			byte[]	salt,
+			int		iterationCount)
+			: base(password, salt, iterationCount)
+		{
+		}
+
+		internal override KeyParameter GetEncoded(
+			string algorithmOid)
+		{
+			Pkcs5S2ParametersGenerator gen = new Pkcs5S2ParametersGenerator();
+
+			gen.Init(
+				PbeParametersGenerator.Pkcs5PasswordToBytes(this.Password),
+				this.Salt,
+				this.IterationCount);
+
+			return (KeyParameter) gen.GenerateDerivedParameters(
+				algorithmOid,
+				CmsEnvelopedHelper.Instance.GetKeySize(algorithmOid));
+		}
+	}
+}