Delete CH128 stream cipher algorithm (#1028)

Author: sgrampone

dotnet/src/extensions/SecurityAPI/dotnet/dotnetframework/GeneXusCryptography/Symmetric/SymmetricStreamCipher.cs

@@ -134,9 +134,6 @@ private IStreamCipher getCipherEngine(SymmetricStreamAlgorithm algorithm)
 				case SymmetricStreamAlgorithm.RC4:
 					engine = new RC4Engine();
 					break;
-				case SymmetricStreamAlgorithm.HC128:
-					engine = new HC128Engine();
-					break;
 				case SymmetricStreamAlgorithm.HC256:
 					engine = new HC256Engine();
 					break;

dotnet/src/extensions/SecurityAPI/dotnet/dotnetframework/GeneXusCryptography/SymmetricUtils/SymmetricStreamAlgorithm.cs

@@ -15,7 +15,7 @@ namespace GeneXusCryptography.SymmetricUtils
 	public enum SymmetricStreamAlgorithm
 	{
 #pragma warning disable CS1591 // Missing XML comment for publicly visible type or member
-		NONE, RC4, HC128, HC256, CHACHA20, SALSA20, XSALSA20, ISAAC
+		NONE, RC4, HC256, CHACHA20, SALSA20, XSALSA20, ISAAC
 #pragma warning restore CS1591 // Missing XML comment for publicly visible type or member
 	}
 
@@ -44,8 +44,6 @@ public static SymmetricStreamAlgorithm getSymmetricStreamAlgorithm(String symmet
 			{
 				case "RC4":
 					return SymmetricStreamAlgorithm.RC4;
-				case "HC128":
-					return SymmetricStreamAlgorithm.HC128;
 				case "HC256":
 					return SymmetricStreamAlgorithm.HC256;
 				case "CHACHA20":
@@ -74,8 +72,6 @@ public static String valueOf(SymmetricStreamAlgorithm symmetrcStreamAlgorithm, E
 			{
 				case SymmetricStreamAlgorithm.RC4:
 					return "RC4";
-				case SymmetricStreamAlgorithm.HC128:
-					return "HC128";
 				case SymmetricStreamAlgorithm.HC256:
 					return "HC256";
 				case SymmetricStreamAlgorithm.CHACHA20:
@@ -109,10 +105,6 @@ public static int[] getKeySize(SymmetricStreamAlgorithm algorithm, Error error)
 					keySize[1] = 40;
 					keySize[2] = 2048;
 					break;
-				case SymmetricStreamAlgorithm.HC128:
-					keySize[0] = 1;
-					keySize[1] = 128;
-					break;
 				case SymmetricStreamAlgorithm.HC256:
 				case SymmetricStreamAlgorithm.XSALSA20:
 					keySize[0] = 1;
@@ -148,7 +140,6 @@ internal static bool usesIV(SymmetricStreamAlgorithm algorithm, Error error)
 			switch (algorithm)
 			{
 				case SymmetricStreamAlgorithm.RC4:
-				case SymmetricStreamAlgorithm.HC128:
 				case SymmetricStreamAlgorithm.ISAAC:
 					return false;
 				case SymmetricStreamAlgorithm.HC256:

dotnet/src/extensions/SecurityAPI/test/dotnetframework/SecurityAPITest/Cryptography/Symmetric/TestStreamEncryption.cs

@@ -70,13 +70,6 @@ public void TestRC4()
 			testBulkAlgorithms("RC4", key1024, "");
 		}
 
-	/*	[Test]
-		public void TestHC128()
-		{
-			// HC128 key 128 bits, no nonce
-			testBulkAlgorithms("HC128", key128, IV128);
-		}*/
-
 		[Test]
 		public void TestHC256()
 		{