diff --git a/crypto/src/util/Arrays.cs b/crypto/src/util/Arrays.cs
index 37da3940f..e629fcf65 100644
--- a/crypto/src/util/Arrays.cs
+++ b/crypto/src/util/Arrays.cs
@@ -366,6 +366,36 @@ namespace Org.BouncyCastle.Utilities
return existing;
}
+ public static bool Contains(byte[] a, byte n)
+ {
+ for (int i = 0; i < a.Length; ++i)
+ {
+ if (a[i] == n)
+ return true;
+ }
+ return false;
+ }
+
+ public static bool Contains(short[] a, short n)
+ {
+ for (int i = 0; i < a.Length; ++i)
+ {
+ if (a[i] == n)
+ return true;
+ }
+ return false;
+ }
+
+ public static bool Contains(int[] a, int n)
+ {
+ for (int i = 0; i < a.Length; ++i)
+ {
+ if (a[i] == n)
+ return true;
+ }
+ return false;
+ }
+
public static void Fill(
byte[] buf,
byte b)
@@ -384,6 +414,42 @@ namespace Org.BouncyCastle.Utilities
return result;
}
+ public static byte[] Append(byte[] a, byte b)
+ {
+ if (a == null)
+ return new byte[] { b };
+
+ int length = a.Length;
+ byte[] result = new byte[length + 1];
+ Array.Copy(a, 0, result, 0, length);
+ result[length] = b;
+ return result;
+ }
+
+ public static short[] Append(short[] a, short b)
+ {
+ if (a == null)
+ return new short[] { b };
+
+ int length = a.Length;
+ short[] result = new short[length + 1];
+ Array.Copy(a, 0, result, 0, length);
+ result[length] = b;
+ return result;
+ }
+
+ public static int[] Append(int[] a, int b)
+ {
+ if (a == null)
+ return new int[] { b };
+
+ int length = a.Length;
+ int[] result = new int[length + 1];
+ Array.Copy(a, 0, result, 0, length);
+ result[length] = b;
+ return result;
+ }
+
public static byte[] Concatenate(byte[] a, byte[] b)
{
if (a == null)
@@ -397,6 +463,42 @@ namespace Org.BouncyCastle.Utilities
return rv;
}
+ public static byte[] Prepend(byte[] a, byte b)
+ {
+ if (a == null)
+ return new byte[] { b };
+
+ int length = a.Length;
+ byte[] result = new byte[length + 1];
+ Array.Copy(a, 0, result, 1, length);
+ result[0] = b;
+ return result;
+ }
+
+ public static short[] Prepend(short[] a, short b)
+ {
+ if (a == null)
+ return new short[] { b };
+
+ int length = a.Length;
+ short[] result = new short[length + 1];
+ Array.Copy(a, 0, result, 1, length);
+ result[0] = b;
+ return result;
+ }
+
+ public static int[] Prepend(int[] a, int b)
+ {
+ if (a == null)
+ return new int[] { b };
+
+ int length = a.Length;
+ int[] result = new int[length + 1];
+ Array.Copy(a, 0, result, 1, length);
+ result[0] = b;
+ return result;
+ }
+
public static byte[] Reverse(byte[] a)
{
if (a == null)
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