diff --git a/crypto/src/util/Arrays.cs b/crypto/src/util/Arrays.cs
index 6be94c543..32c56b8b5 100644
--- a/crypto/src/util/Arrays.cs
+++ b/crypto/src/util/Arrays.cs
@@ -613,6 +613,37 @@ namespace Org.BouncyCastle.Utilities
}
}
+ public static byte[] Concatenate(byte[] a, byte[] b, byte[] c, byte[] d)
+ {
+ if (a != null && b != null && c != null && d != null)
+ {
+ byte[] rv = new byte[a.Length + b.Length + c.Length + d.Length];
+
+ Array.Copy(a, 0, rv, 0, a.Length);
+ Array.Copy(b, 0, rv, a.Length, b.Length);
+ Array.Copy(c, 0, rv, a.Length + b.Length, c.Length);
+ Array.Copy(d, 0, rv, a.Length + b.Length + c.Length, d.Length);
+
+ return rv;
+ }
+ else if (d == null)
+ {
+ return Concatenate(a, b, c);
+ }
+ else if (c == null)
+ {
+ return Concatenate(a, b, d);
+ }
+ else if (b == null)
+ {
+ return Concatenate(a, c, d);
+ }
+ else
+ {
+ return Concatenate(b, c, d);
+ }
+ }
+
public static int[] Concatenate(int[] a, int[] b)
{
if (a == null)
|
