Split a byte array at a delimiter

Question

I\'m having a bit of an issue and, the other questions here didn\'t help me much.

I am a security student and I am trying to write a crypter for a project. For those

Answer 1

Here's mine. It only does the split once though. I made no attempt at making it performant.

public static byte[][] Split(this byte[] composite, byte[] seperator)
{
    bool found = false;

    int i = 0;
    for (; i < composite.Length - seperator.Length; i++)
    {
        var compositeView = new byte[seperator.Length];
        Array.Copy(composite, i, compositeView, 0, seperator.Length);

            found = compositeView.SequenceEqual(seperator);
        if (found) break;
    }

    if(found == false)
    {
        return null;
    }

    var component1Length = i;
    var component1 = new byte[component1Length];

    var component2Length = composite.Length - seperator.Length - component1Length;
    var component2 = new byte[component2Length];
    var component2Index = i + seperator.Length;

    Array.Copy(composite, 0, component1, 0, component1Length);
    Array.Copy(composite, component2Index, component2, 0, component2Length);

    return new byte[][]
    {
        component1,
        component2
    };
}

tested (partially):

byte[] b1 = new byte[] { 1, 2, 3, 4, 1, 1, 5 };
byte[] b2 = new byte[] { 1, 1 };
var parts1 = b1.Split(b2); // [1,2,3,4],[5]

byte[] b3 = new byte[] { 1, 1, 3, 4, 4, 1, 5 };
byte[] b4 = new byte[] { 1, 1 };
var parts2 = b3.Split(b4); // [],[3,4,4,1,5]

byte[] b5 = new byte[] { 0, 0, 3, 4, 4, 1, 1 };
byte[] b6 = new byte[] { 1, 1 };
var parts3 = b5.Split(b6); // [0,0,3,4,4],[]

byte[] b7 = new byte[] { 1, 2, 3, 4, 5 };
byte[] b8 = new byte[] { 1, 2, 3, 4 };
var parts4 = b7.Split(b8); // [],[5]

byte[] b9 = new byte[] { 1, 2, 3, 4, 5 };
byte[] b0 = new byte[] { 2, 3, 4, 5 };
var parts5 = b9.Split(b0); // [1],[]

byte[] c1 = new byte[] { 1, 2, 3, 4, 5 };
byte[] c2 = new byte[] { 6 };
var parts6 = c1.Split(c2); // null