Suitable hash code methods for an array of bytes?

Question

What is the best hash method for an array of byte?

The arrays are serialized class objects containing jpeg image passed between applications over TCP/IP

Answer 1

Based on the Compiler Generated GetHashCode()

public static int GetHashCode(byte[] array) {
    unchecked {
        int i = 0;
        int hash = 17;
        int rounded = array.Length & ~3;

        hash = 31 * hash + array.Length;

        for (; i < rounded; i += 4) {
            hash = 31 * hash + BitConverter.ToInt32(array, i);
        }

        if (i < array.Length) {
            int val = array[i];
            i++;

            if (i < array.Length) {
                val |= array[i] << 8;
                i++;

                if (i < array.Length) {
                    val |= array[i] << 16;
                }
            }

            hash = 31 * hash + val;
        }

        return hash;
    }
}

Ah... and a link to C# Murmurhash http://landman-code.blogspot.com/2009/02/c-superfasthash-and-murmurhash2.html