Wayne Bloss

using System;
using System.Collections.Generic;
using System.Text;

namespace Utils
{
    public class Hex
    {
        private static char[] _HexDigits = {
            '0', '1', '2', '3', '4', '5', '6', '7',
            '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
            };

        public static string ToHexString(byte[] bytes)
        {
            int j = bytes.Length;

            char[] chars = new char[j * 2];

            for (int i = 0; i < j; i++)
            {
                int b = bytes[i];
                chars[i * 2] = _HexDigits[b >> 4];
                chars[i * 2 + 1] = _HexDigits[b & 0xF];
            }
            return new string(chars);
        }

        public static string ToHexString(string sPrefix, byte[] bytes)
        {
            int k = sPrefix.Length;

            int j = bytes.Length;

            char[] chars = new char[ k + (j * 2) ];

            sPrefix.CopyTo(0, chars, 0, k);

            for (int i = 0; i < j; i++)
            {
                int b = bytes[i];
                int c = (i * 2) + k;
                chars[c] = _HexDigits[b >> 4];
                chars[c + 1] = _HexDigits[b & 0xF];
            }
            return new string(chars);
        }

        public static string ToHexString(string sPrefix, byte[] bytes, string sSuffix)
        {
            int k = sPrefix.Length;

            int m = sSuffix.Length;

            int j = bytes.Length;

            char[] chars = new char[ k + (j * 2) + m ];

            sPrefix.CopyTo(0, chars, 0, k);

            for (int i = 0; i < j; i++)
            {
                int b = bytes[i];
                int c = (i * 2) + k;
                chars[c] = _HexDigits[b >> 4];
                chars[c + 1] = _HexDigits[b & 0xF];
            }

            sSuffix.CopyTo(0, chars, k + (j * 2), m);

            return new string(chars);
        }
    }
}