internal/Convert-ByteToHexString.ps1

function Convert-ByteToHexString {
<#
    .SYNOPSIS
    Converts byte object into hex string
     
    .DESCRIPTION
    Converts byte object ([byte[]]@(1,100,23,54)) into the hex string (e.g. '0x01641736')
    Used when working with SMO logins and their byte parameters: sids and hashed passwords
         
    .PARAMETER InputObject
    Input byte[] object (e.g. [byte[]]@(18,52))
     
    .NOTES
    Tags: Login, Internal
    Author: Kirill Kravtsov (@nvarscar)
    dbatools PowerShell module (https://dbatools.io, clemaire@gmail.com)
    Copyright (C) 2016 Chrissy LeMaire
     
    This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
     
    This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
     
    You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.
 
    .EXAMPLE
    Convert-ByteToHexString ([byte[]]@(1,100,23,54))
     
    Returns hex string '0x01641736'
     
    .EXAMPLE
    Convert-ByteToHexString 18,52
     
    Returns hex string '0x1234'
#>

    Param ([byte[]]$InputObject)
    $outString = "0x"; $InputObject | ForEach-Object { $outString += ("{0:X}" -f $_).PadLeft(2, "0") }
    Return $outString
}