Pass_Phrase-or-Word_Generator

# save the old Verbose pref
$OldVPref = $VerbosePreference
# enable verbose output
$VerbosePreference = 'Continue'

$URL = 'https://www.eff.org/files/2016/07/18/eff_large_wordlist.txt'
$WordCount = 3
$UpCaseCount = 4
$NumberRange = 10..999

$SourceDir = $env:TEMP
$SourceFile = 'EFF_Large_Word_List.txt'
$FullSourceFile = Join-Path -Path $SourceDir -ChildPath $SourceFile

# if the file is there, use it
#    otherwise get from the URL and save it to the named file
Write-Verbose 'Checking for local copy of word list ...'
if (-not (Test-Path -Path $FullSourceFile))
    {
    Write-Verbose '    Local word list file NOT found - downloading a large-ish text file ...'
    (Invoke-RestMethod -Uri $URL).Split("`n").Trim() |
        Set-Content -LiteralPath $FullSourceFile
    Write-Verbose '    Local word list file saved.'
    }
    else
    {
    Write-Verbose '    Local word list file found.'
    }

$SourceWordList = Get-Content -Path $FullSourceFile

# convert the string of symbols to an array
#    the final "-ne" is to remove the blank array items from the split
$SymbolChars = ('!@#$%^&()_-{}[]<>' -split '') -ne ''

$WordList = Get-Random -InputObject $SourceWordList -Count $WordCount
# each line = number<space>word, so take only the word
$WordList = $WordList.ForEach({($_ -split '\s{1,}')[-1]})
# title case each word
$WordList = $WordList.ForEach({(Get-Culture).TextInfo.ToTitleCase($_)})

# merge with spaces to make a passphrase
$PassPhrase = $WordList -join ' '

# merge the words into one lower case word
$Password = (-join $WordList).ToLower()

# get $UpCaseCount indexes for up-casing random letters in $Password
$ChangeIndexList = Get-Random -InputObject (0..($Password.Length - 1)) -Count $UpCaseCount
foreach ($CIL_Item in $ChangeIndexList)
    {
    $UCLetter = ([string]$Password[$CIL_Item]).ToUpper()
    $Password = $Password.Remove($CIL_Item,1).Insert($CIL_Item, $UCLetter)
    }

$Password = -join (
    $Password,
    (Get-Random -InputObject $SymbolChars -Count 1),
    (Get-Random -InputObject $NumberRange -Count 1)
    )

'Password    = {0}' -f $Password
'Pass phrase = {0}' -f $PassPhrase

# restore previous VPref
$VerbosePreference = $OldVPref