Powershell basis for Hashword 3 code base

hashword3.ps1

# Algorithms and Encoding
$md5 = new-object -TypeName System.Security.Cryptography.MD5CryptoServiceProvider

$utf8 = new-object -TypeName System.Text.UTF8Encoding

# Used variables
$alpha = 0
$num = 1
$dot = 3
$dash = 5
$at = 9

echo "`n Seed?"
$seed = read-host
 
$short = ([System.BitConverter]::ToString($md5.ComputeHash($utf8.GetBytes($seed))) -replace "-",'').tolower()
 
echo "-----`n"

$hashword = Switch($short -Split ''){
    {$_ -match "\d" -and $num -ne $dot -and $num -ne $dash -and $num -ne $at}{$_;$num++;continue}
    {$_ -match "\d" -and $num -eq $dot} {$_ + ".";$num++;continue}
    {$_ -match "\d" -and $num -eq $dash} {$_ + "-";$num++;continue}
    {$_ -match "\d" -and $num -eq $at} {$_ + "@";$num = 1;continue}
    {$_ -match "[a-z]" -and $alpha -lt 3} {$_;$alpha++;continue}
    {$_ -match "[a-z]"} {$alpha = 0;[char]::toupper($_)}
}
echo " hashword is #$($hashword -join '')"

This might be a good start.

Current result is that it separates the hashword into a character array and evaluates each character to determine if it's a letter or number. It then capitalizes every fourth letter.

To do: rejoin the array as a variable while maintaining the capitalization (which, for some reason, it doesn't do)

Possible solution: on like 36, throw $n to a string and join the strings?

http://www.powershellmagazine.com/2013/07/04/pstip-inserting-characters-at-a-specified-string-index-position/

http://stackoverflow.com/questions/29246004/joining-character-array-elements

Newest version of source includes caps and special characters.