stringHash.ps1

# Function to hash any string passed to it - Provide text to hash as parameter
function stringHash
{
     <#
     .SYNOPSIS
     Function to hash any string passed to it.

     .DESCRIPTION
     Provide text you would like to generate a hash value for as an argument and the function will return an SHA256 hash of the text.

     .NOTES
     The script returns the hash value directly to the script or command line. If you want to store the value, you need to call the function as the value of a variable.

     .EXAMPLE
     stringHash "Hello World"
     $hashResults = stringHash "Hello World"
     $hashResults = stringHash $SomeVariable
     #>

     param (
        [Parameter(Mandatory)]
        [string]$textToHash

     )

     # Build hasher
     $hasher = new-object System.Security.Cryptography.SHA256Managed

     # Format string
     $toHash = [System.Text.Encoding]::UTF8.GetBytes($textToHash)

     # Hash string
     $hashByteArray = $hasher.ComputeHash($toHash)

     # Build output
     foreach($byte in $hashByteArray)
     {
          $hashResults += $byte.ToString()
     }

     # Return text string hash
     return $hashResults
}