Add FIPS check

Module/BrocadeICX/Core/New-ICXSession.ps1

@@ -1,7 +1,7 @@
 ###############################################################################################################
 # Language     :  PowerShell 4.0
 # Filename     :  New-ICXSession.ps1
-# Autor        :  BornToBeRoot (https://github.com/BornToBeRoot)
+# Author       :  BornToBeRoot (https://github.com/BornToBeRoot)
 # Description  :  Create a new Brocade ICX sessions over SSH
 # Repository   :  https://github.com/BornToBeRoot/PowerShell_BrocadeICX
 ###############################################################################################################
@@ -24,8 +24,7 @@
     https://github.com/BornToBeRoot/PowerShell_BrocadeICX/blob/master/Documentation/Function/New-ICXSession.README.md
 #>
 
-function New-ICXSession
-{
+function New-ICXSession {
     [CmdletBinding()]
     param(
         [Parameter(
@@ -43,42 +42,41 @@ function New-ICXSession
         [Parameter(
             Position=2,
             Mandatory=$false,
-            HelpMessage='Credentials to authenticate agains a Brocade ICX Switch (SSH connection)')]
+            HelpMessage='Credentials to authenticate against a Brocade ICX Switch (SSH connection)')]
         [System.Management.Automation.PSCredential]
         [System.Management.Automation.CredentialAttribute()]
         $Credential
     )
 
-    Begin{
-
+    Begin {
+        # If FIPS is enabled, exit with error
+        if ((Get-ItemPropertyValue -Path HKLM:\SYSTEM\CurrentControlSet\Control\Lsa\FipsAlgorithmPolicy -Name Enabled) -eq 1) {
+            throw "FIPS is enabled. FIPS must be disabled to establish SSH connection."
+        }
     }
 
-    Process{
+    Process {
         # If no credentials are submitted by parameter, prompt the user to enter them
-        if($Credential -eq $null)
-        {
-            try{
+        if ($Credential -eq $null) {
+            try {
                 $Credential = Get-Credential $null
             }
-            catch{
+            catch {
                 throw "Entering credentials has been canceled by user. Can't establish SSH connection without credentials!"
             }
         }
 
         Write-Verbose -Message "Accept key is set to: $AcceptKey"
 
         # Create a new Brocade ICX session for each Switch
-        foreach($ComputerName2 in $ComputerName)
-        {
+        foreach ($ComputerName2 in $ComputerName) {
             Write-Verbose -Message "Create new SSH session for ""$ComputerName2""."
 
-            try{
-                if($AcceptKey)
-                {
+            try {
+                if ($AcceptKey) {
                     $Created_SSHSession = New-SSHSession -ComputerName $ComputerName2 -Credential $Credential -AcceptKey -ErrorAction Stop
                 }
-                else 
-                {
+                else {
                     $Created_SSHSession = New-SSHSession -ComputerName $ComputerName2 -Credential $Credential -ErrorAction Stop
                 }
 
@@ -89,7 +87,7 @@ function New-ICXSession
                 Write-Verbose -Message "Creating shell stream for ""$ComputerName2""..."
                 $SSHStream = $SSHSession.Session.CreateShellStream("dumb", 0, 0, 0, 0, 1000)
             }
-            catch{
+            catch {
                 Write-Error -Message "$($_.Exception.Message)" -Category ConnectionError
                 continue
             }
@@ -105,7 +103,7 @@ function New-ICXSession
                 Stream = $SSHStream
             }
 
-            #  Set the default parameter set
+            # Set the default parameter set
             $ICXSession.PSObject.TypeNames.Insert(0,'BrocadeICX.ICXSession')
             $DefaultDisplaySet = 'SessionID', 'ComputerName', 'AccessMode'
             $DefaultDisplayPropertySet = New-Object System.Management.Automation.PSPropertySet('DefaultDisplayPropertySet',[string[]]$DefaultDisplaySet)
@@ -126,7 +124,7 @@ function New-ICXSession
         }       
     }
 
-    End{
+    End {
 
     }
 }