src/Certificate/New-CSCertAttribute.ps1

@@ -1,4 +1,9 @@
 function New-CSCertAttribute {
+    [Diagnostics.CodeAnalysis.SuppressMessageAttribute(
+        'PSUseShouldProcessForStateChangingFunctions',
+        '',
+        Justification = 'Returns a new object and does not change data'
+    )]
     <#
     .SYNOPSIS
         Creates required data for a certificate signing request.
@@ -34,7 +39,15 @@ function New-CSCertAttribute {
         [PSCredentialStore.Certificate.CSRDetails]
 
     .EXAMPLE
-        New-CSCertAttribute -Country 'DE' -State 'BW' -City 'Karlsruhe' -Organization 'AwesomeIT' -OrganizationalUnitName '' -CommonName 'MyPrivateCert'
+        $AttribParams = @{
+            Country                = 'DE'
+            State                  = 'BW'
+            City                   = 'Karlsruhe'
+            Organization           ='AwesomeIT'
+            OrganizationalUnitName ='PSCredentialStore'
+            CommonName             ='MyPrivateCert'
+        }
+        New-CSCertAttribute @AttribParams
     #>
 
     [CmdletBinding()]

src/Certificate/Test-CSCertificate.ps1

@@ -35,7 +35,10 @@ function Test-CSCertificate {
             $CS = Get-CredentialStore -Shared
         }
         if ($null -ne $CS.PfxCertificate) {
-            Write-Warning 'There is a Pfx certificate file linked in the store. Certificates saved in the Cert store will be ignored!'
+            Write-Warning -Message (
+                'There is a Pfx certificate file linked in the store. ' +
+                'Certificates saved in the Cert store will be ignored!'
+            )
         }
 
     }
@@ -47,13 +50,28 @@ function Test-CSCertificate {
             if ( $isLinux) {
                 $cert = Get-CSPfxCertificate -Thumbprint $CS.Thumbprint -StoreName 'My' -StoreLocation 'CurrentUser'
                 if ($null -eq $cert) {
-                    $cert = Get-CSPfxCertificate -Thumbprint $CS.Thumbprint -StoreName 'Root' -StoreLocation 'LocalMachine'
+                    $PFXParams = @{
+                        Thumbprint    = $CS.Thumbprint
+                        StoreName     = 'Root'
+                        StoreLocation = 'LocalMachine'
+                    }
+                    $cert = Get-CSPfxCertificate @PFXParams
                 }
             }
             elseif ( (! $isLinux) -or ($isWindows) ) {
-                $cert = Get-CSPfxCertificate -Thumbprint $CS.Thumbprint -StoreName 'My' -StoreLocation 'LocalMachine'
+                $PFXParams = @{
+                    Thumbprint    = $CS.Thumbprint
+                    StoreName     = 'My'
+                    StoreLocation = 'LocalMachine'
+                }
+                $cert = Get-CSPfxCertificate @PFXParams
                 if ($null -eq $cert) {
-                    $cert = Get-CSPfxCertificate -Thumbprint $CS.Thumbprint -StoreName 'Root' -StoreLocation 'LocalMachine'
+                    $PFXParams = @{
+                        Thumbprint    = $CS.Thumbprint
+                        StoreName     = 'Root'
+                        StoreLocation = 'LocalMachine'
+                    }
+                    $cert = Get-CSPfxCertificate @PFXParams
                 }
             }
         }

src/Item/New-CredentialStoreItem.ps1

@@ -36,6 +36,11 @@ function New-CredentialStoreItem {
     #>
 
     [CmdletBinding(DefaultParameterSetName = 'Private')]
+    [Diagnostics.CodeAnalysis.SuppressMessageAttribute(
+        'PSUseShouldProcessForStateChangingFunctions',
+        '',
+        Justification = 'Adds data into an existing object/file'
+    )]
     param (
         [Parameter(Mandatory = $true, ParameterSetName = 'Shared')]
         [Parameter(Mandatory = $true, ParameterSetName = 'Private')]
@@ -109,7 +114,7 @@ function New-CredentialStoreItem {
                 $Cert = Get-PfxCertificate -FilePath $CSContent.PfxCertificate -ErrorAction Stop
             }
 
-            if (Get-Member -InputObject $CSContent -Name $CredentialName -Membertype Properties) {
+            if (Get-Member -InputObject $CSContent -Name $CredentialName -MemberType Properties) {
                 $MessageParams = @{
                     Message = 'The given host already exists. Nothing to do here.'
                 }
@@ -123,9 +128,20 @@ function New-CredentialStoreItem {
                     Password     = ConvertFrom-SecureString -SecureString $Credential.Password -Key $RSAKey
                     Created      = $CurrentDate
                     LastChange   = $null
-                    EncryptedKey = [Convert]::ToBase64String($Cert.PublicKey.Key.Encrypt($RSAKey, [System.Security.Cryptography.RSAEncryptionPadding]::Pkcs1))
+                    EncryptedKey = [Convert]::ToBase64String(
+                        $Cert.PublicKey.Key.Encrypt(
+                            $RSAKey,
+                            [System.Security.Cryptography.RSAEncryptionPadding]::Pkcs1
+                        )
+                    )
                 }
-                Add-Member -InputObject $CSContent -Name $CredentialName -MemberType NoteProperty -Value $CredentialHash
+                $MemberParams = @{
+                    InputObject = $CSContent
+                    Name        = $CredentialName
+                    MemberType  = 'NoteProperty'
+                    Value       = $CredentialHash
+                }
+                Add-Member @MemberParams
                 try {
                     ConvertTo-Json -InputObject $CSContent | Out-File -FilePath $Path
                 }

src/Item/Set-CredentialStoreItem.ps1

@@ -37,6 +37,11 @@ function Set-CredentialStoreItem {
     #>
 
     [CmdletBinding(DefaultParameterSetName = 'Private')]
+    [Diagnostics.CodeAnalysis.SuppressMessageAttribute(
+        'PSUseShouldProcessForStateChangingFunctions',
+        '',
+        Justification = 'Updates existing credential object.'
+    )]
     param (
         [Parameter(Mandatory = $true, ParameterSetName = 'Private')]
         [Parameter(Mandatory = $true, ParameterSetName = 'Shared')]
@@ -105,10 +110,14 @@ function Set-CredentialStoreItem {
                 $Cert = Get-PfxCertificate -FilePath $CSContent.PfxCertificate -ErrorAction Stop
             }
 
-            if (Get-Member -InputObject $CSContent -Name $CredentialName -Membertype Properties) {
+            if (Get-Member -InputObject $CSContent -Name $CredentialName -MemberType Properties) {
                 $RSAKey = Get-RandomAESKey
                 $CSContent.$CredentialName.User = $Credential.UserName
-                $CSContent.$CredentialName.Password = ConvertFrom-SecureString -SecureString $Credential.Password -Key $RSAKey
+                $ConvertParams = @{
+                    SecureString = $Credential.Password
+                    Key          = $RSAKey
+                }
+                $CSContent.$CredentialName.Password = ConvertFrom-SecureString @ConvertParams
                 $CSContent.$CredentialName.LastChange = $CurrentDate
                 $CSContent.$CredentialName.EncryptedKey = [Convert]::ToBase64String(
                     $Cert.PublicKey.Key.Encrypt(