diff --git a/src/Blockchain/custom/New-AzBlockchainMember.ps1 b/src/Blockchain/custom/New-AzBlockchainMember.ps1
index 5845275741ec..0d4b5f739e46 100644
--- a/src/Blockchain/custom/New-AzBlockchainMember.ps1
+++ b/src/Blockchain/custom/New-AzBlockchainMember.ps1
@@ -184,12 +184,12 @@ param(
 process {
     try {
         if ($PSBoundParameters.ContainsKey('Password')) {
-            $psTxt = [System.Runtime.InteropServices.marshal]::PtrToStringAuto([System.Runtime.InteropServices.marshal]::SecureStringToBSTR($PSBoundParameters['Password']))
+            $psTxt = . "$PSScriptRoot/../utils/Unprotect-SecureString.ps1" $PSBoundParameters['Password']
             $null = $PSBoundParameters.Remove('Password')
             $PSBoundParameters.Add('Password', $psTxt)
         }
         if ($PSBoundParameters.ContainsKey('ConsortiumManagementAccountPassword')) {
-            $psTxt = [System.Runtime.InteropServices.marshal]::PtrToStringAuto([System.Runtime.InteropServices.marshal]::SecureStringToBSTR($PSBoundParameters['ConsortiumManagementAccountPassword']))
+            $psTxt = . "$PSScriptRoot/../utils/Unprotect-SecureString.ps1" $PSBoundParameters['ConsortiumManagementAccountPassword']
             $null = $PSBoundParameters.Remove('ConsortiumManagementAccountPassword')
             $PSBoundParameters.Add('ConsortiumManagementAccountPassword', $psTxt)
         }
diff --git a/src/Blockchain/custom/New-AzBlockchainTransactionNode.ps1 b/src/Blockchain/custom/New-AzBlockchainTransactionNode.ps1
index b0fef07d39d5..e8ba50cebedb 100644
--- a/src/Blockchain/custom/New-AzBlockchainTransactionNode.ps1
+++ b/src/Blockchain/custom/New-AzBlockchainTransactionNode.ps1
@@ -135,7 +135,7 @@ param(
 process {
     try {
         if ($PSBoundParameters.ContainsKey('Password')) {
-            $psTxt = [System.Runtime.InteropServices.marshal]::PtrToStringAuto([System.Runtime.InteropServices.marshal]::SecureStringToBSTR($PSBoundParameters['Password']))
+            $psTxt = . "$PSScriptRoot/../utils/Unprotect-SecureString.ps1" $PSBoundParameters['Password']
             $PSBoundParameters.Remove('Password')
             $PSBoundParameters.Add('Password', $psTxt)
         }
diff --git a/src/Blockchain/custom/Update-AzBlockchainMember.ps1 b/src/Blockchain/custom/Update-AzBlockchainMember.ps1
index 63d29ab41e69..58a1e491ec58 100644
--- a/src/Blockchain/custom/Update-AzBlockchainMember.ps1
+++ b/src/Blockchain/custom/Update-AzBlockchainMember.ps1
@@ -141,12 +141,12 @@ param(
 process {
     try {
         if ($PSBoundParameters.ContainsKey('Password')) {
-            $psTxt = [System.Runtime.InteropServices.marshal]::PtrToStringAuto([System.Runtime.InteropServices.marshal]::SecureStringToBSTR($PSBoundParameters['Password']))
+            $psTxt = . "$PSScriptRoot/../utils/Unprotect-SecureString.ps1" $PSBoundParameters['Password']
             $PSBoundParameters.Remove('Password')
             $PSBoundParameters.Add('Password', $psTxt)
         }
         if ($PSBoundParameters.ContainsKey('ConsortiumManagementAccountPassword')) {
-            $psTxt = [System.Runtime.InteropServices.marshal]::PtrToStringAuto([System.Runtime.InteropServices.marshal]::SecureStringToBSTR($PSBoundParameters['ConsortiumManagementAccountPassword']))
+            $psTxt = . "$PSScriptRoot/../utils/Unprotect-SecureString.ps1" $PSBoundParameters['ConsortiumManagementAccountPassword']
             $PSBoundParameters.Remove('ConsortiumManagementAccountPassword')
             $PSBoundParameters.Add('ConsortiumManagementAccountPassword', $psTxt)
         }
diff --git a/src/Blockchain/custom/Update-AzBlockchainTransactionNode.ps1 b/src/Blockchain/custom/Update-AzBlockchainTransactionNode.ps1
index 50dcb18f7493..4520f593ff71 100644
--- a/src/Blockchain/custom/Update-AzBlockchainTransactionNode.ps1
+++ b/src/Blockchain/custom/Update-AzBlockchainTransactionNode.ps1
@@ -133,7 +133,7 @@ param(
 process {
     try {
         if ($PSBoundParameters.ContainsKey('Password')) {
-            $psTxt = [System.Runtime.InteropServices.marshal]::PtrToStringAuto([System.Runtime.InteropServices.marshal]::SecureStringToBSTR($PSBoundParameters['Password']))
+            $psTxt = . "$PSScriptRoot/../utils/Unprotect-SecureString.ps1" $PSBoundParameters['Password']
             $PSBoundParameters.Remove('Password')
             $PSBoundParameters.Add('Password', $psTxt)
         }