diff --git a/modules/openapi-generator/src/main/resources/powershell/http_signature_auth.mustache b/modules/openapi-generator/src/main/resources/powershell/http_signature_auth.mustache
index fe6a3dc8ec6..698f9b248f4 100644
--- a/modules/openapi-generator/src/main/resources/powershell/http_signature_auth.mustache
+++ b/modules/openapi-generator/src/main/resources/powershell/http_signature_auth.mustache
@@ -174,7 +174,7 @@ function Get-{{{apiNamePrefix}}}RSASignature {
             $keyStr = Get-Content -Path $PrivateKeyFilePath -Raw
             $ecKeyBase64String = $keyStr.Replace($ecKeyHeader, "").Replace($ecKeyFooter, "").Trim()
             $keyBytes = [System.Convert]::FromBase64String($ecKeyBase64String)
-            $rsa = [System.Security.Cryptography.RSACng]::new()
+            $rsa = [System.Security.Cryptography.RSA]::Create()
             [int]$bytCount = 0
             $rsa.ImportRSAPrivateKey($keyBytes, [ref] $bytCount)
 
diff --git a/samples/client/petstore/powershell/src/PSPetstore/Private/PSHttpSignatureAuth.ps1 b/samples/client/petstore/powershell/src/PSPetstore/Private/PSHttpSignatureAuth.ps1
index 6cb2087ccf1..e3333ae336f 100644
--- a/samples/client/petstore/powershell/src/PSPetstore/Private/PSHttpSignatureAuth.ps1
+++ b/samples/client/petstore/powershell/src/PSPetstore/Private/PSHttpSignatureAuth.ps1
@@ -180,7 +180,7 @@ function Get-PSRSASignature {
             $keyStr = Get-Content -Path $PrivateKeyFilePath -Raw
             $ecKeyBase64String = $keyStr.Replace($ecKeyHeader, "").Replace($ecKeyFooter, "").Trim()
             $keyBytes = [System.Convert]::FromBase64String($ecKeyBase64String)
-            $rsa = [System.Security.Cryptography.RSACng]::new()
+            $rsa = [System.Security.Cryptography.RSA]::Create()
             [int]$bytCount = 0
             $rsa.ImportRSAPrivateKey($keyBytes, [ref] $bytCount)