diff --git a/certs/live.cer b/certs/live.cer
new file mode 100644
index 0000000..0db2e0b
--- /dev/null
+++ b/certs/live.cer
@@ -0,0 +1,38 @@
+-----BEGIN CERTIFICATE-----
+MIIGkzCCBXugAwIBAgIKXfBp5gAAAD+hNjANBgkqhkiG9w0BAQsFADBbMRMwEQYK
+CZImiZPyLGQBGRYDbmV0MRkwFwYKCZImiZPyLGQBGRYJc2FmYXJpY29tMSkwJwYD
+VQQDEyBTYWZhcmljb20gSW50ZXJuYWwgSXNzdWluZyBDQSAwMjAeFw0xNzA0MjUx
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++c7dHh6mWguEEoE3NbV7Xjl60zbD/Buvmu6i9EYz+27jNVPI6pRXHvp+ajIzTSsi
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+aWNlcyxDTj1Db25maWd1cmF0aW9uLERDPXNhZmFyaWNvbSxEQz1uZXQ/Y2VydGlm
+aWNhdGVSZXZvY2F0aW9uTGlzdD9iYXNlP29iamVjdENsYXNzPWNSTERpc3RyaWJ1
+dGlvblBvaW50hkdodHRwOi8vY3JsLnNhZmFyaWNvbS5jby5rZS9TYWZhcmljb20l
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+cmljb20sREM9bmV0P2NBQ2VydGlmaWNhdGU/YmFzZT9vYmplY3RDbGFzcz1jZXJ0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+-----END CERTIFICATE-----
diff --git a/certs/sandbox.cer b/certs/sandbox.cer
new file mode 100644
index 0000000..94eb486
--- /dev/null
+++ b/certs/sandbox.cer
@@ -0,0 +1,35 @@
+-----BEGIN CERTIFICATE-----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+DgYDVR0PAQH/BAQDAgWgMB0GA1UdJQQWMBQGCCsGAQUFBwMBBggrBgEFBQcDAjBr
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+aGEyLWc2LmNybDAvoC2gK4YpaHR0cDovL2NybDQuZGlnaWNlcnQuY29tL3NzY2Et
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+ARYcaHR0cHM6Ly93d3cuZGlnaWNlcnQuY29tL0NQUzAIBgZngQwBAgIwfAYIKwYB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=
+-----END CERTIFICATE-----
diff --git a/config/config.php b/config/config.php
index 48d0ee9..e5275d4 100644
--- a/config/config.php
+++ b/config/config.php
@@ -4,5 +4,9 @@
  * You can place your custom package configuration in here.
  */
 return [
-
-];
\ No newline at end of file
+    "mpesa" => [
+        "cert_path" => storage_path("mpesa"),
+        "live_cert_name" => "live.cer",
+        "sandbox_cert_name" => "sandbox.cer"
+    ]
+];
diff --git a/src/Daraja.php b/src/Daraja.php
index d60f833..70a5da0 100644
--- a/src/Daraja.php
+++ b/src/Daraja.php
@@ -156,7 +156,40 @@ public function registerCallbacks($shortCode,$confirmationURL, $validationURL=nu
     }
 
     /**
-     * Use this function to initiate a reversal request
+     * Generate an encrypted security credential from the initiator password on either live or sandbox env.
+     * @param string $initiatorPassword
+     * @param string $env live|sandbox
+     */
+    public function encryptInitiatorPassword($initiatorPassword, $env="sandbox") {
+        if (!in_array($env,["live", "sandbox"])) {
+            throw new \Exception("Environment must be either live or sandbox");
+        }
+        $publicKey = config('daraja.mpesa.cert_path')."/".config('daraja.mpesa.'.$env.'_cert_name');
+        openssl_public_encrypt($initiatorPassword, $encrypted, $publicKey, OPENSSL_PKCS1_PADDING);
+        return base64_encode($encrypted);
+    }
+
+    /**
+     * Use this function to initiate a reversal request. This is an abstracted function that takes care of SecurityCredential Generation
+     * @param $Initiator | The name of Initiator to initiating  the request
+     * @param $InitiatorPassword | 	Plain Text Initiator Password for generating the security credential
+     * @param $TransactionID | Unique Id received with every transaction response.
+     * @param $Amount | Amount
+     * @param $ReceiverParty | Organization /MSISDN sending the transaction
+     * @param $ResultURL | The path that stores information of transaction
+     * @param $QueueTimeOutURL | The path that stores information of time out transaction
+     * @param $Remarks | Comments that are sent along with the transaction.
+     * @param $Occasion | 	Optional Parameter
+     * @return mixed|string
+     */
+    public function reverseTransaction($Initiator, $InitiatorPassword, $TransactionID, $Amount, $ReceiverParty, $ResultURL, $QueueTimeOutURL, $Remarks, $Occasion) {
+        $SecurityCredential = $this->encryptInitiatorPassword($InitiatorPassword,$this->environment);
+        $CommandID = 'TransactionReversal';
+        $RecieverIdentifierType = 11;
+        return $this->reversal($CommandID,$Initiator,$SecurityCredential,$TransactionID,$Amount,$ReceiverParty,$RecieverIdentifierType,$ResultURL,$QueueTimeOutURL,$Remarks,$Occasion);
+    }
+    /**
+     * Use this function to initiate a reversal request. This is the lowest level function that can change even the Organization Id Type.
      * @param $CommandID | Takes only 'TransactionReversal' Command id
      * @param $Initiator | The name of Initiator to initiating  the request
      * @param $SecurityCredential | 	Encrypted Credential of user getting transaction amount
@@ -211,7 +244,6 @@ public function reversal($CommandID, $Initiator, $SecurityCredential, $Transacti
         curl_setopt($curl, CURLOPT_HEADER, false);
         $curl_response = curl_exec($curl);
         return json_decode($curl_response);
-
     }
 
     /**
diff --git a/src/DarajaServiceProvider.php b/src/DarajaServiceProvider.php
index eba3999..14b606f 100644
--- a/src/DarajaServiceProvider.php
+++ b/src/DarajaServiceProvider.php
@@ -24,6 +24,11 @@ public function boot()
                 __DIR__.'/../config/config.php' => config_path('daraja.php'),
             ], 'config');
 
+            // Publishing mpesa certs.
+            $this->publishes([
+                __DIR__.'/../certs' => storage_path('mpesa'),
+            ], 'certs');
+
             // Publishing the views.
             /*$this->publishes([
                 __DIR__.'/../resources/views' => resource_path('views/vendor/daraja'),