Difference between revisions of "Single Sign-On"

Revision as of 08:21, 10 May 2016

General Information

SmartSimple offers one method of implementing Single Sign-On (SSO) integration:

• SAML 2.0
• Deprecated: Cipher encrypted reference

This page provides technical details of each solution.

Implementation of Single Sign On using either method requires configuration by both SmartSimple and the administrator of the system that will provide the authentication. SmartSimple's implementation of Single Sign On acts as the Service Provider and assumes the client has the infrastructure and resources to host, configure, and manage the Identity Provider service. Please contact your account manager or SmartSimple Support for further information.

SAML 2.0

SmartSimple supports SAML (Security Assertion Markup Language) 2.0 as the Service Provider through our own proprietary implementation of this standard. As the Service Provider, the user will first authenticate on the client side system/infrastructure and then be directed into SmartSimple.

The client Identity Provider service will construct a base64-encoded SAML assertion and send this to the user’s browser. The user’s browser will then relay this assertion to the SmartSimple server for SSO authentication.

Prerequisites

• You must provision your own Identity Provider service, third-party or otherwise, for use with this feature. Enabling and maintaining the Identity Provider is your responsibility.
• You must provide SmartSimple with a public key in base64-encoded X.509 Certificate format for digital signature validation.

Attributes

The following Assertion attributes are used:

• NameID (or optionally UID (client system’s unique user id)
• Email (optional)
• First name (optional)
• Last name (optional)
• Department (optional)
• Roles (optional, comma delimited list of SmartSimple user roles (by name) to be assigned to the user)
• Language (optional)
• RedirectURL (optional)

SAML Response Sample XML

The following is an example of a valid SAML Response:

<?xmlversion="1.0" encoding="UTF-8"?>
<samlp:Response xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol" Destination="https://alias.smartsimple.com/SAML2/" IssueInstant="2014-07-12T14:17:03.063Z" ID="BYavZkuNtRHC5rEPhIAEQrys1Wb" Version="2.0">

   <saml:Issuer xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion">sso:saml2:alias:stage:SmartSimple:idp</saml:Issuer>

   <ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
      <ds:SignedInfo>
         <ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
         <ds:SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1"/>
         <ds:Reference URI="#BYavZkuNtRHC5rEPhIAEQrys1Wb">
            <ds:Transforms>
               <ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/>
               <ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
            </ds:Transforms>
            <ds:DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/>
            <ds:DigestValue>+2uvXQh+d65mNWs0G6FBf4igIxU=</ds:DigestValue>
         </ds:Reference>
      </ds:SignedInfo>
      <ds:SignatureValue>LEOCPec/eNBMqBV7A99...</ds:SignatureValue>
   </ds:Signature>

   <samlp:Status>
      <samlp:StatusCodeValue="urn:oasis:names:tc:SAML:2.0:status:Success" />
   </samlp:Status>

   <saml:Assertion xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion" Version="2.0" IssueInstant="2014-07-12T14:17:03.246Z" ID="X14MvZtPaqyUjfFCbehto32uDTG">
     <saml:Issuer>sso:saml2:alias:stage:SmartSimple:idp</saml:Issuer>
      <saml:Subject>
         <saml:NameID Format="urn:oasis:names:tc:SAML:1.1:nameid-format:unspecified">T5014CD</saml:NameID>
         <saml:SubjectConfirmation Method="urn:oasis:names:tc:SAML:2.0:cm:bearer">
            <saml:SubjectConfirmationData NotOnOrAfter="2014-07-12T14:22:03.246Z" Recipient="https://alias.smartsimple.com/SAML2/"/>
         </saml:SubjectConfirmation>
      </saml:Subject>
      <saml:Conditions NotOnOrAfter="2014-07-12T14:22:03.246Z" NotBefore="2014-07-12T14:12:03.246Z">
         <saml:AudienceRestriction>
           <saml:Audience>sso:saml2:alias:stage:SmartSimple:sp</saml:Audience>
         </saml:AudienceRestriction>
      </saml:Conditions>
      <saml:AuthnStatement AuthnInstant="2014-07-12T14:17:03.246Z" SessionIndex="X14MvZtPaqyUjfFCbehto32uDTG">
         <saml:AuthnContext>
           <saml:AuthnContextClassRef>urn:oasis:names:tc:SAML:2.0:ac:classes:unspecified</saml:AuthnContextClassRef>
         </saml:AuthnContext>
      </saml:AuthnStatement>
      <saml:AttributeStatement xmlns:xs="http://www.w3.org/2001/XMLSchema">
         <saml:AttributeName Format="urn:oasis:names:tc:SAML:2.0:attrname-format:basic" Name="UID">
            <saml:AttributeValue xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="xs:string">T5014CD</saml:AttributeValue>
         </saml:Attribute>
         <saml:AttributeName Format="urn:oasis:names:tc:SAML:2.0:attrname-format:basic" Name="Email">
            <saml:AttributeValue xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="xs:string">david@alias.com</saml:AttributeValue>
         </saml:Attribute>
         <saml:AttributeName Format="urn:oasis:names:tc:SAML:2.0:attrname-format:basic" Name="First name">
            <saml:AttributeValue xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="xs:string">David</saml:AttributeValue>
         </saml:Attribute>
         <saml:AttributeName Format="urn:oasis:names:tc:SAML:2.0:attrname-format:basic" Name="Last name">
            <saml:AttributeValue xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="xs:string">Smith</saml:AttributeValue>
         </saml:Attribute>
         <saml:AttributeName Format="urn:oasis:names:tc:SAML:2.0:attrname-format:basic" Name="Department">
            <saml:AttributeValue xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="xs:string">Shipping</saml:AttributeValue>
         </saml:Attribute>
         <saml:AttributeName Format="urn:oasis:names:tc:SAML:2.0:attrname-format:basic" Name="Roles">
            <saml:AttributeValue xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="xs:string">Clerk</saml:AttributeValue>
         </saml:Attribute>
      </saml:AttributeStatement>
   </saml:Assertion>

</samlp:Response>

Cipher encrypted reference

Please note that this feature has been deprecated.

The SmartSimple cipher-encrypted reference SSO is accessed by passing parameters in the URL, including an encrypted token, for authentication.

Example:

http://myalias.smartsimple.com/QryAuth/?em=2&alias=myalias&message=dnnOBh9xvqPSC9uXZFAz10Tc

URL Request Parameters

em (1 or 2) 1 – Message is encoded by base64 only (for systems that do not support DES encryption). 2 – Message is first encrypted by "DES" using a provided key and then encoded by base64.

alias Identifies which SSO settings should be used. SmartSimple supports multiple SSO entries.

message A string composed of 11 elements delimited by two semi-colons (;;). For example, 88;;Id12345;;John;;Smith;;Contact,Internal Staff;;Toronto branch;;Canada Office;;abc@gmail.com;;Canada;;2011-11-08 12:30:00;;English

There must be no spaces between elements.

Key used: AD789034 (example only)

Encrypted Message will be: I%2BA%2B/Qb73aUmJZyP5f3/9Lm90fIguwkAgKovK0626HxbeT7cGfdZfSGyDdAybGstBwHBZgDYqc3uhgS7YTQIxzQXIfAovKCzbHLhc/Nh/AizHemadQL1SNRQeNwKz9%2B37IR%2BrwQyvR2Qlh0On8zy7cDSZYm/QKL5EmGV3g9Z%2B10=

Note: When base64 encoding results include a '+' character, please replace '+' with '%2B'

Element Position

• NOTE: Optional items listed with an asterisk are mandatory if this will result in creation of a new user (only relevant if the Single Sign-On setting “Create User” is enabled).

The 6th parameter (Parent Company) can result in changes to the organizational hierarchy. The Company (parameter 7) will be moved under the Parent Company, so this should be used with caution if this effect is not desired.

Cipher Encrypted Reference Sample Code

The following are examples of code for Cipher Encrypted Reference SSO configuration:

PHP

Sample and library: http://nl3.php.net/manual/en/mcrypt.ciphers.php

Java

No extra library required.

Sample code:

import java.security.spec.KeySpec; 
import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
importjavax.crypto.spec.DESKeySpec;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
 
/**
 *
 *@author  User
 */
public class DESEncrypt {
    
    /**Creates a new instance of DESEncrypt */
   public DESEncrypt() {
    }
    
   public static String encrypt(String keystr,String msg)
    {try{byte[] keyAsBytes = keystr.getBytes();
       KeySpec myKeySpec = new DESKeySpec(keyAsBytes);
       SecretKeyFactory mySecretKeyFactory =SecretKeyFactory.getInstance("DES");
       Cipher cipher Cipher.getInstance("DES/ECB/ PKCS5Padding");
      SecretKey  key =mySecretKeyFactory.generateSecret(myKeySpec);
       cipher.init(Cipher.ENCRYPT_MODE, key);
       byte[] plainText = msg.getBytes();
           byte[] encryptedText = cipher.doFinal(plainText);
           BASE64Encoder base64encoder = new BASE64Encoder();
           return base64encoder.encode(encryptedText);
     }catch (Exception e){return null;}
    }
    
   public static String decrypt(String keystr,String msg)
   {try{byte[] keyAsBytes = keystr.getBytes();
       KeySpec myKeySpec = new DESKeySpec(keyAsBytes);
       SecretKeyFactory mySecretKeyFactory =SecretKeyFactory.getInstance("DES");
       Cipher cipher = Cipher.getInstance("DES/ECB/ PKCS5Padding");
      SecretKey  key =mySecretKeyFactory.generateSecret(myKeySpec);
       cipher.init(Cipher.DECRYPT_MODE, key);
       BASE64Decoder base64decoder = new BASE64Decoder();
           byte[] encryptedText = base64decoder.decodeBuffer(msg);
          return new String(cipher.doFinal(encryptedText));
   }catch (Exception e){return null;}
    }
}

Vb.Net Sample

Imports System.Security.Cryptography
 
Public Function SSOEncrypt(ByValstrkey As String,ByVal strMessage AsString)
 
        Dim inputByteArray() AsByte = StrToByteArray(strMessage)
 
        Dim key As Byte()
        key =StrToByteArray(strkey)
 
        Dim des As New DESCryptoServiceProvider
       des.Mode = CipherMode.ECB
       des.Key = key
        Dim ms As New MemoryStream
        Dim cs As New CryptoStream(ms,des.CreateEncryptor(), CryptoStreamMode.Write)
       cs.Write(inputByteArray, 0, inputByteArray.Length)
       cs.FlushFinalBlock()
 
        Return Convert.ToBase64String(ms.ToArray())
 
End Function
 
Public Shared FunctionStrToByteArray(ByVal str As String) As Byte()
 
        Dim encoding As New System.Text.UTF8Encoding
        Return encoding.GetBytes(str)
 
End Function
 

See Also

• Password Policy