著名ERP厂商的SSO单点登录解决方案介绍一
SSO英文全称Single Sign On，单点登录。SSO是在多个应用系统中，用户只需要登录一次就可以访问所有相互信任的应用系统。它包括可以将这次主要的登录映射到其他应用中用于同一个用户的登录的机制。认证系统的主要功能是将用户的登录信息和用户信息库相比较，对用户进行登录认证；认证成功后，认证系统应该生成统一的认证标志（ticket），返还给用户。它是比较流行的企业业务整合的解决方案之一。
企业应用集成（EAI, Enterprise Application Integration）。企业应用集成可以在不同层面上进行：例如在数据存储层面上的“数据大集中”，在传输层面上的“通用数据交换平台”，在应用层面上的“业务流程整合”，和用户界面上的“通用企业门户”等等。事实上，还有一个层面上的集成变得越来越重要，那就是“身份认证”的整合，也就是“单点登录。
在信息安全管理中，访问控制(Access Controls)环绕四个过程：Identification；Authentication；Authorization；Accountability。单点登录（Single Sign On）属于Authorization授权系统，除单点登录外还包括：Lightweight Directory Access Protocol 和 Authorization ticket。
我们介绍一下 SAP SSO Single Sign-On 单点登录
SAP portfolio
SAP Single Sign-On provides simple, secure access to IT applications for business users. It offers advanced security
capabilities to protect your company data and business applications.
Simple and secure access
Single sign-on for native SAP clients and web applications
Single sign-on for mobile devices
Support for cloud and on-premise landscapes
Secure data communication
Encryption of data communication for SAP GUI
Digital signatures
FIPS 140-2 certification of security functions
Advanced security capabilities
Two-factor authentication
Risk-based authentication using access policies
RFID-based authentication
Hardware security module support
Two-Factor Authentication
With two-factor authentication you can implement a strong form of authentication for access to corporate resources – for example, for especially critical systems or securing access from outside the company. SAP Single Sign-On 2.0 supports two-factor authentication via time-based one-time passwords (TOTP) generated by the SAP Authenticator mobile app. Alternatively, out-of-band transport of tokens, including one-time passwords sent via SMS or email or RSA/RADIUS, are supported.
Risk-Based Authentication
SAP Single Sign-On 2.0 (since SP5) offers risk-based authentication. This means that an authentication process can dynamically adapt to the context of an individual authentication request based on custom-defined access policies. First, you check the context information of an authentication attempt. This could be the IP address of the client, location, date/time, device information, or user attributes such as groups, for example. Secondly, based on this context information you then make a dynamic decision on whether you accept or deny access, or alternatively enforce two-factor authentication in case the context indicates a higher risk. You could even reduce the privileges of the person accessing the backend system, thus limiting the business functionality available to this user.
RFID-Based Identification
For scenarios where users need quick access to a system to perform short tasks, you can use fast user identification via radio-frequency identification (RFID). The user is identified via an RFID token, such as a company batch card. RFID authentication is ideally suited to warehouse and production scenarios with dedicated kiosk PCs for authentication.
Digital Signatures
Digital signatures uniquely identify the signer, protect the integrity of the data, and provide the means for a binding signature that cannot be denied afterwards. SAP Single Sign-On supports digital signing using the Secure Store and Forward (SSF) interface. The Secure Login Client for SAP GUI can use X.509 certificates for digital signatures in an SAP environment. Server-side digital signatures are supported by the SAP Common Cryptographic Library. In addition, SAP Single Sign-On includes support for server-side digital signatures via hardware security modules, offering increased security and performance.
Certificate Lifecycle Management for ABAP Application Servers
SAP Single Sign-On 2.0 (since SP6) supports automated renewal of X.509 certificates for SAP NetWeaver Application Server ABAP using Secure Login Server. This reduces manual efforts and prevents downtime.
Mobile SSO with SAP Single Sign-On
The SAP Single Sign-On solution brings simplicity for your end-users by eliminating the need for multiple passwords and user IDs. In addition, you can lower the risks of unsecured login information, reduce help desk calls, and help ensure the confidentiality and security of personal and company data. In order to meet evolving security demands, you can extend your single sign-on solution even further and offer your end-users “mobile single sign-on”. Your mobile users will have only one password to remember, less typing of complicated user IDs and passwords, and more time for actual work!
SAP Single Sign-On 2.0 (since SP4) supports single sign-on from mobile devices, offering both a simple and secure solution for mobile access to your corporate business processes. The solution is based on time-based one-time passwords (TOTP) generated by the SAP Authenticator mobile app. The SAP Authenticator mobile app is available for both iOS and Android, and supports the IETF standard RFC 6238.
We assume that the user already started the SAP Authenticator application earlier in same day and now he wants to start using one of his bookmarked web applications, for example SAP Mobile Portal.
When the user clicks on the Mobile Portal bookmark, the SAP Authenticator generates a new passcode and creates a URL (for example https://portal_host/irj/portal?j_username=[username]&j_passcode=[passcode]), providing in the URL the UserName and the Passcode necessary for authentication. Then SAP Authenticator sends the URL to the browser and the browser opens the requested resource. The user sees only the authentication result when the requested resource appears.
• RSA, AES, SHA-2
• Perfect Forward Secrecy for TLS
• Ephemeral key agreement
• Elliptic curve Diffie-Hellman key exchange
• Elliptic curves P-224, P-256, P-384, P-521
• TLS 1.2 cipher suites in Galois Counter Mode (GCM)
• New command “sapgenpse tlsinfo” to help configure
cipher suite profile parameters for TLS
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希望对您公司企业信息化IT架构与管理有帮助。 其它您可能感兴趣的文章：
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作者：Petter Liu
出处：http://www.cnblogs.com/wintersun/
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