A Pathway to Universal Two-Factor Authentication in .NET framework

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A Pathway to Universal Two-Factor Authentication
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changes on a financial statement, are filling the role of data guardian when working in concert with the service directory. Figure 12-2 shows that these roles and rights would be difficult to do with just inheritance features and must be doled out with the aid of a directory where the identity is known and treated for access rights in a predetermined way after authentication. If you are not the data creator or owner and you have access to or custody of the data, you are considered for this discussion an agent. Agents can receive rights from other agents, but only if the granting agent has those rights.
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Exploring Subordinate Roles
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Subordinate rights are those that are received through grants from others. Subordinate roles include the following:
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Rights grantor One who can grant or has granted rights or subrights to a grantee Rights grantee One who has received rights or subrights from a grantor, usually a from a data owner Rights arbitrator A person or device that resolves disputed access rights Beneficiary A person or entity that received fundamental access rights on the departure, incapacity, or death of the data owner Rights dependant An entity or person whose access rights are controlled by others Entity An organization, not one person, that holds data as if an owner or creator Rights immigrant One whose access rights are granted temporarily or are limited in some way Rights personal representative A person, entity, or device permitted to grant access rights to others for a specific purpose Rights proprietor An operator of an access control system or access gateway Rights proxy A person, entity, or device permitted to grant access rights to others on a temporary basis Rights alien A person, device, or entity granted access rights without any appreciable identity information known about that person, device, or entity
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END USER 3rd Party Agent B Figure 12-2 A user cannot inherit rights not granted to his agent.
By borrowing the basis for these terms from the legal profession and standardizing on the discussion of them, there s hope that the design of access controls reflects the terminology and capabilities over time. Ideally, off-the-shelf products for identity management, identity provisioning, and access control
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A Pathway to Universal Two-Factor Authentication
would express their features and capabilities in concert with the standard terminology. By using rights and roles that follow general principles from legal terminology, the applications technology would mirror what is needed in the real world for controls in a uniform way. The audit function would also be facilitated by this standardization.
Looking at Interim Steps
Integrating two-factor token cards coupled with a population-specific service directory model into your access controls makes perfect sense even if the ideal presented in this chapter to reach a standardized and global access control model is never achieved. The minor inconvenience of users having to carry (and keep track of) token cards is far outweighed by the value of tighter controls on critical data, applications, and processes. The strength of the matchup between username, PIN, random-number string, and AAA server seed record is hard to improve upon in the existing IT environment. Adopting this technology early into a well-designed overall access control architecture will keep your data safer and fix responsibility for auditable access. It also would facilitate an eventual move to a global access model should that alternative become more widely accepted.
Recognizing Responsibilities
The success of any access controls system is first dependant on having wellarticulated requirements reflecting the needs of your business processes woven into the implementation of the technology. The technology tools necessary to lock down application data are available today from an array of vendors, but the responsibility for getting the design right for your organization cannot be fully outsourced. Someone or a coordinating group must be able to express your organization s business processes, understand the implications of the regulatory requirements on those processes, and be able to map out the necessary control points that comply with the letter and spirit of the regulations. Product and vendor choices and implementation steps must be made to fit the map. Choosing products first will prove troublesome because you are likely to be stymied by current limitations in the individual products. All of the components discussed in this book are essential for achieving and maintaining a successful authentication, authorization, and access control architecture. There are no shortcuts, and nothing should be left out of the mix. Each part provides some of the functionality needed to complete a system of adequate controls. Your minimum shopping list will include products that provide the following: