how to generate barcode in asp.net c# Assigning the Key Recovery Agent Role in .NET

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Assigning the Key Recovery Agent Role
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To assign the key recovery agent role, a user must have a certificate with the Key Recovery Agent application policy OID. The default Key Recovery Agent version 2 certificate template includes this application policy OID and can be further secured by limiting the users and groups with enrollment permissions.
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Establishing a PKI
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In addition, a CA must be configured to enable key recovery. This is done by designating one or more Key Recovery Agent certificates to act as the CA s key recovery agent. Only the holders of the private keys associated with the selected Key Recovery Agent certificates are able to decrypt the extracted PKCS #7 blobs.
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Note The design decisions for deploying key recovery agents and enabling key archival and recovery are discussed in 14, Archiving Encryp< tion Keys.
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Case Study: Planning PKI Management Roles
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In this case study, you will look at the definition of PKI Management roles.
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You are the security services manager for Tailspin Toys. Your organization implements a two-tier CA hierarchy, as shown in Figure 10-1.
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Name: Tailspin Toys Corporate Root CA CA Validity Period: 20 Y ears
Name: Tailspin Toys Infrastr cture CA u CA Validity Period: 10 Y ears
Name: Tailspin Toys Emplo CA yee CA Validity Period: 10 Y ears
Figure 10-1
The Tailspin Toys CA hierarchy
The CA hierarchy implements two issuing CAs:
Tailspin Toys Infrastructure CA. This CA issues certificates to domain controllers, servers, computers, and network devices. Tailspin Toys Employee CA. (users) of Tailspin Toys. This CA issues certificates to employees
10: Role Separation
The issuing CAs are managed by two different teams: the network services team manages the Tailspin Toys Infrastructure CA and the directory services team manages the Tailspin Toys Employee CA. Your team, security services, has the ability to manage both CAs. Within each department, different users are assigned the PKI Common Criteria roles of CA administrator and certificate manager. Backups are performed by a centralized backup services account. Auditing is performed by members of both the Security Services team and the Internal Audit department. The security policy of Tailspin Toys requires strong enforcement of Common Criteria role separation for PKI management.
Case Study Questions
1. The backup software implemented by Tailspin Toys uses a centralized backup services account. When reviewing the event logs, the backup operator notices that the backup fails every night on the two issuing CAs. On inspecting the event logs further, the backup software reports that the failed backup item is the System State backup. What is the likely cause of the error 2. When inspecting the security permission assignments at the Tailspin Toys Infrastructure CA, you accidentally assign the CA Administrator group the Issue and Manage Certificates permission. When you try and fix the permissions assignment error, you find that access is denied. What must be done to fix the issue 3. The certificate for the Tailspin Toys Employee CA is reaching the halfway point of its validity period and must be renewed. You are logged on to the CA as a CA Administrator but all attempts to renew the CA certificate fail. Who must perform the renewal of the CA certificate 4. The Tailspin Toys Employee CA implements key archival for both EFS certificates and e-mail encryption certificates. The security policy of your organization requires that all key recovery operations be performed by at least two employees. If you are assigned the key recovery agent role, what Common Criteria role can you not hold, as this would break the security policy for key recovery
Part II:
Establishing a PKI
5. Tailspin Toys implements several version 1 certificate templates at the Tailspin Toys Infrastructure CA. You have delegated the task of managing Certificate Templates to Andy, a member of the IT security team. Andy is able to create new version 2 certificates but is unable to modify the permissions for any of the version 1 certificate templates deployed at the Tailspin Toys Infrastructure CA. Why is Andy unable to modify the version 1 certificate templates 6. Tailspin Toys wishes to deploy a new enterprise subordinate CA named Tailspin Toys Contractor CA to issue certificates to contractors and vendors working on-site. When you attempt to install the enterprise CA, the options for both enterprise root CA and enterprise subordinate CA are unavailable. What group memberships are required to install an enterprise CA 7. You have enabled auditing at all issuing CAs in the CA hierarchy. Today, you received a call from the audit department indicating that no events related to Certificate Services exist in the Windows Security log. You view the properties of each CA and find that the auditing is configured at each CA, as shown in Figure 10-2.
Figure 10-2
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