It is easier to implement back up and recover keys in a
Mcts 70-680: bitlocker and recovery
Chris has returned. We will now proceed to Disaster Recovery. Planning for disaster recovery is one of the several activities you can complete during the planning process. Not only is the backup/restore process critical when preparing for disaster recovery, but the nature of the PKI itself can have an impact on how robust the PKI infrastructure is. Furthermore, careful preparation will reduce the severity of a device failure.
Clients search CRLs and delta CRLs to see if a credential has been revoked. When an application cannot ascertain the revocation status of a certificate, it will usually fail, but some applications have the ability to disable revocation testing and others do not.
CRLs and delta CRLs, like certificates, have a validity period during which they are valid. An application testing the revocation status of a certificate against the expired CRL and/or delta CRL will fail once the CRL and/or delta CRL expires. The point of this topic is that when a Certification Authority fails, the first consequence you’ll find is that applicants won’t be able to verify the revocation status of any certificates.
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S/MIME (Secure/Multipurpose Internet Mail Extensions) is the industry standard for public key encryption of MIME-based (message-based) data, and it’s becoming a common choice for companies looking to encrypt internal communications.
Although the ease of use for end users and native compatibility with corporate email clients are appealing, concerns about the use of private keys often arise, specifically, “what happens if I lose my private key?”
To encrypt and decrypt content, S/MIME employs public-key cryptography. If anyone wants to give you an encrypted letter, they encrypt it with your public key. Then you decrypt using your private key. This ensures you won’t be able to read any encrypted emails you’ve sent because you have your private key. It’s easy to see how this could get out of hand.
Private keys are usually stored in the device or operating system you’re using (or on cryptographic hardware like USB or HSM), but they can be exported and saved in a secure location as a backup. If an operating system has to be reinstalled, the user account to which the encryption key was originally given is no longer usable, or the key is otherwise no longer accessible, key archival and recovery will help secure encrypted data from permanent loss.
Backing up bitlocker recovery keys to active directory with
Digital certificates are becoming increasingly important for identifying and controlling who can access and run company networks. Wireless access points that block access to external devices and allow only people and machines that are supposed to have access to your network are becoming increasingly popular among businesses.
Digital certificates are the main means of identifying and authenticating people and computers. The challenge of maintaining and securing certificates at scale increases as the number of identities in an organization rises.
Certificate management has never been more important than it is now, thanks to the adoption of BYOD and IoT. Employees must link to the company’s network if they carry their own devices to work. It’s important to ensure that every individual and computer has a certificate so that every link can be traced.
Breach after breach occurs on a regular basis. When you look back, you’ll notice that many of these breaches were caused by a lack of cryptographic security. Stolen keys or expired certificates either triggered an outage or prevented the detection of a breach.
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The entire lifecycle of cryptographic keys is controlled by encryption key management. This involves key development, use, storage, archiving, and deletion. The encryption keys are secured by restricting access to them physically, theoretically, and by user/role access.
“To effectively use cryptography for security, proper management of cryptographic keys is needed. The combination of a safe is similar to the combination of keys. If an attacker knows a secure combination, even the best safe will not prevent you from being hacked. Bad key management, likewise, can easily jeopardize powerful algorithms.” Recommendation for Key Management by the National Institute of Standards and Technology (NIST)
The statement made by the National Institute of Standards and Technology (NIST) is right. Your encryption keys, like a safe’s combination, are just as secure as the protection you use to protect them. Each key’s entire lifecycle, as well as the entire physical and digital cryptosystem, must be accounted for. As a result, a solid encryption key management framework and policies should include the following: