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- YOU MUST INSTALL THE MICROSOFT DIGITAL SIGNATURE CONTROL HOW TO
- YOU MUST INSTALL THE MICROSOFT DIGITAL SIGNATURE CONTROL SOFTWARE
- YOU MUST INSTALL THE MICROSOFT DIGITAL SIGNATURE CONTROL CODE
This instance will run both the CloudHSM client software and Windows Server CA. This diagram shows a virtual private cloud (VPC) containing an Amazon EC2 instance running Windows Server 2012 R2 that resides on a public subnet.
YOU MUST INSTALL THE MICROSOFT DIGITAL SIGNATURE CONTROL CODE
Security Considerations for Code Signing. For more information, see the NIST Cybersecurity Whitepaper It is not intended to represent any best practices for implementing code signing or running a Certificate Authority.
YOU MUST INSTALL THE MICROSOFT DIGITAL SIGNATURE CONTROL HOW TO
The focus of this blog post is how to use AWS CloudHSM to store the keys that are used by certificates that will sign binaries used by Microsoft SignTool.exe. For more information, seeĪWS CloudHSM Pricing and Amazon EC2 Pricing. You can find the cost of each service on the corresponding service pricing page.
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Important: You will incur charges for the services used in this example. After you’ve completed the set-up of your Windows Server CA, you’ll have all the major components ready to start signing your code: the AWS CloudHSM cluster in an Active state, Crypto Users (CU) created on your CloudHSM to manage keys, and the necessary client packages installed on the Windows instance within the same VPC as your AWS CloudHSM. This walkthrough assumes that you have a working knowledge of Amazon EC2, AWS CloudHSM, the administration of Windows Server, as well as the basics of certificates and public key infrastructure.īefore you follow this walkthrough, you should first complete the steps in the walkthrough Configure Windows Server as a Certificate Authority (CA) with AWS CloudHSM, and have an example unsigned Windows PowerShell script. A more efficient solution is to use AWS CloudHSM to provide secure storage and backup for these private keys. The offline devices also need to be stored and backed up in separate, physically secure locations to prevent tampering.
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But this means that the keys need to be brought online for each new signing request, or in batches, prolonging the amount of time it takes to sign. To protect against this, some companies move their private keys to offline devices. If an attacker compromises the server and steals both the private key and certificate, they can sign malicious code while posing as the trusted author. A common problem, however, is that the private key and the certificate used in the signing process are located on the same machine. The certificate allows end users to trust that software is signed by the author, so long as the private key that is used to sign is only available to that author. To solve this issue, many companies turn to Microsoft SignTool, a command-line tool that digitally signs files, verifies signatures in files, or time stamps files. Additionally, the internet itself cannot provide any guarantee about the identity of the software creator. Packaged software uses branding and trusted sales outlets to assure users of its integrity, but these guarantees are not available when code is transmitted on the internet. Code signing is the process of digitally signing executables and scripts to confirm the software author and to demonstrate that the code has not been altered or corrupted since it was signed.