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The roles of root certificate, intermediate certificate and end-entity certificate as in the chain of trust. In computer security, a chain of trust is established by validating each component of hardware and software from the end entity up to the root certificate. It is intended to ensure that only trusted software and hardware can be used ...
A root certificate is the top-most certificate of the tree, the private key which is used to "sign" other certificates. All certificates signed by the root certificate, with the "CA" field set to true, inherit the trustworthiness of the root certificate—a signature by a root certificate is somewhat analogous to "notarizing" identity in the ...
Another important usage is to safely provide updates and patches to existing software. [6] Windows, Mac OS X, and most Linux distributions provide updates using code signing to ensure that it is not possible for others to maliciously distribute code via the patch system. It allows the receiving operating system to verify that the update is ...
The end-user of an operating system or web browser is implicitly trusting in the correct operation of that software, and the software manufacturer in turn is delegating trust for certain cryptographic operations to the certificate authorities responsible for the root certificates.
Apple's Mac OS X and Mac OS X Server running 10.3.6 both with the Common Criteria Tools Package installed were certified at CAPP/EAL3 in January 2005. Apple's Mac OS X & Mac OS X Server running the latest version 10.4.6 have not yet been fully evaluated however the Common Criteria Tools package is available. [10]
The digital certificate chain of trust starts with a self-signed certificate, called a root certificate, trust anchor, or trust root. A certificate authority self-signs a root certificate to be able to sign other certificates. An intermediate certificate has a similar purpose to the root certificate – its only use is to sign other certificates.
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An offline root certificate authority is a certificate authority (as defined in the X.509 standard and RFC 5280) which has been isolated from network access, and is often kept in a powered-down state. In a public key infrastructure, the chain of trusted authorities begins with the root certificate authority (root CA).