The Update Framework (TUF)
The Update Framework (TUF) is an implementation of a specification designed to secure software update systems through cryptographic signatures and verification mechanisms. The framework consists of both server and client components that work together to create and manage trusted collections of content. Publishers can sign their content offline using highly secure keys, then push the signed trusted collections to a notary server for distribution. The system addresses the inherent security flaws in TLS-based communications by enabling content verification even when communicating with potentially compromised servers or insecure mirrors. Consumers can verify content authenticity using the publisher's public key obtained through secure channels. TUF is prominently used in Docker Content Trust (DCT) and aims to make internet content distribution more secure by providing an easy mechanism for content publishers to sign their releases and for consumers to verify content integrity. The framework includes comprehensive service architecture documentation and has been actively developed since its first release in November 2015.
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