What Is Code Signing?

Code signing uses a digital signature to help recipients verify the identity associated with a software publisher and determine whether the signed code changed afterward. Certification exams may ask candidates to connect code signing with authenticity, integrity, certificates, hashing, and public-key cryptography. The publisher calculates a hash of the software and signs that value with a private key, while the recipient uses the corresponding public key to verify the signature. A valid signature does not prove that software is safe, because a trusted developer may sign vulnerable code or an attacker may steal a signing key. Organizations should protect private keys, restrict signing access, use trusted build systems, timestamp signatures, monitor certificate use, and revoke compromised certificates promptly. Produced by BareMetalCyber.com, where you’ll find more cyber audio courses, books, and information to strengthen your educational path. Also, if you want to stay up to date with the latest news, visit DailyCyber.News for a newsletter you can use, and a daily podcast you can commute with. And dont forget Cyberauthor.me for the companion study guide and flash cards!