Digital signatures ensure data integrity and authenticity by hashing content and signing the hash with a private key so recipients can verify it with the corresponding public key. This article explains the signing and verification steps and includes a quick Docker lab using OpenSSL to create and test signatures yourself. #OpenSSL #Docker
Keypoints
- Digital signatures protect both the integrity and authenticity of files and messages.
- The signing process hashes the message, encrypts the hash with the sender’s private key, and produces a signature.
- Verification uses the sender’s public key to decrypt the signature and compares hashes to detect tampering.
- The article includes a hands-on Docker lab using OpenSSL to generate keys, sign a message, and verify signatures.
- Digital signatures underpin real-world systems like software updates, code signing, and TLS certificates.
Read More: https://www.decodedsecurity.com/p/digital-signatures-explained-with