DSA (Digital Signature Algorithm)

The Digital Signature Algorithm (DSA) is a method used to verify that digital messages or documents come from a trusted sender and haven't been altered. It uses a pair of keys: a private key to create the signature and a public key for others to verify it. When sending a message, the sender signs it with their private key. The recipient uses the sender’s public key to confirm the signature’s validity, ensuring the message’s integrity and authenticity. DSA is widely used in secure communications, online transactions, and digital certificates to protect data and verify identities.