In cybersecurity, a “digital signature” refers to a cryptographic method used to verify the authenticity and integrity of digital messages or documents. It serves as a digital equivalent to a handwritten signature or stamped seal, providing assurance that a specific entity created the document and that it has not been altered. Digital signatures utilize public key infrastructure (PKI) to encrypt and decrypt messages, ensuring secure communication. This technology is vital in legal, financial, and secure communication transactions, enhancing trust and accountability in digital interactions.