Final answer:
Yes, the Digital Signature Standard established by NIST, used for electronic document authentication, is based on a variant of the ElGamal algorithm.
Step-by-step explanation:
The statement that the Digital Signature Standard established by NIST is used for electronic document authentication by federal information systems and is based on a variant of the ElGamal algorithm is true. The Digital Signature Standard (DSS) includes the Digital Signature Algorithm (DSA), which is indeed a variant of the ElGamal signature scheme.
DSA was developed to facilitate the digital signing of documents and ensure the authenticity and integrity of electronic records. This process has become crucial in an era where the transition from paper-based to digital transactions continues to grow rapidly.
The digital signature standard established by NIST is used for electronic document authentication by federal information systems. It is based on a variant of the ElGamal algorithm. This algorithm is a type of asymmetric encryption that requires two different keys - a public key for encryption and a private key for decryption. The digital signature standard provides a secure way to validate the integrity and authenticity of electronic documents.