A PUBLIC KEY ENCRYPTION - AUTHENTICATION SCHEME BASED ON ELGAMAL CRYPTOGRAPHIC ALGORITHM
Keywords:Public key cryptography, symmetric key cryptography, encryption–authentication scheme, discrete logarithm problem
The article proposes a public-key cryptographic scheme based on the ElGamal algorithm. This scheme can perform security functions and authenticate the origin and integrity of the encrypted message simultaneously. Moreover, the proposed scheme is also used as the basis for developing an algorithm to establish a shared secret key for symmetric key cryptosystems.