Signcryption Dokumen Gambar Menggunakan Algoritma LLKAKE dan RSA

Abstract

Digital information is everything that is seen and heard can be digitized, which means that digital information can include music, movies, photos, documents. However, the increasing amount of digital information will always be associated with increasing security breaches, so that science and art are needed for security and also maintaining the authenticity of digital information, namely with signcryption cryptography. Signcryption is designed to provide effective security. Sign encryption is divided into two stages, namely digital signatures and asymmetric cryptography. LLKAKE digital signatures utilize different keys and numbers than RSA. In this algorithm, the generation of p and q uses Sophie Germain Prime in this algorithm has the formula P = 2 × p '+ 1, p' is also a prime number. This asymmetric cryptography technique uses the RSA algorithm, an asymmetric algorithm that uses large number factorization which is a multiplication of two large prime numbers. The implementation of this research will be in the form of a website that is able to sign and encrypt digital documents in the form of images with various formats and also decrypt and verify digital signatures.