?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=IMPLEMENTASI+ENKRIPSI+DAN+DEKRIPSI%0D%0ADENGAN+METODE+RC4+UNTUK+PENGAMANAN+DATA++%0D%0ASISTEM+INFORMASI%0D%0A&rft.creator=Uli+Sholihah+Saragih%2C+1317051067&rft.subject=QA75+Electronic+computers.+Computer+science&rft.description=ABSTRAK%0D%0A+%0D%0A%0D%0APada+tahun+2015%2C+Sistem+Informasi+Kegiatan+Dosen+(SIKSEN)+Jurusan+Ilmu%0D%0AKomputer+Unila+mengalami+penyerangan+data+(hack)+yang+mengakibatkan+data%0D%0Akegiatan+dosen+tidak+dapat+muncul+di+sistem+informasi+tersebut.+Penyerangan+data%0D%0Ayang+terjadi+adalah+salah+satu+akibat+dari+kurangnya+keamanan+data+pada+Sistem%0D%0AInformasi+Jurusan+Ilmu+Komputer.+Salah+satu+cara+untuk+mengamankan+data+adalah%0D%0Adengan+menggunakan+teknik+kriptografi.+Kriptografi+merupakan+cara+yang%0D%0Adilakukan+dengan+menyandikan+pesan+asli+menjadi+pesan+acak+yang+sulit+dipahami.%0D%0ADidalam+kriptografi+terdapat+dua+proses+utama+yaitu+enkripsi+dan+dekripsi.+Enkripsi%0D%0Amerupakan+mengubah+pesan+asli+menjadi+pesan+sandi%2C+sedangkan+dekripsi+adalah%0D%0Aproses+pengembalian+dari+pesan+sandi+ke+pesan+aslinya.+Metode+yang+dipakai+adalah%0D%0Ametode+Rivest+Code+4+(RC4)+karena+metode+ini+merupakan+salah+satu+metode+yang%0D%0Ahasil+penyandian+(ciphertext)+memiliki+ukuran+panjang+karakter+yang+sama+dengan%0D%0Apesan+aslinya+(plaintext).+Metode+ini+terdiri+dari+tiga+tahap+utama+yaitu+KSA+(Key%0D%0ASchedulling+Algorithm)%2C+PRGA+(Pseudo+Random+Generation+Algorithm)+dan%0D%0Aproses+XOR.+Data+yang+digunakan+dalam+penelitian+ini+adalah+data+mahasiswa%0D%0AJurusan+Ilmu+Komputer+Unila+yang+berjumlah+970+data+mahasiswa+yang+terdiri+dari%0D%0A25+kolom+data.+Pengujian+dilakukan+dengan+menguji+apakah+jumlah+karakter+pesan%0D%0Aasli+sama+dengan+pesan+sandinya+dan+berapa+banyak+data+yang+berhasil+dienkripsi%0D%0Adan+didekripsi.+Hasil+pengujian+didapatkan+bahwa+970+data+berhasil+dienkripsi+dan%0D%0A970+data+berhasil+didekripsi+dengan+jumlah+karakter+yang+sama+antara+pesan+asli%0D%0Adan+pesan+sandi.++%0D%0AKeyword%3A+RC4%2C+Enkripsi%2C+Dekripsi%2C+Kriptografi%2C+Database%0D%0A++%0D%0A%0D%0AABSTRACT%0D%0A+%0D%0A%0D%0AIn+2015%2C+Lecturer+Activity+Information+System+(SIKSEN)+Department+of+Computer%0D%0AScience+Unila+experiencing+data+attacks+(hack)+which+resulted+in+data+lecturer%0D%0Aactivities+can+not+appear+in+the+information+system.+Attacking+the+data+that+occurred%0D%0Ais+one+result+of+the+lack+of+data+security+in+Information+Systems+Computer+Science%0D%0ADepartment.+One+way+to+secure+data+is+to+use+cryptographic+techniques.%0D%0ACryptography+is+the+way+it+does+by+encoding+the+original+message+into+an+elusive%0D%0Arandom+message.+In+cryptography+there+are+two+main+processes+namely+encryption%0D%0Aand+decryption.+Encryption+represents+converting+the+original+message+into+a%0D%0Apassword+message%2C+while+decryption+is+the+process+of+returning+the+password%0D%0Amessage+to+the+original+message.+The+method+used+is+Rivest+Code+4+(RC4)+because%0D%0Athis+method+is+one+of+the+methods+that+the+encoding+result+(ciphertext)+has+the+same%0D%0Acharacter+length+as+the+original+message+(plaintext).+This+method+consists+of+three%0D%0Amain+stages%3A+KSA+(Key+Scheduling+Algorithm)%2C+PRGA+(Pseudo+Random%0D%0AGeneration+Algorithm)+and+XOR+process.+The+data+used+in+this+study+is+the+data+of%0D%0AUnila+Computer+Science+students%2C+amounting+to+970+student+data+consisting+of+25%0D%0Acolumns+of+data.+Testing+is+done+by+testing+whether+the+number+of+original+message%0D%0Acharacters+is+the+same+as+the+password+and+how+much+data+is+successfully+encrypted%0D%0Aand+decrypted.+The+test+results+obtained+that+970+data+successfully+encrypted+and%0D%0A970+data+successfully+decrypted+with+the+same+number+of+characters+between+the%0D%0Aoriginal+message+and+password.%0D%0A%0D%0AKeyword%3A+RC4%2C+Encryption%2C+Decryption%2C+Cryptography%2C+Database+%0D%0A++&rft.publisher=FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM&rft.date=2017-08-23&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F28468%2F1%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F28468%2F2%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F28468%2F3%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=++Uli+Sholihah+Saragih%2C+1317051067++(2017)+IMPLEMENTASI+ENKRIPSI+DAN+DEKRIPSI+DENGAN+METODE+RC4+UNTUK+PENGAMANAN+DATA+SISTEM+INFORMASI.++FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F28468%2F