Karishma Mulani , BCA 2 Year
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This document is a project report on encryption-decryption presented by Karishma Mulani, a student studying for a Bachelor's degree in Computer Application. The report includes an acknowledgment, introduction to file transfer and message sending, encrypted message examples, and the C++ source code used to encrypt and decrypt messages. It discusses encrypting a message by shifting each character by 20 positions in the alphabet and decrypting by shifting back.
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Karishma Mulani , BCA 2 Year
- 1. _______________________________ Encryption- Decryption ______________________________________ Presented By Karishma Mulani Bachelors of Computer Application – Second Year Dezyne E’cole College, Ajmer
- 2. Project report on Programming On C++ Language Submitted To Dezyne E’cole College Towards The Partial Fulfilment Of 2018 Year, Bachelor of Computer Application By Karishma Mulani Dezyne E’cole College 106/10, Civil Line, Ajmer www.dezyneecole.com
- 3. Acknowledgment I Am Karishma Mulani, Student of Bachelor Of Computer Application, Dezyne E’cole College. I Would Like To Express My Gratitude to Each And Every Person Who Has Contributed in Encouraging Me And Helping Me to Coordinate My Project. I Also Thank Dezyne E’cole College Who Provided Insight And Expertise That Greatly Assisted the Project. A Special Thanks To My Teachers, Parents and Colleagues Who Have Supported Me at Every Step. Not To Forget, the Almighty Who Blessed Me With Good Health Because of Which I Worked More Efficiently And Better.
- 8. ENCRYPTED MESSAGE: SOURCE CODE: #include<iostream.h> #include<conio.h> #include<string.h> #include<Dos.h> #include<fstream.h> #include<stdio.h> #include<stdlib.h> #include "bor.h" class store {
- 9. public: char c[50],n[50]; char ln[20]; int pass; void get() { gets(c); } void pri() { cout<<c; } void incr() { for(int i=0;c[i]!='0';i++) { n[i]=(int)(char)c[i]-20; } n[i]='0'; cprintf(n); } void dec() { for(int i=0;n[i]!='0';i++) { n[i]=(int)n[i]+20; }
- 10. cprintf(n); } }; class login { public: int id,temp; char un[20]; char pw[20]; int autoid() { int t; login x; t=0; fstream f1; f1.open("lg.txt",ios::in); if(f1==NULL) t=0; else { while(f1.read((char *)&x,sizeof(x))); { if(x.id>t) t=x.id; } } f1.close();
- 11. t++; return t; } int get() { clrscr(); box1(); cal1(); int val=0; temp=autoid(); gotoxy(27,5); cout<<temp<<endl; id=temp; gotoxy(27,12); gets(un); login m; int c=0; fstream f,f1; f.open("lg.txt",ios::in); { while(f.read((char *)&m,sizeof(m))) { if(strcmp(m.un,un)==0) { textcolor(11+BLINK); gotoxy(27,14); cprintf("Username Already Exist");
- 12. val=1; goto y; } else { f.write((char *)&m,sizeof(m)); } } } f.close(); gotoxy(27,19); gets(pw); y: if(val==1) { return 1; } else { return 0; } } void insert(login m) { fstream f; f.open("lg.txt",ios::out|ios::app); f.write((char *)&m,sizeof(m));
- 13. f.close(); textcolor(11+BLINK); gotoxy(31,23); cprintf("Data Successfully Insert"); } void log() { m: clrscr(); cal1(); box(); char lu[20],lp[20]; gotoxy(27,10); gets(lu); int i1=0; gotoxy(27,15); while(1) { lp[i1]=getch(); if(char(lp[i1])==13) { break; } cprintf("*"); i1++; }
- 14. lp[i1]='0'; // gets(lp); login m; int c=0; fstream f1,f; f1.open("lg.txt",ios::in); while(f1.read((char *)&m,sizeof(m))) { if(strcmp(m.un,lu)==0&&strcmp(m.pw,lp)==0) { cout<<"Login"; char e[20]; store x; cal(); for(int i=58;i<59;i++) { textcolor(11); gotoxy(i,2); cprintf("%s",lu); } textcolor(11); gotoxy(65,18); cout<<"Do You Want"; gotoxy(64,20); cprintf("Read This File"); gotoxy(66,22); cprintf("(");
- 18. cprintf("L"); textcolor(11); cprintf("OG OUT"); textcolor(12+BLINK); gotoxy(48,25); cprintf("C"); textcolor(11); cprintf("ONTINUE"); char ck; ck=getch(); if(ck=='l'||ck=='L') { main(); } else if(ck=='c'||ck=='C') { goto m; } } } } else { clrscr(); cal1(); for(i=18;i<19;i++) { gotoxy(i,
- 19. 14); cprintf("%s","Do you want to Continue Press 1 otherwise Press any key..."); } char c; c=getch(); if(c=='1') { main(); } } c++; break; } } if(c==0) { clrscr(); cal1(); for(int i=32;i<33;i++) { gotoxy(i,12); cprintf("%s","Wrong Email Id"); } for(i=18;i<19;i++) {
- 20. gotoxy(i,14); cprintf("%s","Do you want to Continue Press 1 otherwise Press any key..."); } char c; c=getch(); if(c=='1') { main(); } } f1.close(); } }; void main() { clrscr(); log(); cal1(); char c; gotoxy(31,3); cprintf("ENCRYPTION-DECRYPTION"); char trip[100]="This Project is Created by Karishma Mulani"; //text print int inc=1,l=1,le,che,rou=0,st=0; for(int k1=0,len=1;trip[k1]!='0';k1++) { //length of text
- 21. len++; } le=len; ///strip while(1) //infinite loop { char o; if(kbhit()) { c=getch(); login x,y; if(c=='s'|c=='S') { clrscr(); int ci; ci=x.get(); if(ci==0) y.insert(x); } else if(c=='l'|c=='L') { clrscr(); y.log(); } else { exit(0); }
- 22. } textbackground(0); //strip backgroud for(int bs=1;bs<=79;bs++) { gotoxy(bs,25); cprintf(" "); } che=inc+len; //length checking if(che>79) //length overflow than less length { le--; } textcolor(11); gotoxy(inc,25);//print text for(k1=st;k1<le;k1++) { cprintf("%c",trip[k1]); } if(st>0) //left text move { st--; } if(st==0) //move text value increment { inc++; } if(inc==79)
- 23. { inc=1; le=len; rou=1; st=le-1; } //reset position of start delay(100); //l++; } getch(); }
- 24. Thank You Presented By Karishma Mulani Bachelors of Computer Application Dezyne E’cole College www.dezyneecole.com