ATBASHCipher/cpp/main.cpp at master · CrypTools/ATBASHCipher · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
/**
 * CrypTools - GitHub
 * Friday, 8 February 2019
 * ATBASH Cipher C++ Implementation
 * How to use:
 * Just write your input text and press enter / return.
 * Decrypting and encrypting is the same process.
*/

#include<cstring>
#include<iostream>

#defineMAX_INPUT_LENGHT \
2147000// small values causes bugs for obscure reasons around the end of the
// for-loop
// ASCII VALUES LATIN ALPHABET
#defineMINCAP65
#defineMAXCAP90
#defineSPACE32
#defineMINLOW97
#defineMAXLOW122

usingnamespacestd;

boolcrypt(constchar* input, char* result);

intmain() {
char input[MAX_INPUT_LENGHT], result[MAX_INPUT_LENGHT];
 cout << "Input: ";
 cin.getline(input, MAX_INPUT_LENGHT);

if (crypt(input, result) == true) {
 cout << endl << "Result: " << result << endl;
return0;
 } else {
 cout << endl << "Non-alphabet input" << endl;
return1;
 }
}

boolcrypt(constchar* input, char* result) {
for (unsignedint i = 0; i < strlen(input); ++i) {
if (input[i] == SPACE) {
 result[i] = SPACE;
 } elseif ((input[i] >= MINLOW) && (input[i] <= MAXLOW)) {
 result[i] = MAXLOW - (input[i] - 97); //97 - MINLOW
 } elseif ((input[i] >= MINCAP) && (input[i] <= MAXCAP)) {
 result[i] = MAXCAP - (input[i] - 65); //65 - MINCAP
 } else
returnfalse;
 }
returntrue;
}