substitutionCipher.cpp
Cipher Encryption In Dev C Free
#include<cctype> |
#include<string> |
#include<iostream> |
usingnamespacestd; |
voidencrypt(char * input, unsignedint offset) { |
for (int i = 0; input[i] != 0; i++) { |
// Skip spaces... |
if (input[i] '') |
continue; |
char firstLetter = islower(input[i]) ? 'a' : 'A'; |
unsignedint |
alphaOffset = input[i] - firstLetter, |
newAlphaOffset = alphaOffset+offset; |
input[i] = firstLetter + newAlphaOffset % 26; |
} |
} |
voiddecrypt(char * input, unsignedint offset) { |
for (int i = 0; input[i] != 0; i++) { |
// Skip spaces... |
if (input[i] '') |
continue; |
char firstLetter = islower(input[i]) ? 'a' : 'A'; |
unsignedint alphaOffset = input[i] - firstLetter; |
int newAlphaOffset = alphaOffset - offset; |
if (newAlphaOffset < 0) { |
newAlphaOffset += 26; |
} |
input[i] = firstLetter + (newAlphaOffset % 26); |
} |
} |
intmain() { |
std::string alphabeticalString = 'acbdefghijklmnopqrstuvwxyz'; |
unsignedint encryptionOffset; |
cout << 'Da-mi un sir alfabetic sa-l criptez...nt> '; |
getline(cin, alphabeticalString); |
cout << 'Da-mi cheia de criptare (un numar intre 0 si 25)nt> '; |
cin >> encryptionOffset; |
cout << 'Criptata din: '' << alphabeticalString.c_str(); |
encrypt(const_cast<char*>(alphabeticalString.c_str()), encryptionOffset); |
cout << '' in: '' << alphabeticalString << ''' << endl; |
cout << 'Decriptat inapoi din: '' << alphabeticalString.c_str(); |
decrypt(const_cast<char*>(alphabeticalString.c_str()), encryptionOffset); |
cout << '' in: '' << alphabeticalString << ''' << endl; |
return0; |
} |
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Nov 27, 2012 It may happens you may spend an hour or two regulary everyday on Internet,but obivous you will use few more social networking sites,few mo. The AES encryption is a symmetric cipher that uses the same key for encryption and decryption. Here is an example of the AES encryption code (check comments in the code for details).
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Nov 27, 2012 It may happens you may spend an hour or two regulary everyday on Internet,but obivous you will use few more social networking sites,few mo. In this tutorial you will learn about vigenere cipher in C and C for encryption and decryption.Vigenere Cipher is kind of polyalphabetic substitution method. It is used for encryption of alphabetic text. For encryption and decryption Vigenere Cipher Table is used in which alphabets from A. Jun 02, 2016 The Caesar Cipher technique is one of the earliest and simplest method of encryption technique. It’s simply a type of substitution cipher, i.e., each letter of a given text is replaced by a letter some fixed number of positions down the alphabet. For example with a shift of 1, A would be replaced by B, B would become C, and so on.