void
caesar_cipher::encryption( const std::string &key,
const std::string &in,
const std::string &out )
{
std::ifstream f_in(in, std::ifstream::in);
std::ofstream f_out;
if (out == "") {
std::string out_file = std::string(ENC_PREF) + in;
f_out.open(out_file, std::ifstream::out);
} else
f_out.open(out, std::ofstream::out);
int keyPos = 0;
char keyByte = 0;
char dataByte = 0;
while (f_in.get(dataByte)) {
keyByte = key[keyPos];
dataByte = EncryptByte(dataByte, keyByte);
f_out << dataByte;
keyPos = (++keyPos) % key.length();
}
f_in.close();
f_out.close();
}
void CCipher::EncryptHeader(Byte *buf)
{
for (unsigned i = 0; i < kHeaderSize; i++)
buf[i] = EncryptByte(buf[i]);
}
void CCipher::EncryptHeader(Byte *buffer)
{
for (int i = 0; i < 12; i++)
buffer[i] = EncryptByte(buffer[i]);
}
