mirror of
https://github.com/QuasarApp/Qt-AES.git
synced 2025-04-29 07:04:34 +00:00
419 lines
15 KiB
C++
419 lines
15 KiB
C++
#include "qaesencryption.h"
|
|
#include <QDebug>
|
|
|
|
// The lookup-tables are marked const so they can be placed in read-only storage instead of RAM
|
|
// The numbers below can be computed dynamically trading ROM for RAM -
|
|
// This can be useful in (embedded) bootloader applications, where ROM is often limited.
|
|
static const uint8_t sbox[256] = {
|
|
//0 1 2 3 4 5 6 7 8 9 A B C D E F
|
|
0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76,
|
|
0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0,
|
|
0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,
|
|
0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75,
|
|
0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84,
|
|
0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,
|
|
0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8,
|
|
0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2,
|
|
0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,
|
|
0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb,
|
|
0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79,
|
|
0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,
|
|
0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a,
|
|
0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e,
|
|
0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,
|
|
0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16 };
|
|
|
|
static const uint8_t rsbox[256] =
|
|
{ 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb,
|
|
0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb,
|
|
0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e,
|
|
0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25,
|
|
0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92,
|
|
0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84,
|
|
0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06,
|
|
0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b,
|
|
0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73,
|
|
0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e,
|
|
0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b,
|
|
0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4,
|
|
0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f,
|
|
0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef,
|
|
0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61,
|
|
0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d };
|
|
|
|
// The round constant word array, Rcon[i], contains the values given by
|
|
// x to th e power (i-1) being powers of x (x is denoted as {02}) in the field GF(2^8)
|
|
static const uint8_t Rcon[256] = {
|
|
0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a,
|
|
0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39,
|
|
0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a,
|
|
0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8,
|
|
0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef,
|
|
0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc,
|
|
0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b,
|
|
0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3,
|
|
0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94,
|
|
0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20,
|
|
0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35,
|
|
0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f,
|
|
0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04,
|
|
0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63,
|
|
0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd,
|
|
0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d };
|
|
|
|
inline uint8_t xTime(uint8_t x){
|
|
return ((x<<1) ^ (((x>>7) & 1) * 0x1b));
|
|
}
|
|
|
|
#define Multiply(x, y) \
|
|
( ((y & 1) * x) ^ \
|
|
((y>>1 & 1) * xTime(x)) ^ \
|
|
((y>>2 & 1) * xTime(xTime(x))) ^ \
|
|
((y>>3 & 1) * xTime(xTime(xTime(x)))) ^ \
|
|
((y>>4 & 1) * xTime(xTime(xTime(xTime(x)))))) \
|
|
|
|
|
|
QAESEncryption::QAESEncryption(QAESEncryption::AES level, QAESEncryption::MODE mode) : m_level(level), m_mode(mode)
|
|
{
|
|
m_state->clear();
|
|
qDebug() << "WTF";
|
|
|
|
switch (level)
|
|
{
|
|
case AES_128: {
|
|
AES128 aes;
|
|
m_nk = aes.nk;
|
|
m_keyLen = aes.keylen;
|
|
m_nr = aes.nr;
|
|
m_expandedKey = aes.expandedKey;
|
|
qDebug() << "AES128";
|
|
}
|
|
break;
|
|
case AES_192: {
|
|
AES192 aes;
|
|
m_nk = aes.nk;
|
|
m_keyLen = aes.keylen;
|
|
m_nr = aes.nr;
|
|
m_expandedKey = aes.expandedKey;
|
|
}
|
|
break;
|
|
case AES_256: {
|
|
AES256 aes;
|
|
m_nk = aes.nk;
|
|
m_keyLen = aes.keylen;
|
|
m_nr = aes.nr;
|
|
m_expandedKey = aes.expandedKey;
|
|
}
|
|
break;
|
|
default: {
|
|
AES128 aes;
|
|
m_nk = aes.nk;
|
|
m_keyLen = aes.keylen;
|
|
m_nr = aes.nr;
|
|
m_expandedKey = aes.expandedKey;
|
|
qDebug() << "AES128";
|
|
}
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
uint8_t QAESEncryption::getSBoxValue(uint8_t num)
|
|
{
|
|
return sbox[num];
|
|
}
|
|
|
|
uint8_t QAESEncryption::getSBoxInvert(uint8_t num)
|
|
{
|
|
return rsbox[num];
|
|
}
|
|
|
|
QByteArray QAESEncryption::expandKey(const QByteArray key)
|
|
{
|
|
int i, k;
|
|
uint8_t tempa[4]; // Used for the column/row operations
|
|
QByteArray roundKey(key);
|
|
|
|
// The first round key is the key itself.
|
|
for(i = 0; i < m_nk; ++i)
|
|
{
|
|
roundKey.insert((i * 4) + 0, key.at((i * 4) + 0));
|
|
roundKey.insert((i * 4) + 1, key.at((i * 4) + 1));
|
|
roundKey.insert((i * 4) + 2, key.at((i * 4) + 2));
|
|
roundKey.insert((i * 4) + 3, key.at((i * 4) + 3));
|
|
}
|
|
|
|
// All other round keys are found from the previous round keys.
|
|
//i == Nk
|
|
for(; i < m_nb * (m_nr + 1); ++i)
|
|
{
|
|
{
|
|
tempa[0] = roundKey.at((i-1) * 4 + 0);
|
|
tempa[1] = roundKey.at((i-1) * 4 + 1);
|
|
tempa[2] = roundKey.at((i-1) * 4 + 2);
|
|
tempa[3] = roundKey.at((i-1) * 4 + 3);
|
|
}
|
|
|
|
if (i % m_nk == 0)
|
|
{
|
|
// This function shifts the 4 bytes in a word to the left once.
|
|
// [a0,a1,a2,a3] becomes [a1,a2,a3,a0]
|
|
|
|
// Function RotWord()
|
|
{
|
|
k = tempa[0];
|
|
tempa[0] = tempa[1];
|
|
tempa[1] = tempa[2];
|
|
tempa[2] = tempa[3];
|
|
tempa[3] = k;
|
|
}
|
|
|
|
// SubWord() is a function that takes a four-byte input word and
|
|
// applies the S-box to each of the four bytes to produce an output word.
|
|
|
|
// Function Subword()
|
|
{
|
|
tempa[0] = getSBoxValue(tempa[0]);
|
|
tempa[1] = getSBoxValue(tempa[1]);
|
|
tempa[2] = getSBoxValue(tempa[2]);
|
|
tempa[3] = getSBoxValue(tempa[3]);
|
|
}
|
|
|
|
tempa[0] = tempa[0] ^ Rcon[i/m_nk];
|
|
}
|
|
if (m_level == AES_256 && i % m_nk == 4)
|
|
{
|
|
// Function Subword()
|
|
{
|
|
tempa[0] = getSBoxValue(tempa[0]);
|
|
tempa[1] = getSBoxValue(tempa[1]);
|
|
tempa[2] = getSBoxValue(tempa[2]);
|
|
tempa[3] = getSBoxValue(tempa[3]);
|
|
}
|
|
}
|
|
roundKey.insert(i * 4 + 0, roundKey.at((i - m_nk) * 4 + 0) ^ tempa[0]);
|
|
roundKey.insert(i * 4 + 1, roundKey.at((i - m_nk) * 4 + 1) ^ tempa[1]);
|
|
roundKey.insert(i * 4 + 2, roundKey.at((i - m_nk) * 4 + 2) ^ tempa[2]);
|
|
roundKey.insert(i * 4 + 3, roundKey.at((i - m_nk) * 4 + 3) ^ tempa[3]);
|
|
}
|
|
|
|
return roundKey;
|
|
}
|
|
|
|
// This function adds the round key to state.
|
|
// The round key is added to the state by an XOR function.
|
|
void QAESEncryption::addRoundKey(int round, const QByteArray expKey)
|
|
{
|
|
for(int i=0; i < 16; i++)
|
|
m_state->insert(i, m_state->at(i) ^ expKey.at(round * m_nb * 4 + (i/4) * m_nb + (i%4)));
|
|
}
|
|
|
|
// The SubBytes Function Substitutes the values in the
|
|
// state matrix with values in an S-box.
|
|
void QAESEncryption::subBytes()
|
|
{
|
|
for(int i = 0; i < 16; i++)
|
|
m_state->insert(i, getSBoxValue(m_state->at(i)));
|
|
}
|
|
|
|
// The ShiftRows() function shifts the rows in the state to the left.
|
|
// Each row is shifted with different offset.
|
|
// Offset = Row number. So the first row is not shifted.
|
|
void QAESEncryption::shiftRows()
|
|
{
|
|
uint8_t temp;
|
|
|
|
//Shift 1
|
|
temp = m_state->at(4);
|
|
m_state->insert(4, m_state->at(4+1));
|
|
m_state->insert(4+1, m_state->at(4+2));
|
|
m_state->insert(4+2, m_state->at(4+3));
|
|
m_state->insert(4+3, temp);
|
|
|
|
//Shift 2
|
|
temp = m_state->at(8);
|
|
m_state->insert(8, m_state->at(8+2));
|
|
m_state->insert(8+2, temp);
|
|
temp = m_state->at(8+1);
|
|
m_state->insert(8+1, m_state->at(8+3));
|
|
m_state->insert(8+3, temp);
|
|
|
|
//Shift 3
|
|
temp = m_state->at(12);
|
|
m_state->insert(12, m_state->at(12+3));
|
|
m_state->insert(12+3, m_state->at(12+2));
|
|
m_state->insert(12+2, m_state->at(12+1));
|
|
m_state->insert(12+1, temp);
|
|
}
|
|
|
|
// MixColumns function mixes the columns of the state matrix
|
|
//optimized!!
|
|
void QAESEncryption::mixColumns()
|
|
{
|
|
uint8_t Tmp,Tm,t;
|
|
for(int i = 0; i < 16; i+=4)
|
|
{
|
|
t = m_state->at(i);
|
|
Tmp = m_state->at(i) ^ m_state->at(i+1) ^ m_state->at(i+2) ^ m_state->at(i+3) ;
|
|
|
|
Tm = m_state->at(i) ^ m_state->at(i+1);
|
|
Tm = xTime(Tm);
|
|
m_state->insert(i, m_state->at(i) ^ Tm ^ Tmp);
|
|
|
|
Tm = m_state->at(i+1) ^ m_state->at(i+2);
|
|
Tm = xTime(Tm);
|
|
m_state->insert(i+1, m_state->at(i+1) ^ Tm ^ Tmp);
|
|
|
|
Tm = m_state->at(i+2) ^ m_state->at(i+3);
|
|
Tm = xTime(Tm);
|
|
m_state->insert(i+2, m_state->at(i+2) ^ Tm ^ Tmp);
|
|
|
|
Tm = m_state->at(i+3) ^ t;
|
|
Tm = xTime(Tm);
|
|
m_state->insert(i+3, m_state->at(i+3) ^ Tm ^ Tmp);
|
|
}
|
|
}
|
|
|
|
// MixColumns function mixes the columns of the state matrix.
|
|
// The method used to multiply may be difficult to understand for the inexperienced.
|
|
// Please use the references to gain more information.
|
|
void QAESEncryption::invMixColumns()
|
|
{
|
|
uint8_t a,b,c,d;
|
|
for(int i = 0; i < 16; i+=4)
|
|
{
|
|
a = m_state->at(i);
|
|
b = m_state->at(i+1);
|
|
c = m_state->at(i+2);
|
|
d = m_state->at(i+3);
|
|
|
|
m_state->insert(i, Multiply(a, 0x0e) ^ Multiply(b, 0x0b) ^ Multiply(c, 0x0d) ^ Multiply(d, 0x09));
|
|
m_state->insert(i+1, Multiply(a, 0x09) ^ Multiply(b, 0x0e) ^ Multiply(c, 0x0b) ^ Multiply(d, 0x0d));
|
|
m_state->insert(i+2, Multiply(a, 0x0d) ^ Multiply(b, 0x09) ^ Multiply(c, 0x0e) ^ Multiply(d, 0x0b));
|
|
m_state->insert(i+3, Multiply(a, 0x0b) ^ Multiply(b, 0x0d) ^ Multiply(c, 0x09) ^ Multiply(d, 0x0e));
|
|
}
|
|
}
|
|
|
|
// The SubBytes Function Substitutes the values in the
|
|
// state matrix with values in an S-box.
|
|
void QAESEncryption::invSubBytes()
|
|
{
|
|
for(int i = 0; i < 16; ++i)
|
|
m_state->insert(i, getSBoxInvert(m_state->at(i)));
|
|
}
|
|
|
|
void QAESEncryption::invShiftRows()
|
|
{
|
|
uint8_t temp;
|
|
|
|
//Shift 1 to right
|
|
temp = m_state->at(4+3);
|
|
m_state->insert(4+3, m_state->at(4+2));
|
|
m_state->insert(4+2, m_state->at(4+1));
|
|
m_state->insert(4+1, m_state->at(4));
|
|
m_state->insert(4, temp);
|
|
|
|
//Shift 2
|
|
temp = m_state->at(8+2);
|
|
m_state->insert(8+2, m_state->at(8));
|
|
m_state->insert(8, temp);
|
|
temp = m_state->at(8+3);
|
|
m_state->insert(8+3, m_state->at(8+1));
|
|
m_state->insert(8+1, temp);
|
|
|
|
//Shift 3
|
|
temp = m_state->at(12+3);
|
|
m_state->insert(12+3, m_state->at(12));
|
|
m_state->insert(12, m_state->at(12+1));
|
|
m_state->insert(12+1, m_state->at(12+2));
|
|
m_state->insert(12+2, temp);
|
|
}
|
|
|
|
// Cipher is the main function that encrypts the PlainText.
|
|
QByteArray QAESEncryption::cipher(const QByteArray expKey, const QByteArray in)
|
|
{
|
|
|
|
//m_state is the input buffer.... handle it!
|
|
QByteArray output(in);
|
|
m_state = &output;
|
|
uint8_t round = 0;
|
|
|
|
qDebug() << "Cyper " << QString(expKey);
|
|
|
|
// Add the First round key to the state before starting the rounds.
|
|
addRoundKey(0, expKey);
|
|
|
|
// There will be Nr rounds.
|
|
// The first Nr-1 rounds are identical.
|
|
// These Nr-1 rounds are executed in the loop below.
|
|
for(round = 1; round < m_nr; ++round)
|
|
{
|
|
subBytes();
|
|
shiftRows();
|
|
mixColumns();
|
|
addRoundKey(round, expKey);
|
|
}
|
|
|
|
// The last round is given below.
|
|
// The MixColumns function is not here in the last round.
|
|
subBytes();
|
|
shiftRows();
|
|
addRoundKey(m_nr, expKey);
|
|
|
|
qDebug() << "Cyper " << QString(output);
|
|
|
|
return output;
|
|
}
|
|
|
|
void QAESEncryption::invCipher()
|
|
{
|
|
/*uint8_t round=0;
|
|
|
|
// Add the First round key to the state before starting the rounds.
|
|
addRoundKey(m_nr);
|
|
|
|
// There will be Nr rounds.
|
|
// The first Nr-1 rounds are identical.
|
|
// These Nr-1 rounds are executed in the loop below.
|
|
for(round=m_nr-1;round>0;round--)
|
|
{
|
|
invShiftRows();
|
|
invSubBytes();
|
|
addRoundKey(round);
|
|
invMixColumns();
|
|
}
|
|
|
|
// The last round is given below.
|
|
// The MixColumns function is not here in the last round.
|
|
invShiftRows();
|
|
invSubBytes();
|
|
addRoundKey(0);*/
|
|
}
|
|
|
|
QByteArray QAESEncryption::encode(const QByteArray rawText, const QByteArray key, const QByteArray iv)
|
|
{
|
|
//if (m_mode == CBC && iv == NULL)
|
|
// return NULL; //EMIT ERROR!
|
|
|
|
qDebug() << "YAY";
|
|
QByteArray expandedKey = expandKey(key);
|
|
|
|
// The next function call encrypts the PlainText with the Key using AES algorithm.
|
|
return cipher(expandedKey, rawText);
|
|
}
|
|
|
|
/*
|
|
QByteArray QAESEncryption::decode(const uint8_t* input, const uint8_t* key, uint8_t *output, const uint32_t length)
|
|
{
|
|
// Copy input to output, and work in-memory on output
|
|
memcpy(output, input, length);
|
|
state = (state_t*)output;
|
|
|
|
// The KeyExpansion routine must be called before encryption.
|
|
Key = key;
|
|
KeyExpansion();
|
|
|
|
InvCipher();
|
|
}
|
|
*/
|