QuasarApp/Qt-AES
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moving to iterators

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This commit is contained in:
Matteo Brichese 2017-06-23 10:29:50 -07:00
parent f26cbc8496
commit 310831a3f3
1 changed files with 5 additions and 5 deletions
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qaesencryption.cpp
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@ -130,18 +130,18 @@ QByteArray QAESEncryption::expandKey(const QByteArray key)
// The round key is added to the state by an XOR function.
void QAESEncryption::addRoundKey(quint8 round, const QByteArray expKey)
{
for(int i=0; i < 16; i++) {
char value = m_state->at(i) ^ expKey.at(round * m_nb * 4 + (i/4) * m_nb + (i%4));
m_state->replace(i, 1, &value);
}
QByteArray::iterator it = m_state->begin();
for(int i=0; i < 16; i++)
it[i] = (quint8)it[i] ^ (quint8)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()
{
QByteArray::iterator it = m_state->begin();
for(int i = 0; i < 16; i++)
m_state->replace(i, getSBoxValue((quint8) m_state->at(i)));
it[i] = getSBoxValue((quint8) it[i]);
}
// The ShiftRows() function shifts the rows in the state to the left.