QString UBCryptoUtils::symetricEncrypt(const QString& clear)
{
QByteArray clearData = clear.toUtf8();
int cipheredLength = clearData.length() + AES_BLOCK_SIZE;
int paddingLength = 0;
unsigned char *ciphertext = (unsigned char *)malloc(cipheredLength);
if(!EVP_EncryptInit_ex(&mAesEncryptContext, NULL, NULL, NULL, NULL)){
free(ciphertext);
return QString();
}
if(!EVP_EncryptUpdate(&mAesEncryptContext, ciphertext, &cipheredLength, (unsigned char *)clearData.data(), clearData.length())){
free(ciphertext);
return QString();
}
/* update ciphertext with the final remaining bytes */
if(!EVP_EncryptFinal_ex(&mAesEncryptContext, ciphertext + cipheredLength, &paddingLength)){
free(ciphertext);
return QString();
}
QByteArray cipheredData((const char *)ciphertext, cipheredLength + paddingLength);
free(ciphertext);
return QString::fromLatin1(cipheredData.toBase64());
}
QByteArray UBAbstractPublisher::encrypt(const QString& clear)
{
static const char *key = "9ecHaspud9uD9ste5erAchehefrup3ec";
EVP_CIPHER_CTX aesEncryptContext;
EVP_CIPHER_CTX_init(&aesEncryptContext);
EVP_EncryptInit_ex(&aesEncryptContext, EVP_aes_256_ecb(), NULL, (const unsigned char*)key, NULL);
QByteArray clearData = clear.toUtf8();
int cipheredLength = clearData.length() + AES_BLOCK_SIZE;
int paddingLength = 0;
unsigned char *cipherText = (unsigned char *)malloc(cipheredLength);
if(!EVP_EncryptInit_ex(&aesEncryptContext, NULL, NULL, NULL, NULL))
return QByteArray();
if(!EVP_EncryptUpdate(&aesEncryptContext, cipherText, &cipheredLength, (unsigned char *)clearData.data(), clearData.length()))
return QByteArray();
/* update ciphertext with the final remaining bytes */
if(!EVP_EncryptFinal_ex(&aesEncryptContext, cipherText + cipheredLength, &paddingLength))
return QByteArray();
QByteArray cipheredData((const char *)cipherText, cipheredLength + paddingLength);
free(cipherText);
EVP_CIPHER_CTX_cleanup(&aesEncryptContext);
return cipheredData;
}
