CryptoBuffer CommonCryptoCipher::EncryptBuffer(const CryptoBuffer& unEncryptedData)
{
if (m_failure)
{
AWS_LOGSTREAM_FATAL(CC_LOG_TAG, "Cipher not properly initialized for encryption. Aborting");
return CryptoBuffer();
}
CheckInitEncryptor();
size_t lengthWritten = unEncryptedData.GetLength() + (GetBlockSizeBytes() - 1);
CryptoBuffer encryptedText(static_cast<size_t>( lengthWritten + (GetBlockSizeBytes() - 1)));
CCStatus status = CCCryptorUpdate(m_cryptoHandle, unEncryptedData.GetUnderlyingData(), unEncryptedData.GetLength(),
encryptedText.GetUnderlyingData(), encryptedText.GetLength(), &lengthWritten);
if (status != kCCSuccess)
{
m_failure = true;
AWS_LOGSTREAM_ERROR(CC_LOG_TAG, "Encryption of buffer failed with status code: " << status);
return CryptoBuffer();
}
if (lengthWritten < encryptedText.GetLength())
{
return CryptoBuffer(encryptedText.GetUnderlyingData(), lengthWritten);
}
return encryptedText;
}
void CSAEXAppUi::encryptBody(CRichText*plainBody,CRichText* cipherBody)
{
TPtrC16 plainText=_L("");
TCharFormat charFormat;
plainBody->GetChars(plainText,charFormat,0);
TInt plainLength=plainText.Length();
if(plainLength==iPlainTextLength+1)
{
TBuf8<iPlainTextLength*2> plainEqv;
CnvUtfConverter::ConvertFromUnicodeToUtf8(plainEqv,plainText);
TUint8 encryptedString[(iPlainTextLength*iCipherKeyLength*2)] ;
TInt counter=0;
for (TInt p=0;p<iCipherKeyLength;p++)
{
for(TInt q=0;q<iPlainTextLength;q++)
{
encryptedString[counter]= (TUint8)plainEqv[q] + cipherKey[p]; //cipherKey[p];
encryptedString[counter+1]=0;
counter+=2;
}
}
TPtrC8 encryptedText(encryptedString,iPlainTextLength*iCipherKeyLength*2);
TBuf8<iPlainTextLength*8> encryptedText8;
TImCodecB64 base64;
base64.Initialise();
base64.Encode(encryptedText,encryptedText8);
TBuf16<iPlainTextLength*8> encryptedText16;
CnvUtfConverter::ConvertToUnicodeFromUtf8(encryptedText16,encryptedText8);
cipherBody->InsertL(0,encryptedText16);
}
}
