sending encrypted data via mail using smtp

[vermarajeev]

The order while sending should be:
1. encrypt file
2. encode it with base64
3. divide it into blocks 64 (or 80 or whatever) bytes each
4. concatenate blocks using newlines (\r\n)
5. pass the result into the mail stream adding a base64 header

when receiving a mail:
1. parse headers
2. concatenate lines
3. base64 decode into QByteArray
4. decrypt
5. pass the result into the stream

Did you mean this below code

while sending

int MAX_BLK_SIZE = 64;
      string sSrcBlk = dat;
      int hManyBlks =  sSrcBlk.length()/MAX_BLK_SIZE;
      char** pSrcBlk = new char*[hManyBlks + 1];
 
    for( int i=0; i < hManyBlks; ++i )
     {
          pSrcBlk[i] = new char[MAX_BLK_SIZE + 1];
          memcpy(pSrcBlk[i], sSrcBlk.data(), MAX_BLK_SIZE);
     }
 
      //append the block 
      for( int i=0; i < hManyBlks; ++i )
	QString blks = QString( pSrcBlk[i] ) + QString("\r\n");
 
	//send blks through mail stream adding base64 header

int MAX_BLK_SIZE = 64;
      string sSrcBlk = dat;
      int hManyBlks =  sSrcBlk.length()/MAX_BLK_SIZE;
      char** pSrcBlk = new char*[hManyBlks + 1];

    for( int i=0; i < hManyBlks; ++i )
     {
          pSrcBlk[i] = new char[MAX_BLK_SIZE + 1];
          memcpy(pSrcBlk[i], sSrcBlk.data(), MAX_BLK_SIZE);
     }

      //append the block 
      for( int i=0; i < hManyBlks; ++i )
	QString blks = QString( pSrcBlk[i] ) + QString("\r\n");

	//send blks through mail stream adding base64 header

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while receiving

1) parse -- How to do this ?
2) contcatenate lines -- How to do this ?
3) base64 decode into ByteArray -- I can do it
4) decrypt ---- I can do it
5) pass the result into the stream -- I can do it

1) parse -- How to do this ?
2) contcatenate lines -- How to do this ?
3) base64 decode into ByteArray -- I can do it
4) decrypt ---- I can do it
5) pass the result into the stream -- I can do it

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