private static void processData(FileStream inStream, long inDataLen, FileStream outStream, long outDataLen, BlockStreamCrypter bsc)
{
int bufSize = 0x200000;
byte[] buf = new byte[bufSize];
long filePos = 0;
while (filePos < inDataLen)
{
int reqLen = (int)Math.Min(inDataLen - filePos, bufSize);
int trLen = inStream.Read(buf, 0, reqLen);
if (trLen != reqLen)
{
throw new Exception("Incomplete data chunk read from file.");
}
int chunkLen = (trLen + blockSize - 1) / blockSize * blockSize;
for (int i = trLen; i <= chunkLen; i++)
{
buf[i] = 0;
}
for (int pos = 0; pos < chunkLen; pos += blockSize)
{
bsc.crypt(buf, pos);
}
reqLen = (int)Math.Min(outDataLen - filePos, chunkLen);
outStream.Write(buf, 0, reqLen);
filePos += chunkLen;
}
}
private static long readDataLength(FileStream stream, BlockStreamCrypter bsc)
{
byte[] buf = new byte[blockSize];
int trLen = stream.Read(buf, 0, blockSize);
if (trLen != blockSize)
{
throw new Exception("Unable to read data length suffix.");
}
bsc.crypt(buf, 0);
return(unpackDataLength(buf));
}
private static void writeDataLength(FileStream stream, long dataLength, BlockStreamCrypter bsc)
{
byte[] a = packDataLength(dataLength);
bsc.crypt(a, 0);
stream.Write(a, 0, blockSize);
}
private static long readDataLength(FileStream stream, BlockStreamCrypter bsc)
{
byte[] buf = new byte[blockSize];
int trLen = stream.Read(buf, 0, blockSize);
if (trLen != blockSize)
{
throw new Exception("Unable to read data length suffix.");
}
bsc.crypt(buf, 0);
return unpackDataLength(buf);
}
private static void processData(FileStream inStream, long inDataLen, FileStream outStream, long outDataLen, BlockStreamCrypter bsc)
{
int bufSize = 0x200000;
byte[] buf = new byte[bufSize];
long filePos = 0;
while (filePos < inDataLen)
{
int reqLen = (int)Math.Min(inDataLen - filePos, bufSize);
int trLen = inStream.Read(buf, 0, reqLen);
if (trLen != reqLen)
{
throw new Exception("Incomplete data chunk read from file.");
}
int chunkLen = (trLen + blockSize - 1) / blockSize * blockSize;
for (int i = trLen; i <= chunkLen; i++)
{
buf[i] = 0;
}
for (int pos = 0; pos < chunkLen; pos += blockSize)
{
bsc.crypt(buf, pos);
}
reqLen = (int)Math.Min(outDataLen - filePos, chunkLen);
outStream.Write(buf, 0, reqLen);
filePos += chunkLen;
}
}
private static void writeDataLength(FileStream stream, long dataLength, BlockStreamCrypter bsc)
{
byte[] a = packDataLength(dataLength);
bsc.crypt(a, 0);
stream.Write(a, 0, blockSize);
}