#1 crypto operations

[marco sabatini]

Crypto operations should be changed. The crypto of file now is implemented in this manner:

1)read content file (all)
2)copy in a buffer in memory
3)crypt the buffer
4)write the buffer in a file

I want this instead:

1)read one bite a time
2)make crypto of a byte
3)write a bite in a file
4)complete the cycle untill the content is finished

Crypto operations are in Crypto.cpp.

[marco sabatini]

crypto is ok now. only make hash has to change