Hi,
I posted this question earlier but I wasnt a member of mailinglist so some
things went wrong :(
I want to encrypt a plaintext file (about 700Kb) en decrypt it later with
RSA, ofcourse with the openssl lib
Now i am able to encrypt chunks of 200 chars at a time but i cant figure
out how the decrypt them.
I write every encrypted chararray to disk after another.
This is what i do :
while (PTF != EOF)
Read 200 chars from plaintext file (PTF)
encrypt the 200 chars
write the encrypted data to disk
close PTF
while (EDF != EOF)
Read ??? chars from encrypted data file(EDF)
decrypt the ??? chars
write the plaintext to disk
close EDF
(org C++ code was not understandable for outsider, because of other classes
and stuff. That´s why i´ve written it in english instead of C code)
Now my question : how do I know how much characters I have to read in to
have a successfull decryption ??
Or am I doing the complete encrypt/decrypt from and to file wrong ??
With kind regards,
Thijs Volders
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