Hi Jeff.
To explain the issue better ;i do something like this :
string a = ReadFileContent("a.txt");
string e = EncAES(a,"eeeeeeee",AES_MAX_BLOCK,iv);
string encoded = HexEncode(e);
Ok so ReadFileContent reads a plain file, EncAES encrypts it , AES ,
everything correctly, a.txt having about 17000 chars and when doing
HexEncoded the encoded string has only 200 chars!!!(if decoding and
decrypting it only shows me(correctly) the 200 chars of plain text from
those 17k)
And another example that shows that buffered functions are the problem ->
i'm trying to write an encrypted text into an archive using << , overloaded
by a different lib, but still buffered writing. Again it only writes only a
little part and not ALL the encrypted string.
Cheers,
knuth
Jeffrey Walton-3 wrote:
>
>
> Hi knuth,
>
>> I'm having some "problems" for quite some time now with Crypto++.
>> There are two issues i want to raise
> Have you examined any sample code from either the source files, the
> Crypto++ FAQ, the Crypto++ wiki, or programming sites such as
> CoedProject?
>
>> ifstream ifs(...);
> In the Microsoft world, I usually observe problems with the wide stream
> stuff.
>
>> ifs.read(buf,fileLength);
> I suspect the issue is on the Write side of the equation.
>
>> The problem is that because the file contains weird characters after the
>> encryption , it actually reads until it finds end of file (or 00 i think
>> -
>> in hex)
> Nothing weird about them. They will be in the range from 0 - 255,
> inclusive. End of File is usually defined similar to (unsigned
> short)-1 or (unsigned int)-1 so that you can determine when a byte has
> been read versus the end of file marker.
>
> Perhaps you should try a StringSink for the Write.
>
> Jeff
>
>
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