Hi all I have created an application that performs time analysis of
file encryption. I have some questions but before here are the results
Input : 5312 KB mp3 file
Password :Hello World ( This is hashed with SHA 256) to make it the
algorithm key
Encryption Mode : CBC (Cipher Block Chaining)
The result is as below
AES 210 ms
DES 632 ms
TRIPLE DES 1166 ms
BLOWFISH 407 ms
SERPENT 897 ms
The code where the time was measured is as below
//start timer
QueryPerformanceCounter(&t1);
FileSource( inputFileStream, true, new
StreamTransformationFilter( encryptorObject, new
FileSink(outFileStream)));
// stop timer
QueryPerformanceCounter(&t2);
timetaken = (t2.QuadPart - t1.QuadPart) * 1000.0 /
frequency.QuadPart;
Now the question I wish to ask are
1. Why is AES the fastest in comparison to all the three?
2. Shouldnt DES have taken thrice the time than DES, where as it
takeas around twice the time
3 Also Blowfish is fast cipher , but still takes more time than AES?
Also if you can highlight anything regarding their comparison it would
be very helpful. Thanks in advance
If you can suggest a site/link/books where i can refer to their time
anlaysis it would be gretaly helpful
Other Information
OS: WIN XP
COMPILER/IDE Mingw /qt 4.7
cryptopp version 5.5.2
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