I can only guess that you ask about the performance of the DES algorithm when implemented in software as opposed to hardware. Any algorithm that can be economically implemented in hardware will perform faster in hardware than software by orders of magnitude in the general case. Encryption algorithms such as DES are often based on a shift-combine-shift sequence, which is fairly easy to implement in hardware, but can take considerable processing time when implemented in software.
double DES is less secure than triple DES triple DES is much slower than double DES double DES is within the range of brute force attack. but triple DES is not in the range of brute force attack.
Anti-virus software are programs that run on your computer. At any one time there are lots of programs running on your computer. The more that are running, the slower the computer can work. So when you install a new program like anti-virus software, it is an extra program to run which will make your computer slower. It is still important that you do use anti-virus software, even if it does slow down your computer.
CPM software has received great reviews. The only problem you may have is your systme may run a little slower.
makes the computer and the hardware within faster or slower, also if its a big software file it can give you less hard drive space.
If your computer is slower than usual or behaving oddly, you may have a virus. Install a virus scanner and scan your computer.
Can you give more specifications about the "responding slower" issue, and give some detais about your Sony Vaio hardware and software? Because there are qutie too many causes.
It's not about computers, it's about software which requires more and more computer resources with each release.
It is called software bloat where larger programs become perceptibly slower,use more memory,disc space or processing power.
Knut Koslowski has written: 'Unterstutzung von partizipativer Systementwicklung durch Methoden des Software Engineering'
It might not necessarily be that Windows itself is slowing down. A more likely cause is that the computer which now has more software on its hardware, takes a longer time to process everything, making Windows seem slower.
You have to carry around a phone, and an itouch.You run out of space quickly and the software is slower than a 3g 32gb or 64gb or the 4g.
It's difficult to say from here without more information, but the things I'd look at are:Are the two machines the same - does the slower machine have less memory, slower hard drive, slower processor or different software? Are the files being transferred to the main drive of the computer - for example, FAT is much slower than NTFS so if download to a FAT formatted memory stick, it will be a lot slower. Are both PCs connected in the same way? (if one is wireless connected and the other using a cable, the wireless will be a lot slower).Are there any errors being reported for the Ethernet connection on the PC?