Hi ,

basic user is use blowfish and aes encryption file , but this is old algorithms , i saw new algorithms have Yarrow - Fortuna - Threefish - Skein , but i can't saw this software .

It's not clear that encryption software is an area where you want to be leading edge.

Security is a process - what is secure today may not be secure tomorrow. Also what smallpond said. In case of encryption algorithms it's better to use old and proven stuff than the newer and shiny stuff.

But generally you should be fine with AES or any AES candidates (use cascades, if you're paranoid). For hash you should use at least SHA256 (SHA512, if you're paranoid) and remember to salt and pepper your passwords when implementing access restrictions.

Generally speaking, it is not the algorithm that's the weakness, but rather the (human) process that surrounds it.

The Enigma system was plenty secure-enough for its day, but its keying system was weak, and that's how it was catastrophically broken. The original WEP-key system for wireless could also be broken just by sampling a few minutes' traffic. (And too-many computers are wide open to anyone else in that coffee shop. Have you noticed how many places offer "free wireless," and have you ever seriously-considered why?

Any "password" is weak, even if you do the whole Waffle House treatment ("scattered, smothered, etc. ...") on it. Whereas, a unique digital certificate is strong ... i-f it can be secured, if your employees can actually be trusted, if you don't put your data "in the cloud" or hire the cheapest programmers you can find on Planet Earth.

If you study any crypto protocol, you'll see that it is soup-to-nuts, and that "cipher algorithms" are actually part of the negotiation. The focus of the protocol is on how the algorithms are used.