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程序员之网络安全系列（三）：数据加密之对称加密算法 - 更多技术 - 清泛网...
...安全级别高；
RC4，也是为 RSA Data Security, Inc. 开发的密码系统的商标名称。
传统的DES由于只有56位的密钥，从1997年开始，RSA公司发起了一个称作“向DES挑战”的竞技赛。在首届挑战赛上，罗克·维瑟用了96天时间破解了用DES加...
How to impose maxlength on textArea in HTML using JavaScript
... answered Jul 14 '09 at 13:48
Josh StodolaJosh Stodola
76.3k4242 gold badges177177 silver badges220220 bronze badges
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Problems with lib-icu dependency when installing Symfony 2.3.x via Composer
I've had no problems installing Symfony 2.2.x using Composer, I've always just copied the stable version at http://symfony.com/download .
...
Android Writing Logs to text File
...logFile, true));
buf.append(text);
buf.newLine();
buf.close();
}
catch (IOException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
share
|
...
Xcode stuck at “Your application is being uploaded”
...he internet, I have found some quality answers.
This answer helped me the most:
application loader stuck at the stage of "Authenticating with the iTunes Store"
If you are going to upload it through Application Loader and it gets stuck on "Authentication with the iTunes Store..."
or
You are going to ...
How do you get assembler output from C/C++ source in gcc?
...in NASM syntax though. objdump -drwC -Mintel | less or gcc foo.c -O1 -fverbose-asm -masm=intel -S -o- | less are useful. (See also How to remove “noise” from GCC/clang assembly output?). -masm=intel works with clang, too.
– Peter Cordes
Sep 2 '17 at 19:27...
How to configure postgresql for the first time?
I have just installed postgresql and I specified password x during installation.
When I try to do createdb and specify any password I get the message:
...
Convert a list of data frames into one data frame
...
For the purpose of completeness, I thought the answers to this question required an update. "My guess is that using do.call("rbind", ...) is going to be the fastest approach that you will find..." It was probably true for May 2010 and so...
Django, creating a custom 500/404 error page
...e in the 404 template, but not at all in the 500 template (and they are almost identical) -- posted question on this here: stackoverflow.com/questions/26043211/…
– Gravity Grave
Sep 25 '14 at 16:13
...
Get MD5 hash of big files in Python
...(rootdir, filename, blocksize=2**20):
m = hashlib.md5()
with open( os.path.join(rootdir, filename) , "rb" ) as f:
while True:
buf = f.read(blocksize)
if not buf:
break
m.update( buf )
return m.hexdigest()
The update above was ...