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Encrypt & Decrypt using PyCrypto AES 256
...uses a block_size of 32 byte (256 byte) to pad input data but AES uses 128 bit block size. In AES256 the key is 256 bit, but not the block size.
– Tannin
Dec 24 '15 at 13:29
...
Which is faster : if (bool) or if(int)?
...
Makes sense to me. Your compiler apparently defines a bool as an 8-bit value, and your system ABI requires it to "promote" small (< 32-bit) integer arguments to 32-bit when pushing them onto the call stack. So to compare a bool, the compiler generates code to isolate the least significant...
Why is Go so slow (compared to Java)?
...
In the next release of the Go FAQ, something similar to the following should appear.
Performance
Why does Go perform badly on benchmark
X?
One of Go's design goals is to
approach the performance of C for
comparable programs, yet on some
benchmarks it does quite poorly...
How to clone all remote branches in Git?
...y track more than one remote repository using git remote.
$ git remote add win32 git://example.com/users/joe/myproject-win32-port
$ git branch -a
* master
remotes/origin/HEAD
remotes/origin/master
remotes/origin/v1.0-stable
remotes/origin/experimental
remotes/win32/master
remotes/win32/n...
What are the mechanics of short string optimization in libc++?
...nt architectures?
In the short form, there are 3 words to work with:
1 bit goes to the long/short flag.
7 bits goes to the size.
Assuming char, 1 byte goes to the trailing null (libc++ will always store a trailing null behind the data).
This leaves 3 words minus 2 bytes to store a short string...
maximum value of int
...estion but maybe someone can use this solution:
int size = 0; // Fill all bits with zero (0)
size = ~size; // Negate all bits, thus all bits are set to one (1)
So far we have -1 as result 'till size is a signed int.
size = (unsigned int)size >> 1; // Shift the bits of size one position to ...
Convert Base64 string to an image file? [duplicate]
...rm! Thank you a lot! Exactly what I was looking for. Just changed a little bit to match my specific requirements and got everything to work.
– Sharpey
Dec 20 '18 at 15:41
add ...
Creating a textarea with auto-resize
...is works for me (Firefox 3.6/4.0 and Chrome 10/11):
var observe;
if (window.attachEvent) {
observe = function (element, event, handler) {
element.attachEvent('on'+event, handler);
};
}
else {
observe = function (element, event, handler) {
element.addEventList...
Simplest two-way encryption using PHP
...about (bigger is probably not better, due to bad key-scheduling in the 256-bit mode).
Note: We are not using mcrypt because it is abandonware and has unpatched bugs that might be security-affecting. Because of these reasons, I encourage other PHP developers to avoid it as well.
Simple Encryption/D...
Asp.net 4.0 has not been registered
When I try to open my Visual Studio project I get the following error:
13 Answers
13
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