Similarily to RC4 (RC4_PRNG+XOR ), would it be secure to use another CSPRNG(Cryptographically secure pseudorandom number generator)[Isaac, BlumBlumShub, etc) instead of RC4's and XOR the data with the resulting keystream? ...
I've been tasked with implementing an XOR hash for a variable length binary string in Perl; the length can range from 18 up to well over 100. In my understanding of it, I XOR the binary string I have with a key. I've read two different applications of this online: One of the options is if the length of my key is shorter than the string...
Is there an equivalent in VB.NET to the C# ^= operator? ...
For example, suppose I have x XOR y = y XOR x = z. Is it possible to have something like a XOR b = z? ...
Hello, I setup my crosscompiler for making MIPS instructions. And it compiles C code well. but I found a weird thing for NOT operations. if i make code like int a; func(!a); and i studied MIPS instructions with text book that says "MIPS converts NOT operation to 'nor with zero'" So i thought it would converted like nor a...
>> XOR(X,X) ??? Undefined function or method 'XOR' for input arguments of type 'logical'. Why XOR can't be used for logical matrix? And I tried a more simple example: >> A=[1 0;1 0]; >> B=[1 1;0 0]; >> XOR(A,B) ??? Undefined function or method 'XOR' for input arguments of type 'double'. How can I properly use XOR? ...
You are required to write a maximum of two instructions in assembly to do the following: Clear bits 0 and 7 of register AL, i.e. make them 0 Set bits 3 and 4 of register AL, i.e. make them 1. Complement bits 1 and 5 of register AL. Keep all other bits in the register AL as is without changing their values. ...
I am trying to find the pseudocode for the XOR encryption algorithm. However I've had no luck so far. Anybody know where I can find it? EDIT: XOR 32 if that helps EDIT 2: For Passwords ...
for (int i = 0; i < X; i++) myitem = (checkedDB) ? dirtyItem : cleanItem; I wanted to know if there's a way of flipping checkedDB in the same statement, i.e. the next iteration checkedDB is the opposite of it's value, so like XORing. ...
I was just wondering if there is an XOR logical operator in C (something like && for AND but for XOR). I know I can split an XOR into ANDs, NOTs and ORs but a simple XOR would be much better. Then it occurred to me that if I use the normal XOR bitwise operator between two conditions, it might just work. And for my tests it did. Consider...
I have an XOR encypted file by a VB.net program using this function to scramble: Public Class Crypter ... 'This Will convert String to bytes, then call the other function. Public Function Crypt(ByVal Data As String) As String Return Encoding.Default.GetString(Crypt(Encoding.Default.GetBytes(Data))) End Function ...
I am taking an assembly course now, and the guy who checks our home assignments is a very pedantic old-school optimization freak. For example he deducts 10% if he sees: mov ax, 0 instead of: xor ax,ax even if it's only used once. I am not a complete beginner in assembly programing but I'm not an optimization expert, so I need yo...
So, I've been beating my head against the wall of this issue for several months now, partly because it's a side interest and partly because I suck at programming. I've searched and researched all across the web, but have not had any luck (except one small bit of success; see below), so I thought I might try asking the experts. What I am...
Assume: unsigned char A = 10; unsigned char B = 11; unsigned char C = 12; unsigned char Diff1 = A ^ B; unsigned char Diff2 = B ^ C; //find any of A or B or C using Diff1 and Diff2 Question is: There were 3 values initially for which we found 2 differences. Is there any way we can find any of A or B or C using 2 differences Diff1 ...
I am trying to find the most effective way of writing a XNOR gate in C. if(VAL1 XNOR VAL2) { BLOCK; } Any suggestions? Thanks. ...
After using IDA Pro to disassemble a x86 dll, I found this code (Comments added by me in pusedo-c code. I hope they're correct): test ebx, ebx ; if (ebx == false) jz short loc_6385A34B ; Jump to 0x6385a34b mov eax, [ebx+84h] ; eax = *(ebx+0x84) mov ecx, [esi+84h] ; ecx = *(esi+0x84) mov al, [eax+30h] ; al ...
Is there anything that prevents this form of use of XOR test? bool result = false; bool b1 = false; bool b2 = false; ... if ( b1 ^ b2 ) { result = true; } ...
Given two boolean, how to come up with the most elegant one liner that computes the XOR operation in C#? I know one can do this by a combination of switch or if else but that would make my code rather ugly. ...
Working with exclusive-OR on bits is something which is clear to me. But here, XOR is working on individual characters. So does this mean the byte which makes up the character is being XORed? What does this look like? #include <iostream.h> int main() { char string[11]="A nice cat"; char key[11]="ABCDEFGHIJ"; for(int x=0; x<10; ...
I want to say that is is self learning. We have two integers. I want to get a third element that it is equal to XOR between the two integers, but with the constraint. OK, let me give an example to be more clear. int x is, let's say, is 10 `x = 10 //Binary 1010` and `int y = 9 //Binary 1001` int t = x^y, where ^ is an operator t...