最有效的方式进行XOR字节数组在vb.net [英] Most efficient way to xor byte array in vb.net
问题描述
我正在做在vb.net将由异或数据使用字节数组作为缓冲区读取文件，并为他们创造平等文件的应用程序...什么是异或字节数组的最有效方法是什么？我虽然字节数组convertinbg到bitarray然后运行它槽XOR运算，并把它返回一个字节数组，但是这听起来像一个非常处理昂贵的任务，我很担心，这可能会影响读取/写入速度...有没有更好的方式来做到这一点？谢谢...
I am making making an application in vb.net that will read files using a byte array as buffer, and create parity files for them by xoring the data... What would be the most efficient way of xoring a byte array? I have though of convertinbg the byte array to a bitarray and then run it trough an xor operation and turn it back to a byte array, but that sounds like a very processing expensive task, and i am worried that it might impact read/write speed... is there a better way to do this? thanks...
要避免混淆：
什么应用程序不会被读取一半的文件位置1，另一半的位置2，然后是平价（两部分XOR）来定位3 ...
To avoid confusion: What the application does is read half the file to location 1, the other half to location 2, then a parity (xor of the two parts) to location 3...
推荐答案
要异或两个字节数组只是一个for循环和的 XOR运算。
To Xor two byte arrays simply use a for loop and the Xor operator.
VB.Net的异或将编译方式的 CIL 的异或运算code 这应该是后来JIT编译速度非常快的x86 XOR处理器指令
VB.Net's Xor will compile to a the CIL Xor opcode which should be subsequently JIT compiled to the very fast x86 XOR processor instruction.
XOR操作的成本很可能是微不足道相比文件I / O的成本。
The cost of the Xor operation is likely to be negligible in comparison to the cost of file I/O.
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