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NSData* bytes = [string dataUsingEncoding:NSUTF8StringEncoding];
Byte *myByte = (Byte *)[bytes bytes];
NSData* keyBytes = [xorKey dataUsingEncoding:NSUTF8StringEncoding];
Byte *keyByte = (Byte *)[keyBytes bytes];
int keyIndex = 0;
for (int x = 0; x < [bytes length]; x++)
{
myByte[x] = myByte[x] ^ keyByte[keyIndex];
NSLog(@">>>>>>>> %hhu",myByte[x]);
if (++keyIndex == [keyBytes length])
{
keyIndex = 0;
}
}
//可以直接返回NSData
NSData *newData = [[NSData alloc] initWithBytes:myByte length:[bytes length]];
NSString *aString = [[NSString alloc] initWithData:newData encoding:NSUTF8StringEncoding];
return aString;