我从网上下载了以下功能。它是来自给定密码的 64 位WEP密钥生成器,我想知道这样的算法是标准算法还是开发人员发明的算法?
void wepkey64(char *passphrase, unsigned char k64[4][5])
{
unsigned char pseed[4] = {0};
unsigned int randNumber, tmp;
int i, j;
for(i = 0; i < strlen(passphrase); i++)
{
pseed[i%4] ^= (unsigned char) passphrase[i];
}
randNumber = pseed[0] | (pseed[1] << 8) | (pseed[2] << 16) | (pseed[3] << 24);
for (i = 0; i < 4; i++)
{
for (j = 0; j < 5; j++)
{
randNumber = (randNumber * 0x343fd + 0x269ec3) & 0xffffffff;
tmp = (randNumber >> 16) & 0xff;
k64[i][j] = (unsigned char) tmp;
}
}
}