| private static FixKey ( Array key, int keyOff, int keyLen ) : byte[] | ||
| key | Array | |
| keyOff | int | |
| keyLen | int | |
| Результат | byte[] | |
private static byte[] FixKey(
byte[] key,
int keyOff,
int keyLen)
{
byte[] tmp = new byte[24];
switch (keyLen)
{
case 16:
Array.Copy(key, keyOff, tmp, 0, 16);
Array.Copy(key, keyOff, tmp, 16, 8);
break;
case 24:
Array.Copy(key, keyOff, tmp, 0, 24);
break;
default:
throw new ArgumentException("Bad length for DESede key: " + keyLen, "keyLen");
}
if (IsWeakKey(tmp))
throw new ArgumentException("attempt to create weak DESede key");
return tmp;
}
