Tag Info

Hot answers tagged

5

Actually, the problem with OTP isn't the storage of the pad (although secure erasure of the parts of the pad you used is trickier than it looks), and it isn't the pad generation (although, again, that's trickier than it looks), but the secure transport. After all, it's not enough for you (Alice) to have the secure pad, you also have to give a copy to the ...


2

In modular calculations such as this, the divisor (in your case 26) must be at least the size of your character code space. Your code space is 46 characters, so that is not going to work. Any output of the modular calculation will be less than the divisor, so you will never get 83 for x mod 26, it is not going to happen. For a 46 character code space, 46 is ...


1

It is safe, in the case that you have MACs which are independently keyed (or at the very least, the cryptographically secure MAC is independently keyed from all the other ones). This can be seen not by an argument from randomness, but from a simple observation that it were not true, then an attacker could attack the secure MAC by generating the insecure ...



Only top voted, non community-wiki answers of a minimum length are eligible