How to use byte like the following example

Question

Can anyone tell my how this guy, who gives the code example, is able to use byte?

Like this line:

byte key[ CryptoPP::AES::DEFAULT_KEYLENGTH ], iv[ CryptoPP::AES::BLOCKSIZE ];

and

std::cout << "0x" << std::hex << (0xFF & static_cast<byte>(ciphertext[i])) << " ";

I tried copy-paste, but I can't create byte variables.

He knew that `std::byte` would get added to the standard before anyone else. — Hatted Rooster, Mar 02 '18 at 13:12
https://www.cryptopp.com/docs/ref/config_8h_source.html line 228 — unique_ptr, Mar 02 '18 at 13:42

score 0 · Accepted Answer · 2018-03-02T13:18:20.470

0

You have do define that like this

typedef unsigned char byte;

because the char type doesen't reach decimal value 255 so you have to define an unsigned char type. Anyway it works

edited Mar 02 '18 at 13:18

answered Mar 02 '18 at 13:09

rbf · Answer 2 · 2018-03-02T13:13:58.793

0

The type "byte" is defined in some of the header files that is included in the example. To use exactly the same type, you have to include the same header files.

edited Mar 02 '18 at 13:13

answered Mar 02 '18 at 13:12

rbf

541
4
16

It's not, look at the date of the answer. – Hatted Rooster Mar 02 '18 at 13:12
@SombreroChicken you are correct - editing my answer accordingly. – rbf Mar 02 '18 at 13:13

How to use byte like the following example

2 Answers2