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#pragma once
#include <array>
#include <cstdint>
namespace rmcp
{
/*
* RSP needs more keying material than can be provided by session
* integrity key alone. As a result all keying material for the RSP
* confidentiality algorithms will be generated by processing a
* pre-defined set of constants using HMAC per [RFC2104], keyed by SIK.
* These constants are constructed using a hexadecimal octet value
* repeated up to the HMAC block size in length starting with the
* constant 01h. This mechanism can be used to derive up to 255
* HMAC-block-length pieces of keying material from a single SIK.For the
* mandatory confidentiality algorithm AES-CBC-128, processing the
* following constant will generate the required amount of keying
* material.
*/
constexpr size_t CONST_N_SIZE = 20;
using Const_n = std::array<uint8_t, CONST_N_SIZE>;
static constexpr Const_n const_1 = {
0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01
};
static constexpr Const_n const_2 = {
0x02, 0x02, 0x02, 0x02, 0x02,
0x02, 0x02, 0x02, 0x02, 0x02,
0x02, 0x02, 0x02, 0x02, 0x02,
0x02, 0x02, 0x02, 0x02, 0x02
};
} // namespace rmcp
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