1 /***********************************************************************

2 *

3 * Copyright (c) 2021-2025 Tim van Deurzen

4 * Copyright (c) 2021-2025 Barbara Geller

5 * Copyright (c) 2021-2025 Ansel Sermersheim

6 *

7 * This file is part of CsCrypto.

8 *

9 * CsCrypto is free software which is released under the BSD 2-Clause license.

10 * For license details refer to the LICENSE provided with this project.

11 *

12 * CsCrypto is distributed in the hope that it will be useful,

13 * but WITHOUT ANY WARRANTY; without even the implied warranty of

14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

15 *

16 * https://opensource.org/licenses/BSD-2-Clause

17 *

18 ***********************************************************************/

19 

20 #ifndef CS_CRYPTO_UTIL_BYTE_H

21 #define CS_CRYPTO_UTIL_BYTE_H

22 

23 #include <util/tools/crypto_traits.h>

24 

25 #include <cstddef>

26 #include <type_traits>

27 

28 namespace cs_crypto::util {

29 

30 inline const unsigned char *from_byte_ptr(const std::byte *value)

31 {

32  return reinterpret_cast<const unsigned char *>(value);

33 }

34 

35 inline unsigned char *from_byte_ptr(std::byte *value)

36 {

37  return reinterpret_cast<unsigned char *>(value);

38 }

39 

40 template <typename T>

41 inline const std::byte *to_byte_ptr(const T *value)

42 {

43  static_assert(cs_crypto::traits::is_uniquely_represented_byte_v<T>, "Unable to convert const T * to const std::byte *");

44  return reinterpret_cast<const std::byte *>(value);

45 }

46 

47 } // namespace cs_crypto::util

48 

49 #endif