MdePkg/Include/Library/RngLib.h

/** @file
  Provides random number generator services.

Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#ifndef __RNG_LIB_H__
#define __RNG_LIB_H__

/**
  Generates a 16-bit random number.

  if Rand is NULL, then ASSERT().

  @param[out] Rand     Buffer pointer to store the 16-bit random value.

  @retval TRUE         Random number generated successfully.
  @retval FALSE        Failed to generate the random number.

**/
BOOLEAN
EFIAPI
GetRandomNumber16 (
  OUT     UINT16  *Rand
  );

/**
  Generates a 32-bit random number.

  if Rand is NULL, then ASSERT().

  @param[out] Rand     Buffer pointer to store the 32-bit random value.

  @retval TRUE         Random number generated successfully.
  @retval FALSE        Failed to generate the random number.

**/
BOOLEAN
EFIAPI
GetRandomNumber32 (
  OUT     UINT32  *Rand
  );

/**
  Generates a 64-bit random number.

  if Rand is NULL, then ASSERT().

  @param[out] Rand     Buffer pointer to store the 64-bit random value.

  @retval TRUE         Random number generated successfully.
  @retval FALSE        Failed to generate the random number.

**/
BOOLEAN
EFIAPI
GetRandomNumber64 (
  OUT     UINT64  *Rand
  );

/**
  Generates a 128-bit random number.

  if Rand is NULL, then ASSERT().

  @param[out] Rand     Buffer pointer to store the 128-bit random value.

  @retval TRUE         Random number generated successfully.
  @retval FALSE        Failed to generate the random number.

**/
BOOLEAN
EFIAPI
GetRandomNumber128 (
  OUT     UINT64  *Rand
  );

#endif // __RNG_LIB_H__