diff options
Diffstat (limited to 'Core/CryptoPkg/Library/BaseCryptLib/Rand/CryptRandTsc.c')
-rw-r--r-- | Core/CryptoPkg/Library/BaseCryptLib/Rand/CryptRandTsc.c | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/Core/CryptoPkg/Library/BaseCryptLib/Rand/CryptRandTsc.c b/Core/CryptoPkg/Library/BaseCryptLib/Rand/CryptRandTsc.c deleted file mode 100644 index 15f0b3feca..0000000000 --- a/Core/CryptoPkg/Library/BaseCryptLib/Rand/CryptRandTsc.c +++ /dev/null @@ -1,118 +0,0 @@ -/** @file
- Pseudorandom Number Generator Wrapper Implementation over OpenSSL.
-
-Copyright (c) 2012 - 2013, Intel Corporation. All rights reserved.<BR>
-This program and the accompanying materials
-are licensed and made available under the terms and conditions of the BSD License
-which accompanies this distribution. The full text of the license may be found at
-http://opensource.org/licenses/bsd-license.php
-
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-**/
-
-#include "InternalCryptLib.h"
-#include <openssl/rand.h>
-#include <openssl/evp.h>
-#include <Library/PrintLib.h>
-
-/**
- Sets up the seed value for the pseudorandom number generator.
-
- This function sets up the seed value for the pseudorandom number generator.
- If Seed is not NULL, then the seed passed in is used.
- If Seed is NULL, then default seed is used.
-
- @param[in] Seed Pointer to seed value.
- If NULL, default seed is used.
- @param[in] SeedSize Size of seed value.
- If Seed is NULL, this parameter is ignored.
-
- @retval TRUE Pseudorandom number generator has enough entropy for random generation.
- @retval FALSE Pseudorandom number generator does not have enough entropy for random generation.
-
-**/
-BOOLEAN
-EFIAPI
-RandomSeed (
- IN CONST UINT8 *Seed OPTIONAL,
- IN UINTN SeedSize
- )
-{
- CHAR8 DefaultSeed[128];
-
- if (SeedSize > INT_MAX) {
- return FALSE;
- }
-
- //
- // The software PRNG implementation built in OpenSSL depends on message digest algorithm.
- // Make sure SHA-1 digest algorithm is available here.
- //
- if (EVP_add_digest (EVP_sha1 ()) == 0) {
- return FALSE;
- }
-
- //
- // Seed the pseudorandom number generator with user-supplied value.
- // NOTE: A cryptographic PRNG must be seeded with unpredictable data.
- //
- if (Seed != NULL) {
- RAND_seed (Seed, (UINT32) SeedSize);
- } else {
- //
- // Retrieve current time.
- //
- AsciiSPrint (
- DefaultSeed,
- sizeof (DefaultSeed),
- "UEFI Crypto Library default seed (%ld)",
- AsmReadTsc ()
- );
-
- RAND_seed (DefaultSeed, sizeof (DefaultSeed));
- }
-
- if (RAND_status () == 1) {
- return TRUE;
- }
-
- return FALSE;
-}
-
-/**
- Generates a pseudorandom byte stream of the specified size.
-
- If Output is NULL, then return FALSE.
-
- @param[out] Output Pointer to buffer to receive random value.
- @param[in] Size Size of random bytes to generate.
-
- @retval TRUE Pseudorandom byte stream generated successfully.
- @retval FALSE Pseudorandom number generator fails to generate due to lack of entropy.
-
-**/
-BOOLEAN
-EFIAPI
-RandomBytes (
- OUT UINT8 *Output,
- IN UINTN Size
- )
-{
- //
- // Check input parameters.
- //
- if (Output == NULL || Size > INT_MAX) {
- return FALSE;
- }
-
- //
- // Generate random data.
- //
- if (RAND_bytes (Output, (UINT32) Size) != 1) {
- return FALSE;
- }
-
- return TRUE;
-}
|