123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223 |
- /** @file
- SHA-256 Digest Wrapper Implementation over OpenSSL.
- Copyright (c) 2009 - 2016, Intel Corporation. All rights reserved.<BR>
- SPDX-License-Identifier: BSD-2-Clause-Patent
- **/
- #include "InternalCryptLib.h"
- #include <openssl/sha.h>
- /**
- Retrieves the size, in bytes, of the context buffer required for SHA-256 hash operations.
- @return The size, in bytes, of the context buffer required for SHA-256 hash operations.
- **/
- UINTN
- EFIAPI
- Sha256GetContextSize (
- VOID
- )
- {
- //
- // Retrieves OpenSSL SHA-256 Context Size
- //
- return (UINTN) (sizeof (SHA256_CTX));
- }
- /**
- Initializes user-supplied memory pointed by Sha256Context as SHA-256 hash context for
- subsequent use.
- If Sha256Context is NULL, then return FALSE.
- @param[out] Sha256Context Pointer to SHA-256 context being initialized.
- @retval TRUE SHA-256 context initialization succeeded.
- @retval FALSE SHA-256 context initialization failed.
- **/
- BOOLEAN
- EFIAPI
- Sha256Init (
- OUT VOID *Sha256Context
- )
- {
- //
- // Check input parameters.
- //
- if (Sha256Context == NULL) {
- return FALSE;
- }
- //
- // OpenSSL SHA-256 Context Initialization
- //
- return (BOOLEAN) (SHA256_Init ((SHA256_CTX *) Sha256Context));
- }
- /**
- Makes a copy of an existing SHA-256 context.
- If Sha256Context is NULL, then return FALSE.
- If NewSha256Context is NULL, then return FALSE.
- @param[in] Sha256Context Pointer to SHA-256 context being copied.
- @param[out] NewSha256Context Pointer to new SHA-256 context.
- @retval TRUE SHA-256 context copy succeeded.
- @retval FALSE SHA-256 context copy failed.
- **/
- BOOLEAN
- EFIAPI
- Sha256Duplicate (
- IN CONST VOID *Sha256Context,
- OUT VOID *NewSha256Context
- )
- {
- //
- // Check input parameters.
- //
- if (Sha256Context == NULL || NewSha256Context == NULL) {
- return FALSE;
- }
- CopyMem (NewSha256Context, Sha256Context, sizeof (SHA256_CTX));
- return TRUE;
- }
- /**
- Digests the input data and updates SHA-256 context.
- This function performs SHA-256 digest on a data buffer of the specified size.
- It can be called multiple times to compute the digest of long or discontinuous data streams.
- SHA-256 context should be already correctly initialized by Sha256Init(), and should not be finalized
- by Sha256Final(). Behavior with invalid context is undefined.
- If Sha256Context is NULL, then return FALSE.
- @param[in, out] Sha256Context Pointer to the SHA-256 context.
- @param[in] Data Pointer to the buffer containing the data to be hashed.
- @param[in] DataSize Size of Data buffer in bytes.
- @retval TRUE SHA-256 data digest succeeded.
- @retval FALSE SHA-256 data digest failed.
- **/
- BOOLEAN
- EFIAPI
- Sha256Update (
- IN OUT VOID *Sha256Context,
- IN CONST VOID *Data,
- IN UINTN DataSize
- )
- {
- //
- // Check input parameters.
- //
- if (Sha256Context == NULL) {
- return FALSE;
- }
- //
- // Check invalid parameters, in case that only DataLength was checked in OpenSSL
- //
- if (Data == NULL && DataSize != 0) {
- return FALSE;
- }
- //
- // OpenSSL SHA-256 Hash Update
- //
- return (BOOLEAN) (SHA256_Update ((SHA256_CTX *) Sha256Context, Data, DataSize));
- }
- /**
- Completes computation of the SHA-256 digest value.
- This function completes SHA-256 hash computation and retrieves the digest value into
- the specified memory. After this function has been called, the SHA-256 context cannot
- be used again.
- SHA-256 context should be already correctly initialized by Sha256Init(), and should not be
- finalized by Sha256Final(). Behavior with invalid SHA-256 context is undefined.
- If Sha256Context is NULL, then return FALSE.
- If HashValue is NULL, then return FALSE.
- @param[in, out] Sha256Context Pointer to the SHA-256 context.
- @param[out] HashValue Pointer to a buffer that receives the SHA-256 digest
- value (32 bytes).
- @retval TRUE SHA-256 digest computation succeeded.
- @retval FALSE SHA-256 digest computation failed.
- **/
- BOOLEAN
- EFIAPI
- Sha256Final (
- IN OUT VOID *Sha256Context,
- OUT UINT8 *HashValue
- )
- {
- //
- // Check input parameters.
- //
- if (Sha256Context == NULL || HashValue == NULL) {
- return FALSE;
- }
- //
- // OpenSSL SHA-256 Hash Finalization
- //
- return (BOOLEAN) (SHA256_Final (HashValue, (SHA256_CTX *) Sha256Context));
- }
- /**
- Computes the SHA-256 message digest of a input data buffer.
- This function performs the SHA-256 message digest of a given data buffer, and places
- the digest value into the specified memory.
- If this interface is not supported, then return FALSE.
- @param[in] Data Pointer to the buffer containing the data to be hashed.
- @param[in] DataSize Size of Data buffer in bytes.
- @param[out] HashValue Pointer to a buffer that receives the SHA-256 digest
- value (32 bytes).
- @retval TRUE SHA-256 digest computation succeeded.
- @retval FALSE SHA-256 digest computation failed.
- @retval FALSE This interface is not supported.
- **/
- BOOLEAN
- EFIAPI
- Sha256HashAll (
- IN CONST VOID *Data,
- IN UINTN DataSize,
- OUT UINT8 *HashValue
- )
- {
- //
- // Check input parameters.
- //
- if (HashValue == NULL) {
- return FALSE;
- }
- if (Data == NULL && DataSize != 0) {
- return FALSE;
- }
- //
- // OpenSSL SHA-256 Hash Computation.
- //
- if (SHA256 (Data, DataSize, HashValue) == NULL) {
- return FALSE;
- } else {
- return TRUE;
- }
- }
|