diff options
Diffstat (limited to 'CryptoPkg/Library/BaseCryptLib/Hash/CryptSha256.c')
| -rw-r--r-- | CryptoPkg/Library/BaseCryptLib/Hash/CryptSha256.c | 70 |
1 files changed, 48 insertions, 22 deletions
diff --git a/CryptoPkg/Library/BaseCryptLib/Hash/CryptSha256.c b/CryptoPkg/Library/BaseCryptLib/Hash/CryptSha256.c index 9b566a4c59..7e6c6c691f 100644 --- a/CryptoPkg/Library/BaseCryptLib/Hash/CryptSha256.c +++ b/CryptoPkg/Library/BaseCryptLib/Hash/CryptSha256.c @@ -12,17 +12,13 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. **/
-#include <Library/BaseLib.h>
-#include <Library/DebugLib.h>
-
-#include <Library/BaseCryptLib.h>
+#include "InternalCryptLib.h"
#include <openssl/sha.h>
-
/**
- Retrieves the size, in bytes, of the context buffer required for SHA-256 operations.
+ 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 operations.
+ @return The size, in bytes, of the context buffer required for SHA-256 hash operations.
**/
UINTN
@@ -37,14 +33,13 @@ Sha256GetContextSize ( 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 ASSERT().
- @param[in, out] Sha256Context Pointer to SHA-256 Context being initialized.
+ @param[out] Sha256Context Pointer to SHA-256 context being initialized.
@retval TRUE SHA-256 context initialization succeeded.
@retval FALSE SHA-256 context initialization failed.
@@ -53,7 +48,7 @@ Sha256GetContextSize ( BOOLEAN
EFIAPI
Sha256Init (
- IN OUT VOID *Sha256Context
+ OUT VOID *Sha256Context
)
{
//
@@ -67,20 +62,47 @@ Sha256Init ( return (BOOLEAN) (SHA256_Init ((SHA256_CTX *)Sha256Context));
}
+/**
+ Makes a copy of an existing SHA-256 context.
+
+ If Sha256Context is NULL, then ASSERT().
+ If NewSha256Context is NULL, then ASSERT().
+
+ @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
+ )
+{
+ CopyMem (NewSha256Context, Sha256Context, sizeof (SHA256_CTX));
+
+ return TRUE;
+}
/**
- Performs SHA-256 digest on a data buffer of the specified length. This function can
- be called multiple times to compute the digest of long or discontinuous data streams.
+ 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 intialized by Sha256Init(), and should not be finalized
+ by Sha256Final(). Behavior with invalid context is undefined.
If Sha256Context is NULL, then ASSERT().
@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] DataLength Length of Data buffer in bytes.
+ @param[in] DataSize Size of Data buffer in bytes.
@retval TRUE SHA-256 data digest succeeded.
- @retval FALSE Invalid SHA-256 context. After Sha256Final function has been called, the
- SHA-256 context cannot be reused.
+ @retval FALSE SHA-256 data digest failed.
**/
BOOLEAN
@@ -88,7 +110,7 @@ EFIAPI Sha256Update (
IN OUT VOID *Sha256Context,
IN CONST VOID *Data,
- IN UINTN DataLength
+ IN UINTN DataSize
)
{
//
@@ -100,24 +122,28 @@ Sha256Update ( // ASSERT if invalid parameters, in case that only DataLength was checked in OpenSSL
//
if (Data == NULL) {
- ASSERT (DataLength == 0);
+ ASSERT (DataSize == 0);
}
//
// OpenSSL SHA-256 Hash Update
//
- return (BOOLEAN) (SHA256_Update ((SHA256_CTX *)Sha256Context, Data, DataLength));
+ return (BOOLEAN) (SHA256_Update ((SHA256_CTX *)Sha256Context, Data, DataSize));
}
-
/**
- 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.
+ 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 intialized by Sha256Init(), and should not be
+ finalized by Sha256Final(). Behavior with invalid SHA-256 context is undefined.
If Sha256Context is NULL, then ASSERT().
If HashValue is NULL, then ASSERT().
- @param[in, out] Sha256Context Pointer to SHA-256 context
+ @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).
|