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-rw-r--r--CryptoPkg/Library/BaseCryptLib/Hmac/CryptHmacSha1.c185
1 files changed, 185 insertions, 0 deletions
diff --git a/CryptoPkg/Library/BaseCryptLib/Hmac/CryptHmacSha1.c b/CryptoPkg/Library/BaseCryptLib/Hmac/CryptHmacSha1.c
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+++ b/CryptoPkg/Library/BaseCryptLib/Hmac/CryptHmacSha1.c
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+/** @file
+ HMAC-SHA1 Wrapper Implementation over OpenSSL.
+
+Copyright (c) 2010, 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/hmac.h>
+
+/**
+ Retrieves the size, in bytes, of the context buffer required for HMAC-SHA1 operations.
+
+ @return The size, in bytes, of the context buffer required for HMAC-SHA1 operations.
+
+**/
+UINTN
+EFIAPI
+HmacSha1GetContextSize (
+ VOID
+ )
+{
+ //
+ // Retrieves the OpenSSL HMAC-SHA1 Context Size
+ //
+ return (UINTN)(sizeof (HMAC_CTX));
+}
+
+/**
+ Initializes user-supplied memory pointed by HmacSha1Context as HMAC-SHA1 context for
+ subsequent use.
+
+ If HmacSha1Context is NULL, then ASSERT().
+
+ @param[out] HmacSha1Context Pointer to HMAC-SHA1 context being initialized.
+ @param[in] Key Pointer to the user-supplied key.
+ @param[in] KeySize Key size in bytes.
+
+ @retval TRUE HMAC-SHA1 context initialization succeeded.
+ @retval FALSE HMAC-SHA1 context initialization failed.
+
+**/
+BOOLEAN
+EFIAPI
+HmacSha1Init (
+ OUT VOID *HmacSha1Context,
+ IN CONST UINT8 *Key,
+ IN UINTN KeySize
+ )
+{
+ //
+ // ASSERT if HmacSha1Context is NULL.
+ //
+ ASSERT (HmacSha1Context != NULL);
+
+ //
+ // OpenSSL HMAC-SHA1 Context Initialization
+ //
+ HMAC_CTX_init (HmacSha1Context);
+ HMAC_Init_ex (HmacSha1Context, Key, (UINT32) KeySize, EVP_sha1(), NULL);
+
+ return TRUE;
+}
+
+/**
+ Makes a copy of an existing HMAC-SHA1 context.
+
+ If HmacSha1Context is NULL, then ASSERT().
+ If NewHmacSha1Context is NULL, then ASSERT().
+
+ @param[in] HmacSha1Context Pointer to HMAC-SHA1 context being copied.
+ @param[out] NewHmacSha1Context Pointer to new HMAC-SHA1 context.
+
+ @retval TRUE HMAC-SHA1 context copy succeeded.
+ @retval FALSE HMAC-SHA1 context copy failed.
+
+**/
+BOOLEAN
+EFIAPI
+HmacSha1Duplicate (
+ IN CONST VOID *HmacSha1Context,
+ OUT VOID *NewHmacSha1Context
+ )
+{
+ CopyMem (NewHmacSha1Context, HmacSha1Context, sizeof (HMAC_CTX));
+
+ return TRUE;
+}
+
+/**
+ Digests the input data and updates HMAC-SHA1 context.
+
+ This function performs HMAC-SHA1 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.
+ HMAC-SHA1 context should be already correctly intialized by HmacSha1Init(), and should not
+ be finalized by HmacSha1Final(). Behavior with invalid context is undefined.
+
+ If HmacSha1Context is NULL, then ASSERT().
+
+ @param[in, out] HmacSha1Context Pointer to the HMAC-SHA1 context.
+ @param[in] Data Pointer to the buffer containing the data to be digested.
+ @param[in] DataSize Size of Data buffer in bytes.
+
+ @retval TRUE HMAC-SHA1 data digest succeeded.
+ @retval FALSE HMAC-SHA1 data digest failed.
+
+**/
+BOOLEAN
+EFIAPI
+HmacSha1Update (
+ IN OUT VOID *HmacSha1Context,
+ IN CONST VOID *Data,
+ IN UINTN DataSize
+ )
+{
+ //
+ // ASSERT if HmacSha1Context is NULL
+ //
+ ASSERT (HmacSha1Context != NULL);
+
+ //
+ // ASSERT if invalid parameters, in case that only DataLength was checked in OpenSSL
+ //
+ if (Data == NULL) {
+ ASSERT (DataSize == 0);
+ }
+
+ //
+ // OpenSSL HMAC-SHA1 digest update
+ //
+ HMAC_Update (HmacSha1Context, Data, DataSize);
+
+ return TRUE;
+}
+
+/**
+ Completes computation of the HMAC-SHA1 digest value.
+
+ This function completes HMAC-SHA1 digest computation and retrieves the digest value into
+ the specified memory. After this function has been called, the HMAC-SHA1 context cannot
+ be used again.
+ HMAC-SHA1 context should be already correctly intialized by HmacSha1Init(), and should
+ not be finalized by HmacSha1Final(). Behavior with invalid HMAC-SHA1 context is undefined.
+
+ If HmacSha1Context is NULL, then ASSERT().
+ If HmacValue is NULL, then ASSERT().
+
+ @param[in, out] HmacSha1Context Pointer to the HMAC-SHA1 context.
+ @param[out] HmacValue Pointer to a buffer that receives the HMAC-SHA1 digest
+ value (20 bytes).
+
+ @retval TRUE HMAC-SHA1 digest computation succeeded.
+ @retval FALSE HMAC-SHA1 digest computation failed.
+
+**/
+BOOLEAN
+EFIAPI
+HmacSha1Final (
+ IN OUT VOID *HmacSha1Context,
+ OUT UINT8 *HmacValue
+ )
+{
+ UINT32 Length;
+
+ //
+ // ASSERT if HmacSha1Context is NULL or HmacValue is NULL
+ //
+ ASSERT (HmacSha1Context != NULL);
+ ASSERT (HmacValue != NULL);
+
+ //
+ // OpenSSL HMAC-SHA1 digest finalization
+ //
+ HMAC_Final (HmacSha1Context, HmacValue, &Length);
+ HMAC_CTX_cleanup (HmacSha1Context);
+
+ return TRUE;
+}