From bbfd2ab18f52600aa41f061b2da9a2afe2a9d6ac Mon Sep 17 00:00:00 2001
From: Mathieu Trudel-Lapierre <cyphermox@ubuntu.com>
Date: Fri, 4 Aug 2017 12:10:50 -0400
Subject: Import Upstream version 0.9+1474479173.6c180c6

---
 Cryptlib/Hmac/CryptHmacMd5.c | 197 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 197 insertions(+)
 create mode 100644 Cryptlib/Hmac/CryptHmacMd5.c

(limited to 'Cryptlib/Hmac/CryptHmacMd5.c')

diff --git a/Cryptlib/Hmac/CryptHmacMd5.c b/Cryptlib/Hmac/CryptHmacMd5.c
new file mode 100644
index 00000000..693cd322
--- /dev/null
+++ b/Cryptlib/Hmac/CryptHmacMd5.c
@@ -0,0 +1,197 @@
+/** @file
+  HMAC-MD5 Wrapper Implementation over OpenSSL.
+
+Copyright (c) 2010 - 2012, 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-MD5 operations.
+
+  @return  The size, in bytes, of the context buffer required for HMAC-MD5 operations.
+
+**/
+UINTN
+EFIAPI
+HmacMd5GetContextSize (
+  VOID
+  )
+{
+  //
+  // Retrieves the OpenSSL HMAC-MD5 Context Size
+  //
+  return (UINTN) (sizeof (HMAC_CTX));
+}
+
+/**
+  Initializes user-supplied memory pointed by HmacMd5Context as HMAC-MD5 context for
+  subsequent use.
+
+  If HmacMd5Context is NULL, then return FALSE.
+
+  @param[out]  HmacMd5Context  Pointer to HMAC-MD5 context being initialized.
+  @param[in]   Key             Pointer to the user-supplied key.
+  @param[in]   KeySize         Key size in bytes.
+
+  @retval TRUE   HMAC-MD5 context initialization succeeded.
+  @retval FALSE  HMAC-MD5 context initialization failed.
+
+**/
+BOOLEAN
+EFIAPI
+HmacMd5Init (
+  OUT  VOID         *HmacMd5Context,
+  IN   CONST UINT8  *Key,
+  IN   UINTN        KeySize
+  )
+{
+  //
+  // Check input parameters.
+  //
+  if (HmacMd5Context == NULL || KeySize > INT_MAX) {
+    return FALSE;
+  }
+
+  //
+  // OpenSSL HMAC-MD5 Context Initialization
+  //
+  HMAC_CTX_init (HmacMd5Context);
+  HMAC_Init_ex (HmacMd5Context, Key, (UINT32) KeySize, EVP_md5(), NULL);
+
+  return TRUE;
+}
+
+/**
+  Makes a copy of an existing HMAC-MD5 context.
+
+  If HmacMd5Context is NULL, then return FALSE.
+  If NewHmacMd5Context is NULL, then return FALSE.
+
+  @param[in]  HmacMd5Context     Pointer to HMAC-MD5 context being copied.
+  @param[out] NewHmacMd5Context  Pointer to new HMAC-MD5 context.
+
+  @retval TRUE   HMAC-MD5 context copy succeeded.
+  @retval FALSE  HMAC-MD5 context copy failed.
+
+**/
+BOOLEAN
+EFIAPI
+HmacMd5Duplicate (
+  IN   CONST VOID  *HmacMd5Context,
+  OUT  VOID        *NewHmacMd5Context
+  )
+{
+  //
+  // Check input parameters.
+  //
+  if (HmacMd5Context == NULL || NewHmacMd5Context == NULL) {
+    return FALSE;
+  }
+  
+  CopyMem (NewHmacMd5Context, HmacMd5Context, sizeof (HMAC_CTX));
+
+  return TRUE;
+}
+
+/**
+  Digests the input data and updates HMAC-MD5 context.
+
+  This function performs HMAC-MD5 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-MD5 context should be already correctly intialized by HmacMd5Init(), and should not be
+  finalized by HmacMd5Final(). Behavior with invalid context is undefined.
+
+  If HmacMd5Context is NULL, then return FALSE.
+
+  @param[in, out]  HmacMd5Context  Pointer to the HMAC-MD5 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-MD5 data digest succeeded.
+  @retval FALSE  HMAC-MD5 data digest failed.
+
+**/
+BOOLEAN
+EFIAPI
+HmacMd5Update (
+  IN OUT  VOID        *HmacMd5Context,
+  IN      CONST VOID  *Data,
+  IN      UINTN       DataSize
+  )
+{
+  //
+  // Check input parameters.
+  //
+  if (HmacMd5Context == NULL) {
+    return FALSE;
+  }
+
+  //
+  // Check invalid parameters, in case that only DataLength was checked in OpenSSL
+  //
+  if (Data == NULL && DataSize != 0) {
+    return FALSE;
+  }
+
+  //
+  // OpenSSL HMAC-MD5 digest update
+  //
+  HMAC_Update (HmacMd5Context, Data, DataSize);
+
+  return TRUE;
+}
+
+/**
+  Completes computation of the HMAC-MD5 digest value.
+
+  This function completes HMAC-MD5 digest computation and retrieves the digest value into
+  the specified memory. After this function has been called, the HMAC-MD5 context cannot
+  be used again.
+  HMAC-MD5 context should be already correctly intialized by HmacMd5Init(), and should not be
+  finalized by HmacMd5Final(). Behavior with invalid HMAC-MD5 context is undefined.
+
+  If HmacMd5Context is NULL, then return FALSE.
+  If HmacValue is NULL, then return FALSE.
+
+  @param[in, out]  HmacMd5Context  Pointer to the HMAC-MD5 context.
+  @param[out]      HmacValue       Pointer to a buffer that receives the HMAC-MD5 digest
+                                   value (16 bytes).
+
+  @retval TRUE   HMAC-MD5 digest computation succeeded.
+  @retval FALSE  HMAC-MD5 digest computation failed.
+
+**/
+BOOLEAN
+EFIAPI
+HmacMd5Final (
+  IN OUT  VOID   *HmacMd5Context,
+  OUT     UINT8  *HmacValue
+  )
+{
+  UINT32  Length;
+
+  //
+  // Check input parameters.
+  //
+  if (HmacMd5Context == NULL || HmacValue == NULL) {
+    return FALSE;
+  }
+
+  //
+  // OpenSSL HMAC-MD5 digest finalization
+  //
+  HMAC_Final (HmacMd5Context, HmacValue, &Length);
+  HMAC_CTX_cleanup (HmacMd5Context);
+
+  return TRUE;
+}
-- 
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