1 files changed, 133 insertions, 0 deletions
diff --git a/NetworkPkg/IpSecDxe/IpSecCryptIo.c b/NetworkPkg/IpSecDxe/IpSecCryptIo.c
new file mode 100644
index 000000000..7011f98b0
--- /dev/null
+++ b/NetworkPkg/IpSecDxe/IpSecCryptIo.c
@@ -0,0 +1,133 @@
+/** @file
+  Common operation for Security.
+
+  Copyright (c) 2009 - 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 "IpSecCryptIo.h"
+//
+// Alogrithm's informations for the Encrypt/Decrpt Alogrithm.
+//
+ENCRYPT_ALGORITHM mIpsecEncryptAlgorithmList[IPSEC_ENCRYPT_ALGORITHM_LIST_SIZE] = {
+  {EFI_IPSEC_EALG_NULL, 0, 0, 1, NULL, NULL, NULL, NULL},
+  {(UINT8)-1,           0, 0, 0, NULL, NULL, NULL, NULL}
+};
+//
+// Alogrithm's informations for the Authentication algorithm
+//
+AUTH_ALGORITHM mIpsecAuthAlgorithmList[IPSEC_AUTH_ALGORITHM_LIST_SIZE] = {
+  {EFI_IPSEC_AALG_NONE, 0, 0, 0, NULL, NULL, NULL, NULL},
+  {EFI_IPSEC_AALG_NULL, 0, 0, 0, NULL, NULL, NULL, NULL},
+  {(UINT8)-1,           0, 0, 0, NULL, NULL, NULL, NULL}
+};
+
+
+/**
+  Get the block size of encrypt alogrithm. The block size is based on the algorithm used.
+
+  @param[in]  AlgorithmId          The encrypt algorithm ID.
+
+  @return The value of block size.
+
+**/
+UINTN
+IpSecGetEncryptBlockSize (
+  IN UINT8   AlgorithmId
+  )
+{
+  UINT8 Index;
+
+  for (Index = 0; Index < IPSEC_ENCRYPT_ALGORITHM_LIST_SIZE; Index++) {
+    if (AlgorithmId == mIpsecEncryptAlgorithmList[Index].AlgorithmId) {
+      //
+      // The BlockSize is same with IvSize.
+      //
+      return mIpsecEncryptAlgorithmList[Index].BlockSize;
+    }
+  }
+
+  return (UINTN) -1;
+}
+
+/**
+  Get the IV size of encrypt alogrithm. The IV size is based on the algorithm used.
+
+  @param[in]  AlgorithmId          The encrypt algorithm ID.
+
+  @return The value of IV size.
+
+**/
+UINTN
+IpSecGetEncryptIvLength (
+  IN UINT8 AlgorithmId
+  )
+{
+  UINT8 Index;
+
+  for (Index = 0; Index < IPSEC_ENCRYPT_ALGORITHM_LIST_SIZE; Index++) {
+    if (AlgorithmId == mIpsecEncryptAlgorithmList[Index].AlgorithmId) {
+      //
+      // The BlockSize is same with IvSize.
+      //
+      return mIpsecEncryptAlgorithmList[Index].IvLength;
+    }
+  }
+
+  return (UINTN) -1;
+}
+
+/**
+  Get the ICV size of Authenticaion alogrithm. The ICV size is based on the algorithm used.
+
+  @param[in]  AuthAlgorithmId          The Authentication algorithm ID.
+
+  @return The value of ICV size.
+
+**/
+UINTN
+IpSecGetIcvLength (
+  IN UINT8  AuthAlgorithmId
+  )
+{
+  UINT8 Index;
+  for (Index = 0; Index < IPSEC_AUTH_ALGORITHM_LIST_SIZE; Index++) {
+    if (AuthAlgorithmId == mIpsecAuthAlgorithmList[Index].AlgorithmId) {
+      return mIpsecAuthAlgorithmList[Index].IcvLength;
+    }
+  }
+  return (UINTN) -1;
+}
+
+/**
+  Generate a random data for IV. If the IvSize is zero, not needed to create
+  IV and return EFI_SUCCESS.
+
+  @param[in]  IvBuffer  The pointer of the IV buffer.
+  @param[in]  IvSize    The IV size.
+
+  @retval     EFI_SUCCESS  Create a random data for IV.
+
+**/
+EFI_STATUS
+IpSecGenerateIv (
+  IN UINT8                           *IvBuffer,
+  IN UINTN                           IvSize
+  )
+{
+  if (IvSize != 0) {
+    //
+    //TODO: return CryptGenerateRandom (IvBuffer, IvSize);
+    //
+    return EFI_SUCCESS;
+  }
+  return EFI_SUCCESS;
+}