+++ /dev/null
-/** @file\r
- ARC4 Wrapper Implementation over OpenSSL.\r
-\r
-Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>\r
-SPDX-License-Identifier: BSD-2-Clause-Patent\r
-\r
-**/\r
-\r
-#include "InternalCryptLib.h"\r
-#include <openssl/rc4.h>\r
-\r
-/**\r
- Retrieves the size, in bytes, of the context buffer required for ARC4 operations.\r
-\r
- @return The size, in bytes, of the context buffer required for ARC4 operations.\r
-\r
-**/\r
-UINTN\r
-EFIAPI\r
-Arc4GetContextSize (\r
- VOID\r
- )\r
-{\r
- //\r
- // Memory for 2 copies of RC4_KEY is allocated, one for working copy, and the other\r
- // for backup copy. When Arc4Reset() is called, we can use the backup copy to restore\r
- // the working copy to the initial state.\r
- //\r
- return (UINTN) (2 * sizeof (RC4_KEY));\r
-}\r
-\r
-/**\r
- Initializes user-supplied memory as ARC4 context for subsequent use.\r
-\r
- This function initializes user-supplied memory pointed by Arc4Context as ARC4 context.\r
- In addition, it sets up all ARC4 key materials for subsequent encryption and decryption\r
- operations.\r
-\r
- If Arc4Context is NULL, then return FALSE.\r
- If Key is NULL, then return FALSE.\r
- If KeySize does not in the range of [5, 256] bytes, then return FALSE.\r
-\r
- @param[out] Arc4Context Pointer to ARC4 context being initialized.\r
- @param[in] Key Pointer to the user-supplied ARC4 key.\r
- @param[in] KeySize Size of ARC4 key in bytes.\r
-\r
- @retval TRUE ARC4 context initialization succeeded.\r
- @retval FALSE ARC4 context initialization failed.\r
-\r
-**/\r
-BOOLEAN\r
-EFIAPI\r
-Arc4Init (\r
- OUT VOID *Arc4Context,\r
- IN CONST UINT8 *Key,\r
- IN UINTN KeySize\r
- )\r
-{\r
- RC4_KEY *Rc4Key;\r
-\r
- //\r
- // Check input parameters.\r
- //\r
- if (Arc4Context == NULL || Key == NULL || (KeySize < 5 || KeySize > 256)) {\r
- return FALSE;\r
- }\r
-\r
- Rc4Key = (RC4_KEY *) Arc4Context;\r
-\r
- RC4_set_key (Rc4Key, (UINT32) KeySize, Key);\r
-\r
- CopyMem (Rc4Key + 1, Rc4Key, sizeof (RC4_KEY));\r
-\r
- return TRUE;\r
-}\r
-\r
-/**\r
- Performs ARC4 encryption on a data buffer of the specified size.\r
-\r
- This function performs ARC4 encryption on data buffer pointed by Input, of specified\r
- size of InputSize.\r
- Arc4Context should be already correctly initialized by Arc4Init(). Behavior with\r
- invalid ARC4 context is undefined.\r
-\r
- If Arc4Context is NULL, then return FALSE.\r
- If Input is NULL, then return FALSE.\r
- If Output is NULL, then return FALSE.\r
-\r
- @param[in, out] Arc4Context Pointer to the ARC4 context.\r
- @param[in] Input Pointer to the buffer containing the data to be encrypted.\r
- @param[in] InputSize Size of the Input buffer in bytes.\r
- @param[out] Output Pointer to a buffer that receives the ARC4 encryption output.\r
-\r
- @retval TRUE ARC4 encryption succeeded.\r
- @retval FALSE ARC4 encryption failed.\r
-\r
-**/\r
-BOOLEAN\r
-EFIAPI\r
-Arc4Encrypt (\r
- IN OUT VOID *Arc4Context,\r
- IN CONST UINT8 *Input,\r
- IN UINTN InputSize,\r
- OUT UINT8 *Output\r
- )\r
-{\r
- RC4_KEY *Rc4Key;\r
-\r
- //\r
- // Check input parameters.\r
- //\r
- if (Arc4Context == NULL || Input == NULL || Output == NULL || InputSize > INT_MAX) {\r
- return FALSE;\r
- }\r
-\r
- Rc4Key = (RC4_KEY *) Arc4Context;\r
-\r
- RC4 (Rc4Key, (UINT32) InputSize, Input, Output);\r
-\r
- return TRUE;\r
-}\r
-\r
-/**\r
- Performs ARC4 decryption on a data buffer of the specified size.\r
-\r
- This function performs ARC4 decryption on data buffer pointed by Input, of specified\r
- size of InputSize.\r
- Arc4Context should be already correctly initialized by Arc4Init(). Behavior with\r
- invalid ARC4 context is undefined.\r
-\r
- If Arc4Context is NULL, then return FALSE.\r
- If Input is NULL, then return FALSE.\r
- If Output is NULL, then return FALSE.\r
-\r
- @param[in, out] Arc4Context Pointer to the ARC4 context.\r
- @param[in] Input Pointer to the buffer containing the data to be decrypted.\r
- @param[in] InputSize Size of the Input buffer in bytes.\r
- @param[out] Output Pointer to a buffer that receives the ARC4 decryption output.\r
-\r
- @retval TRUE ARC4 decryption succeeded.\r
- @retval FALSE ARC4 decryption failed.\r
-\r
-**/\r
-BOOLEAN\r
-EFIAPI\r
-Arc4Decrypt (\r
- IN OUT VOID *Arc4Context,\r
- IN UINT8 *Input,\r
- IN UINTN InputSize,\r
- OUT UINT8 *Output\r
- )\r
-{\r
- RC4_KEY *Rc4Key;\r
-\r
- //\r
- // Check input parameters.\r
- //\r
- if (Arc4Context == NULL || Input == NULL || Output == NULL || InputSize > INT_MAX) {\r
- return FALSE;\r
- }\r
-\r
- Rc4Key = (RC4_KEY *) Arc4Context;\r
-\r
- RC4 (Rc4Key, (UINT32) InputSize, Input, Output);\r
-\r
- return TRUE;\r
-}\r
-\r
-/**\r
- Resets the ARC4 context to the initial state.\r
-\r
- The function resets the ARC4 context to the state it had immediately after the\r
- ARC4Init() function call.\r
- Contrary to ARC4Init(), Arc4Reset() requires no secret key as input, but ARC4 context\r
- should be already correctly initialized by ARC4Init().\r
-\r
- If Arc4Context is NULL, then return FALSE.\r
-\r
- @param[in, out] Arc4Context Pointer to the ARC4 context.\r
-\r
- @retval TRUE ARC4 reset succeeded.\r
- @retval FALSE ARC4 reset failed.\r
-\r
-**/\r
-BOOLEAN\r
-EFIAPI\r
-Arc4Reset (\r
- IN OUT VOID *Arc4Context\r
- )\r
-{\r
- RC4_KEY *Rc4Key;\r
-\r
- //\r
- // Check input parameters.\r
- //\r
- if (Arc4Context == NULL) {\r
- return FALSE;\r
- }\r
-\r
- Rc4Key = (RC4_KEY *) Arc4Context;\r
-\r
- CopyMem (Rc4Key, Rc4Key + 1, sizeof (RC4_KEY));\r
-\r
- return TRUE;\r
-}\r
projects / mirror_edk2.git / blobdiff