author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 18 Jan 2010 20:22:35 +0200 | |
changeset 2 | 1c7bc153c08e |
parent 0 | c8830336c852 |
child 26 | 9abfd4f00d37 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2001-2006 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of the License "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: EAP and WLAN authentication protocols. |
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* |
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*/ |
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/* |
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* %version: 10 % |
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*/ |
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#if !defined( _EAP_AM_CRYPTO_SHA_256_H_ ) |
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#define _EAP_AM_CRYPTO_SHA_256_H_ |
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#include "eap_am_types.h" |
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#include "eap_variable_data.h" |
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#include "eap_am_export.h" |
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#include "eap_am_tools.h" |
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//-------------------------------------------------- |
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/// The eap_am_crypto_sha_256_c class includes the state of |
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/// one instance of SHA_256 algorithm. |
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class EAP_EXPORT eap_am_crypto_sha_256_c |
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{ |
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|
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private: |
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
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enum eap_sha_256_H_init |
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{ |
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EAP_SHA_256_INIT_H0 = 0x6a09e667, |
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EAP_SHA_256_INIT_H1 = 0xbb67ae85, |
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EAP_SHA_256_INIT_H2 = 0x3c6ef372, |
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EAP_SHA_256_INIT_H3 = 0xa54ff53a, |
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EAP_SHA_256_INIT_H4 = 0x510e527f, |
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EAP_SHA_256_INIT_H5 = 0x9b05688c, |
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EAP_SHA_256_INIT_H6 = 0x1f83d9ab, |
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EAP_SHA_256_INIT_H7 = 0x5be0cd19, |
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}; |
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|
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enum eap_sha_256_sizes |
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{ |
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EAP_AM_CRYPTO_SHA_256_BLOCK_u32_COUNT = 16ul, ///< 16 u32_t integers. |
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EAP_AM_CRYPTO_SHA_256_BLOCK_BYTE_SIZE |
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= EAP_AM_CRYPTO_SHA_256_BLOCK_u32_COUNT |
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* sizeof(u32_t), ///< in bytes. |
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EAP_AM_CRYPTO_SHA_256_DIGEST_BUFFER_u32_COUNT |
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= 8ul, ///< 8 u32_t integers. |
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EAP_AM_CRYPTO_SHA_256_DIGEST_BUFFER_BYTE_SIZE |
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= EAP_AM_CRYPTO_SHA_256_DIGEST_BUFFER_u32_COUNT |
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* sizeof(u32_t), ///< in bytes. |
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EAP_AM_CRYPTO_SHA_256_SCHEDULE_u32_COUNT = 64ul, ///< 64 u32_t integers. |
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}; |
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
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/// This is pointer to the tools class. |
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abs_eap_am_tools_c * const m_am_tools; |
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/// This buffer saves remaining data between subsequent calls |
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/// of hash_update(). |
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eap_variable_data_c m_saved_data; |
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/// This attribute saves the length of hashed data. |
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u64_t m_full_hashed_data_length; |
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/// Array of 16 temporary 32-bit unsigned integers. |
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u32_t m_T[EAP_AM_CRYPTO_SHA_256_BLOCK_u32_COUNT]; |
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static const unsigned long m_K[EAP_AM_CRYPTO_SHA_256_SCHEDULE_u32_COUNT]; |
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u32_t m_M_in_host_order[EAP_AM_CRYPTO_SHA_256_BLOCK_u32_COUNT]; |
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/// This buffer saves the digest value between subsequent call |
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/// of hash_update(). |
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u32_t m_H[EAP_AM_CRYPTO_SHA_256_DIGEST_BUFFER_u32_COUNT]; |
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/// This indicates whether this object was generated successfully. |
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bool m_is_valid; |
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
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inline u32_t eap_sha_256_rotate( |
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const u32_t value, |
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const u32_t shift |
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); |
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/// @param W is an array of modulo 16 input 32-bit unsigned integers |
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/// in host order. |
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/// @param W_count is count of integers in W array. |
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EAP_FUNC_IMPORT eap_status_e eap_sha_256_process_data_host_order( |
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const u32_t * W, |
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u32_t W_count |
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); |
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/// @param W is an array of modulo 16 input 32-bit unsigned integers |
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/// in host order. |
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/// @param W_count is count of integers in W array. |
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EAP_FUNC_IMPORT eap_status_e eap_sha_256_process_data_network_order( |
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const u32_t * W, |
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u32_t W_count |
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); |
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/** |
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* This function cleans up the SHA_256 context. |
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*/ |
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EAP_FUNC_IMPORT eap_status_e hash_cleanup(); |
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|
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/** |
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* This function copies the message digest to output buffer. |
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*/ |
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EAP_FUNC_IMPORT eap_status_e copy_message_digest( |
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void * const output, |
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u32_t * const max_output_size); |
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/** |
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* The set_is_invalid() function sets the state of the eap_am_crypto_md4_c |
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* object invalid. |
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* The eap_am_crypto_md4_c object calls this function after it is |
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* initialized. |
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*/ |
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EAP_FUNC_IMPORT void set_is_invalid(); |
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|
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/** |
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* The set_is_valid() function sets the state of the eap_am_crypto_md4_c |
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* object valid. |
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* The eap_am_crypto_md4_c object calls this function after it is |
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* initialized. |
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*/ |
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EAP_FUNC_IMPORT void set_is_valid(); |
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|
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/** |
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* This function copies the context of SHA_256. |
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*/ |
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EAP_FUNC_IMPORT eap_status_e copy_context( |
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const eap_variable_data_c * const saved_data, |
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const u64_t full_hashed_data_length, |
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const u32_t * const H, |
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const u32_t * const T, |
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const u32_t * const W_in_host_order); |
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
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public: |
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
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|
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/** |
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* Destructor does nothing special. |
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*/ |
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EAP_FUNC_IMPORT virtual ~eap_am_crypto_sha_256_c(); |
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|
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/** |
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* Constructor initializes the member attributes. |
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*/ |
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EAP_FUNC_IMPORT eap_am_crypto_sha_256_c(abs_eap_am_tools_c * const tools); |
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|
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/** |
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* The get_is_valid() function returns the status of the |
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* eap_am_crypto_md4_c object. |
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* True indicates the object is allocated successfully. |
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*/ |
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EAP_FUNC_IMPORT bool get_is_valid(); |
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/** |
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* This function returns the size of message digest of HASH-algorithm. |
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*/ |
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EAP_FUNC_IMPORT u32_t get_digest_length(); |
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|
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/** |
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* This function returns the size of block of HASH-algorithm. |
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*/ |
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EAP_FUNC_IMPORT u32_t get_block_size(); |
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|
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/** |
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* This function initializes the context of SHA_256-algorithm. |
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*/ |
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EAP_FUNC_IMPORT eap_status_e hash_init(); |
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|
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/** |
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* This function updates the context of SHA_256-algorithm with data. |
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*/ |
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EAP_FUNC_IMPORT eap_status_e hash_update( |
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const void * const data, |
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const u32_t data_length); |
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|
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/** |
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* This function writes the message digest to buffer. |
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* @param Length is set if md_length_or_null is non-NULL. |
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*/ |
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EAP_FUNC_IMPORT eap_status_e hash_final( |
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void * const message_digest, |
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u32_t *md_length_or_null); |
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/** |
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* This function copies the context of SHA_256. |
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*/ |
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EAP_FUNC_IMPORT eap_am_crypto_sha_256_c * copy(); |
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}; |
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//-------------------------------------------------- |
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#endif //#if !defined( _EAP_AM_CRYPTO_SHA_256_H_ ) |
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// End. |