eapol/eapol_framework/eapol_common/am/include/eap_am_crypto_openssl.h
changeset 0 c8830336c852
child 2 1c7bc153c08e
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/eapol/eapol_framework/eapol_common/am/include/eap_am_crypto_openssl.h	Thu Dec 17 08:47:43 2009 +0200
@@ -0,0 +1,704 @@
+/*
+* Copyright (c) 2001-2006 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  EAP and WLAN authentication protocols.
+*
+*/
+
+
+
+
+#if !defined( _EAP_AM_CRYPTO_OPENSSL_H_ )
+#define _EAP_AM_CRYPTO_OPENSSL_H_
+
+#include "eap_am_types.h"
+#include "eap_variable_data.h"
+#include "eap_am_export.h"
+#include "eap_am_tools.h"
+#include "eap_array.h"
+#include "abs_eap_am_crypto.h"
+#if defined(USE_EAP_RANDOM_TEST)
+#include "eap_am_random_test.h"
+#endif //#if defined(USE_EAP_RANDOM_TEST)
+
+#if defined(des_set_key)
+// OpenSSL defines this.
+#undef des_set_key
+#endif //#if defined(des_set_key)
+
+class abs_eap_am_tools_c;
+class eap_variable_data_c;
+
+const u32_t EAP_HW_TICKS_SEED_BUFFER_SIZE = 8u;
+
+/// Class eap_am_crypto_openssl_c offers services to authenticate data,
+/// encrypt data, decrypt data, generate keys and generate cryptographically
+/// strong random data.
+class EAP_EXPORT eap_am_crypto_openssl_c 
+: public abs_eap_am_crypto_c
+{
+private:
+	// - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+	/// This is pointer to the tools class.
+	abs_eap_am_tools_c * const m_am_tools;
+
+#if defined(USE_EAP_RANDOM_TEST)
+	/// This is used because of the random generator of OpenSSL does some
+	/// memory violations that valgrind founds.
+	eap_am_random_test_c m_test_random;
+#endif //#if defined(USE_EAP_RANDOM_TEST)
+
+	bool m_use_test_random;
+
+	/// This indicates whether this object was generated successfully.
+	bool m_is_valid;
+
+	u8_t m_hw_ticks_seed_buffer[EAP_HW_TICKS_SEED_BUFFER_SIZE];
+	u32_t m_hw_ticks_seed_index;
+
+	// - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+public:
+	// - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+
+	static abs_eap_am_tools_c * g_tools;
+
+	/**
+	 * Destructor does nothing special.
+	 */
+	EAP_FUNC_IMPORT virtual ~eap_am_crypto_openssl_c();
+
+	/**
+	 * Constructor initializes the member attributes.
+	 */
+	EAP_FUNC_IMPORT eap_am_crypto_openssl_c(abs_eap_am_tools_c * const tools);
+
+	/**
+	 * The configure() function is called after the constructor of the 
+	 * object is successfully executed. During the function call the object 
+	 * could query the configuration. Each derived class must define this
+	 * function. Needed configuration depends on the implementation.
+	 */
+	EAP_FUNC_IMPORT eap_status_e configure();
+
+	// - - - - - - - - - - - - - - - - - - - - - - - -
+
+	EAP_FUNC_IMPORT bool get_is_valid() const
+	{
+		return m_is_valid;
+	}
+	EAP_FUNC_IMPORT void set_is_valid()
+	{
+		m_is_valid = true;
+	}
+
+	/**
+	 * This function activates random generator for test use.
+	 * It does generate predictive pseudorandom data.
+	 */
+	EAP_FUNC_IMPORT void use_test_random(
+		const u8_t * const seed,
+		const u32_t seed_length,
+		const bool does_continuous_seeding_when_true);
+
+	/**
+	 * The get_rand_bytes() function fills count random bytes to buffer.
+	 */
+	EAP_FUNC_IMPORT eap_status_e get_rand_bytes(
+		u8_t * const buffer,
+		const u32_t count);
+
+	/**
+	 * The add_rand_seed() function seeds count bytes from buffer to the
+	 * random data pool. The seed bytes could be any data that increases
+	 * entropy of the random data pool. For example time stamps of send
+	 * and received messages, likewise addresses, cookies and nonces
+	 * included in messages.
+	 */
+	EAP_FUNC_IMPORT eap_status_e add_rand_seed(
+		const u8_t * const buffer,
+		const u32_t count);
+
+	/**
+	 * The add_rand_seed_hw_ticks() function adds hardware ticks read with 
+	 * the abs_eap_am_tools::get_hardware_ticks()  function. This could be
+	 * used to seed the random data pool with time stamps.
+	 */
+	EAP_FUNC_IMPORT eap_status_e add_rand_seed_hw_ticks();
+
+	// - - - - - - - - - - - - - - - - - - - - - - - -
+
+	/**
+	 * The generate_diffie_hellman_keys() function generates private and
+	 * public Diffie-Hellman keys. 
+	 * @param dh_context Saves context here. It is private key in OpenSSL
+	 * and CDHKey in Symbian.
+	 */
+	EAP_FUNC_IMPORT eap_status_e generate_diffie_hellman_keys(
+		eap_variable_data_c * const dh_context,
+		eap_variable_data_c * const own_public_dh_key,
+		const u8_t * const prime,
+		const u32_t prime_length,
+		const u8_t * const group_generator,
+		const u32_t group_generator_length);
+
+	/**
+	 * The generate_g_power_to_xy() function generates shared secret 
+	 * Diffie-Hellman key from own_private_dh_key and peer_public_dh_key.
+	 * @param dh_context Gets context. Is private key in OpenSSL and
+	 * CDHKey in Symbian.
+	 */
+	EAP_FUNC_IMPORT eap_status_e generate_g_power_to_xy(
+		const eap_variable_data_c * const dh_context,
+		const eap_variable_data_c * const peer_public_dh_key,
+		eap_variable_data_c * const shared_dh_key,
+		const u8_t * const prime,
+		const u32_t prime_length,
+		const u8_t * const group_generator,
+		const u32_t group_generator_length);
+
+	/**
+	 * This functions cleans up the diffie-hellman context.
+	 */
+	
+	EAP_FUNC_IMPORT eap_status_e dh_cleanup(
+		const eap_variable_data_c * const dh_context);
+
+	// - - - - - - - - - - - - - - - - - - - - - - - -
+
+	/**
+	 * This function returns the size of message digest of SHA1-algorithm.
+	 */
+	 EAP_FUNC_IMPORT u32_t get_sha_256_digest_length(
+		eap_variable_data_c * const sha_256_context);
+
+	/**
+	 * This function returns the block size of SHA1-algorithm.
+	 */
+	 EAP_FUNC_IMPORT u32_t get_sha_256_block_size(
+		eap_variable_data_c * const sha_256_context);
+
+	/**
+	 * The sha_256_init() function initializes SHA1.
+	 * Internal context of SHA1 is stored to sha_256_context.
+	 */
+	 EAP_FUNC_IMPORT eap_status_e sha_256_init(
+		eap_variable_data_c * const sha_256_context);
+
+	/**
+	 * The sha_256_update() function updates the context of 
+	 * sha_256_context with data_length bytes of data.
+	 */
+	 EAP_FUNC_IMPORT eap_status_e sha_256_update(
+		eap_variable_data_c * const sha_256_context,
+		const u8_t * const data,
+		const u32_t data_length);
+
+	/**
+	 * The sha_256_final() function writes the message authentication code 
+	 * (MAC) to buffer pointed by message_digest. The length of MAC is stored 
+	 * to buffer pointed by md_length_or_null, If md_length_or_null is non NULL.
+	 */
+	 EAP_FUNC_IMPORT eap_status_e sha_256_final(
+		eap_variable_data_c * const sha_256_context,
+		u8_t * const message_digest,
+		u32_t *md_length_or_null);
+
+	/**
+	 * The hmac_sha_256_cleanup() cleanups the SHA1 context.
+	 */
+	 EAP_FUNC_IMPORT eap_status_e sha_256_cleanup(
+		eap_variable_data_c * const sha_256_context);
+
+	/**
+	 * The sha_256_copy_context() copies the SHA1 context.
+	 */
+	 EAP_FUNC_IMPORT eap_status_e sha_256_copy_context(
+		eap_variable_data_c * const copied_sha_256_context,
+		const eap_variable_data_c * const original_sha_256_context);
+
+	// - - - - - - - - - - - - - - - - - - - - - - - -
+
+	/**
+	 * This function returns the size of message digest of SHA1-algorithm.
+	 */
+	EAP_FUNC_IMPORT u32_t get_sha1_digest_length(
+		eap_variable_data_c * const sha1_context);
+
+	/**
+	 * This function returns the block size of SHA1-algorithm.
+	 */
+	EAP_FUNC_IMPORT u32_t get_sha1_block_size(
+		eap_variable_data_c * const sha1_context);
+
+	/**
+	 * The sha1_init() function initializes SHA1.
+	 * Internal context of SHA1 is stored to sha1_context.
+	 */
+	EAP_FUNC_IMPORT eap_status_e sha1_init(
+		eap_variable_data_c * const sha1_context);
+
+	/**
+	 * The sha1_update() function updates the context of 
+	 * sha1_context with data_length bytes of data.
+	 */
+	EAP_FUNC_IMPORT eap_status_e sha1_update(
+		eap_variable_data_c * const sha1_context,
+		const u8_t * const data,
+		const u32_t data_length);
+
+	/**
+	 * The sha1_final() function writes the message authentication code 
+	 * (MAC) to buffer pointed by message_digest. The length of MAC is stored 
+	 * to buffer pointed by md_length_or_null, If md_length_or_null is non
+	 * NULL.
+	 */
+	EAP_FUNC_IMPORT eap_status_e sha1_final(
+		eap_variable_data_c * const sha1_context,
+		u8_t * const message_digest,
+		u32_t *md_length_or_null);
+
+	/**
+	 * The hmac_sha1_cleanup() cleanups the SHA1 context.
+	 */
+	EAP_FUNC_IMPORT eap_status_e sha1_cleanup(
+		eap_variable_data_c * const sha1_context);
+
+	/**
+	 * The sha1_copy_context() copies the SHA1 context.
+	 */
+	EAP_FUNC_IMPORT eap_status_e sha1_copy_context(
+		eap_variable_data_c * const copied_sha1_context,
+		const eap_variable_data_c * const original_sha1_context);
+
+	// - - - - - - - - - - - - - - - - - - - - - - - -
+
+	/**
+	 * The aes_key_length() function returns the length of key AES-algorithm. 
+	 * This will be constant 16 bytes (128 bits). Still it is better use
+	 * function to help changes if the length of key is changed in future. 
+	 */
+	EAP_FUNC_IMPORT u32_t aes_key_length();
+
+	/**
+	 * The aes_block_size() function returns the block size of AES-algorithm. 
+	 * This will be constant 16 bytes (128 bits). Still it is better use
+	 * function to help changes if the size is changed in future.
+	 */
+	EAP_FUNC_IMPORT u32_t aes_block_size();
+
+
+	/**
+	 * The aes_set_encryption_key() function initializes the encryption 
+	 * context of AES-algorithm to the aes_context using key_length bytes
+	 * from buffer key. 
+	 */
+	EAP_FUNC_IMPORT eap_status_e aes_set_encryption_key(
+		eap_variable_data_c * const aes_context,
+		const u8_t * const key,
+		const u32_t key_length);
+
+	/**
+	 * The aes_set_decryption_key() function initializes the decryption
+	 * context of 
+	 * AES-algorithm to the aes_context using key_length bytes from buffer key.
+	 */
+	EAP_FUNC_IMPORT eap_status_e aes_set_decryption_key(
+		eap_variable_data_c * const aes_context,
+		const u8_t * const key,
+		const u32_t key_length);
+
+	EAP_FUNC_IMPORT eap_status_e aes_cleanup(
+		eap_variable_data_c * const aes_context);
+
+	/**
+	 * The aes_encrypt_block() function encrypts data of data_length bytes 
+	 * using encryption_IV initialization vector. NOTE the length of data must 
+	 * be aligned to block size of AES-algorithm.
+	 * This version takes pointers to input and output buffers as a parameter.
+	 * Those buffers must be fully separated. Some optimizations are used
+	 * taking advance from separate buffers. 
+	 */
+	EAP_FUNC_IMPORT eap_status_e aes_encrypt_block(
+		eap_variable_data_c * const aes_context,
+		const u8_t * const data_in,
+		u8_t * const data_out,
+		const u32_t data_length);
+
+	/**
+	 * The aes_decrypt_block() function decrypts data of data_length bytes 
+	 * using decryption_IV initialization vector. NOTE the length of data must 
+	 * be aligned to block size of AES-algorithm.
+	 * This version takes pointers to input and output buffers as a parameter.
+	 * Those buffers must be fully separated. Some optimizations are used 
+	 * taking advance from separate buffers.
+	 */
+	EAP_FUNC_IMPORT eap_status_e aes_decrypt_block(
+		eap_variable_data_c * const aes_context,
+		const u8_t * const data_in,
+		u8_t * const data_out,
+		const u32_t data_length);
+
+	// - - - - - - - - - - - - - - - - - - - - - - - -
+
+	/**
+	 * The key_length() function returns the length of key 3DES-EDE-algorithm. 
+	 * This will be constant 16 bytes (128 bits). Still it is better use
+	 * function to help changes if the length of key is changed in future. 
+	 */
+	EAP_FUNC_IMPORT u32_t key_length_3des_ede();
+
+	/**
+	 * The block_size() function returns the block size of 3DES-EDE-algorithm. 
+	 * This will be constant 16 bytes (128 bits). Still it is better use
+	 * function to help changes if the size is changed in future.
+	 */
+	EAP_FUNC_IMPORT u32_t block_size_3des_ede();
+
+
+	/**
+	 * The cbc_set_encryption_key() function initializes the encryption 
+	 * context of 3DES-EDE-algorithm to the context using key_length bytes
+	 * from buffer key. 
+	 */
+	EAP_FUNC_IMPORT eap_status_e set_encryption_key_3des_ede(
+		eap_variable_data_c * const context,
+		const u8_t * const key,
+		const u32_t key_length);
+
+	/**
+	 * The cbc_set_decryption_key() function initializes the decryption
+	 * context of 3DES-EDE-algorithm to the context using key_length bytes
+	 * from buffer key.
+	 */
+	EAP_FUNC_IMPORT eap_status_e set_decryption_key_3des_ede(
+		eap_variable_data_c * const context,
+		const u8_t * const key,
+		const u32_t key_length);
+
+	EAP_FUNC_IMPORT eap_status_e cleanup_3des_ede(
+		eap_variable_data_c * const context);
+
+	/**
+	 * The cbc_encrypt_data() function encrypts data of data_length bytes 
+	 * using encryption_IV initialization vector. NOTE the length of data must 
+	 * be aligned to block size of 3DES-EDE-algorithm.
+	 * This version takes pointers to input and output buffers as a parameter.
+	 * Those buffers must be fully separated. Some optimizations are used
+	 * taking advance from separate buffers. 
+	 */
+	EAP_FUNC_IMPORT eap_status_e encrypt_block_3des_ede(
+		eap_variable_data_c * const context,
+		const u8_t * const data_in,
+		u8_t * const data_out,
+		const u32_t data_length);
+
+	/**
+	 * The cbc_decrypt_data() function decrypts data of data_length bytes 
+	 * using decryption_IV initialization vector. NOTE the length of data must 
+	 * be aligned to block size of 3DES-EDE-algorithm.
+	 * This version takes pointers to input and output buffers as a parameter.
+	 * Those buffers must be fully separated. Some optimizations are used 
+	 * taking advance from separate buffers.
+	 */
+	EAP_FUNC_IMPORT eap_status_e decrypt_block_3des_ede(
+		eap_variable_data_c * const context,
+		const u8_t * const data_in,
+		u8_t * const data_out,
+		const u32_t data_length);
+
+	// - - - - - - - - - - - - - - - - - - - - - - - -
+
+	/**
+	 * Key derivation is based on the random number generation specified in
+	 * NIST Federal Information Processing Standards (FIPS) Publication
+	 * 186-2 [9]. The random number generator is specified in the change
+	 * notice 1 (2001 October 5) of [9] (Algorithm 1). As specified in the
+	 * change notice (page 74), when Algorithm 1 is used as a general-
+	 * purpose random number generator, the "mod q" term in step 3.3 is
+	 * omitted. The function G used in the algorithm is constructed via
+	 * Secure Hash Standard as specified in Appendix 3.3 of the standard.
+	 
+	 * 160-bit XKEY and XVAL values are used, so b = 160. The initial
+	 * secret seed value XKEY is computed from the n GSM Kc keys and the
+	 * NONCE_MT with the following formula:
+	 * @code
+	 * XKEY = SHA1(n*Kc| NONCE_MT)
+	 * 
+	 * Random generator becomes as follows:
+	 * Step 1. Choose a new, secret value for the seed-key, XKEY.
+	 * Step 2. In hexadecimal notation let
+	 *         t = 67452301 EFCDAB89 98BADCFE 10325476 C3D2E1F0.
+	 *         This is the initial value for H0 || H1 || H2 || H3 || H4
+	 *         in the SHS.
+	 * Step 3. For j = 0 to m - 1 do
+	 *             c. xj = G(t,XKEY).
+	 *             d. XKEY = (1 + XKEY + xj) mod 2^b.
+	 * @endcode
+	 */
+	EAP_FUNC_IMPORT eap_status_e dss_pseudo_random(
+		u8_t *out,
+		u32_t out_length,
+		u8_t *xkey,
+		u32_t xkey_length);
+
+	// - - - - - - - - - - - - - - - - - - - - - - - -
+
+	/**
+	 * This function returns the size of message digest of MD5-algorithm.
+	 */
+	EAP_FUNC_IMPORT u32_t get_md5_digest_length(
+		eap_variable_data_c * const md5_context);
+
+	/**
+	 * This function returns the block size of MD5-algorithm.
+	 */
+	EAP_FUNC_IMPORT u32_t get_md5_block_size(
+		eap_variable_data_c * const md5_context);
+
+	/**
+	 * The sha1_init() function initializes MD5.
+	 * Internal context of MD5 is stored to sha1_context.
+	 */
+	EAP_FUNC_IMPORT eap_status_e md5_init(
+		eap_variable_data_c * const md5_context);
+
+	/**
+	 * The md5_update() function updates the context of 
+	 * md5_context with data_length bytes of data.
+	 */
+	EAP_FUNC_IMPORT eap_status_e md5_update(
+		eap_variable_data_c * const md5_context,
+		const u8_t * const data,
+		const u32_t data_length);
+
+	/**
+	 * The md5_final() function writes the message authentication code 
+	 * (MAC) to buffer pointed by message_digest. The length of MAC is stored 
+	 * to buffer pointed by md_length_or_null, If md_length_or_null is non
+	 * NULL.
+	 */
+	EAP_FUNC_IMPORT eap_status_e md5_final(
+		eap_variable_data_c * const md5_context,
+		u8_t * const message_digest,
+		u32_t *md_length_or_null);
+
+	/**
+	 * The hmac_md5_cleanup() cleanups the MD5 context.
+	 */
+	EAP_FUNC_IMPORT eap_status_e md5_cleanup(
+		eap_variable_data_c * const md5_context);
+
+	/**
+	 * The md5_copy_context() copies the MD5 context.
+	 */
+	 EAP_FUNC_IMPORT eap_status_e md5_copy_context(
+		eap_variable_data_c * const copied_md5_context,
+		const eap_variable_data_c * const original_md5_context);
+
+	// - - - - - - - - - - - - - - - - - - - - - - - -
+
+	/**
+	 * This function returns the size of message digest of MD4-algorithm.
+	 */
+	EAP_FUNC_IMPORT u32_t get_md4_digest_length(
+		eap_variable_data_c * const md4_context);
+
+	/**
+	 * This function returns the block size of MD4-algorithm.
+	 */
+	EAP_FUNC_IMPORT u32_t get_md4_block_size(
+		eap_variable_data_c * const md4_context);
+
+	/**
+	 * The sha1_init() function initializes MD4.
+	 * Internal context of MD4 is stored to sha1_context.
+	 */
+	EAP_FUNC_IMPORT eap_status_e md4_init(
+		eap_variable_data_c * const md4_context);
+
+	/**
+	 * The md4_update() function updates the context of 
+	 * md5_context with data_length bytes of data.
+	 */
+	EAP_FUNC_IMPORT eap_status_e md4_update(
+		eap_variable_data_c * const md4_context,
+		const u8_t * const data,
+		const u32_t data_length);
+
+	/**
+	 * The md4_final() function writes the message authentication code 
+	 * (MAC) to buffer pointed by message_digest. The length of MAC is stored 
+	 * to buffer pointed by md_length_or_null, If md_length_or_null is non
+	 * NULL.
+	 */
+	EAP_FUNC_IMPORT eap_status_e md4_final(
+		eap_variable_data_c * const md4_context,
+		u8_t * const message_digest,
+		u32_t *md_length_or_null);
+
+	/**
+	 * The hmac_md5_cleanup() cleanups the MD4 context.
+	 */
+	EAP_FUNC_IMPORT eap_status_e md4_cleanup(
+		eap_variable_data_c * const md4_context);
+
+	/**
+	 * The md4_copy_context() copies the MD4 context.
+	 */
+	 EAP_FUNC_IMPORT eap_status_e md4_copy_context(
+		eap_variable_data_c * const copied_md4_context,
+		const eap_variable_data_c * const original_md4_context);
+
+	// - - - - - - - - - - - - - - - - - - - - - - - -
+
+	/**
+	* Used to set the RC4 key.
+	*/
+	EAP_FUNC_IMPORT eap_status_e rc4_set_key(
+		eap_variable_data_c * const rc4_context, 
+		const eap_variable_data_c * const key);
+
+	/**
+	* Used to clean up the RC4 context.
+	*/
+	EAP_FUNC_IMPORT eap_status_e rc4_cleanup(
+		eap_variable_data_c * const rc4_context);
+
+	/**
+	* Encrypts RC4 data.
+	*/
+	EAP_FUNC_IMPORT eap_status_e rc4_encrypt(
+		const eap_variable_data_c * const rc4_context, 
+		void * const data_in_out,
+		const u32_t data_length);
+
+	/**
+	* Encrypts RC4 data.
+	*/
+	EAP_FUNC_IMPORT eap_status_e rc4_encrypt(
+		const eap_variable_data_c * const rc4_context, 
+		const void * const data_in, 
+		void * const data_out,
+		const u32_t data_length);
+
+	/**
+	* Decrypts RC4 data.
+	*/
+	EAP_FUNC_IMPORT eap_status_e rc4_decrypt(
+		const eap_variable_data_c * const rc4_context, 
+		void * const data_in_out,
+		const u32_t data_length);
+
+	/**
+	* Decrypts RC4 data.
+	*/
+	EAP_FUNC_IMPORT eap_status_e rc4_decrypt(
+		const eap_variable_data_c * const rc4_context, 
+		const void * const data_in, 
+		void * const data_out,
+		const u32_t data_length);
+	
+	// - - - - - - - - - - - - - - - - - - - - - - - -
+
+	/**
+	 * The rsa_init() function initializes context of RSA.
+	 * Internal context of RSA is stored to rsa_context.
+	 */
+	EAP_FUNC_IMPORT eap_status_e rsa_init(
+		eap_variable_data_c * const rsa_context);
+
+	EAP_FUNC_IMPORT eap_status_e rsa_encrypt_with_public_key(
+		eap_variable_data_c * const rsa_context,
+		const eap_variable_data_c * const public_rsa_key,
+		const eap_variable_data_c * const input_data,
+		eap_variable_data_c * const output_data);
+
+	EAP_FUNC_IMPORT eap_status_e rsa_decrypt_with_public_key(
+		eap_variable_data_c * const rsa_context,
+		const eap_variable_data_c * const public_rsa_key,
+		const eap_variable_data_c * const input_data,
+		eap_variable_data_c * const output_data);
+
+	EAP_FUNC_IMPORT eap_status_e rsa_encrypt_with_private_key(
+		eap_variable_data_c * const rsa_context,
+		const eap_variable_data_c * const private_rsa_key,
+		const eap_variable_data_c * const input_data,
+		eap_variable_data_c * const output_data);
+
+	EAP_FUNC_IMPORT eap_status_e rsa_decrypt_with_private_key(
+		eap_variable_data_c * const rsa_context,
+		const eap_variable_data_c * const private_rsa_key,
+		const eap_variable_data_c * const input_data,
+		eap_variable_data_c * const output_data);
+
+	EAP_FUNC_IMPORT eap_status_e rsa_sign(
+		eap_variable_data_c * const rsa_context,
+		const eap_variable_data_c * const private_rsa_key,
+		const eap_variable_data_c * const hash,
+		eap_variable_data_c * const signed_hash);
+
+	EAP_FUNC_IMPORT eap_status_e rsa_verify(
+		eap_variable_data_c * const rsa_context,
+		const eap_variable_data_c * const public_rsa_key,
+		const eap_variable_data_c * const hash,
+		const eap_variable_data_c * const signed_hash);
+
+	/**
+	 * The rsa_cleanup() function cleans up context of RSA.
+	 * Internal context of RSA is stored to rsa_context.
+	 */
+	EAP_FUNC_IMPORT eap_status_e rsa_cleanup(
+		eap_variable_data_c * const rsa_context);
+
+	// - - - - - - - - - - - - - - - - - - - - - - - -
+
+	/**
+	 * The dsa_init() function initializes context of DSA.
+	 * Internal context of DSA is stored to dsa_context.
+	 */
+	EAP_FUNC_IMPORT eap_status_e dsa_init(
+		eap_variable_data_c * const dsa_context);
+
+	EAP_FUNC_IMPORT eap_status_e dsa_sign(
+		eap_variable_data_c * const dsa_context,
+		const eap_variable_data_c * const private_dsa_key,
+		const eap_variable_data_c * const hash,
+		eap_variable_data_c * const signed_hash);
+
+	EAP_FUNC_IMPORT eap_status_e dsa_verify(
+		eap_variable_data_c * const dsa_context,		
+		const eap_variable_data_c * const public_dsa_key,
+		const eap_variable_data_c * const dsa_param_p,
+		const eap_variable_data_c * const dsa_param_q,
+		const eap_variable_data_c * const dsa_param_g,
+		const eap_variable_data_c * const hash,
+		const eap_variable_data_c * const signed_hash);
+
+	/**
+	 * The dsa_cleanup() function cleans up context of DSA.
+	 * Internal context of DSA is stored to dsa_context.
+	 */
+	EAP_FUNC_IMPORT eap_status_e dsa_cleanup(
+		eap_variable_data_c * const dsa_context);
+
+	// - - - - - - - - - - - - - - - - - - - - - - - -
+
+	EAP_FUNC_IMPORT void open_crypto_memory_leaks();
+	EAP_FUNC_IMPORT void close_crypto_memory_leaks();
+};
+
+#endif //#if !defined( _EAP_AM_CRYPTO_OPENSSL_H_ )
+
+
+
+// End.