176 lines
7.3 KiB
C
176 lines
7.3 KiB
C
/*-
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* Copyright (C) 2001-2003 by NBMK Encryption Technologies.
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* All rights reserved.
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*
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* NBMK Encryption Technologies provides no support of any kind for
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* this software. Questions or concerns about it may be addressed to
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* the members of the relevant open-source community at
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* <tech-crypto@netbsd.org>.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*****************************************************************************
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* @(#) n8_pub_symmetric.h 1.7@(#)
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*****************************************************************************/
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/*****************************************************************************/
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/** @file n8_pub_symmetric
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* @brief Common declarations for symmetric (encrypt/decrypt) operations.
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*
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* Public header file for encrypt/decrypt symmetric (private key) operations.
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*
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*****************************************************************************/
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/*****************************************************************************
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* Revision history:
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* 05/20/03 brr Move defines for message length to this public include.
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* 06/12/02 bac Corrected lengthof keyARC4 in N8_Key_t (Bug #768)
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* 11/28/01 mel Fixed bug #365 : ARC4 key type N8_RC4_t incorrectly declared
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* 11/12/01 hml Added structureID to N8_EncryptObject_t.
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* 10/12/01 dkm Original version. Adapted from n8_types.h.
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****************************************************************************/
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#ifndef N8_PUB_SYMMETRIC_H
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#define N8_PUB_SYMMETRIC_H
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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#include "n8_pub_common.h"
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/*****************************************************************************
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* #defines
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*****************************************************************************/
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#define N8_DES_BLOCK_LENGTH 8
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#define N8_ARC4_MAX_LENGTH 256
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#define N8_MAX_MESSAGE_LENGTH (18 * 1024)
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#define N8_MIN_MESSAGE_LENGTH 0
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/*****************************************************************************
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* Structures/type definitions
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*****************************************************************************/
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typedef struct
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{
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char IV[N8_DES_KEY_LENGTH];
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char key1[N8_DES_KEY_LENGTH];
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char key2[N8_DES_KEY_LENGTH];
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char key3[N8_DES_KEY_LENGTH];
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} N8_DES_t;
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/* cipher info */
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typedef union
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{
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N8_Buffer_t keyARC4[N8_ARC4_MAX_LENGTH]; /* specifies ARC4 key to use */
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N8_DES_t keyDES; /* specifies data to use with IPSec*/
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} N8_Key_t;
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typedef struct
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{
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uint32_t sequence_number[2];
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unsigned int keySize; /* keys size for verification */
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N8_Key_t key; /* specific protocol data */
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N8_Unit_t unitID; /* The unit number for ops using this */
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} N8_EncryptCipher_t;
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/* packet object */
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typedef struct
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{
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N8_Cipher_t cipher; /* cipher: ARC4, DES*/
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N8_ContextHandle_t contextHandle;
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N8_EncryptCipher_t cipherInfo; /* keys to use */
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N8_Buffer_t residual_p[N8_DES_BLOCK_LENGTH];
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unsigned int residualLength;
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N8_Unit_t unitID; /* The unit number for ops using this */
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unsigned int structureID;
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} N8_EncryptObject_t;
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/*****************************************************************************
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* Function prototypes
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*****************************************************************************/
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N8_Status_t N8_EncryptInitialize(N8_EncryptObject_t *encryptObject_p,
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const N8_ContextHandle_t *contextHandle_p,
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const N8_Cipher_t cipher,
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N8_EncryptCipher_t *cipherInfo_p,
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N8_Event_t *event_p);
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N8_Status_t N8_Encrypt(N8_EncryptObject_t *encryptObject_p,
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const N8_Buffer_t *message_p,
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const unsigned int messageLength,
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N8_Buffer_t *encryptedMessage_p,
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N8_Event_t *event_p );
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N8_Status_t N8_Encrypt_uio(N8_EncryptObject_t *encryptObject_p,
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struct uio *message_p,
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const unsigned int messageLength,
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struct uio *encryptedMessage_p,
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N8_Event_t *event_p );
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N8_Status_t N8_EncryptPartial(N8_EncryptObject_t *encryptObject_p,
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const N8_Buffer_t *message_p,
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const unsigned int messageLength,
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N8_Buffer_t *encryptedMessage_p,
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unsigned int *encryptedMsgLen_p,
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N8_Event_t *event_p);
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N8_Status_t N8_EncryptEnd(N8_EncryptObject_t *encryptObject_p,
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N8_Buffer_t *encryptedMessage_p,
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unsigned int *encryptedMessageLength,
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N8_Event_t *event_p );
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N8_Status_t N8_Decrypt(N8_EncryptObject_t *encryptObject_p,
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const N8_Buffer_t *encryptedMessage_p,
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const unsigned int encryptedMessageLength,
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N8_Buffer_t *message_p,
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N8_Event_t *event_p );
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N8_Status_t N8_Decrypt_uio(N8_EncryptObject_t *encryptObject_p,
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struct uio *encryptedMessage_p,
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const unsigned int encryptedMessageLength,
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struct uio *message_p,
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N8_Event_t *event_p );
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N8_Status_t N8_DecryptPartial(N8_EncryptObject_t *encryptObject_p,
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const N8_Buffer_t *encryptedMessage_p,
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const unsigned int encryptedMessageLength,
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N8_Buffer_t *message_p,
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unsigned int *messageLength,
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N8_Event_t *event_p );
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N8_Status_t N8_DecryptEnd(N8_EncryptObject_t *encryptObject_p,
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N8_Buffer_t *message_p,
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unsigned int *messageLength,
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N8_Event_t *event_p );
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#ifdef __cplusplus
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}
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#endif
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#endif
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