crypt_modes_ccm.h

/*
 * This file is part of the openHiTLS project.
 *
 * openHiTLS is licensed under the Mulan PSL v2.
 * You can use this software according to the terms and conditions of the Mulan PSL v2.
 * You may obtain a copy of Mulan PSL v2 at:
 *
 *     http://license.coscl.org.cn/MulanPSL2
 *
 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
 * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
 * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
 * See the Mulan PSL v2 for more details.
 */
 
#ifndef CRYPT_MODES_CCM_H
#define CRYPT_MODES_CCM_H
 
#include "hitls_build.h"
#ifdef HITLS_CRYPTO_CCM
 
#include "crypt_types.h"
#include "crypt_modes.h"
 
#ifdef __cplusplus
extern "C" {
#endif // __cplusplus
 
#define CCM_BLOCKSIZE 16
 
typedef struct {
    void *ciphCtx;  /* Context defined by each algorithm  */
    const EAL_SymMethod *ciphMeth;  /* Corresponding to the related methods for each symmetric algorithm */
 
    uint8_t nonce[CCM_BLOCKSIZE];  /* Data nonce, ctr encrypted data */
    uint8_t tag[CCM_BLOCKSIZE];    /* Data tag, intermediate data encrypted by the CBC */
    uint8_t last[CCM_BLOCKSIZE];   /* Previous data block in ctr mode */
    uint64_t msgLen;    /* The message length */
    uint8_t lastLen;    /* Unused data length of the previous data block in ctr mode. */
    uint8_t tagLen;     /* The length of the tag is 16 by default. The tag is reset each time the key is set. */
    uint8_t tagInit;    /* Indicate whether the tag is initialized. */
} MODES_CipherCCMCtx;
 
struct ModesCcmCtx {
    int32_t algId;
    MODES_CipherCCMCtx ccmCtx;
    bool enc;
};
 
typedef struct ModesCcmCtx MODES_CCM_Ctx;
// CCM mode universal implementation
MODES_CCM_Ctx *MODES_CCM_NewCtx(int32_t algId);
MODES_CCM_Ctx *MODES_CCM_NewCtxEx(void *libCtx, int32_t algId);
 
int32_t MODES_CCM_InitCtx(MODES_CCM_Ctx *modeCtx, const uint8_t *key, uint32_t keyLen, const uint8_t *iv,
    uint32_t ivLen, void *param, bool enc);
 
int32_t MODES_CCM_Update(MODES_CCM_Ctx *modeCtx, const uint8_t *in, uint32_t inLen, uint8_t *out, uint32_t *outLen);
int32_t MODES_CCM_Final(MODES_CCM_Ctx *modeCtx, uint8_t *out, uint32_t *outLen);
int32_t MODES_CCM_DeInitCtx(MODES_CCM_Ctx *modeCtx);
int32_t MODES_CCM_Ctrl(MODES_CCM_Ctx *modeCtx, int32_t opt, void *val, uint32_t len);
void MODES_CCM_FreeCtx(MODES_CCM_Ctx *modeCtx);
 
// AES CCM optimization implementation
int32_t AES_CCM_Update(MODES_CCM_Ctx *modeCtx, const uint8_t *in, uint32_t inLen, uint8_t *out, uint32_t *outLen);
 
int32_t MODES_CCM_UpdateEx(MODES_CCM_Ctx *modeCtx, const uint8_t *in, uint32_t inLen, uint8_t *out, uint32_t *outLen);
MODES_CCM_Ctx *MODES_CCM_DupCtx(const MODES_CCM_Ctx *modeCtx);
 
#ifdef __cplusplus
}
#endif // __cplusplus
 
#endif // HITLS_CRYPTO_CCM
 
#endif // CRYPT_MODES_CCM_H