/* renesas-tsip-crypt.h
 *
 * Copyright (C) 2006-2021 wolfSSL Inc.
 *
 * This file is part of wolfSSL.
 *
 * wolfSSL is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * wolfSSL is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
 */
#ifndef __RENESAS_TSIP_CRYPT_H__
#define __RENESAS_TSIP_CRYPT_H__

#if defined(WOLFSSL_RENESAS_TSIP_IAREWRX)
    #include "r_bsp/mcu/all/r_rx_compiler.h"
    #include "r_bsp/platform.h"
#else
    #include "platform.h"
#endif

#include "r_tsip_rx_if.h"
#include <libwolfssl/wolfcrypt/logging.h>

#ifdef __cplusplus
extern "C" {
#endif

#define TSIP_SESSIONKEY_NONCE_SIZE      8

typedef enum {
    WOLFSSL_TSIP_NOERROR = 0,
    WOLFSSL_TSIP_ILLEGAL_CIPHERSUITE = 0xffffffff,
}wolfssl_tsip_error_number;

typedef enum {
    tsip_Key_SESSION = 1,
    tsip_Key_AES128  = 2,
    tsip_Key_AES256  = 3,
    tsip_Key_RSA1024 = 4,
    tsip_Key_RSA2048 = 5,
    tsip_Key_tls_Rsa2048 = 6,
    tsip_Key_unknown = -1,
} wolfssl_TSIP_KEY_IV;

enum {
    l_TLS_RSA_WITH_AES_128_CBC_SHA     = 0x2F,
    l_TLS_RSA_WITH_AES_128_CBC_SHA256  = 0x3c,
    l_TLS_RSA_WITH_AES_256_CBC_SHA     = 0x35,
    l_TLS_RSA_WITH_AES_256_CBC_SHA256  = 0x3d,
};

#if defined(WOLFSSL_RENESAS_TSIP_TLS) && (WOLFSSL_RENESAS_TSIP_VER >=109) 

typedef struct
{
    uint8_t                          *encrypted_provisioning_key;
    uint8_t                          *iv;
    uint8_t                          *encrypted_user_tls_key;
    uint32_t                          encrypted_user_tls_key_type;
    tsip_tls_ca_certification_public_key_index_t  user_rsa2048_tls_pubindex;
} tsip_key_data;

void tsip_inform_user_keys_ex(
        byte*       provisioning_key,   /* key got from DLM server */
        byte*       iv,                 /* iv used for public key  */
        byte*       encrypted_public_key,/*RSA2048 or ECDSAp256 public key*/
        word32      public_key_type);   /* 0: RSA-2048 2:ECDSA P-256 */    

int tsip_generateMasterSecretEx(
        byte        cipherSuiteFirst,
        byte        cipherSuite,
        const byte* pr,                 /* pre-master    */
        const byte* cr,                 /* client random */
        const byte* sr,                 /* server random */
        byte*       ms);


#elif defined(WOLFSSL_RENESAS_TSIP_TLS) && (WOLFSSL_RENESAS_TSIP_VER >=106)

typedef struct
{
    uint8_t                          *encrypted_session_key;
    uint8_t                          *iv;
    uint8_t                          *encrypted_user_tls_key;
    tsip_tls_ca_certification_public_key_index_t  user_rsa2048_tls_pubindex;
} tsip_key_data;

void tsip_inform_user_keys(byte *encrypted_session_key, byte *iv,
                           byte *encrypted_user_tls_key);
int tsip_generateMasterSecret(const byte *pre, const byte *cr,const byte *sr,
                              byte *ms);
#endif

struct WOLFSSL;

int     tsip_Open();

void    tsip_Close();

int     tsip_hw_lock();

void    tsip_hw_unlock( void );

int     tsip_usable(const struct WOLFSSL *ssl);

void    tsip_inform_sflash_signedcacert(
            const byte* ps_flash, 
            const byte* psigned_ca_cert,
            word32      len);
void    tsip_inform_cert_sign(const byte *sign);                           

byte    tsip_rootCAverified();

byte    tsip_checkCA(word32 cmIdx);

int     tsip_tls_RootCertVerify(
            const   byte* cert,         word32 cert_len,
            word32  key_n_start,        word32 key_n_len,
            word32  key_e_start,        word32 key_e_len,
            word32  cm_row);

int     tsip_tls_CertVerify(
            const   byte* cert,         word32 certSz,
            const   byte* signature,    word32 sigSz,
            word32  key_n_start,        word32 key_n_len,
            word32  key_e_start,        word32 key_e_len,
            byte*   tsip_encRsaKeyIdx);

void    tsip_inform_key_position(
            const word32 key_n_start,
            const word32 key_n_len,
            const word32 key_e_start,
            const word32 key_e_len);

int     tsip_generatePremasterSecret(
            byte*   premaster,
            word32  preSz);

int     tsip_generateEncryptPreMasterSecret(
            struct WOLFSSL* ssl, 
            byte*           out, 
            word32*         outSz);

int     tsip_generateSeesionKey(struct WOLFSSL *ssl);

int     tsip_Sha256Hmac(
            const struct WOLFSSL *ssl,
            const byte* myInner, 
            word32      innerSz,
            const byte* in,
            word32      sz,
            byte*       digest, 
            word32      verify);

int     tsip_Sha1Hmac(
            const struct WOLFSSL *ssl,
            const byte* myInner, 
            word32      innerSz,
            const byte* in,
            word32      sz, 
            byte*       digest, 
            word32      verify);
            
#if (!defined(NO_SHA) || !defined(NO_SHA256)) && \
    !defined(NO_WOLFSSL_RENESAS_TSIP_CRYPT_HASH)

typedef enum {
    TSIP_SHA1 = 0,
    TSIP_SHA256 = 1,
} TSIP_SHA_TYPE;

typedef struct {
    byte*  msg;
    void*  heap;
    word32 used;
    word32 len;
    word32 sha_type;
} wolfssl_TSIP_Hash;

/* RAW hash function APIs are not implemented with TSIP */
#define WOLFSSL_NO_HASH_RAW

typedef wolfssl_TSIP_Hash wc_Sha;

#if !defined(NO_SHA256)
    typedef wolfssl_TSIP_Hash wc_Sha256;
#endif

#endif /* NO_SHA */

#if defined(WOLFSSL_RENESAS_TSIP_TLS_AES_CRYPT)
    typedef struct {
        tsip_aes_key_index_t tsip_keyIdx;
        word32               keySize;
    } TSIP_AES_CTX;
    
    struct Aes;
    int wc_tsip_AesCbcEncrypt(struct Aes* aes, byte* out, const byte* in,
                              word32 sz);
    int wc_tsip_AesCbcDecrypt(struct Aes* aes, byte* out, const byte* in,
                              word32 sz);
    
#endif /* WOLFSSL_RENESAS_TSIP_TLS_AES */

#if defined(WOLFSSL_RENESAS_TSIP_CRYPT_DEBUG)
byte *ret2err(word32 ret);

#endif

#ifdef __cplusplus
}
#endif

#endif  /* __RENESAS_TSIP_CRYPT_H__ */
