libchat6/inc/lc6_crypto.h

#ifndef LC6_SSL_H
#define LC6_SSL_H

#include <sodium.h>
#include "../inc/lc6_common.h"

int lc6crypto_init(void);

int lc6crypto_genrequestsessionkey(LC6_USER *user, LC6_FRIEND *friend);
int lc6crypto_genresponsesessionkey(LC6_USER *user, LC6_FRIEND *friend);

int lc6crypto_encrypt(
        const unsigned char *data,
        const int data_len,
        const unsigned char *skey,
        const unsigned char *dkey,
        unsigned char **enc_data,
        unsigned char **nonce);

int lc6crypto_decrypt(
        const unsigned char *enc_data,
        const int enc_len,
        const unsigned char *skey,
        const unsigned char *dkey,
        unsigned char **data,
        const unsigned char *nonce);

int lc6crypto_readfile(
        const char *file,
        const unsigned char *password,
        unsigned char **data,
        int *data_len);

int lc6crypto_writefile(
        const char *file,
        const unsigned char *password,
        const unsigned char *data,
        const int data_len);

LC6_USER* lc6crypto_genuserkey(LC6_USER*);
LC6_NODE* lc6crypto_gennodekey(LC6_NODE*);

unsigned char* lc6crypto_hash(unsigned char*, int);

void lc6crypto_random(unsigned char*, int);

#endif