db_crypt.h

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#ifndef __CWIST_DB_CRYPT_H__
#define __CWIST_DB_CRYPT_H__
 
#include <stddef.h>
#include <stdint.h>
 
#define CWIST_DB_CRYPT_OK 0
#define CWIST_DB_CRYPT_ERR_ARGS (-1)
#define CWIST_DB_CRYPT_ERR_CRYPTO (-2)
#define CWIST_DB_CRYPT_ERR_FORMAT (-3)
#define CWIST_DB_CRYPT_ERR_MEM (-4)
 
#define CWIST_DB_CRYPT_KEY_LEN 32   
#define CWIST_DB_CRYPT_IV_LEN 16   
#define CWIST_DB_CRYPT_HDR_LEN 109
 
typedef struct cwist_db_crypt_ctx_t {
    unsigned char kek[CWIST_DB_CRYPT_KEY_LEN]; 
} cwist_db_crypt_ctx_t;
 
unsigned char *cwist_db_crypt_seal(const cwist_db_crypt_ctx_t *ctx,
                                   const unsigned char *sqlite_bytes, size_t sqlite_len,
                                   size_t *out_len);
 
unsigned char *cwist_db_crypt_open(const cwist_db_crypt_ctx_t *ctx, const unsigned char *blob,
                                   size_t blob_len, size_t *out_len);
 
#endif /* __CWIST_DB_CRYPT_H__ */