radare2/libr/include/r_util/r_des.h

#ifndef R_DES_H
#define R_DES_H

#define DES_KEY_SIZE 8
#define BLOCK_SIZE 8

typedef struct des_context_t {
    ut32 round_key_lo[16]; // round key low
    ut32 round_key_hi[16]; // round key hi
    int round;
} RDESContext;

R_API void r_des_permute_key (ut32 *keylo, ut32 *keyhi);
R_API void r_des_permute_block0  (ut32 *blocklo, ut32 *blockhi);
R_API void r_des_permute_block1 (ut32 *blocklo, ut32 *blockhi);
R_API void r_des_round_key (int i, ut32 *keylo, ut32 *keyhi, ut32 *deskeylo, ut32 *deskeyhi);
R_API void r_des_round (ut32 *buflo, ut32 *bufhi, ut32 *roundkeylo, ut32 *roundkeyhi);


#endif //  R_DES_H