-/**
- * \brief sets up round keys (context) for cast5 en/decryption.
- * @param s Pointer to cast5 context.
- * @param key Pointer to binary key.
- * @param keylength length of keydata in bits.
- */
-void cast5_init(uint8_t* key, uint8_t keylength_b, cast5_ctx_t* s){
+
+void cast5_init(void* key, uint8_t keylength_b, cast5_ctx_t* s){
/* we migth return if the key is valid and if setup was sucessfull */
uint32_t x[4], z[4];
#define BPX ((uint8_t*)&(x[0]))
/*************************************************************************/
-/**
- * \brief encrypts a datablock with cast5
- * @param block Pointer to datablock
- * @param s Pointer to cast5 roundkeys (context)
- */
-void cast5_enc(void* block, cast5_ctx_t *s){
+void cast5_enc(void* block, const cast5_ctx_t *s){
uint32_t l,r, x, y;
uint8_t i;
cast5_f_t* f[]={cast5_f1,cast5_f2,cast5_f3};
/*************************************************************************/
-/**
- * \brief decrypts a datablock with cast5
- * @param block Pointer to datablock
- * @param s Pointer to cast5 roundkeys (context)
- */
-void cast5_dec(void* block, cast5_ctx_t *s){
+void cast5_dec(void* block, const cast5_ctx_t *s){
uint32_t l,r, x, y;
int8_t i, rounds;
cast5_f_t* f[]={cast5_f1,cast5_f2,cast5_f3};