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- #ifndef CHALLENGE_H
- #define CHALLENGE_H 1
- #include <stdint.h>
- /** challenge_t: This structure contains the pseudo-random challenge used for
- * authentication.
- */
- typedef struct challenge_t {
- /** tv_sec as returned by gettimeofday */
- uint32_t sec;
- /** tv_usec as returned by gettimeofday + random value */
- uint32_t usec_rnd;
- /** random values */
- uint32_t random[6];
- } __attribute__ ((packed)) challenge_t;
- challenge_t* generate_challenge(void);
- void generate_response(challenge_t *challenge);
- int validate_challenge(challenge_t *local, challenge_t *remote);
- #endif
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