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FIX: 'lf hitag' - init of TC0 missing (@piwi)

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CHG: 'lf hitag' - factoring code (@iceman)
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iceman1001 2019-03-13 10:16:12 +01:00
commit c01497b8af
4 changed files with 283 additions and 250 deletions
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36
armsrc/hitag2_crypto.h Normal file
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@ -0,0 +1,36 @@
#ifndef __HITAG2_CRYPTO_H
#define __HITAG2_CRYPTO_H
#ifdef __cplusplus
extern "C" {
#endif
#include "string.h"
#include "util.h"
struct hitag2_tag {
uint32_t uid;
enum {
TAG_STATE_RESET = 0x01, // Just powered up, awaiting GetSnr
TAG_STATE_ACTIVATING = 0x02, // In activation phase (password mode), sent UID, awaiting reader password
TAG_STATE_ACTIVATED = 0x03, // Activation complete, awaiting read/write commands
TAG_STATE_WRITING = 0x04, // In write command, awaiting sector contents to be written
} state;
uint16_t active_sector;
uint8_t crypto_active;
uint64_t cs;
uint8_t sectors[12][4];
};
extern uint32_t _f20(const uint64_t x);
extern uint64_t _hitag2_init(const uint64_t key, const uint32_t serial, const uint32_t IV);
extern uint64_t _hitag2_round(uint64_t *state);
extern uint32_t _hitag2_byte(uint64_t *x);
extern void hitag2_cipher_reset(struct hitag2_tag *tag, const uint8_t *iv);
extern int hitag2_cipher_authenticate(uint64_t *cs, const uint8_t *authenticator_is);
extern int hitag2_cipher_transcrypt(uint64_t *cs, uint8_t *data, uint16_t bytes, uint16_t bits) ;
#ifdef __cplusplus
}
#endif
#endif