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https://github.com/RfidResearchGroup/proxmark3.git
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131 lines
4.5 KiB
C
131 lines
4.5 KiB
C
#ifndef __DESFIRE_CRYPTO_H
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#define __DESFIRE_CRYPTO_H
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#include "common.h"
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#include "mifare.h"
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#include "mbedtls/aes.h"
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#include "mbedtls/des.h"
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//#include "../../armsrc/printf.h"
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//#include "../../armsrc/desfire.h"
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//#include "../../armsrc/iso14443a.h"
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#define MAX_CRYPTO_BLOCK_SIZE 16
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/* Mifare DESFire EV1 Application crypto operations */
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#define APPLICATION_CRYPTO_DES 0x00
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#define APPLICATION_CRYPTO_3K3DES 0x40
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#define APPLICATION_CRYPTO_AES 0x80
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#define MAC_LENGTH 4
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#define CMAC_LENGTH 8
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typedef enum {
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MCD_SEND,
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MCD_RECEIVE
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} MifareCryptoDirection;
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typedef enum {
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MCO_ENCYPHER,
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MCO_DECYPHER
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} MifareCryptoOperation;
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#define MDCM_MASK 0x000F
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#define CMAC_NONE 0
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// Data send to the PICC is used to update the CMAC
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#define CMAC_COMMAND 0x010
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// Data received from the PICC is used to update the CMAC
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#define CMAC_VERIFY 0x020
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// MAC the command (when MDCM_MACED)
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#define MAC_COMMAND 0x100
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// The command returns a MAC to verify (when MDCM_MACED)
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#define MAC_VERIFY 0x200
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#define ENC_COMMAND 0x1000
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#define NO_CRC 0x2000
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#define MAC_MASK 0x0F0
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#define CMAC_MACK 0xF00
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/* Communication mode */
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#define MDCM_PLAIN 0x00
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#define MDCM_MACED 0x01
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#define MDCM_ENCIPHERED 0x03
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/* Error code managed by the library */
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#define CRYPTO_ERROR 0x01
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enum DESFIRE_CRYPTOALGO {
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T_DES = 0x00,
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T_3DES = 0x01, //aka 2K3DES
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T_3K3DES = 0x02,
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T_AES = 0x03
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};
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enum DESFIRE_AUTH_SCHEME {
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AS_LEGACY,
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AS_NEW
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};
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#define DESFIRE_KEY(key) ((struct desfire_key *) key)
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struct desfire_key {
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enum DESFIRE_CRYPTOALGO type;
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uint8_t data[24];
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uint8_t cmac_sk1[24];
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uint8_t cmac_sk2[24];
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uint8_t aes_version;
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};
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typedef struct desfire_key *desfirekey_t;
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#define DESFIRE(tag) ((struct desfire_tag *) tag)
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struct desfire_tag {
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iso14a_card_select_t info;
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int active;
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uint8_t last_picc_error;
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uint8_t last_internal_error;
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uint8_t last_pcd_error;
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desfirekey_t session_key;
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enum DESFIRE_AUTH_SCHEME authentication_scheme;
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uint8_t authenticated_key_no;
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uint8_t ivect[MAX_CRYPTO_BLOCK_SIZE];
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uint8_t cmac[16];
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uint8_t *crypto_buffer;
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size_t crypto_buffer_size;
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uint32_t selected_application;
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};
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typedef struct desfire_tag *desfiretag_t;
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void des_encrypt(void *out, const void *in, const void *key);
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void des_decrypt(void *out, const void *in, const void *key);
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void tdes_nxp_receive(const void *in, void *out, size_t length, const void *key, unsigned char iv[8], int keymode);
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void tdes_nxp_send(const void *in, void *out, size_t length, const void *key, unsigned char iv[8], int keymode);
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void Desfire_des_key_new(const uint8_t value[8], desfirekey_t key);
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void Desfire_3des_key_new(const uint8_t value[16], desfirekey_t key);
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void Desfire_des_key_new_with_version(const uint8_t value[8], desfirekey_t key);
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void Desfire_3des_key_new_with_version(const uint8_t value[16], desfirekey_t key);
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void Desfire_3k3des_key_new(const uint8_t value[24], desfirekey_t key);
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void Desfire_3k3des_key_new_with_version(const uint8_t value[24], desfirekey_t key);
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void Desfire_2k3des_key_new_with_version(const uint8_t value[16], desfirekey_t key);
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void Desfire_aes_key_new(const uint8_t value[16], desfirekey_t key);
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void Desfire_aes_key_new_with_version(const uint8_t value[16], uint8_t version, desfirekey_t key);
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uint8_t Desfire_key_get_version(desfirekey_t key);
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void Desfire_key_set_version(desfirekey_t key, uint8_t version);
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void Desfire_session_key_new(const uint8_t rnda[], const uint8_t rndb[], desfirekey_t authkey, desfirekey_t key);
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void *mifare_cryto_preprocess_data(desfiretag_t tag, void *data, size_t *nbytes, size_t offset, int communication_settings);
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void *mifare_cryto_postprocess_data(desfiretag_t tag, void *data, size_t *nbytes, int communication_settings);
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void mifare_cypher_single_block(desfirekey_t key, uint8_t *data, uint8_t *ivect, MifareCryptoDirection direction, MifareCryptoOperation operation, size_t block_size);
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void mifare_cypher_blocks_chained(desfiretag_t tag, desfirekey_t key, uint8_t *ivect, uint8_t *data, size_t data_size, MifareCryptoDirection direction, MifareCryptoOperation operation);
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size_t key_block_size(const desfirekey_t key);
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size_t padded_data_length(const size_t nbytes, const size_t block_size);
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size_t maced_data_length(const desfirekey_t key, const size_t nbytes);
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size_t enciphered_data_length(const desfiretag_t tag, const size_t nbytes, int communication_settings);
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void cmac_generate_subkeys(desfirekey_t key);
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void cmac(const desfirekey_t key, uint8_t *ivect, const uint8_t *data, size_t len, uint8_t *cmac);
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#endif
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