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Check received length of the frame that is supposed to contain the PCD challenge 

Add code to get/set uid/nonce


git-svn-id: https://svn.openpcd.org:2342/trunk@474 6dc7ffe9-61d6-0310-9af1-9938baff3ed1
This commit is contained in:
henryk 2008-04-28 16:24:08 +00:00
parent 64dfc1c67c
commit 640d692258
2 changed files with 30 additions and 5 deletions
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30
openpicc/application/iso14443a_pretender.c
View File

@ -47,6 +47,7 @@ struct challenge_response {
struct {
u_int8_t data[8];
u_int8_t parity[2];
size_t len;
} response;
};
@ -73,7 +74,8 @@ static const iso14443_frame ATS_FRAME = {
};
static iso14443_frame UID_FRAME, NONCE_FRAME;
static u_int8_t UID[] = {0xF4, 0xAC, 0xF9, 0xD7}; // bcc = 0x76
//static u_int8_t UID[] = {0xF4, 0xAC, 0xF9, 0xD7}; // bcc = 0x76
static u_int8_t UID[] = {0x00, 0x00, 0x00, 0x00};
static u_int8_t nonce[] = {0x00, 0x00, 0x00, 0x00};
#define FRAME_SIZE(bytes) (2* (1+(9*bytes)+1) )
@ -191,17 +193,21 @@ static void fast_receive_callback(ssc_dma_rx_buffer_t *buffer, iso14443_frame *f
challenge_response.waiting_for_response = 1;
usb_print_string_f("nonce", 0);
} else if(challenge_response.waiting_for_response) {
memcpy(&challenge_response.response.data, frame->data, 8);
memcpy(&challenge_response.response.parity, frame->parity, 1);
challenge_response.waiting_for_response = 0;
if(frame->numbytes != 8) {
usb_print_string_f("tilt ",0);
}
challenge_response.response.len = frame->numbytes + (frame->numbits+7)/8;
memcpy(&challenge_response.response.data, frame->data, challenge_response.response.len);
memcpy(&challenge_response.response.parity, frame->parity, 1);
int old=usb_print_set_default_flush(0);
DumpStringToUSB("[[");
DumpBufferToUSB((char*)challenge_response.UID, 5);
DumpStringToUSB(" ");
DumpBufferToUSB((char*)challenge_response.nonce, 4);
DumpStringToUSB(" ");
DumpBufferToUSB((char*)challenge_response.response.data, 8);
DumpBufferToUSB((char*)challenge_response.response.data, challenge_response.response.len);
DumpStringToUSB("]]");
usb_print_set_default_flush(old);
}
@ -241,6 +247,13 @@ int set_UID(u_int8_t *uid, size_t len)
return 0;
}
int get_UID(u_int8_t *uid, size_t len)
{
if(len < 4 || len > 4) return -1;
memcpy(uid, UID, len);
return 0;
}
int set_nonce(u_int8_t *_nonce, size_t len)
{
prepare_frame(&NONCE_FRAME, len);
@ -256,6 +269,13 @@ int set_nonce(u_int8_t *_nonce, size_t len)
return 0;
}
int get_nonce(u_int8_t *_nonce, size_t len)
{
if(len < 4 || len > 4) return -1;
memcpy(_nonce, nonce, len);
return 0;
}
void iso14443a_pretender (void *pvParameters)
{
(void)pvParameters;

5
openpicc/application/iso14443a_pretender.h
View File

@ -2,6 +2,11 @@
#define ISO14443A_PRETENDER_H_
extern void iso14443a_pretender (void *pvParameters);
extern int set_UID(u_int8_t *uid, size_t len);
extern int get_UID(u_int8_t *uid, size_t len);
extern int set_nonce(u_int8_t *uid, size_t len);
extern int get_nonce(u_int8_t *uid, size_t len);
#endif /*ISO14443A_PRETENDER_H_*/