github/RRG-Proxmark3
1
0
Fork 0
mirror of https://github.com/RfidResearchGroup/proxmark3.git synced 2025-08-14 02:27:26 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions

make style

Browse source
This commit is contained in:
Philippe Teuwen 2019-03-10 00:00:59 +01:00
commit 0373696662
483 changed files with 56514 additions and 52451 deletions
Download patch file Download diff file Expand all files Collapse all files

92
armsrc/optimized_cipher.c
View file

@ -96,7 +96,8 @@ uint8_t xopt__select(bool x, bool y, uint8_t r)
}
*/
void opt_successor(const uint8_t* k, State *s, bool y, State* successor) {
void opt_successor(const uint8_t *k, State *s, bool y, State *successor)
{
uint8_t Tt = 1 & opt_T(s);
successor->t = (s->t >> 1);
@ -105,11 +106,12 @@ void opt_successor(const uint8_t* k, State *s, bool y, State* successor) {
successor->b = s->b >> 1;
successor->b |= (opt_B(s) ^ (s->r & 0x1)) << 7;
successor->r = (k[opt__select(Tt,y,s->r)] ^ successor->b) + s->l ;
successor->l = successor->r+s->r;
successor->r = (k[opt__select(Tt, y, s->r)] ^ successor->b) + s->l ;
successor->l = successor->r + s->r;
}
void opt_suc(const uint8_t* k,State* s, uint8_t *in, uint8_t length, bool add32Zeroes) {
void opt_suc(const uint8_t *k, State *s, uint8_t *in, uint8_t length, bool add32Zeroes)
{
State x2;
int i;
uint8_t head = 0;
@ -148,12 +150,13 @@ void opt_suc(const uint8_t* k,State* s, uint8_t *in, uint8_t length, bool add32Z
}
}
void opt_output(const uint8_t* k,State* s, uint8_t *buffer) {
void opt_output(const uint8_t *k, State *s, uint8_t *buffer)
{
uint8_t times = 0;
uint8_t bout = 0;
State temp = {0,0,0,0};
for ( ; times < 4; times++) {
bout =0;
State temp = {0, 0, 0, 0};
for (; times < 4; times++) {
bout = 0;
bout |= (s->r & 0x4) << 5;
opt_successor(k, s, 0, &temp);
bout |= (temp.r & 0x4) << 4;
@ -174,54 +177,59 @@ void opt_output(const uint8_t* k,State* s, uint8_t *buffer) {
}
}
void opt_MAC(uint8_t* k, uint8_t* input, uint8_t* out) {
void opt_MAC(uint8_t *k, uint8_t *input, uint8_t *out)
{
State _init = {
((k[0] ^ 0x4c) + 0xEC) & 0xFF,// l
((k[0] ^ 0x4c) + 0x21) & 0xFF,// r
0x4c, // b
0xE012 // t
};
((k[0] ^ 0x4c) + 0xEC) & 0xFF,// l
((k[0] ^ 0x4c) + 0x21) & 0xFF,// r
0x4c, // b
0xE012 // t
};
opt_suc(k,&_init,input,12, false);
opt_output(k,&_init, out);
opt_suc(k, &_init, input, 12, false);
opt_output(k, &_init, out);
}
uint8_t rev_byte(uint8_t b) {
uint8_t rev_byte(uint8_t b)
{
b = (b & 0xF0) >> 4 | (b & 0x0F) << 4;
b = (b & 0xCC) >> 2 | (b & 0x33) << 2;
b = (b & 0xAA) >> 1 | (b & 0x55) << 1;
return b;
return b;
}
void opt_reverse_arraybytecpy(uint8_t* dest, uint8_t *src, size_t len) {
void opt_reverse_arraybytecpy(uint8_t *dest, uint8_t *src, size_t len)
{
uint8_t i;
for ( i =0; i< len ; i++)
for (i = 0; i < len ; i++)
dest[i] = rev_byte(src[i]);
}
void opt_doReaderMAC(uint8_t *cc_nr_p, uint8_t *div_key_p, uint8_t mac[4]) {
void opt_doReaderMAC(uint8_t *cc_nr_p, uint8_t *div_key_p, uint8_t mac[4])
{
static uint8_t cc_nr[12];
opt_reverse_arraybytecpy(cc_nr, cc_nr_p, 12);
uint8_t dest [] = {0,0,0,0,0,0,0,0};
uint8_t dest [] = {0, 0, 0, 0, 0, 0, 0, 0};
opt_MAC(div_key_p, cc_nr, dest);
//The output MAC must also be reversed
opt_reverse_arraybytecpy(mac, dest, 4);
return;
}
void opt_doTagMAC(uint8_t *cc_p, const uint8_t *div_key_p, uint8_t mac[4]) {
static uint8_t cc_nr[8+4+4];
void opt_doTagMAC(uint8_t *cc_p, const uint8_t *div_key_p, uint8_t mac[4])
{
static uint8_t cc_nr[8 + 4 + 4];
opt_reverse_arraybytecpy(cc_nr, cc_p, 12);
State _init = {
((div_key_p[0] ^ 0x4c) + 0xEC) & 0xFF,// l
((div_key_p[0] ^ 0x4c) + 0x21) & 0xFF,// r
0x4c, // b
0xE012 // t
};
((div_key_p[0] ^ 0x4c) + 0xEC) & 0xFF,// l
((div_key_p[0] ^ 0x4c) + 0x21) & 0xFF,// r
0x4c, // b
0xE012 // t
};
opt_suc(div_key_p, &_init, cc_nr, 12, true);
uint8_t dest [] = {0,0,0,0};
uint8_t dest [] = {0, 0, 0, 0};
opt_output(div_key_p, &_init, dest);
//The output MAC must also be reversed
opt_reverse_arraybytecpy(mac, dest,4);
opt_reverse_arraybytecpy(mac, dest, 4);
return;
}
@ -233,15 +241,16 @@ void opt_doTagMAC(uint8_t *cc_p, const uint8_t *div_key_p, uint8_t mac[4]) {
* @param div_key_p
* @return the cipher state
*/
State opt_doTagMAC_1(uint8_t *cc_p, const uint8_t *div_key_p) {
State opt_doTagMAC_1(uint8_t *cc_p, const uint8_t *div_key_p)
{
static uint8_t cc_nr[8];
opt_reverse_arraybytecpy(cc_nr, cc_p, 8);
State _init = {
((div_key_p[0] ^ 0x4c) + 0xEC) & 0xFF,// l
((div_key_p[0] ^ 0x4c) + 0x21) & 0xFF,// r
0x4c, // b
0xE012 // t
};
((div_key_p[0] ^ 0x4c) + 0xEC) & 0xFF,// l
((div_key_p[0] ^ 0x4c) + 0x21) & 0xFF,// r
0x4c, // b
0xE012 // t
};
opt_suc(div_key_p, &_init, cc_nr, 8, false);
return _init;
}
@ -254,14 +263,15 @@ State opt_doTagMAC_1(uint8_t *cc_p, const uint8_t *div_key_p) {
* @param mac - where to store the MAC
* @param div_key_p - the key to use
*/
void opt_doTagMAC_2(State _init, uint8_t* nr, uint8_t mac[4], const uint8_t* div_key_p) {
void opt_doTagMAC_2(State _init, uint8_t *nr, uint8_t mac[4], const uint8_t *div_key_p)
{
static uint8_t _nr[4];
opt_reverse_arraybytecpy(_nr, nr, 4);
opt_suc(div_key_p, &_init,_nr, 4, true);
opt_suc(div_key_p, &_init, _nr, 4, true);
uint8_t dest [] = {0,0,0,0};
uint8_t dest [] = {0, 0, 0, 0};
opt_output(div_key_p, &_init, dest);
//The output MAC must also be reversed
opt_reverse_arraybytecpy(mac, dest,4);
opt_reverse_arraybytecpy(mac, dest, 4);
return;
}