mirror of
https://github.com/RfidResearchGroup/proxmark3.git
synced 2025-08-14 18:48:13 -07:00
changing {} style to match majority of previous style
This commit is contained in:
Philippe Teuwen
parent
da6cdf014b
commit
961d929f4d
320 changed files with 5502 additions and 10485 deletions
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@ -11,8 +11,7 @@ static uint16_t crc_table[256];
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static bool crc_table_init = false;
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static CrcType_t crc_type = CRC_NONE;
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void init_table(CrcType_t ct)
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{
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void init_table(CrcType_t ct) {
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// same crc algo, and initialised already
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if (ct == crc_type && crc_table_init)
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@ -50,8 +49,7 @@ void init_table(CrcType_t ct)
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}
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}
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void generate_table(uint16_t polynomial, bool refin)
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{
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void generate_table(uint16_t polynomial, bool refin) {
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uint16_t i, j, crc, c;
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@ -79,16 +77,14 @@ void generate_table(uint16_t polynomial, bool refin)
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crc_table_init = true;
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}
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void reset_table(void)
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{
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void reset_table(void) {
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memset(crc_table, 0, sizeof(crc_table));
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crc_table_init = false;
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crc_type = CRC_NONE;
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}
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// table lookup LUT solution
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uint16_t crc16_fast(uint8_t const *d, size_t n, uint16_t initval, bool refin, bool refout)
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{
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uint16_t crc16_fast(uint8_t const *d, size_t n, uint16_t initval, bool refin, bool refout) {
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// fast lookup table algorithm without augmented zero bytes, e.g. used in pkzip.
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// only usable with polynom orders of 8, 16, 24 or 32.
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@ -112,8 +108,7 @@ uint16_t crc16_fast(uint8_t const *d, size_t n, uint16_t initval, bool refin, bo
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}
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// bit looped solution TODO REMOVED
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uint16_t update_crc16_ex(uint16_t crc, uint8_t c, uint16_t polynomial)
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{
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uint16_t update_crc16_ex(uint16_t crc, uint8_t c, uint16_t polynomial) {
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uint16_t i, v, tmp = 0;
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v = (crc ^ c) & 0xff;
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@ -129,14 +124,12 @@ uint16_t update_crc16_ex(uint16_t crc, uint8_t c, uint16_t polynomial)
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}
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return ((crc >> 8) ^ tmp) & 0xffff;
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}
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uint16_t update_crc16(uint16_t crc, uint8_t c)
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{
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uint16_t update_crc16(uint16_t crc, uint8_t c) {
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return update_crc16_ex(crc, c, CRC16_POLY_CCITT);
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}
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// two ways. msb or lsb loop.
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uint16_t crc16(uint8_t const *d, size_t length, uint16_t remainder, uint16_t polynomial, bool refin, bool refout)
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{
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uint16_t crc16(uint8_t const *d, size_t length, uint16_t remainder, uint16_t polynomial, bool refin, bool refout) {
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if (length == 0)
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return (~remainder);
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@ -163,8 +156,7 @@ uint16_t crc16(uint8_t const *d, size_t length, uint16_t remainder, uint16_t pol
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return remainder;
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}
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void compute_crc(CrcType_t ct, const uint8_t *d, size_t n, uint8_t *first, uint8_t *second)
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{
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void compute_crc(CrcType_t ct, const uint8_t *d, size_t n, uint8_t *first, uint8_t *second) {
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// can't calc a crc on less than 1 byte
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if (n == 0) return;
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@ -199,8 +191,7 @@ void compute_crc(CrcType_t ct, const uint8_t *d, size_t n, uint8_t *first, uint8
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*first = (crc & 0xFF);
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*second = ((crc >> 8) & 0xFF);
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}
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uint16_t crc(CrcType_t ct, const uint8_t *d, size_t n)
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{
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uint16_t crc(CrcType_t ct, const uint8_t *d, size_t n) {
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// can't calc a crc on less than 3 byte. (1byte + 2 crc bytes)
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if (n < 3) return 0;
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@ -236,8 +227,7 @@ uint16_t crc(CrcType_t ct, const uint8_t *d, size_t n)
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// crc16 algos like CRC-A become 0x000
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// while CRC-15693 become 0x0F47
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// If calculated with crc bytes, the residue should be 0xF0B8
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bool check_crc(CrcType_t ct, const uint8_t *d, size_t n)
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{
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bool check_crc(CrcType_t ct, const uint8_t *d, size_t n) {
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// can't calc a crc on less than 3 byte. (1byte + 2 crc bytes)
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if (n < 3) return false;
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@ -265,22 +255,19 @@ bool check_crc(CrcType_t ct, const uint8_t *d, size_t n)
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}
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// poly=0x1021 init=0xffff refin=false refout=false xorout=0x0000 check=0x29b1 residue=0x0000 name="CRC-16/CCITT-FALSE"
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uint16_t crc16_ccitt(uint8_t const *d, size_t n)
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{
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uint16_t crc16_ccitt(uint8_t const *d, size_t n) {
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return crc16_fast(d, n, 0xffff, false, false);
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}
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// FDX-B ISO11784/85) uses KERMIT
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// poly=0x1021 init=0x0000 refin=true refout=true xorout=0x0000 name="KERMIT"
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uint16_t crc16_kermit(uint8_t const *d, size_t n)
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{
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uint16_t crc16_kermit(uint8_t const *d, size_t n) {
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return crc16_fast(d, n, 0x0000, true, true);
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}
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// FeliCa uses XMODEM
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// poly=0x1021 init=0x0000 refin=false refout=false xorout=0x0000 name="XMODEM"
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uint16_t crc16_xmodem(uint8_t const *d, size_t n)
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{
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uint16_t crc16_xmodem(uint8_t const *d, size_t n) {
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return crc16_fast(d, n, 0x0000, false, false);
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}
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@ -289,16 +276,14 @@ uint16_t crc16_xmodem(uint8_t const *d, size_t n)
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// ISO 14443 CRC-B
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// ISO/IEC 13239 (formerly ISO/IEC 3309)
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// poly=0x1021 init=0xffff refin=true refout=true xorout=0xffff name="X-25"
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uint16_t crc16_x25(uint8_t const *d, size_t n)
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{
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uint16_t crc16_x25(uint8_t const *d, size_t n) {
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uint16_t crc = crc16_fast(d, n, 0xffff, true, true);
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crc = ~crc;
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return crc;
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}
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// CRC-A (14443-3)
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// poly=0x1021 init=0xc6c6 refin=true refout=true xorout=0x0000 name="CRC-A"
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uint16_t crc16_a(uint8_t const *d, size_t n)
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{
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uint16_t crc16_a(uint8_t const *d, size_t n) {
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return crc16_fast(d, n, 0xC6C6, true, true);
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}
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@ -306,15 +291,13 @@ uint16_t crc16_a(uint8_t const *d, size_t n)
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// initvalue 0x4807 reflected 0xE012
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// poly 0x1021 reflected 0x8408
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// poly=0x1021 init=0x4807 refin=true refout=true xorout=0x0BC3 check=0xF0B8 name="CRC-16/ICLASS"
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uint16_t crc16_iclass(uint8_t const *d, size_t n)
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{
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uint16_t crc16_iclass(uint8_t const *d, size_t n) {
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return crc16_fast(d, n, 0x4807, true, true);
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}
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// This CRC-16 is used in Legic Advant systems.
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// poly=0xB400, init=depends refin=true refout=true xorout=0x0000 check= name="CRC-16/LEGIC"
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uint16_t crc16_legic(uint8_t const *d, size_t n, uint8_t uidcrc)
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{
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uint16_t crc16_legic(uint8_t const *d, size_t n, uint8_t uidcrc) {
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uint16_t initial = uidcrc << 8 | uidcrc;
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return crc16_fast(d, n, initial, true, true);
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}
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