fix: WITH_EM4x70. Get rid of the dependency on WITH_ICLASS.

armsrc/em4x70.c

@@ -377,7 +377,7 @@ static int bruteforce(const uint8_t address, const uint8_t *rnd, const uint8_t *
     uint8_t rev_rnd[7];
     uint8_t temp_rnd[7];
 
-    reverse_arraycopy((uint8_t *)rnd, rev_rnd, sizeof(rev_rnd));
+    reverse_arraybytes_copy((uint8_t *)rnd, rev_rnd, sizeof(rev_rnd));
     memcpy(temp_rnd, rnd, sizeof(temp_rnd));
 
     for (int k = start_key; k <= 0xFFFF; ++k) {

armsrc/optimized_cipherutils.c

@@ -114,24 +114,3 @@ uint64_t x_bytes_to_num(uint8_t *src, size_t len) {
     return num;
 }
 
-uint8_t reversebyte(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;
-}
-
-void reverse_arraybytes(uint8_t *arr, size_t len) {
-    size_t i;
-    for (i = 0; i < len ; i++) {
-        arr[i] = reversebyte(arr[i]);
-    }
-}
-
-void reverse_arraycopy(uint8_t *arr, uint8_t *dest, size_t len) {
-    size_t i;
-    for (i = 0; i < len ; i++) {
-        dest[i] = reversebyte(arr[i]);
-    }
-}
-

armsrc/optimized_cipherutils.h

@@ -57,7 +57,4 @@ int bitsLeft(BitstreamIn_t *stream);
 void push6bits(BitstreamOut_t *stream, uint8_t bits);
 void x_num_to_bytes(uint64_t n, size_t len, uint8_t *dest);
 uint64_t x_bytes_to_num(uint8_t *src, size_t len);
-uint8_t reversebyte(uint8_t b);
-void reverse_arraybytes(uint8_t *arr, size_t len);
-void reverse_arraycopy(uint8_t *arr, uint8_t *dest, size_t len);
 #endif // CIPHERUTILS_H

client/src/loclass/cipher.c

@@ -34,6 +34,7 @@
 
 #include "cipher.h"
 #include "cipherutils.h"
+#include "commonutil.h"
 #include <stdlib.h>
 #include <string.h>
 #include <stdbool.h>

client/src/loclass/cipherutils.c

@@ -125,18 +125,6 @@ uint64_t x_bytes_to_num(uint8_t *src, size_t len) {
     return num;
 }
 
-void reverse_arraybytes(uint8_t *arr, size_t len) {
-    for (size_t i = 0; i < len ; i++) {
-        arr[i] = reflect8(arr[i]);
-    }
-}
-
-void reverse_arraycopy(uint8_t *arr, uint8_t *dest, size_t len) {
-    for (size_t i = 0; i < len ; i++) {
-        dest[i] = reflect8(arr[i]);
-    }
-}
-
 void printarr(const char *name, uint8_t *arr, int len) {
     if (name == NULL || arr == NULL) return;
 

client/src/loclass/cipherutils.h

@@ -62,9 +62,6 @@ int testCipherUtils(void);
 void push6bits(BitstreamOut_t *stream, uint8_t bits);
 void x_num_to_bytes(uint64_t n, size_t len, uint8_t *dest);
 uint64_t x_bytes_to_num(uint8_t *src, size_t len);
-uint8_t reversebyte(uint8_t b);
-void reverse_arraybytes(uint8_t *arr, size_t len);
-void reverse_arraycopy(uint8_t *arr, uint8_t *dest, size_t len);
 void printarr(const char *name, uint8_t *arr, int len);
 void printarr_human_readable(const char *title, uint8_t *arr, int len);
 #endif // CIPHERUTILS_H

common/commonutil.c

@@ -549,3 +549,17 @@ bool hexstr_to_byte_array(const char *hexstr, uint8_t *d, size_t *n) {
     }
     return true;
 }
+
+void reverse_arraybytes(uint8_t *arr, size_t len) {
+    size_t i;
+    for (i = 0; i < len ; i++) {
+        arr[i] = reflect8(arr[i]);
+    }
+}
+
+void reverse_arraybytes_copy(uint8_t *arr, uint8_t *dest, size_t len) {
+    size_t i;
+    for (i = 0; i < len ; i++) {
+        dest[i] = reflect8(arr[i]);
+    }
+}

common/commonutil.h

@@ -130,4 +130,7 @@ void reverse_array(uint8_t *d, size_t n);
 void reverse_array_copy(const uint8_t *src, int src_len, uint8_t *dest);
 
 bool hexstr_to_byte_array(const char *hexstr, uint8_t *d, size_t *n);
+
+void reverse_arraybytes(uint8_t *arr, size_t len);
+void reverse_arraybytes_copy(uint8_t *arr, uint8_t *dest, size_t len);
 #endif

common_arm/Makefile.hal

@@ -73,6 +73,7 @@ and you can specify which parts to skip in order to reduce the size:
 SKIP_LF=1
 SKIP_HITAG=1
 SKIP_EM4x50=1
+SKIP_EM4x70=1
 SKIP_ISO15693=1
 SKIP_LEGICRF=1
 SKIP_ISO14443b=1