nfc: Add mifare classic value block commands (#2317)

Co-authored-by: gornekich <n.gorbadey@gmail.com>
Co-authored-by: あく <alleteam@gmail.com>

lib/nfc/protocols/nfc_util.c

@@ -23,7 +23,7 @@ void nfc_util_num2bytes(uint64_t src, uint8_t len, uint8_t* dest) {
     }
 }
 
-uint64_t nfc_util_bytes2num(uint8_t* src, uint8_t len) {
+uint64_t nfc_util_bytes2num(const uint8_t* src, uint8_t len) {
     furi_assert(src);
     furi_assert(len <= 8);
 
@@ -45,3 +45,26 @@ uint8_t nfc_util_even_parity32(uint32_t data) {
 uint8_t nfc_util_odd_parity8(uint8_t data) {
     return nfc_util_odd_byte_parity[data];
 }
+
+void nfc_util_odd_parity(const uint8_t* src, uint8_t* dst, uint8_t len) {
+    furi_assert(src);
+    furi_assert(dst);
+
+    uint8_t parity = 0;
+    uint8_t bit = 0;
+    while(len--) {
+        parity |= nfc_util_odd_parity8(*src) << (7 - bit); // parity is MSB first
+        bit++;
+        if(bit == 8) {
+            *dst = parity;
+            dst++;
+            parity = 0;
+            bit = 0;
+        }
+        src++;
+    }
+
+    if(bit) {
+        *dst = parity;
+    }
+}