Use uint64_t for chainID

src/chainConfig.h

@@ -60,7 +60,7 @@ typedef enum chain_kind_e {
 
 typedef struct chain_config_s {
     char coinName[10];  // ticker
-    uint32_t chainId;
+    uint64_t chainId;
     chain_kind_t kind;
 } chain_config_t;
 

src/utils.c

@@ -54,19 +54,17 @@ int local_strchr(char *string, char ch) {
     return -1;
 }
 
-uint32_t u32_from_BE(uint8_t *in, uint8_t size) {
-    switch (size) {
-        case 0:
-            return 0;
-        case 1:
-            return in[0];
-        case 2:
-            return (in[0] << 8) | in[1];
-        case 3:
-            return (in[0] << 16) | (in[1] << 8) | in[2];
-        default:
-            return (in[0] << 24) | (in[1] << 16) | (in[2] << 8) | in[3];
+uint64_t u64_from_BE(uint8_t *in, uint8_t size) {
+    uint8_t i = 0;
+    uint64_t res = 0;
+
+    while (i < size && i < sizeof(res)) {
+        res <<= 8;
+        res |= in[i];
+        i++;
     }
+
+    return res;
 }
 
 bool uint256_to_decimal(const uint8_t *value, size_t value_len, char *out, size_t out_len) {

src/utils.h

@@ -28,7 +28,7 @@ void convertUint256BE(uint8_t* data, uint32_t length, uint256_t* target);
 
 int local_strchr(char* string, char ch);
 
-uint32_t u32_from_BE(uint8_t* in, uint8_t size);
+uint64_t u64_from_BE(uint8_t* in, uint8_t size);
 
 bool uint256_to_decimal(const uint8_t* value, size_t value_len, char* out, size_t out_len);