implemented client-server connection, but found out RSA is broken

src/config.c

@@ -0,0 +1,36 @@
+#include "config.h"
+
+Result(void) config_findValue(str config_str, str key, str* value, bool throwNotFoundError){
+    u32 line_n = 0;
+    while(config_str.size > 0){
+        line_n++;
+        i32 line_end = str_seekChar(config_str, '\n', 0);
+        if(line_end < 0)
+            line_end = config_str.size - 1;
+        str line = str_sliceBefore(config_str, line_end);
+        config_str = str_sliceAfter(config_str, line_end + 1);
+        
+        i32 sep_pos = str_seekChar(line, '=', 1);
+        if(sep_pos < 0){
+            //not a 'key = value' line
+            continue;
+        }
+
+        str line_key = str_sliceBefore(line, sep_pos - 1);
+        str_trim(&line_key, false);
+        if(str_equals(line_key, key)){
+            str line_value = str_sliceAfter(line, sep_pos + 1);
+            str_trim(&line_value, false);
+            *value = line_value;
+            return RESULT_VOID;
+        }
+    }
+
+    if(throwNotFoundError){
+        char* key_cstr = str_copy(key).data;
+        char* err_msg = sprintf_malloc(key.size + 64, "can't find key '%s'", key_cstr);
+        free(key_cstr);
+        return RESULT_ERROR(err_msg, true);
+    }
+    return RESULT_VOID;
+}