Buffer improvements and fixed special characters in ssid

lib/CloudConnector/src/CloudConnector.cpp

@@ -0,0 +1,56 @@
+#include "CloudConnector.h"
+
+CloudConnector::CloudConnector(RemoteDebug* debugger) {
+    this->debugger = debugger;
+    mbedtls_pk_context pk;
+    mbedtls_pk_init(&pk);
+
+    int error_code = 0;
+    if((error_code =  mbedtls_pk_parse_public_key(&pk, PUBLIC_KEY, sizeof(PUBLIC_KEY))) == 0){
+        debugger->printf("RSA public key OK\n");
+        rsa = mbedtls_pk_rsa(pk);
+    } else {
+        debugger->printf("RSA public key read error: ");
+        mbedtls_strerror(error_code, (char*) buf, 4096);
+        debugger->printf("%s\n", buf);
+    }
+    debugger->flush();
+    //send();
+}
+
+void CloudConnector::send() {
+    if(rsa != nullptr && mbedtls_rsa_check_pubkey(rsa) == 0) {
+        memset(buf, 0, 4096);
+
+        CloudData data = {65, 127};
+        unsigned char toEncrypt[4096] = {0};
+
+        debugger->println("RSA clear data: ");
+        debugPrint(toEncrypt, 0, 256);
+
+        mbedtls_rsa_rsaes_pkcs1_v15_encrypt(rsa, NULL, NULL, MBEDTLS_RSA_PUBLIC, 256, toEncrypt, buf);
+
+        //byte hashResult[32];
+        //mbedtls_sha256(toEncrypt, strlen((char*) toEncrypt), hashResult, 0);
+        //int success = mbedtls_rsa_rsassa_pkcs1_v15_sign(rsa, NULL, NULL, MBEDTLS_RSA_PUBLIC, MBEDTLS_MD_SHA256,  strlen((char*) hashResult), hashResult, buf);
+        debugger->println("RSA encrypted data: ");
+        debugPrint(buf, 0, 256);
+    } else {
+        debugger->println("RSA key is invalid");
+    }
+}
+void CloudConnector::debugPrint(byte *buffer, int start, int length) {
+	for (int i = start; i < start + length; i++) {
+		if (buffer[i] < 0x10)
+			debugger->print(F("0"));
+		debugger->print(buffer[i], HEX);
+		debugger->print(F(" "));
+		if ((i - start + 1) % 16 == 0)
+			debugger->println(F(""));
+		else if ((i - start + 1) % 4 == 0)
+			debugger->print(F(" "));
+
+		yield(); // Let other get some resources too
+	}
+	debugger->println(F(""));
+}