How to convert byte value to ASCII character?

Can anyone help me?
I want to convert byte value to ascii character:

this is my code:

String encryption(String message, String pass)
{
int n, i = 0;
char chiper[8];
String chipertext="";
byte out[8], data;
byte in[message.length() + 1];
message.getBytes(in, message.length() + 1);
byte password[pass.length() + 1];
pass.getBytes(password, pass.length() + 1);
unsigned long time = micros();
des.encrypt(out, in, password);
time = micros() - time;
waktu_enkrip = waktu_enkrip + time;
for (int i = 0; i < 8; i++)
{
Serial.println(out*);*

  • }*
  • //return (chipertext);*
    }
    output from my code is:
    0
    18
    2
    213
    165
    14
    231
    137
    but I want to byte out value convert to ascii char
    from ascii char, i want to join it be string.
    anyone help me?
    thank you very much

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