Base64 -> hexadecimal string decoder

[naveenpaul1987]

Hi,

I have a base64 encoded string and I want to decode this to hexadecimal.

Can anyone help me?

Thanks in advance.

Regards,

Naveen Paul

[Norm]

Can you give a small example?
Are you asking how to convert and format the base64 String into a String of hexadecimal chatacters?
There would be two steps: convert the base64String to bytes
Then those bytes converted to a String of hexadecimal characters.

[naveenpaul1987]

Exactly..Thats is what I am looking for.

Please browse the following url

Tomasz Ostrowski - Base64 decoder

say base64 string is : Zb4+GmaF1jRbGdCxk7RxXjSzqpEvgU1i0eHI7er0HUk=
and hexadecimal string that I want is: 65BE3E1A6685D6345B19D0B193B4715E34B3AA912F814D62D1 E1C8EDEAF41D49

Can you please provide the coding too?

Thanks in advance

Naveen Paul

[Norm]

There are packages that will do the base64 decoding. I think apache has one. Or if you have another use that.

When you get the bytes from the decoder(I think it should be a byte array) then you can use the Integer class's toHexString() method to convert each byte to a String of 2 hex digits. You will have to pad the values less than 16 with a leading "0"

[Fubarable]

Duplicate thread has been closed. Original poster -- please follow the forum rules that you agreed to on signing up, including posting only one thread per question.

[naveenpaul1987]

Hi
We tried the below code but we are not getting desired output.
import java.io.*;
import org.apache.commons.codec.binary.Base64;
import java.lang.Class;

public class Test {
public static void main(String[] args) throws IOException {

String s = "Zb4+GmaF1jRbGdCxk7RxXjSzqpEvgU1i0eHI7er0HUk=" ;

byte[] encodedBytes = Base64.encodeBase64(s.getBytes());

// System.out.println(encodedBytes);
for (int j = 0; j < encodedBytes.length; j++) {
String hex = Integer.toHexString(encodedBytes[j]);
System.out.print(hex);
}

}
}

Can you please check and help us if we are wrong on this.

Thanks,
Naveen

[Norm]

Can you post the output from the program and show what is wrong with it?

Why are you calling the encode method?