CODEWITHSUNDEEP
arrayscertificatehexbytersa-key-fingerprint
bubuStar
bubuStar

Reputation: 633

How to convert a string of certificate fingerprint to byte array in Java?

My program asks user to input a string of certificate fingerprint then convert the input to byte array for later use. What I am asking is how should I convert the inputStringArray to the convertResult byte array?

String input = "2F:A3:CF:8F:D6:ED:06:79:B8:FB:DB:0E:3B:A4:52:45:83:8E:7F:C5";
String[] inputStringArray = input.trim().split(":");

//convert inputStringArray to results array here
//...

byte[] convertResult = new byte[]
                {(byte)0x2f, (byte)0xa3, (byte)0xcf, (byte)0x8f, (byte)0xd6, (byte)0xed, (byte)0x06, (byte)0x79, (byte)0xb8, (byte)0xfb,
                        (byte)0xdb, (byte)0x0e, (byte)0x3b, (byte)0xa4, (byte)0x52, (byte)0x45, (byte)0x83, (byte)0x8e, (byte)0x7f, (byte)0xc5};

Thanks!

Upvotes: 0

Views: 683

Answers (1)

bubuStar
bubuStar

Reputation: 633

answer to my own question:

public static byte[] str2bytes(String input) {
        String [] hex_list = input.split(":");
        byte[] output = new byte[hex_list.length];
        int i = 0;
        for (String hex: hex_list) {
            output[i] = (byte) Integer.parseInt(hex, 16);
            i ++;
        }
        return output;
    }

Upvotes: 0

Related Questions