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I have a series of hex values that I need to convert to int from an intel Hex Format.

However, those values are within a single string, have no separator and differ in length.

Example of a string: :A40425B6 which represents 3 int: A4, 0425 and B6.

In C, there is a simple way to do it (after removing the :) :

sscanf(line.toLocal8Bit().constData(), "%2x%4x%2x", &byteCount, &address, &recordType);

Of course, it would be possible to simply split the string with delimiters and then convert it like:

             byteCount = Convert.ToInt32(line.Substring(1, 2), 16);             address = Convert.ToUInt32(line.Substring(3, 4), 16);             recordType = Convert.ToUInt32(line.Substring(7, 2), 16);

However, is there a cleaner way to do it similar to C?

What is the best way to convert a variable length hex string e.g. "01A1" to a byte array containing that data.

i.e converting this:

std::string = "01A1";

into this

char* hexArray;int hexLength;

or this

std::vector<char> hexArray;

so that when I write this to a file and hexdump -C it I get the binary data containing 01A1.

How can we convert from String to Hex in java

This code is part of AES encryption algorithm, I have this method that return the encrypted value as: String I need it to return the result as Hex instead .

public static String encrypt(String Data) throws NoSuchPaddingException, NoSuchAlgorithmException, InvalidKeyException, BadPaddingException, IllegalBlockSizeException {    Key key = generateKey();    Cipher c = Cipher.getInstance(ALGO);    c.init(Cipher.ENCRYPT_MODE, key);    byte[] encVal = c.doFinal(Data.getBytes());    String encryptedValue = new String( Base64.getEncoder().encode(encVal) ) ;    return encryptedValue;}

I am trying to convert a string like "testing123" into hexadecimal form in java. I am currently using BlueJ.

And to convert it back, is it the same thing except backward?

While importing data from a flat file, I noticed some embedded hex-values in the string (<0x00>, <0x01>).

I want to replace them with specific characters, but am unable to do so. Removing them won't work either.What it looks like in the exported flat file: https://i.imgur.com/7MQpoMH.pngAnother example: https://i.imgur.com/3ZUSGIr.png

This is what I've tried: (and mind, <0x01> represents a none-editable entity. It's not recognized here.)

import iowith io.open('1.txt', 'r+', encoding="utf-8") as p:    s=p.read()# included in case it bears any significance

import reimport binasciis = "Some string with hex: <0x01>"s = s.encode('latin1').decode('utf-8')# throws e.g.: >>> UnicodeDecodeError: 'utf-8' codec can't decode byte 0xfc in position 114: invalid start bytes = re.sub(r'<0x01>', r'.', s)s = re.sub(r'\\0x01', r'.', s)s = re.sub(r'\\\\0x01', r'.', s)s = s.replace('\0x01', '.')s = s.replace('<0x01>', '.')s = s.replace('0x01', '.')

or something along these lines in hopes to get a grasp of it while iterating through the whole string:

for x in s:    try:        base64.encodebytes(x)        base64.decodebytes(x)        s.strip(binascii.unhexlify(x))        s.decode('utf-8')        s.encode('latin1').decode('utf-8')    except:        pass

Nothing seems to get the job done.

I'd expect the characters to be replacable with the methods I've dug up, but they are not. What am I missing?NB: I have to preserve umlauts (äöüÄÖÜ)

-- edit:

Could I introduce the hex-values in the first place when exporting? If so, is there a way to avoid that?

with io.open('out.txt', 'w', encoding="utf-8") as temp:    temp.write(s)