> For the complete documentation index, see [llms.txt](https://digitalgarden.batamladen.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://digitalgarden.batamladen.com/writeups/cryptopals/set-1/hex-to-base64.md).

# Hex to Base64

## Task

String:

```
49276d206b696c6c696e6720796f757220627261696e206c696b65206120706f69736f6e6f7573206d757368726f6f6d
```

Should produce:

```
SSdtIGtpbGxpbmcgeW91ciBicmFpbiBsaWtlIGEgcG9pc29ub3VzIG11c2hyb29t
```

So go ahead and make that happen. You'll need to use this code for the rest of the exercises.

{% hint style="info" %}

#### Cryptopals Rule

Always operate on raw bytes, never on encoded strings. Only use hex and base64 for pretty-printing.
{% endhint %}

## Solve

```python
import base64

def hex_to_base64(hex_string):
    
    byte_data = bytes.fromhex(hex_string)
    
    base64_encoded = base64.b64encode(byte_data)
    
    return base64_encoded.decode('utf-8')

hex_value = input("Enter a hex string: ")
print(hex_to_base64(hex_value))
```


---

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