Function hex_string_to_nibble_array

bitvm/src/chunk/helpers.rs:64–69

(hex_string: &str)

    );

    fn hex_string_to_nibble_array(hex_string: &str) -> Vec<u8> {
        hex_string
            .chars()
            .map(|c| c.to_digit(16).expect("Invalid hex character") as u8) // Convert each char to a nibble
            .collect()
    }

    fn nib_to_byte_array(digits: &[u8]) -> Vec<u8> {
        let mut msg_bytes = Vec::with_capacity(digits.len() / 2);