Decrypt binary file

[CMorrison82z]

Encrypted with :

gpg -c --s2k-cipher-algo AES256 t

I attempted to decrypt with :

fn decrypt_aes256(bytes: &[u8], passphrase: &str) -> Result<String, anyhow::Error> {
    let buf = Cursor::new(bytes);
    let msg = composed::message::Message::from_bytes(buf)
        .context("Failed")?;

    let decryptor = msg
        .decrypt_with_password(|| String::from(passphrase))
        .context("Decrypting the message")?;

    for msg in decryptor {
        let bytes = msg?.get_content()?.unwrap();
        let clear_text = String::from_utf8(bytes)?;
        return Ok(clear_text);
    }

    Err(anyhow::Error::msg("Failed to find message"))
}

I couldn't find alternatives after looking through other Deserialization implementations or anything else (aside from maybe just using the SymmetricKeyAlgorithm decrypt method directly?)