Function gen_messages

saver/src/encryption.rs:911–919

(
        rng: &mut R,
        count: u32,
        chunk_bit_size: u8,
    )

    }

    pub fn gen_messages<R: RngCore>(
        rng: &mut R,
        count: u32,
        chunk_bit_size: u8,
    ) -> Vec<CHUNK_TYPE> {
        (0..count)
            .map(|_| (u32::rand(rng) & ((1 << chunk_bit_size) - 1)) as CHUNK_TYPE)
            .collect()
    }

    #[test]
    fn encrypt_decrypt() {