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//! # aes_frast
//! `aes_frast` is an easy-to-use lib for AES encryption and decryption, coded in pure safe
//! Rust-lang.
/// The `aes_core` mod provides the essential functions of AES, including key scheduling and
/// single-block crypto.
pub mod aes_core;
/// The `aes_with_operation_mode` mod provides operation modes such as CBC and OFB, and so on.
pub mod aes_with_operation_mode;
/// The `padding_128bit` mod provides padding and depadding functions for 128bit-block crypto.
pub mod padding_128bit;

/// Miscellaneous functions
pub mod misc {
    /// Convert hexadecimal string to 32-bit words (u32).
    /// # Examples
    /// ```
    /// use aes_frast::misc::hex;
    /// let word: u32 = hex("0A0B0C0D");
    /// assert_eq!(word, 0x0D0C0B0A);
    /// assert_eq!(word, u32::from_le_bytes([0x0A, 0x0B, 0x0C, 0x0D]));
    /// ```
    /// # Panics
    /// This function panics if `s` is not a valid hexadecimal integer in the `u32` range.
    #[inline(always)]
    pub fn hex(s: &str) -> u32 {
        ::std::primitive::u32::from_str_radix(s, 16)
            .unwrap()
            .to_be()
    }
}

pub use crate::aes_core::BLOCKSIZE_IN_BYTES;
pub use crate::aes_core::KEY_BYTES_128BIT;
pub use crate::aes_core::KEY_BYTES_192BIT;
pub use crate::aes_core::KEY_BYTES_256BIT;
pub use crate::aes_core::N_SUBKEYS_128BIT;
pub use crate::aes_core::N_SUBKEYS_192BIT;
pub use crate::aes_core::N_SUBKEYS_256BIT;