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#![no_std]
#![cfg_attr(feature = "nightly", feature(i128_type))]
extern crate memsec;
mod cmpkey;
mod tempkey;
#[cfg(feature = "use_std")] mod seckey;
use core::mem;
use memsec::memzero;
pub use zerosafe::ZeroSafe;
pub use cmpkey::CmpKey;
pub use tempkey::*;
#[cfg(feature = "use_std")] pub use seckey::*;
pub fn zero<T: ?Sized + ZeroSafe>(t: &mut T) {
unsafe { memzero(t as *mut T as *mut u8, mem::size_of_val(t)) };
}
mod zerosafe {
pub unsafe trait ZeroSafe {}
macro_rules! impl_zerosafe {
( Type : $( $t:ty ),* ) => {
$(
unsafe impl ZeroSafe for $t {}
)*
};
( Generic : $( $t:ty ),* ) => {
$(
unsafe impl<T: ?Sized> ZeroSafe for $t {}
)*
};
( Array : $( $n:expr ),* ) => {
$(
unsafe impl<T: ZeroSafe> ZeroSafe for [T; $n] {}
)*
}
}
impl_zerosafe!{ Type:
usize, u8, u16, u32, u64,
isize, i8, i16, i32, i64,
char, str
}
#[cfg(feature = "nightly")]
impl_zerosafe!{ Type: u128, i128 }
impl_zerosafe!{ Generic: *const T, *mut T }
impl_zerosafe!{ Array:
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
64,
128, 256, 384, 512, 1024, 2048
}
unsafe impl<T: ZeroSafe> ZeroSafe for [T] {}
}