Struct secmem_alloc::zeroize::LibcZeroizer

pub struct LibcZeroizer;

This zeroizer uses volatile zeroization functions provided by libc. It should be fast but is only available on certain platforms.

In addition to the volatile write we place a compiler fence right next to the volatile write. This should not be necessary for secure zeroization since the volatile semantics guarenties our writes are not elided, and they can not be delayed since we are deallocating the memory after zeroization. The use of this fence is therefore only a precaution.

Trait Implementations

impl Clone for LibcZeroizer

fn clone(&self) -> LibcZeroizer

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for LibcZeroizer

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for LibcZeroizer

fn default() -> LibcZeroizer

Returns the “default value” for a type.

impl MemZeroizer for LibcZeroizer

unsafe fn zeroize_mem_blocks<const A: u8, const B: u8>(
    &self,
    ptr: *mut u8,
    len: usize
)

Zeroize the memory pointed to by ptr and of size len bytes.

unsafe fn zeroize_mem(&self, ptr: *mut u8, len: usize)

Zeroize the memory pointed to by ptr and of size len bytes. Shorthand for Self::zeroize_mem_blocks::<0, 0>.

impl Copy for LibcZeroizer