Struct secmem_alloc::zeroize::VolatileMemsetZeroizer

pub struct VolatileMemsetZeroizer;

This zeroizer uses the volatile memset intrinsic which does not yet have a stable counterpart. It should be very fast, but requires nightly.

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 VolatileMemsetZeroizer

fn clone(&self) -> VolatileMemsetZeroizer

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for VolatileMemsetZeroizer

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

Formats the value using the given formatter.

impl Default for VolatileMemsetZeroizer

fn default() -> VolatileMemsetZeroizer

Returns the “default value” for a type.

impl MemZeroizer for VolatileMemsetZeroizer

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 VolatileMemsetZeroizer