Struct secmem_alloc::zeroize::VolatileWriteZeroizer

pub struct VolatileWriteZeroizer;

This zeroizer uses a volatile write per byte. This zeroization technique is similar to the zeroize crate, available for all target platforms on stable, but extremely slow.

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 VolatileWriteZeroizer

fn clone(&self) -> VolatileWriteZeroizer

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for VolatileWriteZeroizer

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

Formats the value using the given formatter.

impl Default for VolatileWriteZeroizer

fn default() -> VolatileWriteZeroizer

Returns the “default value” for a type.

impl MemZeroizer for VolatileWriteZeroizer

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 VolatileWriteZeroizer