Struct HMacCtx 

pub struct HMacCtx(/* private fields */);

A context object used to perform MAC operations.

Implementations

impl HMacCtx

pub fn new() -> Result<Self, ErrorStack>

Creates a new context.

This corresponds to HMAC_CTX_new.

Methods from Deref<Target = HMacCtxRef>

pub fn reset(&mut self) -> Result<(), ErrorStack>

Clears an existing HMAC_CTX and associated resources.

This will make it suitable for new computations as if it was newly created with HMAC_CTX_new().

This corresponds to HMAC_CTX_reset.

pub fn copy(&mut self, src: &HMacCtxRef) -> Result<(), ErrorStack>

This corresponds to HMAC_CTX_copy.

pub fn init_ex( &mut self, key: Option<&[u8]>, md: &MdRef, ) -> Result<(), ErrorStack>

This corresponds to HMAC_Init_ex.

pub fn md(&self) -> Option<&MdRef>

This corresponds to HMAC_CTX_get_md.

pub fn size(&self) -> usize

Returns the size, in bytes, of the HMAC that will be produced by ctx.

On entry, ctx must have been setup with init_ex

This corresponds to HMAC_size.

pub fn hmac_update(&mut self, data: &[u8]) -> Result<(), ErrorStack>

Add data bytes to the MAC input.

This corresponds to HMAC_Update.

pub fn hmac_final(&mut self, out: &mut [u8]) -> Result<usize, ErrorStack>

Place the message authentication code in out.

This corresponds to HMAC_Update.

pub fn hmac_final_to_vec( &mut self, out: &mut Vec<u8>, ) -> Result<usize, ErrorStack>

Like Self::hmac_final but appends the signature to a Vec.

Trait Implementations

impl AsRef<HMacCtxRef> for HMacCtx

fn as_ref(&self) -> &HMacCtxRef

Converts this type into a shared reference of the (usually inferred) input type.

impl Borrow<HMacCtxRef> for HMacCtx

fn borrow(&self) -> &HMacCtxRef

Immutably borrows from an owned value.

impl Deref for HMacCtx

type Target = HMacCtxRef

The resulting type after dereferencing.

fn deref(&self) -> &HMacCtxRef

Dereferences the value.

impl DerefMut for HMacCtx

fn deref_mut(&mut self) -> &mut HMacCtxRef

Mutably dereferences the value.

impl Drop for HMacCtx

fn drop(&mut self)

Executes the destructor for this type.

impl ForeignType for HMacCtx

type CType = HMAC_CTX

The raw C type.

type Ref = HMacCtxRef

The type representing a reference to this type.

unsafe fn from_ptr(ptr: *mut HMAC_CTX) -> HMacCtx

Constructs an instance of this type from its raw type.

fn as_ptr(&self) -> *mut HMAC_CTX

Returns a raw pointer to the wrapped value.

impl Send for HMacCtx

impl Sync for HMacCtx