Struct diem_crypto::hkdf::Hkdf

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pub struct Hkdf<D>where
    D: Update + BlockInput + FixedOutput + Reset + Default + Clone,
    D::BlockSize: ArrayLength<u8>,
    D::OutputSize: ArrayLength<u8> + IsGreaterOrEqual<U32, Output = True>,{ /* private fields */ }
Expand description

Structure representing the HKDF, capable of HKDF-Extract and HKDF-Expand operations, as defined in RFC 5869.

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impl<D> Hkdf<D>where D: Update + BlockInput + FixedOutput + Reset + Default + Clone, D::BlockSize: ArrayLength<u8> + Clone, D::OutputSize: ArrayLength<u8> + IsGreaterOrEqual<U32, Output = True>,

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pub fn extract(salt: Option<&[u8]>, ikm: &[u8]) -> Result<Vec<u8>, HkdfError>

The RFC5869 HKDF-Extract operation.

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pub fn expand( prk: &[u8], info: Option<&[u8]>, length: usize ) -> Result<Vec<u8>, HkdfError>

The RFC5869 HKDF-Expand operation.

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pub fn extract_then_expand( salt: Option<&[u8]>, ikm: &[u8], info: Option<&[u8]>, length: usize ) -> Result<Vec<u8>, HkdfError>

HKDF Extract then Expand operation as a single step.

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pub fn extract_then_expand_no_ikm( salt: Option<&[u8]>, info: Option<&[u8]>, length: usize ) -> Result<Vec<u8>, HkdfError>

CAUTION: This is not recommended because it does not take an ikm (seed) as an input and thus, it is not fully compliant with the HKDF RFC (which always expects a non-zero ikm). Please use extract_then_expand instead, unless you know what you are doing.

This api is currently required by the Noise protocol HKDF specs.

HKDF Extract then Expand operation as a single step, but without an ikm input.

Trait Implementations§

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impl<D> Clone for Hkdf<D>where D: Update + BlockInput + FixedOutput + Reset + Default + Clone + Clone, D::BlockSize: ArrayLength<u8>, D::OutputSize: ArrayLength<u8> + IsGreaterOrEqual<U32, Output = True>,

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fn clone(&self) -> Hkdf<D>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<D> Debug for Hkdf<D>where D: Update + BlockInput + FixedOutput + Reset + Default + Clone + Debug, D::BlockSize: ArrayLength<u8>, D::OutputSize: ArrayLength<u8> + IsGreaterOrEqual<U32, Output = True>,

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<D> RefUnwindSafe for Hkdf<D>where D: RefUnwindSafe,

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impl<D> Send for Hkdf<D>where D: Send,

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impl<D> Sync for Hkdf<D>where D: Sync,

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impl<D> Unpin for Hkdf<D>where D: Unpin,

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impl<D> UnwindSafe for Hkdf<D>where D: UnwindSafe,

Blanket Implementations§

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impl<T> Any for Twhere T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere U: From<T>,

const: unstable · source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Same<T> for T

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type Output = T

Should always be Self
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impl<T> ToOwned for Twhere T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for Twhere V: MultiLane<T>,

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fn vzip(self) -> V