#[repr(C)]
pub struct SigningKey { pub public_key: PublicKey, pub(crate) k: Scalar, }
Expand description

A SigningKey is used to sign a BlindedToken and verify an UnblindedToken.

This is a server secret and should NEVER be revealed to the client.

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§public_key: PublicKey

A PublicKey showing a committment to this particular key

§k: Scalar

k is the actual key

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impl SigningKey

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pub fn random<T: Rng + CryptoRng>(rng: &mut T) -> Self

Generates a new random SigningKey using the provided random number generator.

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pub fn sign(&self, P: &BlindedToken) -> Result<SignedToken, TokenError>

Signs the provided BlindedToken

Returns None if the BlindedToken point is not valid.

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pub fn rederive_unblinded_token(&self, t: &TokenPreimage) -> UnblindedToken

Rederives an UnblindedToken via the token preimage of the provided UnblindedToken

W’ = T^k = H_1(t)^k

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pub fn to_bytes(&self) -> [u8; 32]

Convert this SigningKey to a byte array.

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fn bytes_length_error() -> TokenError

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pub fn from_bytes(bytes: &[u8]) -> Result<SigningKey, TokenError>

Construct a SigningKey from a slice of bytes.

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impl Clone for SigningKey

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fn clone(&self) -> SigningKey

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 Debug for SigningKey

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

Formats the value using the given formatter. Read more
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impl Drop for SigningKey

Overwrite signing key with null when it goes out of scope.

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fn drop(&mut self)

Executes the destructor for this type. Read more

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where 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 T
where T: ?Sized,

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fn borrow(&self) -> &T

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

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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

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fn from(t: T) -> T

Returns the argument unchanged.

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

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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 for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where 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 T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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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 T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

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

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fn vzip(self) -> V