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P256

defuse_crypto::p256

Struct P256 

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pub struct P256;
Expand description

P256 (a.k.a. secp256r1) Elliptic Curve Digital Signature Algorithm

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impl Curve for P256

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fn verify( public_key: &Self::PublicKey, prehash: &[u8], signature: &Self::Signature, ) -> bool

Verify P256 signature over 32-byte prehash (i.e. output of cryptographic hash function) for given public key.

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type PublicKey = VerifyingKey<NistP256>

Public key
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type Signature = Signature<NistP256>

Signature
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impl Signer<P256> for SigningKey

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fn sign( &self, prehash: &[u8], ) -> impl Future<Output = Result<<P256 as Curve>::Signature, Self::Error>> + Send

Sign 32-byte prehash (i.e. output of cryptographic hash function).

If given prehash is of different length, an error will be returned.

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type Error = Error

An error that can occur during signing.
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fn public_key(&self) -> <P256 as Curve>::PublicKey

Get the public key of the signer.
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impl TypedCurve for P256

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const CURVE_TYPE: &str = "p256"

Used as prefix: <CURVE>:...
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fn to_base58(bytes: impl AsRef<[u8]>) -> String

Encodes bytes to string as <CURVE>:<base58>
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fn parse_base58<const N: usize>( s: impl AsRef<str>, ) -> Result<[u8; N], ParseCurveError>

Decodes bytes from string as <CURVE>:<base58>

Auto Trait Implementations§

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impl Freeze for P256

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impl RefUnwindSafe for P256

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impl Send for P256

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impl Sync for P256

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impl Unpin for P256

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impl UnsafeUnpin for P256

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impl UnwindSafe for P256

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<S> SignerExt for S

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fn public_key<C: Curve>(&self) -> C::PublicKey
where Self: Signer<C>,

Get the public key of the signer on a curve C. Read more
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fn sign<C: Curve>( &self, msg: &[u8], ) -> impl Future<Output = Result<C::Signature, Self::Error>> + Send
where Self: Signer<C>,

Sign a given message and return a signature. Read more
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fn sign_recoverable<C: RecoverableCurve>( &self, msg: &[u8], ) -> impl Future<Output = Result<(C::Signature, C::RecoveryId), Self::Error>> + Send
where Self: RecoverableSigner<C>,

Sign a given message and return a signature along with recovery id. Read more
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fn cache_public_key<C: Curve>(self) -> CachePublicKey<C, Self>
where Self: Signer<C> + Sized,

Calculate .public_key() and cache its value for further invocations. 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.