Struct ecdsa::VerifyingKey

pub struct VerifyingKey<C> where
    C: PrimeCurve + ProjectiveArithmetic,  { /* private fields */ }

This is supported on crate feature verify only.

ECDSA verification key (i.e. public key). Generic over elliptic curves.

Requires an elliptic_curve::ProjectiveArithmetic impl on the curve, and a VerifyPrimitive impl on its associated AffinePoint type.

serde support

When the serde feature of this crate is enabled, it provides support for serializing and deserializing ECDSA signatures using the Serialize and Deserialize traits.

The serialization leverages the encoding used by the PublicKey type, which is a binary-oriented ASN.1 DER encoding.

Implementations

impl<C> VerifyingKey<C> where
    C: PrimeCurve + ProjectiveArithmetic,
    AffinePoint<C>: FromEncodedPoint<C> + ToEncodedPoint<C>,
    FieldSize<C>: ModulusSize, 

pub fn from_sec1_bytes(bytes: &[u8]) -> Result<Self>

Initialize VerifyingKey from a SEC1-encoded public key.

pub fn from_encoded_point(public_key: &EncodedPoint<C>) -> Result<Self>

Initialize VerifyingKey from an EncodedPoint.

pub fn to_encoded_point(&self, compress: bool) -> EncodedPoint<C>

Serialize this VerifyingKey as a SEC1 EncodedPoint, optionally applying point compression.

Trait Implementations

impl<C: Clone> Clone for VerifyingKey<C> where
    C: PrimeCurve + ProjectiveArithmetic, 

fn clone(&self) -> VerifyingKey<C>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<C: Debug> Debug for VerifyingKey<C> where
    C: PrimeCurve + ProjectiveArithmetic, 

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

Formats the value using the given formatter.

impl<C> DecodePublicKey for VerifyingKey<C> where
    C: PrimeCurve + AlgorithmParameters + ProjectiveArithmetic + PointCompression,
    AffinePoint<C>: FromEncodedPoint<C> + ToEncodedPoint<C>,
    FieldSize<C>: ModulusSize, 

This is supported on crate feature pkcs8 only.

fn from_public_key_der(bytes: &[u8]) -> Result<Self, Error>

Deserialize object from ASN.1 DER-encoded SubjectPublicKeyInfo (binary format).

fn from_public_key_doc(doc: &PublicKeyDocument) -> Result<Self, Error>

Deserialize SPKI public key from a PublicKeyDocument.

fn from_public_key_pem(s: &str) -> Result<Self, Error>

Deserialize PEM-encoded SubjectPublicKeyInfo.

impl<'de, C> Deserialize<'de> for VerifyingKey<C> where
    C: PrimeCurve + AlgorithmParameters + ProjectiveArithmetic + PointCompression,
    AffinePoint<C>: FromEncodedPoint<C> + ToEncodedPoint<C>,
    FieldSize<C>: ModulusSize, 

This is supported on crate features pem and serde only.

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where
    D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl<C, D> DigestVerifier<D, Signature<C>> for VerifyingKey<C> where
    C: PrimeCurve + ProjectiveArithmetic,
    D: Digest + FixedOutput<OutputSize = FieldSize<C>>,
    AffinePoint<C>: VerifyPrimitive<C>,
    Scalar<C>: Reduce<C::UInt>,
    SignatureSize<C>: ArrayLength<u8>, 

fn verify_digest(&self, msg_digest: D, signature: &Signature<C>) -> Result<()>

Verify the signature against the given Digest output.

impl<C> From<&'_ PublicKey<C>> for VerifyingKey<C> where
    C: PrimeCurve + ProjectiveArithmetic, 

fn from(public_key: &PublicKey<C>) -> VerifyingKey<C>

Performs the conversion.

impl<C> From<&'_ SigningKey<C>> for VerifyingKey<C> where
    C: PrimeCurve + ProjectiveArithmetic,
    Scalar<C>: Invert<Output = CtOption<Scalar<C>>> + Reduce<C::UInt> + SignPrimitive<C>,
    SignatureSize<C>: ArrayLength<u8>, 

fn from(signing_key: &SigningKey<C>) -> VerifyingKey<C>

Performs the conversion.

impl<C> From<&'_ VerifyingKey<C>> for EncodedPoint<C> where
    C: PrimeCurve + ProjectiveArithmetic + PointCompression,
    AffinePoint<C>: FromEncodedPoint<C> + ToEncodedPoint<C>,
    FieldSize<C>: ModulusSize, 

fn from(verifying_key: &VerifyingKey<C>) -> EncodedPoint<C>

Performs the conversion.

impl<C> From<&'_ VerifyingKey<C>> for PublicKey<C> where
    C: PrimeCurve + ProjectiveArithmetic, 

fn from(verifying_key: &VerifyingKey<C>) -> PublicKey<C>

Performs the conversion.

impl<C> From<PublicKey<C>> for VerifyingKey<C> where
    C: PrimeCurve + ProjectiveArithmetic, 

fn from(public_key: PublicKey<C>) -> VerifyingKey<C>

Performs the conversion.

impl<C> From<VerifyingKey<C>> for PublicKey<C> where
    C: PrimeCurve + ProjectiveArithmetic, 

fn from(verifying_key: VerifyingKey<C>) -> PublicKey<C>

Performs the conversion.

impl<C> FromStr for VerifyingKey<C> where
    C: PrimeCurve + AlgorithmParameters + ProjectiveArithmetic + PointCompression,
    AffinePoint<C>: FromEncodedPoint<C> + ToEncodedPoint<C>,
    FieldSize<C>: ModulusSize, 

This is supported on crate feature pem only.

type Err = Error

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self>

Parses a string s to return a value of this type.

impl<C> Ord for VerifyingKey<C> where
    C: PrimeCurve + ProjectiveArithmetic,
    AffinePoint<C>: FromEncodedPoint<C> + ToEncodedPoint<C>,
    FieldSize<C>: ModulusSize, 

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl<C> PartialEq<VerifyingKey<C>> for VerifyingKey<C> where
    C: PrimeCurve + ProjectiveArithmetic, 

fn eq(&self, other: &Self) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl<C> PartialOrd<VerifyingKey<C>> for VerifyingKey<C> where
    C: PrimeCurve + ProjectiveArithmetic,
    AffinePoint<C>: FromEncodedPoint<C> + ToEncodedPoint<C>,
    FieldSize<C>: ModulusSize, 

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<C> Serialize for VerifyingKey<C> where
    C: PrimeCurve + AlgorithmParameters + ProjectiveArithmetic + PointCompression,
    AffinePoint<C>: FromEncodedPoint<C> + ToEncodedPoint<C>,
    FieldSize<C>: ModulusSize, 

This is supported on crate features pem and serde only.

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> where
    S: Serializer, 

Serialize this value into the given Serde serializer.

impl<C> TryFrom<&'_ [u8]> for VerifyingKey<C> where
    C: PrimeCurve + ProjectiveArithmetic,
    AffinePoint<C>: FromEncodedPoint<C> + ToEncodedPoint<C>,
    FieldSize<C>: ModulusSize, 

type Error = Error

The type returned in the event of a conversion error.

fn try_from(bytes: &[u8]) -> Result<Self>

Performs the conversion.

impl<C> TryFrom<SubjectPublicKeyInfo<'_>> for VerifyingKey<C> where
    C: PrimeCurve + AlgorithmParameters + ProjectiveArithmetic + PointCompression,
    AffinePoint<C>: FromEncodedPoint<C> + ToEncodedPoint<C>,
    FieldSize<C>: ModulusSize, 

This is supported on crate feature pkcs8 only.

type Error = Error

The type returned in the event of a conversion error.

fn try_from(spki: SubjectPublicKeyInfo<'_>) -> Result<Self>

Performs the conversion.

impl<C> Verifier<Signature<C>> for VerifyingKey<C> where
    C: PrimeCurve + ProjectiveArithmetic + DigestPrimitive,
    C::Digest: Digest + FixedOutput<OutputSize = FieldSize<C>>,
    AffinePoint<C>: VerifyPrimitive<C>,
    Scalar<C>: Reduce<C::UInt>,
    SignatureSize<C>: ArrayLength<u8>, 

fn verify(&self, msg: &[u8], signature: &Signature<C>) -> Result<()>

Use Self to verify that the provided signature for a given message bytestring is authentic.

impl<C> Copy for VerifyingKey<C> where
    C: PrimeCurve + ProjectiveArithmetic, 

impl<C> Eq for VerifyingKey<C> where
    C: PrimeCurve + ProjectiveArithmetic,