pub fn verifier_from_jwk(&self, jwk: &Jwk) -> Result<EcdsaJwsVerifier, JoseError> {
        (|| -> anyhow::Result<EcdsaJwsVerifier> {
            let curve = self.curve();

            match jwk.key_type() {
                val if val == "EC" => {}
                val => bail!("A parameter kty must be EC: {}", val),
            }
            match jwk.key_use() {
                Some(val) if val == "sig" => {}
                None => {}
                Some(val) => bail!("A parameter use must be sig: {}", val),
            }
            if !jwk.is_for_key_operation("verify") {
                bail!("A parameter key_ops must contains verify.");
            }
            match jwk.algorithm() {
                Some(val) if val == self.name() => {}
                None => {}
                Some(val) => bail!("A parameter alg must be {} but {}", self.name(), val),
            }
            match jwk.parameter("crv") {
                Some(Value::String(val)) if val == curve.name() => {}
                Some(Value::String(val)) => {
                    bail!("A parameter crv must be {} but {}", curve.name(), val)
                }
                Some(_) => bail!("A parameter crv must be a string."),
                None => bail!("A parameter crv is required."),
            }
            let x = match jwk.parameter("x") {
                Some(Value::String(val)) => base64::decode_config(val, base64::URL_SAFE_NO_PAD)?,
                Some(_) => bail!("A parameter x must be a string."),
                None => bail!("A parameter x is required."),
            };
            let y = match jwk.parameter("y") {
                Some(Value::String(val)) => base64::decode_config(val, base64::URL_SAFE_NO_PAD)?,
                Some(_) => bail!("A parameter y must be a string."),
                None => bail!("A parameter y is required."),
            };

            let mut vec = Vec::with_capacity(1 + x.len() + y.len());
            vec.push(0x04);
            vec.extend_from_slice(&x);
            vec.extend_from_slice(&y);

            let pkcs8 = EcKeyPair::to_pkcs8(&vec, true, self.curve());
            let public_key = PKey::public_key_from_der(&pkcs8)?;
            let key_id = jwk.key_id().map(|val| val.to_string());

            Ok(EcdsaJwsVerifier {
                algorithm: self.clone(),
                public_key,
                key_id,
            })
        })()
        .map_err(|err| JoseError::InvalidKeyFormat(err))
    }
/// Return a verifier from a public key that is formatted by a JWK of EC type.
///
/// # Arguments
/// * `jwk` - A public key that is formatted by a JWK of EC type.
Return a verifier from a public key that is formatted by a JWK of EC type.
Return a verifier from a public key that is formatted by a JWK of EC type .
pub fn verifier_from_jwk(&self, jwk: &Jwk) -> Result<EcdsaJwsVerifier, JoseError> {
        (|| -> anyhow::Result<EcdsaJwsVerifier> {
            let curve = self.curve();
            match jwk.key_type() {
                val if val == "EC" => {}
                val => bail!("A parameter kty must be EC: {}", val),
            }
            match jwk.key_use() {
                Some(val) if val == "sig" => {}
                None => {}
                Some(val) => bail!("A parameter use must be sig: {}", val),
            }
            if !jwk.is_for_key_operation("verify") {
                bail!("A parameter key_ops must contains verify.");
            }
            match jwk.algorithm() {
                Some(val) if val == self.name() => {}
                None => {}
                Some(val) => bail!("A parameter alg must be {} but {}", self.name(), val),
            }
            match jwk.parameter("crv") {
                Some(Value::String(val)) if val == curve.name() => {}
                Some(Value::String(val)) => {
                    bail!("A parameter crv must be {} but {}", curve.name(), val)
                }
                Some(_) => bail!("A parameter crv must be a string."),
                None => bail!("A parameter crv is required."),
            }
            let x = match jwk.parameter("x") {
                Some(Value::String(val)) => base64::decode_config(val, base64::URL_SAFE_NO_PAD)?,
                Some(_) => bail!("A parameter x must be a string."),
                None => bail!("A parameter x is required."),
            };
            let y = match jwk.parameter("y") {
                Some(Value::String(val)) => base64::decode_config(val, base64::URL_SAFE_NO_PAD)?,
                Some(_) => bail!("A parameter y must be a string."),
                None => bail!("A parameter y is required."),
            };
            let mut vec = Vec::with_capacity(1 + x.len() + y.len());
            vec.push(0x04);
            vec.extend_from_slice(&x);
            vec.extend_from_slice(&y);
            let pkcs8 = EcKeyPair::to_pkcs8(&vec, true, self.curve());
            let public_key = PKey::public_key_from_der(&pkcs8)?;
            let key_id = jwk.key_id().map(|val| val.to_string());
            Ok(EcdsaJwsVerifier {
                algorithm: self.clone(),
                public_key,
                key_id,
            })
        })()
        .map_err(|err| JoseError::InvalidKeyFormat(err))
    }
pub fn verifier_from_jwk ( & self , jwk : & Jwk ) -> Result < EcdsaJwsVerifier , JoseError > { ( | | -> anyhow :: Result < EcdsaJwsVerifier > { let curve = self . curve ( ) ; match jwk . key_type ( ) { val if val == " " => { } val => bail ! ( " " val ) , } match jwk . key_use ( ) { Some ( val ) if val == " " => { } None => { } Some ( val ) => bail ! ( " " val ) , } if ! jwk . is_for_key_operation ( " " ) { bail ! ( " " ) ; } match jwk . algorithm ( ) { Some ( val ) if val == self . name ( ) => { } None => { } Some ( val ) => bail ! ( " " self name ( ) val ) , } match jwk . parameter ( " " ) { Some ( Value :: String ( val ) ) if val == curve . name ( ) => { } Some ( Value :: String ( val ) ) => { bail ! ( " " curve name ( ) val ) } Some ( _ ) => bail ! ( " " ) , None => bail ! ( " " ) , } let x = match jwk . parameter ( " " ) { Some ( Value :: String ( val ) ) => base64 :: decode_config ( val , base64 :: URL_SAFE_NO_PAD ) ? , Some ( _ ) => bail ! ( " " ) , None => bail ! ( " " ) , } ; let y = match jwk . parameter ( " " ) { Some ( Value :: String ( val ) ) => base64 :: decode_config ( val , base64 :: URL_SAFE_NO_PAD ) ? , Some ( _ ) => bail ! ( " " ) , None => bail ! ( " " ) , } ; let mut vec = Vec :: with_capacity ( 1 + x . len ( ) + y . len ( ) ) ; vec . push ( 0x04 ) ; vec . extend_from_slice ( & x ) ; vec . extend_from_slice ( & y ) ; let pkcs8 = EcKeyPair :: to_pkcs8 ( & vec , true , self . curve ( ) ) ; let public_key = PKey :: public_key_from_der ( & pkcs8 ) ? ; let key_id = jwk . key_id ( ) . map ( | val | val . to_string ( ) ) ; Ok ( EcdsaJwsVerifier { algorithm : self . clone ( ) , public_key , key_id , } ) } ) ( ) . map_err ( | err | JoseError :: InvalidKeyFormat ( err ) ) }
Return a verifier from a public key that is formatted by a JWK of EC type.
Return a verifier from a public key that is formatted by a JWK of EC type .
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