pub fn verifier_from_jwk(&self, jwk: &Jwk) -> Result<HmacJwsVerifier, JoseError> {
        (|| -> anyhow::Result<HmacJwsVerifier> {
            match jwk.key_type() {
                val if val == "oct" => {}
                val => bail!("A parameter kty must be oct: {}", 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),
            }

            let k = match jwk.parameter("k") {
                Some(Value::String(val)) => base64::decode_config(val, base64::URL_SAFE_NO_PAD)?,
                Some(val) => bail!("A parameter k must be string type but {:?}", val),
                None => bail!("A parameter k is required."),
            };

            let min_key_len = self.hash_algorithm().output_len();
            if k.len() < min_key_len {
                bail!(
                    "Secret key size must be larger than or equal to {}: {}",
                    min_key_len,
                    k.len()
                );
            }

            let private_key = PKey::hmac(&k)?;
            let key_id = jwk.key_id().map(|val| val.to_string());

            Ok(HmacJwsVerifier {
                algorithm: self.clone(),
                private_key,
                key_id,
            })
        })()
        .map_err(|err| JoseError::InvalidKeyFormat(err))
    }
/// Return a verifier from a secret key that is formatted by a JWK of oct type.
///
/// # Arguments
/// * `jwk` - A secret key that is formatted by a JWK of oct type.
Return a verifier from a secret key that is formatted by a JWK of oct type.
Return a verifier from a secret key that is formatted by a JWK of oct type .
pub fn verifier_from_jwk(&self, jwk: &Jwk) -> Result<HmacJwsVerifier, JoseError> {
        (|| -> anyhow::Result<HmacJwsVerifier> {
            match jwk.key_type() {
                val if val == "oct" => {}
                val => bail!("A parameter kty must be oct: {}", 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),
            }
            let k = match jwk.parameter("k") {
                Some(Value::String(val)) => base64::decode_config(val, base64::URL_SAFE_NO_PAD)?,
                Some(val) => bail!("A parameter k must be string type but {:?}", val),
                None => bail!("A parameter k is required."),
            };
            let min_key_len = self.hash_algorithm().output_len();
            if k.len() < min_key_len {
                bail!(
                    "Secret key size must be larger than or equal to {}: {}",
                    min_key_len,
                    k.len()
                );
            }
            let private_key = PKey::hmac(&k)?;
            let key_id = jwk.key_id().map(|val| val.to_string());
            Ok(HmacJwsVerifier {
                algorithm: self.clone(),
                private_key,
                key_id,
            })
        })()
        .map_err(|err| JoseError::InvalidKeyFormat(err))
    }
pub fn verifier_from_jwk ( & self , jwk : & Jwk ) -> Result < HmacJwsVerifier , JoseError > { ( | | -> anyhow :: Result < HmacJwsVerifier > { 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 ) , } let k = match jwk . parameter ( " " ) { Some ( Value :: String ( val ) ) => base64 :: decode_config ( val , base64 :: URL_SAFE_NO_PAD ) ? , Some ( val ) => bail ! ( " " val ) , None => bail ! ( " " ) , } ; let min_key_len = self . hash_algorithm ( ) . output_len ( ) ; if k . len ( ) < min_key_len { bail ! ( " " min_key_len k len ( ) ) ; } let private_key = PKey :: hmac ( & k ) ? ; let key_id = jwk . key_id ( ) . map ( | val | val . to_string ( ) ) ; Ok ( HmacJwsVerifier { algorithm : self . clone ( ) , private_key , key_id , } ) } ) ( ) . map_err ( | err | JoseError :: InvalidKeyFormat ( err ) ) }
Return a verifier from a secret key that is formatted by a JWK of oct type.
Return a verifier from a secret key that is formatted by a JWK of oct type .
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