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• oidc4s-circe_3
• 0.13.1
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• JoseHeaderCirceDecoder.scala

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me.wojnowski.oidc4s.json.circe.JoseHeaderCirceDecoder.scala Maven / Gradle / Ivy

package me.wojnowski.oidc4s.json.circe

import io.circe.Decoder
import me.wojnowski.oidc4s.Algorithm
import me.wojnowski.oidc4s.IdTokenVerifier.Error.UnsupportedAlgorithm
import me.wojnowski.oidc4s.JoseHeader
import me.wojnowski.oidc4s.json.JsonSupport

trait JoseHeaderCirceDecoder {

  private implicit val jwtAlgorithmCirceDecoder: Decoder[Algorithm] =
    Decoder[String].emap { shortName =>
      Algorithm.findByShortName(shortName).toRight(UnsupportedAlgorithm(shortName).toRawError)
    }

  protected implicit val joseHeaderCirceDecoder: Decoder[JoseHeader] =
    Decoder.forProduct2[JoseHeader, String, Algorithm]("kid", "alg")(JoseHeader.apply)

}