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JwtPlatform.scala
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JwtPlatform.scala
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/*
* Copyright 2021 Arman Bilge
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package gcp4s.auth
import cats.MonadThrow
import cats.effect.kernel.Clock
import cats.syntax.all.*
import scodec.bits.ByteVector
import java.security.KeyFactory
import java.security.spec.PKCS8EncodedKeySpec
import java.security.Signature
abstract private[auth] class JwtCompanionPlatform:
given [F[_]: Clock](using F: MonadThrow[F]): Jwt[F] =
new UnsealedJwt:
def sign(data: ByteVector, privateKey: ByteVector): F[ByteVector] =
F.catchNonFatal {
val keyFactory = KeyFactory.getInstance("RSA")
val spec = new PKCS8EncodedKeySpec(privateKey.toArray)
keyFactory.generatePrivate(spec)
val signer = Signature.getInstance("SHA256withRSA")
signer.initSign(keyFactory.generatePrivate(spec))
signer.update(data.toByteBuffer)
ByteVector.view(signer.sign)
}