[ATL-1342] feat(pollux): initialise VC JWT (#42)

pollux/vc-jwt/.gitignore

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+# macOS
+.DS_Store
+
+# sbt specific
+dist/*
+target/
+lib_managed/
+src_managed/
+project/boot/
+project/plugins/project/
+project/local-plugins.sbt
+.history
+.ensime
+.ensime_cache/
+.sbt-scripted/
+local.sbt
+
+# Bloop
+.bsp
+
+# VS Code
+.vscode/
+
+# Metals
+.bloop/
+.metals/
+metals.sbt
+
+# IDEA
+.idea
+.idea_modules
+/.worksheet/

pollux/vc-jwt/.scalafmt.conf

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+version = 3.5.8
+runner.dialect = scala3
+
+maxColumn = 120

pollux/vc-jwt/README.md

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+## sbt project compiled with Scala 3
+
+### Usage
+
+This is a normal sbt project. You can compile code with `sbt compile`, run it with `sbt run`, and `sbt console` will start a Scala 3 REPL.
+
+For more information on the sbt-dotty plugin, see the
+[scala3-example-project](https://github.com/scala/scala3-example-project/blob/main/README.md).

pollux/vc-jwt/build.sbt

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+import Dependencies._
+
+ThisBuild / version := "0.1.0-SNAPSHOT"
+ThisBuild / scalaVersion := "3.1.3"
+ThisBuild / organization := "io.iohk.atala"
+
+lazy val root = project
+  .in(file("."))
+  .settings(
+    name := "pollux-vc-jwt",
+    libraryDependencies ++= polluxVcJwtDependencies
+  )

pollux/vc-jwt/project/Dependencies.scala

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+import sbt._
+
+object Dependencies {
+  object Versions {
+    val circeVersion = "0.14.3"
+    val jwtCirceVersion = "9.1.1"
+  }
+
+  private lazy val coreJwtCirce = "io.circe" %% "circe-core" % Versions.circeVersion
+  private lazy val genericJwtCirce = "io.circe" %% "circe-generic" % Versions.circeVersion
+  private lazy val parserJwtCirce = "io.circe" %% "circe-parser" % Versions.circeVersion
+
+  private lazy val jwtCirce = "com.github.jwt-scala" %% "jwt-circe" % Versions.jwtCirceVersion
+
+  private lazy val test = "org.scalameta" %% "munit" % "0.7.29" % Test
+
+  // Dependency Modules
+  private lazy val circeDependencies: Seq[ModuleID] = Seq(coreJwtCirce, genericJwtCirce, parserJwtCirce)
+  private lazy val baseDependencies: Seq[ModuleID] = circeDependencies :+ jwtCirce :+ test
+
+  // Project Dependencies
+  lazy val polluxVcJwtDependencies: Seq[ModuleID] = baseDependencies
+}

pollux/vc-jwt/project/build.properties

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+sbt.version=1.7.1

pollux/vc-jwt/src/main/scala/io/iohk/atala/pollux/vc/jwt/Main.scala

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+package io.iohk.atala.pollux.vc.jwt
+import io.circe.*
+import pdi.jwt.JwtClaim
+import pdi.jwt.{JwtAlgorithm, JwtCirce}
+
+import java.security.*
+import java.security.spec.*
+import java.time.Instant
+
+@main def jwtDemo(): Unit =
+  val keyGen = KeyPairGenerator.getInstance("EC")
+  val ecSpec = ECGenParameterSpec("secp256r1")
+  keyGen.initialize(ecSpec, SecureRandom())
+  val keyPair = keyGen.generateKeyPair()
+  val privateKey = keyPair.getPrivate
+  val publicKey = keyPair.getPublic
+
+  val Right(claimJson) = jawn.parse(s"""{"expires":${Instant.now.getEpochSecond}}""")
+
+  val jwt = JwtCirce.encode(claimJson, privateKey, JwtAlgorithm.ES256)
+
+  println(jwt)
+
+  println(s"Is Valid: ${JwtCirce.isValid(jwt, publicKey)}")

pollux/vc-jwt/src/test/scala/io/iohk/atala/pollux/vc/jwt/MySuite.scala

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+package io.iohk.atala.pollux.vc.jwt
+
+class MySuite extends munit.FunSuite {
+  test("example test that succeeds") {
+    val obtained = 42
+    val expected = 42
+    assertEquals(obtained, expected)
+  }
+}