scala3-bcrypt is a scala friendly wrapper of Password4j
libraryDependencies += "com.github.roundrop" %% "scala3-bcrypt" % "0.1.0"
scala> import com.github.roundrop.bcrypt._
scala> "password".bcrypt()
val res0: scala.util.Try[String] = Success($2a$10$KH/WkRKeqCYJXbR2IcheRO9BORWMRw5SaY0YTRiIjb2u2uhsY/AH.)scala> "password".isBcrypted("$2a$10$KH/WkRKeqCYJXbR2IcheRO9BORWMRw5SaY0YTRiIjb2u2uhsY/AH.")
val res1: scala.util.Try[Boolean] = Success(true)By default, the salt generated internally, and developer does not need to generate and store salt. But if you decide that you need to use an existing salt, you can use bcrypt in the following way:
scala> val salt = "$2a$13$8K1p/a0dL1LXMIgoEDFrwO"
val salt: String = $2a$13$8K1p/a0dL1LXMIgoEDFrwO
scala> val hash = "my password".bcrypt(salt)
val hash: scala.util.Try[String] = Success($2a$13$U9hCpYnHwj2LwOy49rwQFeymCsLvvlvrIm.dNf9moxn0DxJPrQsIK)
scala> "my password".isBcrypted(hash.get)
val res2: scala.util.Try[Boolean] = Success(true)