Signature validation tool: fix scalastyle and scalafmt

Author: Nicolas Tallar

src/main/scala/io/iohk/ethereum/crypto/SignatureValidator.scala

@@ -8,6 +8,7 @@ import io.iohk.ethereum.utils.ByteStringUtils
 
 import scala.util.{Failure, Success, Try}
 
+// scalastyle:off regex
 object SignatureValidator extends App with SecureRandomBuilder with JsonMethodsImplicits {
 
   args match {
@@ -19,16 +20,21 @@ object SignatureValidator extends App with SecureRandomBuilder with JsonMethodsI
         signature.flatMap(_.publicKey(msg))
       } match {
         case Failure(exception) =>
-          System.err.println(s"Can't recover public key from signature [$sig] and msg [$msgHash]: ERROR: ${exception.getMessage}")
+          System.err.println(
+            s"Can't recover public key from signature [$sig] and msg [$msgHash]: ERROR: ${exception.getMessage}"
+          )
           sys.exit(1)
         case Success(recoveredPk) =>
           val publicKey = ByteStringUtils.string2hash(pk)
           recoveredPk match {
             case Some(pk) =>
-              if(pk == publicKey) {
-                System.err.println(s"Recovered public key [${ByteStringUtils.hash2string(pk)}] is the same as given one")
+              if (pk == publicKey) {
+                System.err.println(
+                  s"Recovered public key [${ByteStringUtils.hash2string(pk)}] is the same as given one"
+                )
               } else {
-                System.err.println(s"Recovered public key [${ByteStringUtils.hash2string(pk)}] is different than given [${ByteStringUtils.hash2string(publicKey)}]")
+                System.err.println(s"Recovered public key [${ByteStringUtils
+                  .hash2string(pk)}] is different than given [${ByteStringUtils.hash2string(publicKey)}]")
                 sys.exit(1)
               }
             case None =>
@@ -43,7 +49,9 @@ object SignatureValidator extends App with SecureRandomBuilder with JsonMethodsI
       val hashStr = ByteStringUtils.hash2string(ByteString(hash))
       val signature = ECDSASignature.sign(hash, keyPair)
       val sigStr = ByteStringUtils.hash2string(signature.toBytes)
-      System.err.println(s"Bad Input. Example usage: [signature-validator publicKey signature message_hash]. Example: [signature-validator $pkStr $sigStr $hashStr]")
+      System.err.println(
+        s"Bad Input. Example usage: [signature-validator publicKey signature message_hash]. Example: [signature-validator $pkStr $sigStr $hashStr]"
+      )
       sys.exit(1)
   }
 }