[PPML] Implement verifyQuote in QuoteVerifier.scala

scala/ppml/src/main/scala/com/intel/analytics/bigdl/ppml/attestation/QuoteVerifier.scala

@@ -16,11 +16,25 @@
 
 package com.intel.analytics.bigdl.ppml.attestation
 
+import org.apache.logging.log4j.LogManager
 
 abstract class QuoteVerifier {
 
+  val logger = LogManager.getLogger(getClass)
+
   def verifyQuote(quote: Array[Byte]): Int = {
-    1
+
+    try {
+      val verifyQuoteResult = Attestation.sdkVerifyQuote(quote)
+      return verifyQuoteResult
+    } catch {
+      case e: Exception =>
+        logger.error(s"Failed to verify quote, ${e}")
+        throw new AttestationRuntimeException("Failed " +
+          "to verify quote", e)
+    }
+
+    throw new AttestationRuntimeException("Unexpected workflow when verifying Quote!")
   }
 
   def verifyQuote(quote: Array[Byte], policy: Policy): Int = {