diff --git a/src/main/java/com/palnet/comn/collection/AuthCollection.java b/src/main/java/com/palnet/comn/collection/AuthCollection.java
index 3017568..7523b61 100644
--- a/src/main/java/com/palnet/comn/collection/AuthCollection.java
+++ b/src/main/java/com/palnet/comn/collection/AuthCollection.java
@@ -9,9 +9,9 @@ import java.util.*;
 @Slf4j
 public class AuthCollection {
 
-	private Logger logger = LoggerFactory.getLogger(getClass());
+	private final Logger logger = LoggerFactory.getLogger(getClass());
 	
-	private static Set<String> authkeyList = new HashSet<>();
+	private static final Set<String> authkeyList = new HashSet<>();
 	
 	public void reloadAuthkey() {
 		// 인증키 하드코딩 처리
@@ -25,14 +25,25 @@ public class AuthCollection {
 	public boolean checkAuthkey(String authKey) {
 		boolean result = false;
 
-		for (Iterator<String> iterator = authkeyList.iterator(); iterator.hasNext();) {
+		Iterator<String> iterator = authkeyList.iterator();
+
+		while(iterator.hasNext()){
 			String item = iterator.next();
 
-			if(authKey.equals(item)) {
+			if(authKey.equals(item)){
 				result = true;
+				break;
 			}
 		}
-		
+
+//		for (Iterator<String> iterator = authkeyList.iterator(); iterator.hasNext();) {
+//			String item = iterator.next();
+//
+//			if(authKey.equals(item)) {
+//				result = true;
+//			}
+//		}
+
 		return result;
 	}
 	
diff --git a/src/main/java/com/palnet/server/encrptn/kisa/KISA_SEED_CBC.java b/src/main/java/com/palnet/server/encrptn/kisa/KISA_SEED_CBC.java
index 95cba27..0ae0444 100644
--- a/src/main/java/com/palnet/server/encrptn/kisa/KISA_SEED_CBC.java
+++ b/src/main/java/com/palnet/server/encrptn/kisa/KISA_SEED_CBC.java
@@ -1190,7 +1190,7 @@ public class KISA_SEED_CBC {
 		
 		int[] outbuf = new int[process_blockLeng/4];
 		
-		for(j=0; j<PLAINTEXT_LENGTH-process_blockLeng; )
+		for(j=0; j<PLAINTEXT_LENGTH-process_blockLeng; j+= process_blockLeng)
 		{			
 			System.arraycopy(pbData, j, newpbszPlainText, 0, process_blockLeng);
 			data = chartoint32_for_SEED_CBC(newpbszPlainText, process_blockLeng);			
@@ -1275,7 +1275,7 @@ public class KISA_SEED_CBC {
 		byte []pbszPlainText = new byte[nCipherTextLen];
 		
 		
-		for(j=0; j<nCipherTextLen - process_blockLeng; )
+		for(j=0; j<nCipherTextLen - process_blockLeng; j+= process_blockLeng)
 		{
 			System.arraycopy(message, j, newpbszCipherText, 0, process_blockLeng);
 			data = chartoint32_for_SEED_CBC(newpbszCipherText, process_blockLeng);	
@@ -1377,7 +1377,7 @@ public class KISA_SEED_CBC {
 		outbuf = new int[process_blockLeng/4];
 		pbszPlainText = new byte[process_blockLeng];
 		
-		for(j=0; j<PLAINTEXT_LENGTH-process_blockLeng; )
+		for(j=0; j<PLAINTEXT_LENGTH-process_blockLeng; j+= process_blockLeng)
 		{			
 			System.arraycopy(pbData1, j, newpbszPlainText, 0, process_blockLeng);
 			data = chartoint32_for_SEED_CBC(newpbszPlainText, process_blockLeng);
@@ -1466,7 +1466,7 @@ public class KISA_SEED_CBC {
 		pbszPlainText = new byte[nCipherTextLen];
 		
 		
-		for(j=0; j<nCipherTextLen - process_blockLeng; )
+		for(j=0; j<nCipherTextLen - process_blockLeng; j+= process_blockLeng)
 		{
 			System.arraycopy(message, j, newpbszCipherText, 0, process_blockLeng);
 			data = chartoint32_for_SEED_CBC(newpbszCipherText, process_blockLeng);	
@@ -1553,7 +1553,7 @@ public class KISA_SEED_CBC {
 		outbuf = new int[process_blockLeng/4];
 		pbszPlainText = new byte[process_blockLeng];
 		
-		for(j=0; j<PLAINTEXT_LENGTH-process_blockLeng; )
+		for(j=0; j<PLAINTEXT_LENGTH-process_blockLeng; j+= process_blockLeng)
 		{			
 			System.arraycopy(pbData2, j, newpbszPlainText, 0, process_blockLeng);
 			data = chartoint32_for_SEED_CBC(newpbszPlainText, process_blockLeng);
@@ -1641,7 +1641,7 @@ public class KISA_SEED_CBC {
 		pbszPlainText = new byte[nCipherTextLen];
 		
 		
-		for(j=0; j<nCipherTextLen - process_blockLeng; )
+		for(j=0; j<nCipherTextLen - process_blockLeng; j+= process_blockLeng)
 		{
 			System.arraycopy(message, j, newpbszCipherText, 0, process_blockLeng);
 			data = chartoint32_for_SEED_CBC(newpbszCipherText, process_blockLeng);	
@@ -1730,7 +1730,7 @@ public class KISA_SEED_CBC {
 		outbuf = new int[process_blockLeng/4];
 		pbszPlainText = new byte[process_blockLeng];
 		
-		for(j=0; j<PLAINTEXT_LENGTH-process_blockLeng; )
+		for(j=0; j<PLAINTEXT_LENGTH-process_blockLeng; j+= process_blockLeng)
 		{			
 			System.arraycopy(pbData3, j, newpbszPlainText, 0, process_blockLeng);
 			data = chartoint32_for_SEED_CBC(newpbszPlainText, process_blockLeng);
@@ -1819,7 +1819,7 @@ public class KISA_SEED_CBC {
 		pbszPlainText = new byte[nCipherTextLen];
 		
 		
-		for(j=0; j<nCipherTextLen - process_blockLeng; )
+		for(j=0; j<nCipherTextLen - process_blockLeng; j+= process_blockLeng)
 		{
 			System.arraycopy(message, j, newpbszCipherText, 0, process_blockLeng);
 			data = chartoint32_for_SEED_CBC(newpbszCipherText, process_blockLeng);