diff --git a/README.md b/README.md
index 8751749..30e420c 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ JAVA 1.8버전 사용자들을 위한 세션키 발급 및 개인정보 암복
 
 예시)
 ```
-<version>0.0.10</version>
+<version>0.0.11</version>
 ```
 
 pom.xml 을 사용하시면 아래와 같이 추가해주세요.
diff --git a/build.gradle b/build.gradle
index 62bd4bb..3d166ac 100644
--- a/build.gradle
+++ b/build.gradle
@@ -6,7 +6,7 @@ plugins {
 }
 
 group 'com.github.toss'
-version '0.0.10'
+version '0.0.11'
 
 sourceCompatibility = JavaVersion.VERSION_1_6
 targetCompatibility = JavaVersion.VERSION_1_6
diff --git a/src/main/java/im/toss/cert/sdk/TossCertSession.java b/src/main/java/im/toss/cert/sdk/TossCertSession.java
index 03405b3..2d01076 100644
--- a/src/main/java/im/toss/cert/sdk/TossCertSession.java
+++ b/src/main/java/im/toss/cert/sdk/TossCertSession.java
@@ -1,5 +1,9 @@
 package im.toss.cert.sdk;
 
+import javax.crypto.BadPaddingException;
+import javax.crypto.IllegalBlockSizeException;
+import javax.crypto.NoSuchPaddingException;
+import java.security.InvalidAlgorithmParameterException;
 import java.security.InvalidKeyException;
 import java.security.NoSuchAlgorithmException;
 
@@ -42,8 +46,18 @@ public String encrypt(String plainText) {
             String encrypted = aesCipher.encrypt(plainText);
             String hash = calculateHash(plainText);
             return addMeta(StringUtils.join(separator, new String[]{encrypted, hash}));
-        } catch (Exception e) {
-            throw new RuntimeException(e);
+        } catch (InvalidAlgorithmParameterException e) {
+            throw new RuntimeException(e.getCause());
+        } catch (NoSuchPaddingException e) {
+            throw new RuntimeException(e.getCause());
+        } catch (IllegalBlockSizeException e) {
+            throw new RuntimeException(e.getCause());
+        } catch (NoSuchAlgorithmException e) {
+            throw new RuntimeException(e.getCause());
+        } catch (BadPaddingException e) {
+            throw new RuntimeException(e.getCause());
+        } catch (InvalidKeyException e) {
+            throw new RuntimeException(e.getCause());
         }
     }
 
@@ -62,8 +76,18 @@ public String decrypt(String encryptedText) {
             String plainText = aesCipher.decrypt(items[2]);
             verify(plainText, items);
             return plainText;
-        } catch (Exception e) {
-            throw new RuntimeException(e);
+        } catch (InvalidAlgorithmParameterException e) {
+            throw new RuntimeException(e.getCause());
+        } catch (NoSuchPaddingException e) {
+            throw new RuntimeException(e.getCause());
+        } catch (IllegalBlockSizeException e) {
+            throw new RuntimeException(e.getCause());
+        } catch (NoSuchAlgorithmException e) {
+            throw new RuntimeException(e.getCause());
+        } catch (BadPaddingException e) {
+            throw new RuntimeException(e.getCause());
+        } catch (InvalidKeyException e) {
+            throw new RuntimeException(e.getCause());
         }
     }
 
diff --git a/src/main/java/im/toss/cert/sdk/TossCertSessionGenerator.java b/src/main/java/im/toss/cert/sdk/TossCertSessionGenerator.java
index 74ec1f9..ada5550 100644
--- a/src/main/java/im/toss/cert/sdk/TossCertSessionGenerator.java
+++ b/src/main/java/im/toss/cert/sdk/TossCertSessionGenerator.java
@@ -5,10 +5,11 @@
 import javax.crypto.NoSuchPaddingException;
 import java.security.InvalidKeyException;
 import java.security.NoSuchAlgorithmException;
+import java.security.spec.InvalidKeySpecException;
 import java.util.UUID;
 
 public class TossCertSessionGenerator {
-    private final static String version = "v1_0.0.10";
+    private final static String version = "v1_0.0.11";
     private final static String publicKey = "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";
 
     private final RSACipher rsaCipher;
@@ -20,8 +21,10 @@ public TossCertSessionGenerator() {
     public TossCertSessionGenerator(String publicKeyString) {
         try {
             this.rsaCipher = new RSACipher(publicKeyString);
-        } catch (Exception e) {
-            throw new RuntimeException(e);
+        } catch (NoSuchAlgorithmException e) {
+            throw new RuntimeException(e.getCause());
+        } catch (InvalidKeySpecException e) {
+            throw new RuntimeException(e.getCause());
         }
     }
 
@@ -53,8 +56,16 @@ private TossCertSession generate(AESAlgorithm algorithm, int keyLength, int ivLe
             }
             String encryptedSessionKey = buildEncryptSessionKeyPart(algorithm, secretKey, iv);
             return new TossCertSession(version, id, algorithm, secretKey, iv, encryptedSessionKey);
-        } catch (Exception e) {
-            throw new RuntimeException(e);
+        } catch (NoSuchPaddingException e) {
+            throw new RuntimeException(e.getCause());
+        } catch (IllegalBlockSizeException e) {
+            throw new RuntimeException(e.getCause());
+        } catch (NoSuchAlgorithmException e) {
+            throw new RuntimeException(e.getCause());
+        } catch (BadPaddingException e) {
+            throw new RuntimeException(e.getCause());
+        } catch (InvalidKeyException e) {
+            throw new RuntimeException(e.getCause());
         }
     }
 
@@ -66,8 +77,16 @@ public TossCertSession deserialize(String serializedSessionKey) {
             String iv = fields[4];
             String encryptedSessionKey = buildEncryptSessionKeyPart(algorithm, secretKey, iv);
             return new TossCertSession(fields[0], fields[1], algorithm, secretKey, iv, encryptedSessionKey);
-        } catch (Exception e) {
-            throw new RuntimeException(e);
+        } catch (NoSuchPaddingException e) {
+            throw new RuntimeException(e.getCause());
+        } catch (IllegalBlockSizeException e) {
+            throw new RuntimeException(e.getCause());
+        } catch (NoSuchAlgorithmException e) {
+            throw new RuntimeException(e.getCause());
+        } catch (BadPaddingException e) {
+            throw new RuntimeException(e.getCause());
+        } catch (InvalidKeyException e) {
+            throw new RuntimeException(e.getCause());
         }
     }