スプリング暗号無効キーサイズ

Question

エラーが発生しました説明できません。

public static String encrypt(String plain, SaltPasswordPair saltPassword) { 
    String password = saltPassword.getPassword(); 
    String salt = saltPassword.getSalt(); 

    TextEncryptor encryptor = Encryptors.text(password, salt); 
    String encrypted = encryptor.encrypt(plain); 

    return encrypted; 
} 

これは私のコードです。 パスワードの長さ（4,16、それ以外）、塩の長さ、または何か値を渡しても（私はここでも[Stackoverflow]といくつかの他のページの例から&のコピーを1：1コピーしようとしました）例外：

java.lang.IllegalArgumentException: Unable to initialize due to invalid secret key 
at org.springframework.security.crypto.encrypt.CipherUtils.initCipher(CipherUtils.java:120) 
at org.springframework.security.crypto.encrypt.AesBytesEncryptor.encrypt(AesBytesEncryptor.java:115) 
at org.springframework.security.crypto.encrypt.HexEncodingTextEncryptor.encrypt(HexEncodingTextEncryptor.java:36) 
at de.thyaris.hydrogen.core.sec.Security.encrypt(Security.java:32) 
at de.thyaris.hydrogen.core.sec.SecurityTest.testCryption(SecurityTest.java:22) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
at java.lang.reflect.Method.invoke(Unknown Source) 
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) 
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) 
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) 
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) 
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) 
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) 
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57) 
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) 
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) 
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) 
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) 
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) 
at org.junit.runners.ParentRunner.run(ParentRunner.java:363) 
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86) 
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) 
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459) 
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:678) 
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382) 
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192) 

Caused by: java.security.InvalidKeyException: Illegal key size 
at javax.crypto.Cipher.checkCryptoPerm(Cipher.java:1039) 
at javax.crypto.Cipher.implInit(Cipher.java:805) 
at javax.crypto.Cipher.chooseProvider(Cipher.java:864) 
at javax.crypto.Cipher.init(Cipher.java:1396) 
at javax.crypto.Cipher.init(Cipher.java:1327) 
at org.springframework.security.crypto.encrypt.CipherUtils.initCipher(CipherUtils.java:113) 
... 27 more 

私には何か不足していますか？ 暗号化バージョンは4.2.2.RELEASE

EDIT： JDKディレクトリに外部JARを追加しなくてもこれを修正する方法はありますか？

Answer 1

プライベート文字列cryptKey = "qkjll5 @ 2md3gs5Q @ FDFqf";デフォルトのJavaによって

は128ビットの暗号化（128ビット== 16バイト== 16文字）多分

Removing the 128-bit key restriction in Java