AES加密与解密报错:javax.crypto.BadPaddingException: Given final block not properly pad

javaee_sunny 2017-06-19 08:46:09

1.错误现象:

javax.crypto.BadPaddingException: Given final block not properly padded

	at com.sun.crypto.provider.CipherCore.doFinal(CipherCore.java:966)

	at com.sun.crypto.provider.CipherCore.doFinal(CipherCore.java:824)

	at com.sun.crypto.provider.AESCipher.engineDoFinal(AESCipher.java:436)

	at javax.crypto.Cipher.doFinal(Cipher.java:2165)

	at com.crt.serviceSupport.service.atom.AESEncryptionUtilsTest.desEncrypt(AESEncryptionUtilsTest.java:72)

	at com.crt.serviceSupport.service.atom.AESEncryptionUtilsTest.Test2(AESEncryptionUtilsTest.java:56)

	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

	at java.lang.reflect.Method.invoke(Method.java:497)

	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.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)

	at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)

	at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)

	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)

	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:252)

	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94)

	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.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)

	at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)

	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)

	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191)

	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:675)

	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)

	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

2.加密与解密源码:

	/*

	 * 解密

	 */

	public static String desEncrypt(String data) throws Exception

	{

		String key = "1938567890CRHRTF";

		byte[] encrypted1 = Base64.decode(data.getBytes(), Base64.DEFAULT);

		//byte[] encrypted1 = Base64.decode(data);

		Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");

		SecretKeySpec keyspec = new SecretKeySpec(key.getBytes(), "AES");

		cipher.init(Cipher.DECRYPT_MODE, keyspec);

		byte[] original = cipher.doFinal(encrypted1);

		return new String(original, "UTF-8");



	}



	/**

	 * 加密

	 */

	public static String encrypt(String data) throws Exception

	{

		String key = "1938567890CRHRTF";

		Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");

		//Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");

		SecretKeySpec keyspec = new SecretKeySpec(key.getBytes(), "AES");

		cipher.init(Cipher.ENCRYPT_MODE, keyspec);

		byte[] encrypted = cipher.doFinal(data.getBytes());

		return Base64.encodeToString(encrypted, Base64.DEFAULT);



	}