使用AES-256CBCPKCS5填充加密解密字符串的实用程序.zip

[Run](#run) | [How To Use](#howto) | [Generate AES-256 Key](#generate) | [View AES-256 Key](#view) | [Command Line Encrypt/Decrypt](#use) Overview: =================== This is a sample utility to encrypt/decrypt using AES/CBC/PKCS5Padding algorithm _Most common error_: "Invalid Key Size" error is most likely caused by not updating JCE strength policy, see above **NOTE:** This example is built using **JDK7**, ultimate strength JCE (JDK7) and [Maven 3.x](http://maven.apache.org "Maven Documentation") - [Unlimited Strength Policy JDK7](http://www.oracle.com/technetwork/java/javase/downloads/jce-7-download-432124.html "Unlimited Strength Policy for JDK7") - JDK must have the unlimited strength policy for the JDK version <a name="run"></a>To Run: ==================== mvn clean test [Run](#run) | [How To Use](#howto) | [Generate AES-256 Key](#generate) | [View AES-256 Key](#view) | [Command Line Encrypt/Decrypt](#use) <a name="howto"></a>To Use: ==================== # Key stored in JCEKS formatted Java keystore Key key = ....; // see tests pulling key from keystore // alternative is to hard-code key in string AESCipher cipher = new AESCipher(key); String encryptedMessage = cipher.getEncryptedMessage("this is message"); String decryptedMessage = cipher.getDecryptedMessage(encryptedMessage); AESCipher cipherWithIv = new AESCipher(key, "0123456789012345".getBytes()); String encryptedMessage = cipherWithIv.getEncryptedMessage("this is message"); String decryptedMessage = cipherWithIv.getDecryptedMessage(encryptedMessage); [Run](#run) | [How To Use](#howto) | [Generate AES-256 Key](#generate) | [View AES-256 Key](#view) | [Command Line Encrypt/Decrypt](#use) <a name="generate"></a>Generate an AES-256 Key ====================== keytool -genseckey -alias jceksaes -keyalg AES -keysize 256 -storetype JCEKS -keypass mykeypass -storetype jceks -keystore aes-keystore.jck -storepass mystorepass [Run](#run) | [How To Use](#howto) | [Generate AES-256 Key](#generate) | [View AES-256 Key](#view) | [Command Line Encrypt/Decrypt](#use) <a name="view"></a>View AES-256 Key from command line ====================== mvn clean package // generate executable JAR file java -Dkeystore=main-aes-keystore.jck -Dstorepass=mystorepass -Dalias=jceksaes -Dkeypass=mykeypass -jar target/example-encryption-util.jar <COMMAND like 'showKey'> // or optionally with Maven (using the above defaults) mvn exec:java [Run](#run) | [How To Use](#howto) | [Generate AES-256 Key](#generate) | [View AES-256 Key](#view) | [Command Line Encrypt/Decrypt](#use) <a name="use"></a>Encrypt/Decrypt AES-256 from command line ====================== // Generate executable JAR with: mvn package // Ideally the IV passed in (0000000000000000) would be randomly generated java -Dkeystore=main-aes-keystore.jck -Dstorepass=mystorepass -Dalias=jceksaes -Dkeypass=mykeypass -jar target/example-encryption-util.jar encrypt blahblahblah 0000000000000000 java -Dkeystore=main-aes-keystore.jck -Dstorepass=mystorepass -Dalias=jceksaes -Dkeypass=mykeypass -jar target/example-encryption-util.jar decrypt baN3CIAcVgq+AQr7lvKmLw== 0000000000000000 java -Dkeystore=main-aes-keystore.jck -Dstorepass=mystorepass -Dalias=jceksaes -Dkeypass=mykeypass -jar target/example-encryption-util.jar encrypt blahblahblah 0000000000000001 java -Dkeystore=main-aes-keystore.jck -Dstorepass=mystorepass -Dalias=jceksaes -Dkeypass=mykeypass -jar target/example-encryption-util.jar decrypt Wcaov8LNN4GJvp1bvOTJ0g== 0000000000000001 [Run](#run) | [How To Use](#howto) | [Generate AES-256 Key](#generate) | [View AES-256 Key](#view) | [Command Line Encrypt/Decrypt](#use) Copywrite &copy;2013 - Use of this code and it's concepts are considered a Proof-of-concept and should not be used directly in any environment