zhujt20 commented on code in PR #213: URL: https://github.com/apache/tsfile/pull/213#discussion_r1732487599
########## java/tsfile/src/main/java/org/apache/tsfile/encrypt/IEncryptor.java: ########## @@ -0,0 +1,152 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.apache.tsfile.encrypt; + +import org.apache.tsfile.exception.encrypt.EncryptException; +import org.apache.tsfile.exception.encrypt.EncryptKeyLengthNotMatchException; +import org.apache.tsfile.file.metadata.enums.EncryptionType; + +import javax.crypto.BadPaddingException; +import javax.crypto.Cipher; +import javax.crypto.IllegalBlockSizeException; +import javax.crypto.NoSuchPaddingException; +import javax.crypto.spec.IvParameterSpec; +import javax.crypto.spec.SecretKeySpec; + +import java.io.Serializable; +import java.security.InvalidAlgorithmParameterException; +import java.security.InvalidKeyException; +import java.security.NoSuchAlgorithmException; +import java.util.Arrays; + +/** encrypt data according to tsfileconfig. */ +public interface IEncryptor extends Serializable { + + static IEncryptor getEncryptor(String name, byte[] key) { + return getEncryptor(EncryptionType.valueOf(name), key); + } + + static IEncryptor getEncryptor(EncryptionType name, byte[] key) { + if (name == null) { + return new NoEncryptor(); + } + switch (name) { + case SM4128: + return new SM4128Encryptor(key); + case AES128: + return new AES128Encryptor(key); + default: + return new NoEncryptor(); + } + } + + byte[] encrypt(byte[] data); + + byte[] encrypt(byte[] data, int offset, int size); + + EncryptionType getEncryptionType(); + + class NoEncryptor implements IEncryptor { + + @Override + public byte[] encrypt(byte[] data) { + return data; + } + + @Override + public byte[] encrypt(byte[] data, int offset, int size) { + return Arrays.copyOfRange(data, offset, offset + size); + } + + @Override + public EncryptionType getEncryptionType() { + return EncryptionType.UNENCRYPTED; + } + } + + class SM4128Encryptor implements IEncryptor { + + private final SM4Utils sm4; + + SM4128Encryptor(byte[] key) { + if (key.length != 16) { + throw new EncryptKeyLengthNotMatchException(16, key.length); + } + this.sm4 = new SM4Utils(key, key); + } + + @Override + public byte[] encrypt(byte[] data) { + return sm4.cryptData_CTR(Arrays.copyOf(data, data.length)); + } + + @Override + public byte[] encrypt(byte[] data, int offset, int size) { + return encrypt(Arrays.copyOfRange(data, offset, offset + size)); + } + + @Override + public EncryptionType getEncryptionType() { + return EncryptionType.SM4128; + } + } + + class AES128Encryptor implements IEncryptor { + private final Cipher AES; + + AES128Encryptor(byte[] key) { + if (key.length != 16) { + throw new EncryptKeyLengthNotMatchException(16, key.length); + } + SecretKeySpec secretKeySpec = new SecretKeySpec(key, "AES"); + // Create IV parameter + IvParameterSpec ivParameterSpec = new IvParameterSpec(key); + try { + // Create Cipher instance and initialize it for encryption in CTR mode without padding + this.AES = Cipher.getInstance("AES/CTR/NoPadding"); + AES.init(Cipher.ENCRYPT_MODE, secretKeySpec, ivParameterSpec); + } catch (InvalidAlgorithmParameterException + | NoSuchPaddingException + | NoSuchAlgorithmException + | InvalidKeyException e) { + throw new EncryptException("AES128Encryptor init failed"); + } + } + + @Override + public byte[] encrypt(byte[] data) { + try { + return AES.doFinal(data); + } catch (IllegalBlockSizeException | BadPaddingException e) { + throw new EncryptException("AES128Encryptor encrypt failed"); + } + } + + @Override + public byte[] encrypt(byte[] data, int offset, int size) { + return encrypt(Arrays.copyOfRange(data, offset, offset + size)); Review Comment: sorry，SM4 is realized by myself，so there's no such interface. But AES has. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
