package org.apache.doris.udf.demo;import javax.crypto.*;import javax.crypto.spec.SecreTKEySpec;import org.apache.commons.lang3.StringUtils;import java.security.SecureRandom;public class AESUtil { private static final String defaultCharset = "UTF-8"; private static final String KEY_AES = "AES"; public static String encrypt(String content, String secret) { return doAES(content, secret, Cipher.ENCRYPT_MODE); } public static String decrypt(String content, String secret) { return doAES(content, secret, Cipher.DECRYPT_MODE); } private static String doAES(String content, String secret, int mode) { try { if (StringUtils.isBlank(content) || StringUtils.isBlank(secret)) { return null; } //Determine whether to encrypt or decrypt boolean encrypt = mode == Cipher.ENCRYPT_MODE; byte[] data; //1.Construct a key generator, specified as the AES alGorithm, case-insensitive KeyGenerator kgen = KeyGenerator.getInstance(KEY_AES); SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG"); //2. Initialize the key generator according to the ecnodeRules rules //Generate a 128-bit random source, based on the incoming byte array secureRandom.setSeed(secret.getBytes()); //Generate a 128-bit random source, based on the incoming byte array kgen.init(128, secureRandom); //3.generate the original symmetric key SecretKey secretKey = kgen.generateKey(); //4.Get the byte array of the original symmetric key byte[] enCodeFORMat = secretKey.getEncoded(); //5.Generate AES key from byte array SecretKeySpec keySpec = new SecretKeySpec(enCodeFormat, KEY_AES); //6.According to the specified algorithm AES self-generated cipher Cipher cipher = Cipher.getInstance(KEY_AES); //7.Initialize the cipher, the first parameter is encryption (Encrypt_mode) or decryption (Decrypt_mode) operation, // the second parameter is the KEY used cipher.init(mode, keySpec); if (encrypt) { data = content.getBytes(defaultCharset); } else { data = parseHexStr2Byte(content); } byte[] result = cipher.doFinal(data); if (encrypt) { //convert binary to hexadecimal return parseByte2HexStr(result); } else { return new String(result, defaultCharset); } } catch (Exception e) { System.out.println(e.getMessage()); } return null; } public static String parseByte2HexStr(byte buf[]) { StringBuilder sb = new StringBuilder(); for (int i = 0; i < buf.length; i++) { String hex = Integer.toHexString(buf[i] & 0xFF); if (hex.length() == 1) { hex = '0' + hex; } sb.append(hex.toUpperCase()); } return sb.toString(); } public static byte[] parseHexStr2Byte(String hexStr) { if (hexStr.length() < 1) { return null; } byte[] result = new byte[hexStr.length() / 2]; for (int i = 0; i < hexStr.length() / 2; i++) { int high = Integer.parseInt(hexStr.substring(i * 2, i * 2 + 1), 16); int low = Integer.parseInt(hexStr.substring(i * 2 + 1, i * 2 + 2), 16); result[i] = (byte) (high * 16 + low); } return result; }}
加密函数
package org.apache.doris.udf.demo;import org.apache.hadoop.hive.ql.exec.UDF;import org.apache.commons.lang3.StringUtils;public class AESEncrypt extends UDF { public String evaluate(String content, String secret) throws Exception { if (StringUtils.isBlank(content)) { throw new Exception("content not is null"); } if (StringUtils.isBlank(secret)) { throw new Exception("Secret not is null"); } return AESUtil.encrypt(content, secret); }}
解密函数
package org.apache.doris.udf.demo;import org.apache.hadoop.hive.ql.exec.UDF;import org.apache.commons.lang3.StringUtils;public class AESDecrypt extends UDF { public String evaluate(String content, String secret) throws Exception { if (StringUtils.isBlank(content)) { throw new Exception("content not is null"); } if (StringUtils.isBlank(secret)) { throw new Exception("Secret not is null"); } return AESUtil.decrypt(content, secret); }}
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