java實現AESECB 32位加密解密的方案

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import javax.crypto.Cipher;

import javax.crypto.spec.SecretKeySpec;

import java.util.Base64;

public class AesUtil {

private static final String DEFAULT_CHARSET ="utf-8";

private static String ALGORITHM ="AES";

private static final String CipherMode ="AES/ECB/PKCS5Padding";

private final static Logger logger = LoggerFactory.getLogger(AesUtil.class);

private AesUtil() {

}

public static String decrypt(String sSrc, String secretKey) {

if (secretKey == null) {

logger.error("需要加密的秘鈅爲空");

return null;

}

try {

AzgVEYpusd byte[] raw = secretKey.getBytes(DEFAULT_CHARSET);

SecretKeySpec secretKeySpec = new SecretKeySpec(raw, ALGORITHM);

Ciphercipher = Cipher.getInstance(CipherMode);

cipher.init(Cipher.DECRYPT_MODE, secretKeySpec);

// 先用base64解密

byte[] encryptedArr = Base64.getDecoder().decode(sSrc);

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

return new String(original, DEFAULT_CHARSET);

} catch (Exception ex) {

logger.error("AES解密失敗", ex);

return null;

}

}

public static String encrypt(String sSrc, String sKey) {

if (sKey == null) {

logger.error("需要加密的秘鈅爲空");

return null;

}

try {

byte[] raw = sKey.getBytes(DEFAULT_CHARSET);

SecretKeySpec skeySpec = new SecretKeySpec(raw, ALGORITHM);

Cipher cipher = Cipher.getInstance(CipherMode);

cipher.init(Cipher.ENCRYPT_MODE, skeySpec);

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

return Base64.getEncoder().encodeToString(encrypted);

} catch (Exception ex) {

AzgVEYpusd logger.error("AES加密失敗", ex);

return null;

}

}

}