Merge branch 'master' of http://139.186.142.91:10010/r/productDev/dmvisit

liukangdong

2024-08-22 0aa2dd71fa4b989838f89aff2cac82950a70097f

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package cn.emay.sdk.util;
 
import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
 
/**
 * AES加解密工具
 * 
 * @author Frank
 *
 */
public class AES {
    
    public final static String ALGORITHM_AEPP = "AES/ECB/PKCS5Padding";
 
    /**
     * AES加密
     * 
     * @param content
     *            内容
     * @param password
     *            密钥
     * @param algorithm
     *            算法
     * @return 加密后数据
     */
    public static byte[] encrypt(byte[] content, byte[] password, String algorithm) {
        if (content == null || password == null)
            return null;
        try {
            Cipher cipher = null;
            if (algorithm.endsWith("PKCS7Padding")) {
                cipher = Cipher.getInstance(algorithm, "BC");
            } else {
                cipher = Cipher.getInstance(algorithm);
            }
            cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(password, "AES"));
            return cipher.doFinal(content);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
 
    /**
     * AES解密
     * 
     * @param content
     *            加密内容
     * @param password
     *            密钥
     * @param algorithm
     *            算法
     * @return 解密后数据
     */
    public static byte[] decrypt(byte[] content, byte[] password, String algorithm) {
        if (content == null || password == null)
            return null;
        try {
            Cipher cipher = null;
            if (algorithm.endsWith("PKCS7Padding")) {
                cipher = Cipher.getInstance(algorithm, "BC");
            } else {
                cipher = Cipher.getInstance(algorithm);
            }
            cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(password, "AES"));
            byte[] bytes = cipher.doFinal(content);
            return bytes;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
 
    /**
     * AES加密
     * 
     * @param content
     *            内容
     * @param password
     *            密钥
     * @param algorithm
     *            算法
     * @param ivStr
     *            向量
     * @return 加密后数据
     */
    public static byte[] encrypt(byte[] content, byte[] password, byte[] ivStr, String algorithm) {
        if (content == null || password == null)
            return null;
        try {
            Cipher cipher = null;
            if (algorithm.endsWith("PKCS7Padding")) {
                cipher = Cipher.getInstance(algorithm, "BC");
            } else {
                cipher = Cipher.getInstance(algorithm);
            }
            IvParameterSpec iv = new IvParameterSpec(ivStr);
            cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(password, "AES"), iv);
            return cipher.doFinal(content);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
 
    /**
     * AES解密
     * 
     * @param content
     *            加密内容
     * @param password
     *            密钥
     * @param algorithm
     *            算法
     * @param ivStr
     *            向量
     * @return 解密后数据
     */
    public static byte[] decrypt(byte[] content, byte[] password, byte[] ivStr, String algorithm) {
        if (content == null || password == null)
            return null;
        try {
            Cipher cipher = null;
            if (algorithm.endsWith("PKCS7Padding")) {
                cipher = Cipher.getInstance(algorithm, "BC");
            } else {
                cipher = Cipher.getInstance(algorithm);
            }
            IvParameterSpec iv = new IvParameterSpec(ivStr);
            cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(password, "AES"), iv);
            byte[] bytes = cipher.doFinal(content);
            return bytes;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
 
}