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  • JAVA加密算法系列-AesEBC

    package ***;
    
    import java.io.ByteArrayInputStream;
    import java.io.ByteArrayOutputStream;
    import java.io.FileInputStream;
    import java.io.FileNotFoundException;
    import java.io.FileOutputStream;
    import java.io.InputStream;
    import java.io.OutputStream;
    import java.io.UnsupportedEncodingException;
    import java.security.MessageDigest;
    
    import javax.crypto.Cipher;
    import javax.crypto.spec.IvParameterSpec;
    import javax.crypto.spec.SecretKeySpec;
    
    import sun.misc.BASE64Decoder;
    import sun.misc.BASE64Encoder;
    
    public class AesEBC {
    
        /*已确认
        * 加密用的Key 可以用26个字母和数字组成
        * 此处使用AES-128-CBC加密模式,key需要为16位。
        */
            private static String sKey="1234567890123456";
            private static String ivParameter="1234567890123456";
            private static AesEBC instance=null;
            //private static 
            private AesEBC(){
    
            }
            public static AesEBC getInstance(){
                if (instance==null)
                    instance= new AesEBC();
                return instance;
            }
            // 加密
            public String encrypt(String sSrc, String encodingFormat, String sKey, String ivParameter) throws Exception {
                Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
                byte[] raw = sKey.getBytes();
                SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
                cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
                byte[] encrypted = cipher.doFinal(sSrc.getBytes(encodingFormat));
                return new BASE64Encoder().encode(encrypted);//此处使用BASE64做转码。
        }
    
            // 解密
            public String decrypt(String sSrc, String encodingFormat, String sKey, String ivParameter) throws Exception {
                try {
                    byte[] raw = sKey.getBytes("ASCII");
                    SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
                    Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
                    cipher.init(Cipher.DECRYPT_MODE, skeySpec);
                    byte[] encrypted1 = new BASE64Decoder().decodeBuffer(sSrc);//先用base64解密
                    byte[] original = cipher.doFinal(encrypted1);
                    String originalString = new String(original,encodingFormat);
                    return originalString;
                } catch (Exception ex) {
                    return null;
                }
        }
    
            public static void main(String[] args) throws Exception {
                // 需要加密的字串
                String cSrc = "123456";
                System.out.println("加密前的字串是:"+cSrc);
                // 加密
                String enString = AesEBC.getInstance().encrypt(cSrc,"utf-8",sKey,ivParameter);
                System.out.println("加密后的字串是:"+ enString);
                System.out.println("yXVUkR45PFz0UfpbDB8/ew==".equals(enString));
                // 解密
                String DeString = AesEBC.getInstance().decrypt(enString,"utf-8",sKey,ivParameter);
                System.out.println("解密后的字串是:" + DeString);
            }
    
    }
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  • 原文地址:https://www.cnblogs.com/dava/p/6416640.html
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