AES AES-CBC-128
AES共有ECB、CBC、CFB、OFB、CTR五种模式
AES-128-CBC可以自己定义“密钥”和“偏移量“；
1、AES-CBC-128
public class RiskUtil {
public static String certify(JSONObject json,String RISK_CONTROL_KEY,String IV,String DEFAULT_ENCODING,String AES,String PADDING) {
json.put("name", UnicodeUtils.native2ascii(json.get("name")+""));
String jsonStr = json.toString();
jsonStr = jsonStr.replace("\\\\", "\\");
String encryptData = encrypt(jsonStr, RISK_CONTROL_KEY,IV,DEFAULT_ENCODING,AES,PADDING);
System.out.println("encryptData="+encryptData);
return encryptData;
}
private static String encrypt(String code, String key,String Iv,String DEFAULT_ENCODING,String AES,String PADDING) {
code = padding(code);
try {
return new Base64()
.encodeToString(encrypt(code.getBytes(DEFAULT_ENCODING),
key.getBytes(DEFAULT_ENCODING),Iv.getBytes(DEFAULT_ENCODING),AES,PADDING));
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
private static byte[] encrypt(byte[] code, byte[] key,byte[] Iv,String AES,String PADDING) throws Exception {
SecretKeySpec keySpec = new SecretKeySpec(key, AES);
Cipher cipher = Cipher.getInstance(PADDING);// "算法/模式/补码方式"
// 使用CBC模式，需要一个向量iv，可增加加密算法的强度
IvParameterSpec iv = new IvParameterSpec(Iv);
cipher.init(Cipher.ENCRYPT_MODE, keySpec, iv);
return cipher.doFinal(code);
}
public static String decrypt(String data, String key,String IV,String DEFAULT_ENCODING,String AES,String PADDING) {
data = padding(data);
try {
return new String(decrypt(data.getBytes(DEFAULT_ENCODING), key.getBytes(DEFAULT_ENCODING),
IV.getBytes(DEFAULT_ENCODING),DEFAULT_ENCODING,AES,PADDING));
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
private static byte[] decrypt(byte[] src, byte[] key,byte[] Iv,String DEFAULT_ENCODING,String AES,String PADDING) throws Exception {
SecretKeySpec keySpec = new SecretKeySpec(key, AES);
Cipher cipher = Cipher.getInstance(PADDING);
IvParameterSpec iv = new IvParameterSpec(Iv);
cipher.init(Cipher.DECRYPT_MODE, keySpec, iv);
byte[] _src = new Base64().decode(src);
return cipher.doFinal(_src);
}
private static String padding(String code) {
for (int i = 0; i < code.length(); i++) {
code += " ";
if (code.length() % 16 == 0) {
break;
}
}
return code;
}
public static void main(String[] args) {
final String AES = "AES";
final String PADDING = "AES/CBC/NoPadding";// "算法/模式/补码方式"
final String DEFAULT_ENCODING = "utf-8";
final String IV = "1234567812345678";
// 身份认证
final String RISK_CONTROL_URL = "http://fengkong.haodai.com/api/data/index";
final String RISK_CONTROL_KEY = "UMorc6ecjMgKANVLaoO4VUP7T8DxRdgv";
final String RISK_CONTROL_ID = "00000000-0";
Request request = JsonUtil.fromJson("{'type':'202','name':'小米','idcard':'110105198307077715'}", Request.class);
JSONObject jo = JSONObject.fromObject(JsonUtil.toJson(request));
RiskUtil rt = new RiskUtil();
System.out.println("encryptData="+rt.certify(jo,RISK_CONTROL_KEY,IV,DEFAULT_ENCODING,AES,PADDING));
//JSONObject jo2 = JSONObject.fromObject(rt.certify(jo,RISK_CONTROL_KEY,IV,DEFAULT_ENCODING,AES,PADDING));
//System.out.println("加密编码后：" +decrypt(jo2.get("data")+"",RISK_CONTROL_KEY));
}
}
2、 中文编码转换
public class UnicodeUtils {
public static String native2ascii(String code) {
char[] chars = code.toCharArray();
int charValue = 0;
String result = "";
for(int i = 0; i < chars.length; i++){
charValue = (int) code.charAt(i);
if (charValue <= 256) {
// result += "& "+Integer.toHexString(charValue)+";";
result += "\\"+Integer.toHexString(charValue);
}else{
// result += "&#x"+Integer.toHexString(charValue)+";";
result += "\\u"+Integer.toHexString(charValue);
}
}
return result;
}
public static String ascii2native(String code) {
char aChar;
int len = code.length();
StringBuffer outBuffer = new StringBuffer(len);
for (int x = 0; x < len;) {
aChar = code.charAt(x++);
if (aChar == '\\') {
aChar = code.charAt(x++);
if (aChar == 'u') {
// Read the xxxx
int value = 0;
for (int i = 0; i < 4; i++) {
aChar = code.charAt(x++);
switch (aChar) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
value = (value << 4) + aChar - '0';
break;
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
value = (value << 4) + 10 + aChar - 'a';
break;
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
value = (value << 4) + 10 + aChar - 'A';
break;
default:
throw new IllegalArgumentException(
"Malformed \\uxxxx encoding.");
}
}
outBuffer.append((char) value);
} else {
if (aChar == 't')
aChar = '\t';
else if (aChar == 'r')
aChar = '\r';
else if (aChar == 'n')
aChar = '\n';
else if (aChar == 'f')
aChar = '\f';
outBuffer.append(aChar);
}
} else
outBuffer.append(aChar);
}
return outBuffer.toString();
}
public static void main(String[] args) {
String result = native2ascii("中国");
String _result = ascii2native(result);
System.out.println(result);
System.out.println(_result);
}
}