Flutter(Dart) Aes加密相关

xubo5200

我是做安卓开发的，最近在学习flutter,然后碰到一个AES/CFB/NOPADDING加密问题，java加密的内容，无法和flutter中互解，尝试了网上多种库和教程都没办法互解，求个大佬给我用dart语言解析下  


java代码如下

[Java] 纯文本查看 复制代码

?

01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78

package com.example.lib;   import javax.crypto.Cipher; import javax.crypto.spec.IvParameterSpec; import javax.crypto.spec.SecretKeySpec;   public class Test {         static String keyStr = "620F15CFDB5C79C34B3940537B21EDA072E22F5D7151456DEC3932D7A2B22C53";     static String ivStr = "85D7D7DA41E22C1A66C9C1BFC70A1088";       public static void main(String[] args) {           String haha = encrypt("哈哈！你好。");//密文:B7488CC936D5FF626F50900F99CEB2E13D99         decrypt(haha);       }       static String encrypt(String content) {         try {             byte[] ivByte = hex2byte(ivStr);             byte[] key = hex2byte(keyStr);               Cipher cipher = Cipher.getInstance("AES/CFB/NoPadding");             SecretKeySpec keySpec = new SecretKeySpec(key, "AES");             IvParameterSpec ivSpec = new IvParameterSpec(ivByte);             cipher.init(1, keySpec, ivSpec);             byte[] doFinal = cipher.doFinal(content.getBytes("UTF-8"));             System.out.println("doFinale:" + byte2hex(doFinal));             return byte2hex(doFinal);         } catch (Exception e) {             e.printStackTrace();             return null;         }     }       static void decrypt(String content) {           try {             byte[] ivByte = hex2byte(ivStr);             byte[] contentByte = hex2byte(content);             byte[] key = hex2byte(keyStr);             Cipher cipher = Cipher.getInstance("AES/CFB/NoPadding");             SecretKeySpec keySpec = new SecretKeySpec(key, "AES");             IvParameterSpec ivSpec = new IvParameterSpec(ivByte);             cipher.init(Cipher.DECRYPT_MODE, keySpec, ivSpec);             byte[] result = cipher.doFinal(contentByte);             System.out.println(new String(result, "UTF-8"));         } catch (Exception e) {             e.printStackTrace();         }     }       public static byte[] hex2byte(String str) {         if (str == null) {             return null;         }         int length = str.length();         if (length % 2 == 1) {             return null;         }         byte[] bArr = new byte[length / 2];         for (int i = 0; i != length / 2; i++) {             int j = i * 2;             bArr[i] = (byte) Integer.parseInt(str.substring(j, j + 2), 16);         }         return bArr;     }       public static String byte2hex(byte[] bArr) {         String str = "";         for (byte b : bArr) {             String hexString = Integer.toHexString(b & 255);             str = hexString.length() == 1 ? str + "0" + hexString : str + hexString;         }         return str.toUpperCase();     } }