小白我是第一次发博客，不知道格式也不知道内容规不规范。只是将我个人遇到的问题曝露出来，为以后小伙伴们遇到相同问题能第一时间找到方案。好了闲话不多说，下面主题：

up主新进一公司做小额贷款，所以对数据需要加密处理，那么久用到了AES+base64的加密，于是乎就被后台甩了一个android的加密方法给我。如下：

public static String Encrypt(String sSrc) throws Exception {

    String sKey = Constants.KEY;
    byte[] raw = sKey.getBytes("utf-8");
    SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
    Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");//"算法/模式/补码方式"
    cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
    byte[] encrypted = cipher.doFinal(sSrc.getBytes("utf-8"));
    return parseByte2HexStr(encrypted);//此处使用BASE64做转码功能。
}

那么我就只有网上找demo进行相比较测试咯、接着就出现了下面一个网上demo适合于我，主要加密方法如下： //data加密

• (NSData ) AES256_Encrypt:(NSString )key{ char keyPtr[kCCKeySizeAES256+1]; bzero(keyPtr, sizeof(keyPtr)); [key getCString:keyPtr maxLength:sizeof(keyPtr) encoding:NSUTF8StringEncoding]; NSUInteger dataLength = [self length]; size_t bufferSize = dataLength + kCCBlockSizeAES128; void *buffer = malloc(bufferSize); size_t numBytesEncrypted = 0; CCCryptorStatus cryptStatus = CCCrypt(kCCEncrypt, kCCAlgorithmAES128,kCCOptionPKCS7Padding | kCCOptionECBMode,keyPtr, kCCBlockSizeAES128,NULL,[self bytes], dataLength,buffer, bufferSize,&numBytesEncrypted); if (cryptStatus == kCCSuccess) { return [NSData dataWithBytesNoCopy:buffer length:numBytesEncrypted]; } free(buffer); return nil; }

//NSString加密

• (NSString ) AES256_Encrypt:(NSString )key{ const char cstr = [self cStringUsingEncoding:NSUTF8StringEncoding]; NSData data = [NSData dataWithBytes:cstr length:self.length];

  //对数据进行加密 NSData *result = [data AES256_Encrypt:key];

  //转换为2进制字符串 if (result && result.length > 0) {

  Byte *datas = (Byte *)[result bytes];
  NSMutableString *output = [NSMutableString stringWithCapacity:result.length * 2];
  for(int i = 0; i < result key=@ xss=removed xss=removed json=[[NSString xss=removed xss=removed xss=removed xss=removed> 0) {
  Byte *datas = (Byte *)[result bytes];
  NSMutableString *output = [NSMutableString stringWithCapacity:result.length * 2];
  for(int i = 0; i &lt; result.length; i++){
      [output appendFormat:@"X", datas[i]];
  }
  return output;

  } return nil; }

即将： const char cstr = [self cStringUsingEncoding:NSUTF8StringEncoding]; NSData data = [NSData dataWithBytes:cstr length:self.length];

改为： NSData *data = [self dataUsingEncoding:NSUTF8StringEncoding];

完毕！！！

以上是小白我第一次博客内容，经供参考，希望能为游客提供帮助！谢谢大家~~~~

   最后留下网上demo地址（具体如何修改还得看个人项目需要！）：[ Enter your link description here: ](https://github.com/AllLuckly/LBAES/tree/master)